I don’t know if you know about quenching technology. This technology can make the steel get the desired hardness and strength. ,Take a look. The quenching of steel is to heat the steel to a temperature above the critical temperature Ac3 (hypo-eutectoid steel) or Ac1 (hypereutectoid steel), keep it for a period of time to make it all or part of austenitizing, and then cool it at a temperature greater than the critical cooling rate. A heat treatment process for martensite (or bainite) transformation by rapid cooling to below Ms (or isothermal near Ms). The solution treatment of aluminum alloy, copper alloy, titanium alloy, tempered glass and other materials or the heat treatment process with rapid cooling process is also called quenching. Purpose The purpose of 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 strength, hardness and resistance of steel. Grinding, fatigue strength and toughness, etc., so as 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. Quenching technology When was quenching technology invented? Iron smelting industry in the Western Han Dynasty: The use of iron tools began in the Western Zhou Dynasty; during the Spring and Autumn Period and the Warring States Period, the technology of softening cast iron was invented, which was a major achievement in the history of iron smelting in the world, more than 2,000 years earlier than in Europe; the two Han Dynasties: The iron smelting industry in the Western Han Dynasty was divided into Official and private. Coal became the fuel for iron smelting, and people invented quenching technology; in the Eastern Han Dynasty, Du Shi invented water drainage, which made China's iron smelting level lead the world for a long time. Wanhe Gong is a famous iron smelting center; Sui and Tang Dynasties: cutting, polishing, welding and other processes were widely used; quenching technology Liao and Song Dynasties: Liao and Jin had a high level of iron smelting; in the middle and late Ming Dynasty, Guangdong Foshan iron smelting Industry, iron six or seven thousand catties a day. Knowledge: In the age of agricultural civilization, the development of iron smelting is an obvious sign of the progress of productivity, and it strongly promotes social change and progress. The above is the purpose and time of the quenching technology introduced by Kehua Induction Heating Equipment
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