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How to quench the hardest? What conditions should be met?

by:Kehua     2022-07-30
Quenching hardness Quenching hardness refers to the hardness index of the workpiece after the quenching process. At the quenching site, the problem that the workpiece is not hard after quenching is often heard. The purpose of quenching is to improve the hardness of the workpiece. If it is not hard, it is not called quenching. It looks like it is quenched from the outside, but it is not actually quenched inside. There are three reasons for quenching but not hardening: quenching temperature (austenitization temperature); cooling rate; mixing. How to quench the hardest change process and conditions Quenching is to transform the supercooled austenite into martensite or bainite to obtain a martensite or bainite structure, and then tempering at different temperatures to greatly improve the steel's quality. Rigidity, hardness, wear resistance, fatigue strength and toughness, etc., to meet the different requirements of various mechanical parts and tools. It can also meet the special physical and chemical properties of some special steels such as ferromagnetism and corrosion resistance through quenching. Through the combination of quenching and tempering at different temperatures, the strength, toughness reduction and fatigue strength of the metal can be greatly improved, and the coordination between these properties (comprehensive mechanical properties) can be obtained to meet different application requirements. In addition, quenching can also make some special properties of steel obtain certain physical and chemical properties, such as quenching to enhance the ferromagnetism of permanent magnet steel, and stainless steel to improve its corrosion resistance. The quenching process is mainly used for steel parts. When the commonly used steel is heated above the critical temperature, all or most of the original structure at room temperature will be transformed into austenite. The austenite is then transformed into martensite by immersing the steel in water or oil for rapid cooling. Compared with other structures in steel, martensite has the highest hardness. The rapid cooling during quenching will generate internal stress inside the workpiece, and when it is too large, the workpiece will be twisted and deformed or even cracked. A suitable cooling method must be selected for this purpose. How to quench the hardest? A metal heat treatment process in which a metal workpiece is heated to an appropriate temperature and kept for a period of time, and then immersed in a quenching medium for rapid cooling. Commonly used quenching media are brine, water, mineral oil, air, etc. Quenching can improve the hardness and wear resistance of metal workpieces, so it is widely used in various tools, molds, measuring tools and parts that require wear-resistant surfaces (such as gears, rolls, carburized parts, etc.). Through the combination of quenching and tempering at different temperatures, the strength, toughness and fatigue strength of the metal can be greatly improved, and the coordination between these properties (comprehensive mechanical properties) can be obtained to meet different application requirements. How to quench the hardest In general, if you want to quench the hardest, you must have a good equipment. Here I recommend Kehua Technology Co., Ltd. Kehua is a manufacturer of high-frequency quenching equipment. If you want to know more, please pay attention us!
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