1. Technical characteristics of cold-rolled stainless steel industry

(1) High-end production equipment. Stainless steel is a kind of high alloy steel with high rolling deformation resistance and high degree of work hardening, which is 2-3 times that of ordinary carbon steel. Therefore, in order to ensure the high precision and high efficiency of rolling, a rolling mill with high rigidity is required. In addition, the equipment of the entire cold rolling production line is complex, and the high-precision equipment in the unit accounts for a large proportion, involving various aspects such as electromechanical and instrument automation.

(2) The production process is complicated. The production process of cold-rolled stainless steel strip includes raw material quality inspection and welding lead of the preparation unit, multi-pass rolling of the cold-rolling unit, pickling annealing or bright annealing, strip cleaning, leveling or straightening, frosting, anti-fingerprint treatment , Rolling, slitting or cross-cutting, packaging, warehousing and other processes, any problems in any process will seriously affect the quality of the final product.

(3) Strict quality requirements. The continuous expansion of stainless steel application fields and the industrial upgrading of downstream application industries have put forward higher and higher requirements on the quality of stainless steel, not only requiring further reduction of thickness specifications, but also requiring more optimization of dimensional accuracy, flatness and surface quality. Therefore, the requirements for total quality control of the cold rolling production process are becoming more and more stringent.

(4) High management level requirements. The production of cold-rolled stainless steel plate and strip is a multi-unit joint operation. The production process is complex, and the process balance and management are very important. A good production organization and management ability is the fundamental guarantee for improving the production level and product quality.

2. Technical level of cold-rolled stainless steel industry

Although my country's cold-rolled stainless steel industry has a short development time, it has developed rapidly in the past ten years. With the rising market demand for high-end cold-rolled products, many traditional and backward four-high, six-high, eight-high and other rolling mill equipment and processes have been gradually eliminated. Among the newly added cold rolling capacity of stainless steel production enterprises in my country in recent years, the introduction and production of many high-end unit equipment such as 20-high single rolling mill or continuous rolling mill has improved the technology and equipment level of my country's cold-rolled stainless steel industry as a whole. .

In recent years, with the continuous adjustment of the global stainless steel industry structure, the new capacity of the global cold-rolled stainless steel plate and strip is mainly concentrated in China. Overall, my country's technology and equipment in the cold-rolled stainless steel industry have been at the world's advanced level.