The reasons causing poor surface quality and short working life of die-molds were analyzed. In order to solve the problem of surface roughness exceeding requirement caused due to cracking of die mold, the problem of porridge-type veins caused due to stripping agent accumulation, and problem of small pittings on the sealing surface of the casting, and so on, proper improving measures were adopted including changing ingates locations, chamfering the casting edge, adjusting the automatic coating sprayer and change stripping agent. As a result, not only the roughness of the cast surface has met the requirement for the sealing surface, the machining procedure was cancelled, and the working life of the die-mold was prolonged, as well as the production cost was reduced.%对泵体类铝合金压铸件表面质量差和模具寿命短的原因进行了分析,并针对由于模具开裂引起铸件粗糙度超差,“粥样”花纹、“细小麻点”等铸件表面质量问题,采取了合理安排内浇道、增加倒角、调整自动喷涂机及更换脱模剂等解决措施.结果使铸造表面达到了密封面的粗糙度要求,免除了机加工,并且延长了模具使用寿命,降低了产品的生产成本.
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