Experimental results showed that the service life of die can be improved evidently by using high temperature quenching and stressreliefannealing.
实践证明,采用高温淬火和中间消应力退火可显著提高其使用寿命。
2
The effects of protective atmosphere on magnetic properties of non-oriented silicon steel for high-efficiency motors after stressreliefannealing are investigated.