The failure modes of the combination valve hot forging die in normal working condition are wear, collapse or cold hot fatigue crack.
气门锻模正常失效方式为磨损、压塌和冷热疲劳裂纹。
The high temperature wear property of a new type precision cast hot-forging die steel was studied, and compared with that of H13 steel. The mechanism of the high temperature wear was discussed.
研究了新型精铸热锻模具钢的高温磨损性能，并与H13钢进行对比探讨高温磨损机理。
Hot die forging, in addition to the hot work die steel casting, the wear and heat load large front steel casting mold is often used.
热作模具锻造中，除上述热作压铸模具钢外，磨耗及热负荷大的模具常采用铸型锋钢。
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