Have we often heard some words like quenching and tempering, but many people don't know what it means. Do you want to know more about them? Let Kehua Induction Heating Equipment introduce us to what quenching and tempering is. I mean they have some connection. Quenching and Tempering 1. Tempering reheats the quenched workpiece to an appropriate temperature lower than the lower critical temperature Ac1 (the starting temperature of pearlite to austenite transformation during heating). Metal heat treatment process cooled in medium. Or heat the quenched alloy workpiece to an appropriate temperature, hold it for a period of time, and then cool it slowly or rapidly. Generally used to reduce or eliminate internal stress in quenched steel, or reduce its hardness and strength to improve its ductility or toughness. The quenched workpiece should be tempered in time, and the required mechanical properties can be obtained through the combination of quenching and tempering. Second, Guangzhou Youzao Guangzhou Kehua Technology Co., Ltd. aims to 'produce energy-saving and environmentally friendly induction heating equipment to save money for usersThe full range of high-frequency induction heating equipment manufactured include: intermediate frequency Induction melting furnace
, super audio frequency heating machine, ultra high frequency heating equipment and supporting medium frequency diathermy forging furnace, CNC quenching machine tool, chiller and related supporting equipment, which are widely used in metal processing. Industries, such as metal preheating, high frequency welding (brazing), diathermy forming, quenching, annealing, heat shrinking and other processes, all products can be customized according to customer process requirements. 3. Why should it be quickly tempered after quenching? 1. For low carbon martensitic steel, because the quenched structure has small stress and good toughness, it is not a big problem if it is not tempered in time, and it can even be used directly without tempering. 2. For medium carbon steel, due to the small stress of the quenched structure and good strength and toughness, the problem of not tempering in time is not very big, that is, the time interval should not be too long, and the unstable structure will change if the time is too long. The stress will increase the risk of deformation cracking. Therefore, it is best to temper in time, and those that cannot be tempered in time should not exceed 24 hours. 3. For high carbon steel, since the quenched structure is flaky martensite, twin crystals and microcracks are generated inside, and the supersaturation degree is large. Therefore, the stress is large and the brittleness is strong, and the risk of deformation and cracking is increased. Timely tempering, the longest should not exceed 6 to 8 hours. Of course, the above statement does not consider the effect of alloying elements and the influence of the shape of the part. Generally speaking, the more alloying elements, the more complex the shape of the part, and the shorter the interval between quenching and tempering. Quenching and tempering What does quenching and tempering mean? What is their connection? It is estimated that everyone has learned through the introduction of Kehua Induction Heating Equipment that quenching and tempering is still relatively important in some special industries.
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