Process for producing die steel by utilizing converter continuous casting mode

Abstract

The invention discloses a process for producing die steel by utilizing a converter continuous casting mode. The process comprises a steel making continuous casting process and a steel rolling process. The steel making continuous casting process comprises the following process steps of: converter smelting, LF (Ladle Furnace) refining, continuous casting, slow cooling and other process steps; and the steel rolling process comprises the following process steps of: heating, scale removal by using high pressure water, rolling, straightening, stacking, slow cooling and other steps. By using the die steel produced by the invention, the contents of gas and occluded foreign substances in the die steel can be reduced, the thermal stress and the structural stress for slowing a steel blank down are eliminated, a thick and nonuniform cast structure inside the steel blank is improved, and the problems of flaw detection disqualification and finished product crack of the die steel are solved. By using the process, the aim of producing the die steel by using a converter is achieved, the production cost is reduced, and the economic benefit is increased.

Description

technical field

[0001] The invention relates to a metal material production method in the field of metallurgy, in particular to a process for producing mold steel by using a converter-continuous casting method. Background technique

[0002] Mold is the main production and processing tool for manufacturing parts in industrial sectors such as machinery manufacturing, radio instruments, motors, and electrical appliances. The quality of the mold directly affects the quality of the pressure processing process, the precision of the product, the output and the production cost. The quality and service life of the mold are not only guaranteed by reasonable structural design and machining accuracy, but also the material and heat treatment of the mold steel used in the production of the mold are also important factors affecting the quality of the mold. Die steel mainly refers to the steel used to make molds such as cold stamping dies, hot forging dies and die-casting dies.

[0003] A...