局部挤压工艺在铝合金重型变速箱后盖压铸上的应用

Application of Local Squeezing Process on the Die Casting of Aluminum Heavy Duty Gearbox Back Cover

在重型变速箱后盖上应用局部挤压的工艺,并对局部挤压工艺进行了生产中优化,以期解决铝合金压铸件局部厚大部位缩孔等缺陷问题。结果表明,局部挤压工艺可以有效的解决原来铸件的缩孔缺陷。通过最佳工艺生产验证,铸件合格率得到大幅提升。

The local squeezing process was applied to the back cover of heavy duty gearbox,and the local squeezing process was optimized in production,in order to solve the defects such as local thickness and large shrinkage holes of aluminum alloy die castings.The results show that local squeezing process can effectively solve the shrinkage defects of original castings.Through the verification of the best process,the qualified rate of the casting has been greatly improved.