循环加热低温淬火提高硅钢片凹模寿命

The Service Life Improvement of Silicon-steel-piece Die by Cycling Heating and Low Temperature Quenching

对ＣｒＷＭｎ钢制硅钢片冷冲凹模进行了循环加热低温淬火的热处理，使凹模使用寿命获得显著提高，降低了产品成本，提高了经济效益。

Through the quenching treatment of the silicon- steel-piece die of CrWMn steel carried out by cycling heating low temperature quenching, the service life of the die is re- markably prolonged and the production cost is reduced, so that the economic beneficial result is greatly increased.