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Buyer's Guide to Loopers in Steel Rolling Mills

 

The steel production procedure is a part of a complicated, intricate and highly-specialised industry that demands a plethora of premium quality equipment to manufacture the best steel products.  One key piece of equipment that must be present in the production process to ensure seamless operation is loopers. Let’s take a closer look at loopers and how they impact the steel rolling industry. 

What are Loopers?

Loopers have a simple purpose in the manufacturing process. This equipment manages the material in steel rolling mills by regulating the movement and processing of hot steel bars. These loopers comprise a set sequence of rollers that assist in moving hot steel bars across the steel rolling mill. The purpose of these loopers is to provide a steady and stable condition for the processing of steel bars. This decreases the risk of product defects and improves the quality of the final steel product.

What is the Role Of  Loopers in Steel Rolling Mills?

Loopers are vital in the steel rolling process as they temporarily provide efficient and suitable housing for hot steel bars. During this period, the hot steel bars cool and straighten before starting the rolling process to receive their ultimate shape. Loopers are also responsible for controlling and regulating the tension variation in the steel bars. Doing so reduces the risk of defects and imperfections and enhances the overall quality of the steel bars. 

The looper also enhances the general efficiency and security of the steel rolling mill. Due to the looper, the chances of injury are reduced as it decreases the requirement for manual intervention or handling.

They are also responsible for enhancing the efficiency of the steel rolling mills. It is because hot steel bars travel swiftly during the process, decreasing the time consumed during processing and improving quality. 

What Are The Different Types Of Loopers?

When it comes to loopers, there are two primary types that are operated in steel rolling mills:

  • Vertical loopers
  • Horizontal loopers

Vertical Loopers 

As the name suggests, vertical loopers move hot steel bars around the steel rolling mill vertically, generally in an upwards position. The vertical looper is employed to raise the hot steel bars to an elevated position from a lower one. These bars can then cool and straighten to receive their final shaping. 

These types of loopers are perfect for steel mills where hot steel bars need vertical motion, like mills with rolling stands in operation. 

Horizontal Loopers

For horizontal loopers, they transport the hot steel bar from one side to the other of the steel mill horizontally. The horizontal looper is employed, especially when hot steel bars must move through numerous processing stations to get to their temporary storage location.

This kind of looper and its horizontal movement is beneficial when steel bars need to go through continuous rolling mills. 

How To Choose The Right Looper? 

The looper type relies on the specific needs of the steel rolling process and the mill’s overall layout. Both vertical and horizontal loopers play an essential role in managing the movement and processing of hot steel bars in a steel rolling mill, and both have their unique advantages.

Why Trust The Steefo Group For The Best Loopers?

If you are searching for the best loopers for your steel rolling mill, look no further than The Steefo Group. We can supply you with everything your rolling mill will require, including loopers.  We have been the most favoured integrated rolling mill manufacturer for nearly four decades.  The Government of India also acknowledges us as the Star Export House, and we adhere to our reputation. With over 100+ establishments, we are a notable name worldwide and in the country. 

Understanding The Steefo Group’s Loopers

When you select loopers from The Steefo group, you are ensured quality. You also get your hands on the most innovative and futuristic products that will allow you to enhance the face of your business.  The Steefo Group specialises in everything,  from turnkey projects to single modular projects, depending on the needs of your business. From TMT bar rolling and wire rod mills to products such as loopers, rolling mill gearboxes and more. 

Our loopers follow rigorous testing procedures and quality checks to supply the best-in-class products. Our focus on technology and innovation also provides you with the most up-to-date loopers for your rolling mill. 

To learn more about the Steefo Group and their products and how they can improve your productivity and profits, contact +91 98240 76873 or drop a mail at marketing@thesteefogroup.com.  

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What Are DC Motors?: A Beginner’s Guide

 

We have heard the term “DC  motors” pop up across several industries but have you ever wondered what it means? DC motors are an important component utilized across numerous industries, from rolling mills to elevators. Today let us take a look at DC motors, what it is, their applications, their overall importance and more.

What is a DC Motor?

DC motors or Direct Current Motors are machines that specialize in transforming electrical energy from a battery into mechanical energy. When the electrical energy or current passes through the power source and directly into the motor, the energy is transformed and recast into mechanical rotation. Mechanical rotation happens because this process allows wheels, blades and propellers to spin along with other elements.

How Does A  DC Motor Operate?

DC motors operate by employing their power source to create electrical energy or current inside the motor’s brush. This process, along with stator magnets, produces magnetic fields. The magnetic field created by the electrically charged brushes is used to generate movement in the rotor. The electrical input and the type of motor also determine the speed of the motor and the amount of torque.

What Are The Parts of a DC Motor?

DC motors or Direct Current Motors have numerous parts, although they might vary based on the type of DC motor. However, the parts mentioned are found in your average DC motor.

