Experimental results showed that the service life of die can be improved evidently by using high temperature quenching and stress relief annealing.
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。
How to repair the cold die with quenching crack is badly needed in industrial productions.
如何修复已出现淬火裂纹的模具，是工业生产中急需解决的问题。
The effects on the properties and die lifespan of forging, conditioning heat treatment, quenching ami tempering, surface heat treatment are researched.
研究了H13钢的锻造、预备热处理、淬火回火、表面热处理对其性能和模具寿命的影响。
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