A kind of production method of high-carbon high-chromium stainless steel coil

Abstract

The invention provides a production method of a high-carbon high-chromium stainless steel coil. On the basis of total weight of the high-carbon high-chromium stainless steel coil, the carbon content is at 0.90-1.0%, and the chromium content is at 17.0-19.0%. The production method includes sequentially heating, rolling, coiling, cooling and annealing high-carbon high-chromium stainless steel coil blanks, and rolling includes rough rolling, intermediate rolling, pre-finish rolling and finish rolling. The production method is characterized in that inlet rolled piece temperature of pre-finish rolling is at 1000+ / -10 DEG C, and inlet rolled piece temperature of the finish rolling is at 1100+ / -10 DEG C. By the production method, the high-carbon high-chromium stainless steel coil can be obtained with rolling yield higher than 90%.

Description

Technical field

[0001] The invention relates to a method for producing high-carbon and high-chromium stainless steel coils. Background technique

[0002] At present, common high-carbon high-chromium stainless steels, such as 95Cr18 series stainless steels, whose metallographic structure is characterized by martensite, are generally used to produce stainless steel or weak acid media and oxidizing acids, organic acids and salts. Corroded balls, bearings, high-quality knives and scissors, surgical knives and high wear-resistant equipment parts, etc. This kind of stainless steel has high hardness, high wear resistance and corrosion resistance, but its own plasticity is poor, and it has certain difficulty in production and processing. In the prior art, in the process of rolling high-carbon and high-chromium stainless steel, the rolling is very difficult, and the phenomenon of head cracking often occurs in the early stage of hot rolling, and the head splitting is easy to occur during ...