  • Axel: Responsible for holding the commutator and the armature.
  • Armature: A collection of electromagnets responsible for electrical current and its movement.
  • Commutator: Permits the discharge of electricity to the armature
  • Stator Magnets: Responsible for creating a rotating magnetic field for the armature.
  • Brushes: Operates along with the commutator to provide proper rotation.

What Are The Different Types Of DC Motors?

Direct Current motors, or DC motors, can be classified into four different categories. These categorizations allow you to comprehend how these DC motors operate and their various uses. 

1. Permanent Magnet DC Motor

In Permanent Magnet DC Motors, permanent magnets are employed to create the field flux. Field winding on the stator frame is not present in this type of DC motor. It instead operates on permanent magnets to create a magnetic field allowing the rotor field to interact and generates torque. These DC motors are known for their high initial starting torque and can regulate speed thoroughly.  

2. Series DC Motors

In Series DC motors, the full armature current courses via the field winding. Series DC motors also comprise significantly larger conductors in their windings. This allows the motor to have a minimal resistance, which permits them to obtain and accept a larger amount of power supply. The primary drawback of these DC motors is that heavy loads can majorly impact speed.

3. Shunt DC Motors 

Shunt DC motors are where armature and shunt field windings are parallel to each other but not to the series field winding. Since the shunt field can be operated without the armature windings, it allows for easier control on reversing. Shunt DC motors have incredible speed control and regulation despite the load on the motor. This ability makes shunt DC motors ideal for operations that require accurate speed control. 

4. Compound DC Motors

Compound DC motors contain both series winding and shunt field winding. These DC motors usually provide great starting torque but may have control issues during variable-speed drive usage. The motors in the compound DC motors have the ability to be connected in two methods: differentially and cumulatively.

The cumulative connection type joins the series field to assist the shunt field, equipping it with a higher starting torque but lower speed control. On the other hand, the differential connection type has great speed control and usually functions at a steady speed. 

What Are The Applications Of Different DC Motors?

Permanent Magnet DC Motor is employed in several household appliances and day-to-day appliances such as blowers, air conditioners, toys, electric toothbrushes, power tools, heaters, food mixers, and ever objects like windshield wipers and more.

Series DC motors are typically used where high starting torque and speed variations are necessary. This type of DC motor is used in sewing machines, portable electrical appliances, vacuum cleaners, winches, air compressors and more. They can also be seen in traction systems, engine starters, and cranes and are utilized to cowl and control airplane wings.

Shunt DC motors are utilized for items requiring constant speed. The shunt dc motors applications are in centrifugal pumps, weaving machines fans, blowers, conveyor belts, lifts, mixers, spinning machines, etc.

Compound wound motors are operated where you require higher starting torque and constant speed. These DC motors applications include printing presses, shears, cutting machines, conveyors, elevators, steel rolling mills, heavy planners, industrial mixers, etc.

Where To Find The Highest-Quality DC Motors?

Are you looking for best-in-class DC motors? Look no further than The Steefo Group. You get assurance on quality when you select DC motors from The Steefo group. You also get your hands on the most ingenious and futuristic products that will help you convert the face of your business.

Our projects and products, such as DC motors, also undergo strict testing and quality inspections to deliver the best-in-class products. Our focus on technology and innovation also provides you with the most up-to-date products for your rolling mill.

To learn more about the Steefo Group and their products and how they can boost your productivity and profits, contact +91 98240 76873 or drop a mail at marketing@thesteefogroup.com.

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A Comprehensive Guide to Hot Rolling Mill Process

 

The main objective of the entire steel rolling process is to create complete or semi-complete parts by deforming the massive plates and ingots to decrease the cross section in them. In metalworking processes, hot rolling mill is considered to be a commonly-used technique. In this technique, metal is heated beyond the recrystallization temperature, and the plasticity is distorted during the rolling procedure. This process ensures that the volume and features of the metal are maintained while creating various shapes and dimensions.

After being heated, the metal goes through rolling devices to retain its volume and uniformity while flattening and reducing the overall cross-sectional area.  The construction sector often employs the hot rolling process and the product it creates. The hot-rolled steel from this process is great as raw material and the final product.

How Does The Hot Rolling Process Work For Steel And Stainless Profiles?

Steel billets and blooms are heated at an extreme temperature to initiate the hot rolling procedure. The temperature surpasses a minimum of 1100 degrees and is changed depending on the requirements of the process. The metal is passed via the rolling mechanism to ensure there is damage on the edges and structure of the metal grain. This process ensures that new and sturdy designs and boundaries are produced with uniform grain structures and volume,

At a high temperature, the slabs or blooms pass through the casting process and are then fed into the rolling mills. The metal’s strength, toughness, ductility, formability, resistance to vibration and shock, and weldability are all increased by rolling operations.

During the treatment process, extreme force and pressure are used for metal cleaning and eliminating the mill scales.  Doing so ensures that no surface defects on the final finished items. When the metal cools down, the cooling rate of the steel is to be checked to correct the crystallization and, in general, microstructure depending on the various uses.                                                                       

Why Is Hot Rolling Preferred?

