Martensite stainless steel for manufacture of scalpel blade and manufacturing method of martensite stainless steel

Abstract

The invention relates to martensite stainless steel for manufacture of a scalpel blade and a manufacturing method of the martensite stainless steel. The martensite stainless steel is prepared from, byweight, 0.65-0.70% of C, smaller than or equal to 0.5% of Si, 0.4-0.7% of Mn, smaller than or equal to 0.03% of P, smaller than or equal to 0.025% of S, smaller than or equal to 0.5% of Ni, 13.0-13.5% of Cr, 0.8-1.2% of Mo, 0.08-0.12% of V and the balance Fe and other inevitable impurities. The hardness reaches HV700 or above after quenching and tempering are completed, meanwhile, the carbon content of the martensite stainless steel is controlled within a reasonable range in order to avoid adverse influences caused by increase of the carbon content in the prior art, and the anti-corrosion effect is good.

Description

technical field

[0001] The invention relates to the technical field of metal materials and processing, in particular to a method for manufacturing martensitic stainless steel for scalpel blades. Background technique

[0002] Martensitic stainless steel belongs to chromium series stainless steel, its room temperature structure is ferrite plus carbide, after quenching and tempering, it is martensite plus retained austenite and carbide at room temperature. The main development purpose of martensitic stainless steel is to be used in the manufacture of kitchen knives, garden tools, aquatic knives, etc. Martensitic stainless steel mainly increases the quenching hardness, wear resistance, and strength by increasing the carbon content and producing uniform larger-grained carbides through heat treatment. The existing technology does not effectively control the surface quality and harmful components of the steel strip in the process of manufacturing martensitic stainless steel. [0...