OIL-IMMERSION QUENCHING COOLING PRECURSOR AND OIL-IMMERSION QUENCHING COOLING METHOD

摘要

An oil-immersion quenching cooling precursor and an oil-immersion quenching cooling method. A workpiece is an axle-liked part, and several separation rings (1) are arranged on the workpiece along an axial direction so as to divide the axle-liked part into a plurality of sections before oil-immersion quenching cooling. In a cutting process before a quenching cooling working procedure, the several separation rings (1) distributed along the axial direction are reserved outside a dimension required by the workpiece. The oil-immersion quenching cooling precursor and the oil-immersion quenching cooling method are capable of improving the quenching hardness of an axle-liked part and the uniformity of the hardness, improving the inherent quality of a workpiece, saving alloy element resources, reducing production cost, and improving production efficiency.