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叙述了气门顶杆热挤压模失效形式。通过几种热加工模具材料的对比试验 ,并借助扫描电镜、显微镜观察 ,分析了气门顶杆热挤压模的微观组织 ,指出影响模具寿命的因素 ,从而为提高热挤压模具寿命提供了理论依据。
Describes the valve plunger hot extrusion die failure mode. By comparing several hot-working mold materials and analyzing the microstructure of hot-pressing mold by means of scanning electron microscopy and microscopy, the factors influencing the life of the mold were pointed out, which provided the theory to improve the life of hot-extrusion mold in accordance with.