The first batch of 180-ton cold-rolled weathering steel SPA-C-HD of Shagang Cold-Rolling Plant was successfully trial-produced. After inspection, the product surface quality, size, mechanical properties and roughness were well controlled, and all indicators met the requirements of relevant standards.
SPA-C-HD cold-rolled weathering steel has the characteristics of good strength and toughness, weather resistance and corrosion resistance. It is mainly used in steel structures used in the fields of photovoltaics, high-speed engineering, and power for long periods of exposure to the atmosphere. It is understood that the first batch of product orders totaled 150 tons. The end customer was a foreign power-related enterprise for manufacturing heat sinks. Since these products are mainly used in high-temperature environments and exposed to air, and have a long service life, High performance requirements in all aspects.
In the face of new products that have never been contacted before, the Cold Rolling Plant Technology Section organized the cold rolling production, quality, equipment, electrical and other departments to discuss them for the first time. After repeated research, it was found that the production of this type of steel needs to overcome the acid rolling inlet welding Poor performance, high rolling force of the rolling mill and large fluctuations in the roughness of the finished product.
In order to overcome these production technical difficulties, with the technical support of the Institute of Steel Research and the General Industry Office, the Cold Rolling Mill Technology Section has collected a large number of relevant product data and borrowed common technical points for reference. It has carried out countless tests and explored step by step. Solve production technical problems. Hard work pays off. After unremitting efforts, the technical personnel have overcome the technical difficulties that have hindered the production of new products, and formulated effective production plans. In the end, measures such as alternate welding of weathering steel and ordinary steel, establishment of a second-level rolling model of acid rolling, and fine management of the process parameters of continuous slab rolling, ensured the smooth production of cold-rolled weathering steel products.