Special steel for knife tool

Abstract

A cutter dedicated steels, is characterized in that: the chemical compositions and mass percent of each composition are: C 0.85%- 0.95%, Si 0.4%-0.5%, Mn 0.4%-0.5%, P <= 0.03%, S <= 0.02%, Cr 14.5%-15.5%, Mo 0.4%-0.6%, V 0.2%-0.3%, the residuel of Fe and inevitable micro impurity. The combination of the content of C and Cr in the inventive steels is the best combination suitable for producing cutter, the structure of steels is finer by adding Mo and V. The inventive steels have excellent integrated mechanical property, higher strength and rigidity, good toughness and excellent anti-rust property. The inventive steels have higher rigidity and better anti-rust property than the existing 3Cr13 steel, 4Cr13, 5Cr15MoVsteel, in particular the rididity HRC reach 57-58 HRC, and it is a cutter dedicated steels with excellent integrated mechanical property.

Description

technical field [0001] The invention relates to a special steel material for making kitchen knives, daily cutting knives, military knives, national craft knives and other steel knives, in particular to a chemical composition of the special steel for knives. Background technique [0002] Steel knives such as kitchen knives, daily cutting knives, military knives, travel knives, and ethnic craft knives are used to cut or chop certain items. The knives can cut or chop certain items because the knife has a sharp edge. , the knife uses the blade to realize its cutting or chopping function, so the steel for the knife should have excellent comprehensive mechanical properties, and the steel for the knife should have higher strength, higher hardness, better toughness, and excellent Excellent anti-rust performance, making the blade sharp, durable, non-collapsing and stainless. The factors affecting the performance of steel knives include the chemical composition of steel and the manuf...

AI Technical Summary

Problems solved by technology

Chromium-containing stainless and acid-resistant steel is a better type of knife steel. The chemical components that have a greater impact on the comprehensive mechanical properties of knife steel are carbon content and chromium content. Generally speaking, when the carbon content of steel is high, the strength of steel Higher, higher hardness, but poor toughness, poor anti-rust performance; when the steel contains high chromium content, the steel has good anti-rust performance and good toughness, but low strength and low hardness

In the prior art, there is no better special steel for knives, and the production of knives is made of steels with existing general standard sizing grades, such as 60 steel, 65 steel, 65Mn steel, 3Cr13 steel, 4Cr13, 5Cr15MoV steel, etc. These steels are made The overall mechanical properties of the knives are not very good. Some steels have high hardness, and the knives made of them are sharp, but the toughness is low, easy to chip, and the anti-rust performance is poor. Some steels have good anti-rust performance and high toughness, but the hardness of the steel is low.