一、概述常规淬火冷却方式一般部采用浸没式冷却。这种淬火冷却方式是将工件加热至淬火温度后浸没在淬火介质中,工件四周被介质包围,经气膜导热,沸腾导热及对流导热三个阶段,温度急速降低下来,达到淬火目的。这种冷却方式的优点是操作简单,但在保证淬火质量方面尚存在下列缺点:工 First, an overview of conventional quenching and cooling General submerged cooling. This quenching and cooling method is the workpiece is heated to quenching temperature immersed in the quenching medium, the workpiece surrounded by the medium around the film by the thermal conductivity, boiling heat conduction and convection heat three stages, the temperature dropped rapidly to achieve the purpose of quenching. This cooling method has the advantage of simple operation, but there are still some shortcomings in ensuring the quality of quenching: