High Precision HI Reversing Cold Rolling Mill Supplier & Factory in China for Carbon and Stainless Steel

The Theory of Four Roll Rolling Mill

⚙️ Four roll rolling mill system is composed of two support rolls and two working rolls, working in coordinated action to reduce material thickness and extend its length.

During mill operation, through pressing cylinder or mechanical pressing device, the pressing force will transmit to support roll bearing stand, support roll, working roll, and finally act on the rolled piece. The workpiece height will be reduced (become thinner), length extended (become longer), then to meet the expected specifications.

Due to the impact of pressing force, rollers will become bending, the workpiece edges will become thinner. Rollers need grinding its convexity according to practical situation.

Product Introduction

The four-high reversing cold rolling mill is an important metal pressure processing equipment, widely used in metallurgy, mechanical manufacturing, non-ferrous metal processing and other industries. It performs cold rolling on metal materials through the coordinated action of four rolls, achieving material thinning, surface quality improvement and mechanical property enhancement.

From a technical perspective, the four-high reversing cold rolling mill consists of work rolls and backup rolls. The work rolls directly contact the rolled piece to perform rolling deformation, while the backup rolls support the work rolls to reduce their deflection and ensure the stability and accuracy of the rolling process. The reversible design enables the rolling mill to roll in both forward and reverse directions without frequent adjustments to the position of the rolled piece or the rolling mill, significantly improving production efficiency.

In terms of application scenarios, the four-high reversible cold rolling mill is mainly used for rolling various metal strips and plates, such as stainless steel, carbon steel, alloy steel, copper, and aluminum. It can meet the strict requirements of different industries for material thickness, width, surface quality, and mechanical properties. For example, in the automotive manufacturing industry, the plates rolled are used for body panels and require high strength, good formability, and corrosion resistance; in the electronic and electrical industry, the strips rolled are used to manufacture various precision components and require high surface finish and dimensional accuracy.

In terms of industry standards, the design, manufacture, and acceptance of four-high reversing cold rolling mills follow strict standards and regulations. These standards cover multiple aspects such as the structure, performance, safety, and environmental protection of the rolling mill, ensuring its stable and reliable operation and the safety of operators. Parameters such as the rolling force, rolling speed, and roll diameter are clearly specified to ensure stability and consistency of rolling quality.

In addition, the operation and maintenance of the four-high reversible cold rolling mill are also very important. Operators need to undergo professional training, be familiar with the structure, performance, and operating procedures of the rolling mill, and be able to correctly adjust the parameters and handle various problems that occur during the rolling process. Regular maintenance and servicing are also key to ensuring long-term stable operation, including roll replacement, lubrication system inspection, and electrical system maintenance.

Technical Parameter Table

📌 Remark: The model and parameters shown in this table are for reference only. The design and production can be tailor-made according to user's requirements.