Rolling Mill | High-Precision Steel Rolling Equipment Supplier-gyssljx

Equipment introduction

What is a Rolling Mill?

A rolling mill is a machine used in metalworking to reduce the thickness or change the shape of metal. It works by passing a piece of metal stock through one or more pairs of heavy rollers. The rollers apply significant compressive pressure, causing the metal to be reshaped.

Preparation

The metal, often a large cast piece like a slab or billet, is prepared for rolling. In hot rolling, the metal is heated to a very high temperature (above its recrystallization point) to make it more malleable and easier to shape. In cold rolling, the metal is processed at or near room temperature.

Compression

The prepared metal is fed into the rolling mill. The gap between the rollers is set to be smaller than the thickness of the metal. As the metal passes through, the rollers exert high pressure, which compresses and reshapes it. The material's thickness is reduced, and its length increases.

Multiple Passes

To achieve the desired final shape and thickness, the metal often goes through several passes. A single rolling mill may have multiple stands of rollers, or the metal may be passed back and forth through a single set of rollers.

Finishing

After the final pass, the metal is cooled and may undergo further processes like coiling, cutting, or surface treatments to meet the final product specifications.

Type Display

Types of Rolling Mills

Explore the diverse range of rolling mills, each tailored for specific materials and industrial requirements. Choose the right type to enhance your production capabilities.

Hot Rolling Mills

Operate at high temperatures (above recrystallization point) for deforming large metal billets into sheets, plates, or structural shapes, ideal for initial reduction stages.

Cold Rolling Mills

Process metal at room temperature to achieve superior surface finishes and tight dimensional tolerances, commonly used for automotive parts and appliances.

Continuous Rolling Mills

Feature multiple stands in sequence for high-speed production of long products like wires and rods, ensuring uniform quality across large volumes.

Reversing Rolling Mills

Allow metal to pass back and forth through the same rolls, providing precise thickness control for smaller batches and specialized alloys.

Planetary Rolling Mills

Utilize small work rolls around a central backup roll to produce ultra-thin strips, perfect for electronics and precision engineering.

Universal Rolling Mills

Incorporate both vertical and horizontal rolls to shape complex cross-sections, such as I-beams and rails, for construction applications.

Skin-Pass Rolling Mills

Apply light reduction after cold rolling to enhance surface texture and mechanical properties, improving formability in end products.

Tandem Rolling Mills

Combine several stands for continuous processing, optimizing efficiency in high-output facilities like steel plants.

Our technology

Technology & Process of Rolling Mills

Delve into the advanced engineering and step-by-step processes that make rolling mills efficient, reliable, and adaptable to modern industrial demands.

Core Technology of Rolling Mill

The core technology of a rolling mill is the application of controlled compressive force via rotating rolls to plastically deform metal. However, this fundamental process is augmented and perfected by a suite of modern technologies, including advanced automation, specialized roll configurations, material science innovations, and digital integration, to meet the demands for high-quality, high-precision, and efficient production.

Automation and Control Systems

The modern rolling mill is a highly automated system. Computer Numerical Control (CNC) systems, along with advanced sensors and feedback loops, monitor and adjust parameters like roll pressure, speed, and temperature in real-time. This ensures consistent product quality, tight dimensional tolerances, and minimal waste.

Advanced Metallurgy and Materials

The rolls themselves are a major area of technological advancement. Modern rolls are made from specialized materials with improved properties like higher hardness and wear resistance. Surface coatings, such as chrome plating, are also used to extend roll life and enhance product quality.

Thermo-Mechanical Control Process (TMCP)

This technology, particularly in hot rolling, involves precisely controlling the rolling temperature and cooling rate. TMCP allows for the production of steel with specific microstructures and superior mechanical properties, such as high strength and ductility. A key application is the production of TMT (Thermo-Mechanically Treated) bars, which are essential for earthquake-resistant construction.

Rolling Processes

Hot Rolling

Performed at temperatures above the metal's recrystallization point (over 1700°F for steel), this process makes the metal highly malleable. It is used for initial breakdown of large metal slabs and is a cost-effective way to produce products with a coarse surface finish and looser dimensional tolerances, such as railroad tracks and I-beams.

Rolling Processes

Cold Rolling

Done at or near room temperature, this process is for refining the product further. Cold rolling increases the metal's strength and hardness while providing a much smoother surface finish and tighter dimensional tolerances. It's used for applications where precision and aesthetics are critical, like automotive body panels and appliance casings.

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Our Advantages

Why Choose
Shenlong Machinery
for Your Rolling Mill Needs

Partner with Shenlong Machinery for unparalleled expertise, quality, and support in rolling mill solutions. Discover the benefits that set us apart in the industry.

Design and Planning

With 30 years of rich experience in steel rolling metallurgical technology, we can customize the overall solution and planning of steel rolling mill according to customer needs and the design principle of more economical and energy-saving.

Manufacturing and Fabrication

We strictly follow China's national industry standards and quality control system to complete the precision machining of the core components of the rolling mill and the assembly of the entire system, creating rolling mill equipment with stable performance and efficient operation.

Commissioning and Training

We can dispatch a professional technical team to the site to provide installation guidance and optimize the operating parameters through systematic commissioning to ensure that the rolling mill quickly reaches the designed capacity and product accuracy requirements, while also training the customer's own technical team.

Production and Profit

We can recommend professional production teams to help customers quickly achieve stable production, accelerate the return of customer investment funds and enable customers to achieve profits as soon as possible.

Spare parts and Production Line Upgrades

We provide long-term and stable spare parts and technical support. At the same time, according to customers' needs for capacity expansion and product upgrades, we provide rolling mill transformation, increase of multiple types of rolling mill equipment, and production line upgrade solutions to extend equipment life and expand production capacity.

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0086 18595836738

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Gongyi City, Zhengzhou City, Henan Province

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With 30 years of professional experience, we customize efficient and energy-saving rolling mill production lines, providing you with one-stop service from design to installation and commissioning, helping you achieve steady growth in the steel industry.

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