Hot rolling is the preferred method amongst steel rolling mills due to the certain characteristic that it instills in the steel. Steel that goes through the hot-rolling process tends to be

  • Stronger 
  • Tougher
  • More Ductile 
  • Resistant to Shock and extreme vibrations
  • Weldable 
  • Formable 

What Are The Advantages Of Hot Rolling 

When the hot-rolling process is selected for steel rolling , numerous advantages are attached to it that benefits the end product being created. Here are some of the various advantages:

Enhanced Mechanical Properties 

When steel goes through a hot rolling mill, several characteristics and properties of the steel are altered due to heat and pressure. Certain mechanical properties encounter the most change but improve the quality of steel. For example, properties such as elasticity, elongation percentage, shock resistance and overall toughness improve drastically. 

Altered Grain Structure

In the hot rolling mill, the metal’s grain structure changes. The grain structure that plays a vital role gets refined. The usual coarse grain gets transformed into finer grains which alters the properties of the metal. 

Change In Porosity

The hot rolling mill and its process ensure that the porosity of the metal is removed and eliminated. This alternation due to hot rolling creates a stronger, tougher, uniform metal in the structure.

Distribution Of Impurities

Metals and steels have numerous impurities that can affect the final result and how the product is formed. In hot rolling mills, impurities,  such as slag, are distributed throughout in an even manner. If they remained concentrated, those areas would have become weaker and would be prone to breakage. 

Requirement Of Low Pressure:

In hot rolling mills, the metal deformation process is easier due to the extremely high temperature of rolling. This temperature reduces the requirement for high pressure, making the process easier. 

Why Rely On The Steefo Group For The Hot Rolling Mills?

So you are looking for suitable hot rolling mills and their equipment. Look no further, as The Steefo Group delivers you with anything your steel rolling mill will ever need. We have been the ultimate and most favoured integrated hot rolling mill manufacturer for almost four decades. The Government of India also recognizes us as the Star Export House, and we adhere to our reputation. With over 100+ locations, we are a renowned name worldwide and in the country. 

Understanding The Steefo Group’s Hot Rolling Mills 

When you choose The Steefo group, you are getting assured quality. You also obtain the most innovative and futuristic products in hot rolling that will enable you to convert and reinvent the face of your business.  The Steefo Group specializes in everything,  from turnkey projects to single modular projects, depending on the needs of your business. From TMT bar rolling and wire rod mills to products such as mill stand, rolling mill gearboxes, and reheating furnaces. 

We undergo stringent testing and quality checks to provide you with the best. Our priority is technology and innovation, providing you with the most updated products for your rolling mill. 

To learn more about the Steefo Group and their products and how they can improve your productivity and profits, contact +91 98240 76873 or drop a mail at marketing@thesteefogroup.com. 

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Roller Conveyor: An Essential In Rolling Mill Operation

 

Roller conveyors or roller tables are essential to rolling mill plants and their regular operation. Rolling mills use roller conveyors to carefully move material from point A to point B without human intervention. The entire function of roller tables is to ensure efficient and speedy movements of various materials, which is why they are commonly used in rolling mills.

For a roller conveyor to operate smoothly, there needs to be at least one rigid or almost flat object to touch the rollers and retain steady equilibrium. Some of the most primary materials that roller tables carry are steel billets, slabs, bars, ingots, plates and more.

Several types of roller conveyors and roller tables are available in the market, but all of them fall under either one of these classifications.

  • Unpowered or idle roller conveyor
  • Powered or live roller conveyor

Unpowered Roller Conveyors

Unpowered roller conveyors are rollers that are operated without the assistance of an external power source. The roller table works by rolling over multiple rollers with the help of manual push or a form of push from a chain constantly in motion. These idle or unpowered roller conveyors usually function on a horizontal and flat surface or at a gentle incline to assist the roller tables in functioning correctly. An incline rate of 1.5 to 3 percent allows gravity to do much of the work.

Powered roller conveyors

Powered roller conveyors or live roller tables operate when designated, or the entire group of rollers operate with the help of one or more motors depending on the stage of production. The powered rollers are set into motion and move s the load with friction. Powered rollers conveyors also benefit from its inclined installation. The average incline on these roller tables is usually 10 degrees upwards or approximately 17 degrees downwards.

Why Are Roller Conveyor systems Essential To The Rolling Mill Industry?

Roller conveyors are essential in the rolling mill industry due to their utility in every aspect of production.

1. Decreases Manual Wastage 

Roller conveyor systems are essential to the entire production unit and eradicate a lot of manual labour. Automating these tasks expedites the whole production process and decreases the probability of human error, wastage and potential injury.

2. Enhances Flexibility

Since roller tables and roller conveyors are necessary for every step of production, modular roller tables enhance the rate of flexibility. This ensures that these roller conveyors are used in numerous rolling mill applications.

