The hardness of cut wire shot is determined by carbon content

To ensure the quality of cut wire shot, the carbon content of cut wire shot determines the hardness and quality of cut wire shot.

　　After quenching and heating, there are two kinds of cooling methods for steel. One is isothermal cooling,isothermal quenching, and the other is continuous cooling,ordinary quenching. Pearlite, sorbite, toxite and bainite can be obtained by isothermal cooling as required, while martensite can be obtained by ordinary quenching. All kinds of Carbon Steel Cut Wire Shot, mechanical parts and moulds are used after quenching and tempering. The strengthening and hardening occur during quenching is due to the formation of martensite.

　　There are two basic forms of martensite. Although the carbon content determines the form of martensite, we can adjust the process to maximize the performance of the workpiece. The hardenability of cut wire shot is poor. Therefore, almost all lath martensite can be obtained by intensive quenching, and a good combination of higher strength and toughness can be obtained. Medium carbon steel or medium carbon alloy steel are widely used steels. Their carbon content ranges from 0.2% to 1.0%. The mixed structure of lath martensite and lamellar martensite is formed by quenching. When these steels are heated and quenched at high temperature, more lath martensite can be obtained, and the toughness of the steel can be greatly improved with the same hardness. For high carbon steel, in order to obtain more lath martensite, the method of heating and quenching at lower temperature and in short time can be adopted.