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铝合金下缸体是汽车发动机中的关键部件之一,采用压铸成形具有相当大的难度。针对某汽车发动机铝合金下缸体零件的结构特点,成功开发了下缸体的压铸件。通过对压铸工艺方案、模具冷却、镶件预热温度、压射工艺参数优化等方面的技术攻关,降低了下缸体压铸件内部气孔、缩松、镶件分离等缺陷出现的几率,提高了铸件品质及产品合格率。
Aluminum alloy lower cylinder body is one of the key components in the automotive engine, the use of die-casting with considerable difficulty. Aiming at the structural characteristics of the aluminum alloy cylinder block parts of a certain automobile engine, the die casting of the lower cylinder block has been successfully developed. Through the technology of die-casting process, mold cooling, insert preheating temperature, the optimization of injection process parameters and other aspects of technology to reduce the lower cylinder die-casting internal porosity, shrinkage, the separation of inserts and other defects appear to improve and improve Casting quality and product qualification rate.