3. Improved Quality And Standard

Roller Conveyors facilitate automation and speedy production and enhance the product’s quality at every step of the process. Due to the roller table system, it is easier to spot any form of deformity or error in the product, allowing companies to rectify it immediately.

4. Enhanced Efficiency 

Roller tables and conveyors can operate 24 hours a day, and are efficient to run compared to other types of machinery. They also increase efficiency and productivity rates, especially during busier times of the year. The parts of these machines are also easy to find and replace in case of damage, making them reliable during the production process.

Why Rely On The Steefo Group For The Best Roller Conveyor?

Are you searching for proper rolling mill roller tables and conveyors? Look no further, as The Steefo Group can supply you with everything your rolling mill plant will ever need.  We have been the leading and most popular integrated rolling mill manufacturer for almost four decades.  The Government of India also acknowledges us as the Star Export House, and we adhere to our reputation. With over 100+ establishments, we are a prominent name worldwide and in the country.

When you choose a roller table or conveyor from The Steefo group, you are getting assured quality. You also get your hands on the most inventive and futuristic products that will help you change and accelerate the face of your business.  The Steefo Group has expertise in everything,  from turnkey projects to single modular projects, depending on the requirements of your business. From TMT bar rolling mills and wire rod mills to products such as mill stand, rolling mill gearboxes, reheating furnaces and more.

Our projects and products also experience rigorous testing and quality checks to supply the best-in-class products. Our emphasis on technology and innovation also provides you with the most up-to-date products for your rolling mill.

To learn more about the Steefo Group and their products and how they can improve your productivity and profits, contact +91 98240 76873 or drop a mail at marketing@thesteefogroup.com.

 

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Key Factors to Consider While Choosing a Rolling Mill Manufacturer

 

When picking a rolling mill machinery manufacturer, you want to select the best out of all of them. The proper rolling mill machinery manufacturer ensures that your needs are met without errors and still upholds your standard. Here are some factors you need to consider when picking your manufacturer. 

1. Condition of Production Facility 

The condition of the production facility says a lot about the quality of products. You want your rolling mill machinery to be the best in class to create high-quality products. Top-quality rolling mill machinery manufacturers like The Steefo Group pay attention to every detail, from the raw material to the equipment used during the process. When you select good quality manufacturers, you are guaranteed to get premium results up to par with your standards. 

2. Variety Of Products Offered 

An average steel rolling mill manufacturer offers various products for varied industries. Top rolling mill machinery provider, The Steefo Group, has a huge range of products, including reheating furnaces, mill stands, shears, gearboxes, loppers, quenching systems and more. This gives you a better overview of the technology they employ regarding their products. A suitable steel rolling mill manufacturing plant caters to all these requirements by offering superior quality products for different industries.

3. Attention To Quality Control 

When searching for the perfect manufacturer, you must understand their commitment and overall quality control process. Manufacturers like The Steefo Group are consistent in quality and therefore have a 100 percent customer and client satisfaction rate. Your manufacturer should guarantee quality and meet your desired standards through stringent norms. Most high-quality rolling mill machinery manufacturers have a dedicated quality assurance team that examines the products and machines being created. They also should ideally perform quality change throughout all the stages. 

4. Valid Certification 

All rolling mill machinery manufacturers must maintain a certain standard of quality. The bar complies commonly with ISO and viz. One of the most premium rolling mill machinery manufacturers, The Steefo Group, complies with ISO 9001:2015 certification. Therefore, ensure that the manufacturer you will select and work with has the proper and valid certificate to guarantee that your standards are not compromised. 

5. Innovation, Research and Development:

Any manufacturer should always focus on moving ahead, investing in research and innovation and focusing on development. Its dedicated research and development team indicates a great manufacturing company. This indicates that the company is constantly working to fix any errors and improve the current process and create a more streamlined version. Manufacturers such as The Steefo Group utilizes software such as CAD and Kisssoft to enhance ongoing development that meets the industry standards to become not the only provider of both rolling machinery and solutions. Before selecting, find out if there is an R&D team and if so, get in contact with them to see if their vision of the future aligns with the vision you have for your company.

6. Distribution And Delivery 

When you work with a manufacturer, timing is crucial to the entire operation. The delivery of the products and machinery will determine the time required to finish the task efficiently while maintaining customer satisfaction. Distribution and delivery are also important to get ahead of the competition. Check if the rolling mill machinery manufacturer has a well-connected and reliable distribution and delivery model, as it will ensure a seamless and stress-free delivery process. 

Why Should You Pick The Steefo Group To Be Your Rolling Mill Machinery Manufacturer?

When you select The Steefo group, you are getting guaranteed quality. You get access to the most innovative and futuristic products that will allow you to transform your business. The Steefo Group specializes in everything,  from turnkey projects to products, depending on the demands of your business. From TMT bar rolling mills and wire rod mills to products such as mill stand, rolling mill gearboxes, reheating furnaces and more. 

