The current frequencies commonly used in абсталяванне для высокачашчыннага гашэння з’яўляюцца:

1. Высокачашчынны нагрэў: 100 ~ 500 кГц, звычайна выкарыстоўваецца 200 ~ 300 кГц, гэта электронная трубка высокачашчыннага нагрэву, глыбіня загартоўвання складае 0.5 ~ 2.5 мм, падыходзіць для дробных і сярэдніх дэталяў.

2. 2. Intermediate frequency heating: The current frequency is 500～10000HZ, usually 2500～8000HZ. The power supply equipment is a mechanical intermediate frequency heating device or a silicon controlled intermediate frequency generator. The depth of the hardened layer is 2-10 mm. Suitable for large diameter shafts, medium and large gears, etc. 3. Power frequency heating: The current frequency is 50HZ. Using mechanical power frequency heating power equipment, the depth of the hardened layer can reach 10-20mm, which is suitable for surface quenching of large-diameter workpieces.