There are many professional terms for the processing of five materials such as steel. The following editor will introduce to you what quenching is and what is the role of quenching. What is the purpose of the quenching treatment of steel, the following editor will introduce it in detail. The role of quenching What is quenching? Quenching is a metal heat treatment process in which the 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 surface wear resistance (such as gears, rolls, carburized parts, etc.). Through the combination of quenching and tempering at different temperatures, Kehua Induction Heating Equipment
can greatly improve the strength, toughness and fatigue strength of the metal, and can obtain the combination of these properties (comprehensive mechanical properties) 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 purpose of steel quenching is to transform all or most of its structure into martensite, obtain high hardness, and then temper it at an appropriate temperature to make the workpiece have the desired properties. 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. According to the cooling method, the quenching process is divided into four types: single-liquid quenching, double-medium quenching, martensitic graded quenching and bainite isothermal quenching. The effect of quenching The effect of quenching Kehua Induction Heating Equipment heats alloy products or glass to a certain temperature, and then rapidly cools them in water, oil or air, which is generally used to improve the hardness and strength of alloys. Commonly known as 'dipping fire'. The role of quenching What is the purpose of quenching steel? 1. Improve the rigidity, hardness, wear resistance, fatigue strength and toughness of steel. 2. Meet the special physical and chemical performance requirements of special steel such as ferromagnetism and corrosion resistance. The purpose of quenching is to transform the supercooled austenite into martensite or bainite to obtain martensite or bainite structure, and then tempering at different temperatures to greatly improve the rigidity, hardness and wear resistance of steel. properties, fatigue strength and toughness, etc., so as to meet the different requirements of various mechanical parts. It can also meet the special physical and chemical properties of some special steels such as ferromagnetism and corrosion resistance through quenching. Heat the steel to a certain temperature above the critical point Ac3 (hypo-eutectoid steel) or Ac1 (hypereutectoid steel), keep it for a period of time to make it fully or partially austenitized, and then cool at a rate greater than the critical quenching rate, The heat treatment process to transform the supercooled austenite into martensite or lower bainite structure is to quench the steel. The above is what Xiaobian introduced to you about the role of quenching and the role it plays in steel processing. After reading the above information, I believe that you have an understanding of the general steel processing and forging without quenching.
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