Our projects and products also undergo thorough testing and strict quality checks to supply you with the best machinery and products. Our focus on technology and innovation also provides you with the most up-to-date products for your rolling mill. 

To learn more about the Steefo Group and their products and how they can improve your productivity and profits, contact +91 98240 76873 or drop a mail at marketing@thesteefogroup.com. 

Also Read: 5 Benefits of Rolling Mills for Small Manufacturers

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Everything You Need To Know About Rolling Mill Gearbox Care

 

What is a Rolling Mill Gearbox?

Gearboxes are an essential part of the entire rolling mill system. They are multiple open gear sets retained in a housing. The gearbox housing contains numerous bearings, shafts, and lubricants that safeguard all the other elements from its conditions. When it comes to industrial-grade rolling mill gearbox, they are operated with the help of a drive unit. The gearboxes increase and decrease the drive unit’s speed or torque depending on your requirement.  A rolling mill gearbox is created keeping in mind several load capacities and speed ratios, as its primary purpose is the control speed.

1. Maintenance Tips For Your Rolling Mill Gearbox

Rolling mill gearboxes are a crucial part of your entire rolling mill operation, which is why it is essential that you keep up to date on its maintenance. Rolling mill gearboxes have maintenance requirements to guarantee the machine’s longevity. Here are some maintenance tips from the top manufacturers of rolling mill gearboxes and similar machines.

2. Inspect Your Rolling Mill Gearbox On A Regular Basis

A routine inspection of your rolling mill is essential as it helps to figure out and pinpoint even the most minor issues before it becomes a significant problem. The assessment allows you to fix the problem on time, in turn saving valuable time and enhancing efficiency. Here are some of the issues you should keep an eye out on:

  • Oil Leaks, especially on the input and output shafts
  • Check for discolouration of the paint (could be a sign of overheating)
  • Listen to the sound and vibration noises of the gearbox, as they can be a great indicator

3. Check The Temperature Rolling Mill Gearbox

Another place where you need to keep your rolling mill gearboxes in check is its temperature. If gearboxes are not cared for they can often face overheation or in general change in temperature. The temperature has a huge impact on the performance of the rolling mill gearbox, which is why you need to be consistent and maintain the ideal temperature level. To understand if the temperature of your rolling mill gearbox is rising more that ot should you can monitor it easily with the assistance of an infrared gun. Any random changes in temperature will be a cause for concern.

4. Regular Lubrication Of Your Rolling Mill Gearbox

Any machine works smoother when it is lubricated on a regular basis, the same is the case with rolling mill gearboxes. A basic part of the entire maintenance procedure is the lubrication of the rolling mill gearbox. Ask your rolling mill gearbox providers regarding which lubricants and additive to use on the gearbox. It is essential that you hydrate your rolling mill gearbox with proper lubrication to ensure consistent and efficient operations.

5. Check For Any Alignment issues In The Rolling Mill Gearbox

If your rolling mill gearbox is not properly aligned it can cause loud sounds and increased vibrations. You should check if your rolling mill gearbox is aligned correctly, as it not only decreased sounds but also improves performance. Ensure that the correct coupling is utilised during the process to ensure that there is interference created amongst the mating and fit parts.

6. Rid Your Roling Gearbox From Dirt And Dust

Gearboxes are used in several different industries and can often be in the midst of immense dirt and dust when operating. One of the basic tenants of maintenance is to keep the machine clean; therefore, you must ensure that dust and dirt do not accumulate in the machine by cleaning it on a regular basis. It is best if you create a proper schedule to guarantee that your rolling mill gearbox is getting cleaned.

7. Keep An Eye On Rolling Mill Gearbox’s Vibrations

Changes in vibration noises can be an indicator of an internal problem in the rolling mill gearbox. When the gearbox is in operation, do a vibration check and analyse the differences. If the vibration remains consistent, you do not need to worry, but a sudden increase or decrea in the vibrationis cause for concern. Contact the maintenance team of your rolling mill gearbox provider to check the interiors for any damage.

Why Choose Rolling Mill Gearboxes From The Best Rolling Mill Manufacturers

When you choose rolling mill gearboxes from The Steefo group, you are obtaining assured quality products. You also get your hands on the most innovative and advanced rolling mill gearbox that will help you improve your business.

Our rolling mill gearboxes experience strict testing and rigorous quality checks to provide the best-in-class products. Our focus on technology and innovation also provides you with the most up-to-date rolling mill gearboxes for your rolling mill.

To learn more about the Steefo Group and their products and how they can improve your productivity and profits, contact +91 98240 76873 or drop a mail at marketing@thesteefogroup.com.

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Everything You Need To Know About Shears

What Are Shears? 

Shears are a crucial part of every steel rolling mill. A shearing machine is used to slice plates, bars, thin metal sheets and beams. These machines cut steel and several other mayoral of various dimensions. We at The Steefo Group are one of India’s biggest manufacturers of industrial-grade shears. Our design focuses on precision and superior quality, which is operated with the assistance of the most advanced technology in the market. With our wide range of shears as well as customisation options, you will be able to see a major improvement in your business. 

