A process for producing thin-gauge high-carbon steel

Abstract

The invention provides a technological method for producing thin-gauge high-carbon steel. The method comprises the steps that molten iron is subjected to desulfurization and converter smelting and argon blowing; the molten iron subjected to argon blowing is refined, and molten steel subjected to alloying treatment is obtained; the molten steel is smelted, a continuous casting billet is obtained, and the thickness of the continuous casting billet is 70-90 mm; the converter inlet temperature of the continuous casting billet is controlled to be 851-955 DEG C, and the converter outlet temperature of the continuous casting billet is controlled to be 1105-1183 DEG C; the continuous casting billet is subjected to finish rolling for seven passes, and the reduction rates of the first pass and the second pass are controlled to be 51-63%; the finish rolling temperature is controlled to be 882-918 DEG C; a hot rolled plate is obtained after finish rolling; the hot rolled plate is subjected to pickling and primary warm rolling, in the three-pass rolling process of the primary warm rolling, the rolling temperature is controlled to be 552-703 DEG C, and the reduction rate of cold rolling of each pass is controlled to be 40-50%; the hot rolled plate subjected to primary warm rolling is subjected to secondary warm rolling, in the three-pass rolling process of the secondary warm rolling, the rolling temperature is controlled to be 82-151 DEG C, and the reduction rate of cold rolling of each pass is controlled to be 3-8%; and the hot rolled plate subjected to second warm rolling is subjected to annealing, and a finished steel plate is obtained.

Description

technical field [0001] The invention relates to the technical field of steelmaking, in particular to a process for producing thin-gauge high-carbon steel. Background technique [0002] High carbon steel has the characteristics of high strength, high hardness and high wear resistance. It is mainly used to make various cutting knives and special tools. It is widely used in papermaking, forestry, rubber, plastics, textiles, electrical appliances, light industrial machinery and other fields. . [0003] At present, the production process of most high-carbon steel sheets is: molten iron → converter → LF refining → continuous casting → cooling → heating → rolling → laminar cooling → coiling → hot-rolled material → pickling → intermediate annealing → cold rolling → Intermediate annealing→cold rolling→spheroidizing annealing→cold rolled finished product. In the manufacturing method of high carbon steel mentioned above, after hot rolling, multiple annealing and multiple cold rolling...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems existing in the prior art, the embodiment of the present invention provides a process method for producing thin-gauge high-carbon steel, which is used to solve the cumbersome smelting process in the prior art when producing high-carbon steel, resulting in increased production costs. question

Images