【Haichuan Expands Horizons】Do you know how the process of local high-frequency quenching works?
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The purpose of high-frequency quenching is to make the parts harder and more wear-resistant! Below is the process of local high-frequency quenching.
Local high-frequency quenching involves passing high-frequency current through the metal area to be treated, causing it to heat up rapidly to a certain temperature and then cool down quickly, thereby hardening the surface. This process is mainly divided into three steps: preheating, quenching heating, and cooling. Preheating is done to reduce thermal stress. Quenching involves heating the material to the austenitization temperature, while cooling is achieved by using water, oil, or other cooling media to rapidly lower the temperature, thereby causing martensite to form on the metal surface and achieving a hardening effect. .
It’s a familiar scent; the small coil is an electromagnetic induction coil to which high-frequency current is applied. Once, on the welded pipe production line, sand passed through the induction coil over several years. I’ve seen medium-frequency induction equipment used for quenching equipment in cigarette factories; after heating, the parts are placed in oil to cool down, and the processing fee is 15 yuan. Now, maintenance personnel also commonly use electromagnetic inductors to heat bearings for hard fitting.
Equipment that seems simple but is actually not
What people find amazing is mainly the induction heating aspect – one coil per unit, and it turns red in an instant; as for the other cooling methods, oil quenching or water quenching are quite easy to understand
Spraying is simple; as long as there is enough pressure, there’s no problem