Type Of Shears 

Flying Shears 

A Flying Shear is a standard industrial instrument known for cutting a constant product at a determined length at line speed. Flying shears do not interrupt the primary production, ensuring maximized productivity. The flying dividing shear created is intended to cut the TMT bar according to the length of the cooling bed. These flying dividing shears have a finishing speed of 20mps.

End Cutting Crop and Cobble Shear

End Cutting Crop and Cobble Shear are utilized to trim the front and tail end. They also come into action for segment-cutting hot rolling eventualities. These shears are managed by a PLC system and provide tight tolerance for cropped or shortened length. End cutting crop and cobble shears are also started/stop type shears operated with the help of a direct dc motor or a mounted Flywheel Pneumatic Clutch/Brake.

Cold Shears

Cold shears are crucial to the rolling mill process due to their placement. These shears are placed right at the end of the cooling bed of the rolling mill. Their incredible high strength capacity performs well when it comes to cutting metal in a wide variety of shapes and sizes. They are also highly customisable and can be designed for your specific requirement. The three most common type of cold shear that are produced are:

  • Pneumatic Clutch Brake Type Cold Shear
  • Hydraulic Cold Shear
  • Electro-Mechanical Cold Shear

Rotary Shear

Rotary shears are a preferred choice by numerous rolling mill manufacturers due to their cost effectiveness and performance. These shears are employed to cut the front and end portions, and discard pre-quenched bars during any contingency. These shears rotate continuously and are usually placed on shortening hot-rolled bars at a low speed.

Hot Saw and Cold Saw

Cropping structural sections are a necessary part of the rolling mill procedure—hot saws cut front and end sections in the required length. 

There are two types of hot saws available – 

  • Horizontal shift type
  • Static type

Cold saw, also provides precise and accurate cutting, where both open and closed types are available. They are utilised with a start and stop the drive, managing structural units and high alloy steels.

Hydraulic Shear 

A hydraulic shear  machine is a type of machine that operates with the assistance of a suitable and reasonable blade gap to utilse cutting force to rolling mill metal plates of various dimensions and thicknesses, employing an upper blade that is in motion and a lower blade fixed onto the surface so that the plates can be split, trimmed and separated according to the necessary size

Why Choose Shears From The Best Rolling Mill Manufacturers

When you pick products such as shears from The Steefo group, you obtain a guaranteed quality product. You also get your hands on the most innovative and futuristic products that will enable you to convert your business’s face.  

Our projects and products also undergo relentless and stringent testing and numerous quality checks to deliver the best-in-class products. Our emphasis on technology and innovation also provides you with the most up-to-date products for your rolling mill. 

To learn more about the Steefo Group and their products and how they can improve your productivity and profits, contact +91 98240 76873 or drop a mail at marketing@thesteefogroup.com.  

 

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Reheating Furnaces In Steel Rolling Mills

 

Reheating Furnaces serve the purpose of heating steel blooms, billets or slabs in steel rolling mills. Reheating furnaces takes this steel stock up to approximately 1200 degree Celsius. The steel begins to deform at this temperature, and the steel rolling process can begin. In a reheating furnace, the heat provided to the steel stock is constant. The stock is charged at the entrance, heated up to the assigned temperature in the furnace and discharged at the reheating furnace exit. During the process, the heat gets transferred to the stock in the furnace with the help of radiation and convection. This takes place due to the placement of the burner gasses and furnace walls. 

How Does The Heat Transfer Mechanism Operate In A Reheat Furnace? 

A steel stock charging temperature can vary drastically, ranging from ambient to the high temperature of 1200-degree celsius. Depending on the dimensions of the steel stock, speed of rolling, and overall steel composition, the exit temperature of a steel stock might differ. The factor of steel quality also plays a huge role when it comes to temperature as it puts limitations on the surface and gradient temperature. It is to be noted that both gaseous and liquid fuels are used in these reheating furnaces.

What Are The Main Characteristics Of A Reheating Furnace?

A Reheating furnace’ size depends on its ability to produce hot steel from the cold steel stock and is calculated in tons per hour. The increased heat content determines a reheating furnace and its energy efficiency. When the steel stock is heated from 10 degrees celsius to approximately 1200-degree celsius and is then divided by fuel energy used, efficiency can then be calculated accurately. The energy efficiency of a furnace also relies upon the design aspects of various reheating furnaces. 

Design Features That Plays A Role In The Energy Efficiency Of A Reheating Furnace

  • Different styles of burners
  • Dimensions of a Reheating Furnace. 
  • The total number of furnace zones 
  • Different kinds of roof and wall insulation
  • Design of skid 
  • Combustion air and preheating fuel in recuperators

An energy-efficient reheating furnace is developed in a particular method to allow the steel stock to heat up at a uniform temperature without consuming too much labour and fuel. 

