A high-alloy stainless steel continuous casting pouring process method

Abstract

A high-alloy stainless steel continuous casting process method, the chemical composition of high-alloy stainless steel is: C≤0.020; Si≤1.00; Mn≤2.00; P≤0.045; S≤0.035; Cr is 19.00-23.00; 5.00; N≤0.100; Ni is 23.00~28.00; Cu is 1.00~2.00; the balance is iron and unavoidable impurities; including (1) blocking dummy ingot operation; (2) molten steel emergence control; (3) mold cooling ; (4) Control of molten steel superheat. The invention solves the problem of steel breakout due to cracking of the connection part and cracking of the weak shell when the high-alloy stainless steel is poured, reduces the occurrence of production accidents, improves production efficiency, and greatly reduces production costs.

Description

technical field [0001] The invention relates to a continuous casting and pouring method for high-alloy stainless steel, which belongs to the field of iron and steel metallurgy and material manufacturing. Background technique [0002] With the rapid development of modern equipment manufacturing industry and science and technology, strict requirements are imposed on the high temperature resistance, corrosion resistance and strength of materials. High alloy content stainless steel has excellent performance in high temperature strength, high temperature oxidation resistance, high temperature creep resistance and corrosion resistance. [0003] Due to the high alloy content in the production process of this type of steel (the alloy content is between 31.5%-62.3%, among them, Cr is between 19.5%-22.3%, Ni is between 12%-40%, and there are Mo, Cu, Al, Ti and other elements, and the rest are Fe elements), poor fluidity of molten steel, low thermal conductivity during solidification,...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the flow channel of high-alloy stainless steel molten steel in the dummy material in the crystallizer is not smooth, the surface of the billet shell is thin and layered after solidification, and the interior of the billet shell is loose, not dense, and incomplete, resulting in the connection strength between the billet shell and the dummy head Insufficient, under the action of frictional resistance and thermal stress in the crystallizer, the problem of cracking and leaking steel can reduce production accidents, improve production efficiency, product quality and reduce production costs. The invention provides a high-alloy stainless steel continuous casting casting process

Images