铝合金模具钢型压铸模具在生产一段时间后会产生龟裂，经过分析认为，产生此现象的原因主要有以下几点: (1)模具温度偏高应力过大 (2)模具模仁material使用8407,skd61 (3)模具热处理硬度过
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