Here are Some of The Important Parameters That A reheating furnace must include:

  • The amount of heat that must be imparted to the charge
  • Creation of necessary heat inside the reheating furnace required to heat the stock and curb steel losses
  • The transfer of heat created onto the surface of the stock that needs to be heated
  • Temperature equalisation within the stock 
  • A decrease in heat losses from the reheating furnace to a minimum 

Several operational approaches also play a crucial role in the energy efficiency of a reheating furnace. The ideal case of a reheating furnace is when the furnace is operated at the rated capacity with one kind of steel stock, which has the same dimension and composition. But often, this practice is not followed, which hampers the efficiency of the reheating furnace. 

Factors that Affect Efficiency of A Reheating Furnace

  • Differences in the dimension and composition of steel stock 
  • Delays in rolling can delay or halt the movement of steel stock in the furnace 
  • The composition of the fuel and its availability may differ
  • The conditions of the burners and the internal  state of the reheating furnace might deteriorate 

How are Reheating Furnaces Classified?

Several types of reheating furnaces are available in an average steel rolling mill, but how are they classified into different categories? Reheating furnaces are usually placed in four categories based on:

  • Heating Method 
  • Charging the reheating furnace method 
  • Steel stock movement inside the reheating furnace
  • Recovery of the heat method

If the reheating furnace is classified based on the heating method, there will be two types of heating.

  • Electrical Heating 
  • Combustion Heating 

Combustion heating reheating furnaces are able to use solid, gaseous and liquid fuels.

When the classification is based upon the steel stock’s movement in the furnace, a continuous furnace can be categorized further.

  • Pusher Furnace 
  • Walking Beam Furnace 
  • Roller Hearth Furnace 
  • Walking Hearth Furnace 
  • Rotary Hearth Furnace 

When the classification depends on heat recovery, there are only two types of reheating furnaces.

  • Regenerative Type 
  • Recuperative Type

The regenerative type of reheating furnace operates on regenerative burners. On the other hand, the recuperative variety of reheating furnaces functions with recuperators. 

Why Choose Reheating Furnaces From The Best Rolling Mill Manufacturers

When you select reheating furnaces from The Steefo group, you are guaranteed superior quality. Get your hands on the most innovative and futuristic products that will help you change the face of your business.  

Our projects and products also experience strict testing and quality checks to deliver best-in-class products. Our emphasis on technology and innovation also delivers up-to-date products for your rolling mill. 

To learn more about the Steefo Group and our reheating furnace and how they can improve your productivity and profits, contact +91 98240 76873 or drop a mail at marketing@thesteefogroup.com. 

 

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Why Should You Pick Turnkey Projects From The Steefo Group?

 

Purchasing a turnkey rolling mill project is always beneficial and effective.  Are you wondering why turnkey solutions are so important? With turnkey solutions, the client saves substantial time and monetary resources, which would otherwise have been used on erecting rolling mills. If you are considering buying steel rolling mills or related products, it is worth looking for the turnkey solutions that the Steefo Group offers.

The Steefo Group is infamous for establishing its presence in the steel rolling industry as one of the most reliable partners in the world of steel rolling and forming. Our projects are executed in unimaginable time frames, including turnkey solutions. Our quality is undisputed, with cutting-edge technology and machinery, professional engineers, and the best manufacturing facilities in India.

Steefo delivers unparalleled technological responsibility helping clients during the entire project term. We create numerous turnkey solutions, which include providing the steel plant equipment and conducting the project. It also includes the erection and commissioning projects to acquire necessary and optimum production capacity.

Greenfield / Brownfield integrated

The Steefo Group provides completely integrated steel rolling plant machinery and equipment. It contains Turnkey solutions and supplies, auxiliary plants, and procedure control automation. There is also a full-service range involving exceptional methodology and emphasis on optimum responsibility for the advancement of our clients.

TMT Bar Rolling Mill

For The Steefo Group, TMT bar rolling mills have become part of our DNA. We have always been the one-stop shop in the steel melting and rolling industry for all your needs. Our advanced and modern design can handle turnkey solutions right from the inception or concept to the completion or commissioning of the project. These projects can be customised according to the client’s requirements, ranging from a production capacity of 10 TPH TO 100 TPH.

The Steefo Group has always uncovered ingenious, integrated automation solutions devised to increase productivity and reduce the workforce, guaranteeing a quicker return on investment.

Structural Rolling Mill

The rolling and roll formation occurs through a rolling mill to curve or distort the workpiece to the preferred shape while retaining a consistent cross-section.

The Steefo Group is amongst the expert front runners who have completed and supplied end-to-end turnkey solutions and services for structural rolling mills. Our structural rolling mill unfailingly provides improved performance and minimal downtimes.

Wire Rod Mill

The Steefo Group has been a reliable name in innovative design, expert engineering, consultancy, and development of Wire rod mills. We have developed, planned, supplied, and commissioned several wire rod mills varying from medium to large capacities for approximately four decades.

