【摘要】 3Cr2W8V钢压铸模具在压铸了几件铝件后发生断裂失效,采用化学成分分析、宏观检验、金相检验和断口分析等方法,对3Cr2W8V钢压铸模具的断裂原因进行了分析。结果表明:模具材料在断裂处的显微组织不均匀,存在大颗粒状碳化物或集中分布的未溶碳化物是造成模具断裂的直接原因。更多还原

【Abstract】 The fracture reason of 3Cr2W8V steel pressure-casting die had been analyzed by mean of chemical compositions analysis,macro examination,metallographic examination and fracture analysis.The results show that there were many big-size carbides or liquation carbides in the steel near the fracture,which resulted in the fracture of the 3Cr2W8V steel pressure-casting die.更多还原