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精密铸钢件的浇铸操作都有哪些要求

2019-09-11 16:06:35

精密铸钢件的砂型锻造是一种以砂作为主要造型材料,制作铸型的传统锻造工艺。砂型一般采用重力锻造,有特殊要求时也可采用低压锻造、离心锻造等工艺。砂型锻造的适应性很广,小件、大件,简朴件、复杂件,单件、大批量都可采用。砂型锻造用的模具,以前多用木材制作,通称木模。为改变木模易变形、易损坏等弊病,除单件出产的砂型铸件外,全部改为尺寸精度较高,并且使用寿命较长的铝合金模具或树脂模具。

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