Continuous rolling method and continuous rolling mill
The process flow of a continuous rolling mill is a complex and efficient system that covers multiple key steps to ensure the quality and performance of the final product. The following is a general process flow of a continuous rolling mill:
Raw material preparation:
The raw materials to be rolled (such as billets) are initially processed, including removing surface defects and cutting into appropriate lengths.
Heating:
The treated raw materials are sent to the heating furnace for preheating to a certain temperature to improve their plasticity and reduce deformation resistance for subsequent rolling. The preheated materials are further sent to the reheating furnace and heated to the high temperature required for rolling (usually about 1200°C) to prevent cracking or breaking during the rolling process.
Rolling:
The heated raw materials enter the rolling mill for rolling. The rolling mill consists of multiple rollers that apply pressure to cause the raw materials to undergo plastic deformation, thereby changing their shape and size. During the rolling process, parameters such as the gap, rotation speed, and rolling force of the rollers are adjusted as needed to achieve the desired rolling effect.
Cooling:
The rolled product needs to be cooled to room temperature quickly to prevent overheating, deformation or cracking. The cooling method can be air cooling, water spray or other cooling media.
Finishing:
The cooled product will undergo a series of finishing treatments to improve its surface quality and dimensional accuracy. These treatments may include straightening, cutting and grinding.
Inspection:
Before the product leaves the factory, it needs to be strictly inspected to ensure that it meets the relevant quality standards and customer requirements. The inspection content may include
appearance inspection, dimensional measurement and mechanical property testing.
Packaging and delivery:
The qualified products will be properly packaged and prepared for delivery to customers. The packaging method will be selected according to the size, shape and transportation requirements of the product.
It should be noted that different types of continuous rolling mills (such as hot rolling mills, cold rolling mills, etc.) may have certain differences in the process flow, but generally follow the above basic steps and principles. In addition, with the continuous advancement of technology and the upgrading of equipment, the process flow of continuous rolling mills is also constantly optimized and improved.