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Why do hardware shrapnel need heat treatment
Netizens asked: Why heat treatment of metal shrapnel? What should be done? Expert answer: Heat treatment can improve the hardness, wear resistance and contact fatigue strength of the surface of the workpiece, and improve the strength and toughness of the core. The heat treatment of metal shrapnel can be divided into surface quenching and tempering heat treatment and chemical heat treatment. The surface quenching and tempering heat treatment is usually carried out by induction heating or flame heating. The chemical heat treatment is to make the surface of the workpiece infiltrate the atoms of one or several chemical elements, thereby changing the chemical composition, organization and performance of the surface of the workpiece. The main technical parameters are surface hardness, local hardness and effective hardened layer depth.
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