Oil quenching: after heating the workpiece in the vacuum heating chamber, move it to the vacuum cooling chamber, fill it with high-purity nitrogen and immediately send it to the oil quenching tank. The quenching medium is oil. The quenching oil in the oil tank is stirred violently and cooled quickly 麻花豆传媒剧国产免费MV.

Advantages: bright workpiece is obtained by vacuum oil quenching, with good microstructure and performance, and no oxidation and decarburization on the surface.