Results show that different failure modes and lives are dependent on the material composition and subsequent processing.
2
结果表明：h13热锻模具钢经此工艺处理后，具有较高的硬度和热疲劳性能，延长了模具的使用寿命。
The results show that the H13 steel treated by new process has higher hardness and heat-fatigue property. The service life of hot-forge die is prolonged.
3
分析了5crmnmo钢热锻模具的破坏形式，并进行了工艺改进，使模具寿命成倍地增加。
This paper analyses failure way of 5crmnmo heat forging die, improves its technology, and rise its life.
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