The increasing demands on the production quality of the wire rods and the flexibility and cost-effectiveness of the wire rod mills have facilitated the evolution of contemporary and creative technologies and processes. Our modern wire rod mills are high-speed mills capable of rolling smaller sizes. They also have increased production rates while maintaining investments and operating costs at reasonable levels.

Customised Solutions

The evolution and execution of turnkey plants are conducted precisely in line with your necessities at your desired quality.

Our latest creative processes satisfy the necessities of today’s demanding steel industry in terms of increased product quality and output capability, more profitable material yield, and plant efficiency, resulting in significant savings.

Why Choose The Steefo Group?

You get guaranteed quality when you choose turnkey solutions from The Steefo group. You also get your hands on the most innovative and futuristic products that will help you transform the face of your business. The Steefo Group specializes in everything,  from turnkey projects to single modular projects, depending on the needs of your business. From TMT bar rolling and wire rod mills to products such as mill stands, rolling mill gearboxes, and reheating furnaces.

Our projects and products also undergo rigorous testing and quality checks to supply the best-in-class products. Our focus on technology and innovation also provides you with the most up-to-date products for your rolling mill.

To learn more about the Steefo Group and their products and how they can improve your productivity and profits, contact +91 98240 76873 or drop a mail at marketing@thesteefogroup.com.

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Why Are TMT Steel Bars Highly Flexible Compared To Other Steel Bars?

 

Regarding steel bars, flexibility is one of the most critical components that steel rolling mills focus on. With high levels of flexibility, the steel bars can bend effortlessly without breaking. This allows the construction to withstand extra load impact during events such as natural calamities without compromising the structure.

Amongst all the steel bars that are currently in production, TMT bars are one of the flexible steel bars with the best tensile strength. The added benefit of TMT bars being fire and corrosion-resistant makes these bars a preferred choice over any other steel bar. These types of TMT bars are prevalent in countries that experience frequent calamities such as earthquakes, heavy floods and. Some of these countries include Japan, China, Indonesia and more. 

What Is The Significance Of TMT Bars 

Thermo Mechanically Treated(TMT) Bars are commonly known as Reinforcing bars or Rebar. These high-strength reinforcement bars have a tough exterior and soft interior core. Since the creation of TMT bars, they have become highly favoured in construction projects. It has been proven that they are a highly viable option for strengthening concrete structures. It is primarily because of their ability to withstand compressive forces. 

The creation of TMT bars is a process where steel bars go through constant heating and cooling to achieve high yield strength. TMT bars have become a staple in all construction projects. Mostly due to their robust build, appearance and strength with which they provide reinforcements to every concrete structure. 

TMT bars also positively impacted the construction industry due to their resistance to seismic forces. During calamities like earthquakes, due to their inherent flexibility, they minimise the damage done by seismic activities and prevent property damage and loss of life. TMT bars have also achieved thermal resistance, making them the safest choice. The other properties of TMT steel bars, such as high yield strength, tensile strength, and ductility, are just some of the reasons why they stand apart from regular steel bars. 

When the question arises of why TMT bars are significant, it is simply because they transformed the construction industry with their properties. They also facilitated the creation of much more complex yet safer construction projects. 

How are TMT Bars Flexible?

TMT bars have to go through thermal processing in a steel plant. These steps include rolling through heat treatment and water quenching in the steel rolling mills.

When the quenching takes place, the hot rolled bar is cooled in a quenching box within a controlled environment. The water only cools the bar’s surface to ensure that the hot rolled bars’ core retains heat. Then the process of self-tempering begins by adding heat to the surface. The outer layer then hardens and transforms into martensite, resistant to stress and pressure, while the inner core remains soft and austenitic. This process improves tensile strength and ductility and allows elongation to withstand high stress in structures such as flyovers, dams and more.

When the bar passes the final stage, it goes through cooling beds, where the inner layer of the bar converts into a ferrite-pearlite-crystal structure. This microstructure arrangement in the TMT bar ensures that all the properties are incorporated. 

Assessing The Flexibility of TMT Bars

Commonly known as the Bending and re-bending Test, this test determines the flexibility of steel bars. In this test, TMT bars are bent to 135 degrees and immersed in boiling water for approximately 30 minutes. After the time elapsed, the bar re-bent to around 158 degrees. The test ensures that the TMT bars can bend to such degrees without any surface cracks along the bends. 

Find the best TMT Bar Rolling Mill

We at the Steefo group understand the importance of TMT bars and their role in the steel and construction industry; therefore, we are the number one producer of TMT bar rolling mills. These TMT bar rolling mills are a part of Steefo’s DNA. We are the creators of ultra-modern, integrated automation solutions developed to increase productivity and decrease workforce requirements, guaranteeing a faster return on investment. 

For queries related to TMT bar rolling mills, you can reach out to us by calling us at +919824076873 or drop us a mail at marketing@thesteefogroup.com.

You can also check with our consultants to understand TMT rolling mill project costs! We would be happy to help!