| 真空吸铸的工艺原理是把熔模壳型放在密封室内 |
| 添加时间：2019/10/14 15:23:10 浏览次数： |
| 真空铸造是金属在真空室中进行熔炼、浇注和结晶的铸造过程。真空铸造可以使金属中的气体含量减到最少，可以防止金属氧化 。 Vacuum casting is a process in which metals are melted, poured and crystallized in a vacuum chamber. Vacuum casting can minimize the gas content in metals and prevent metal oxidation. 真空吸铸是将 铸型 浇口（或升液管）插入金属液中，再将铸型抽真空，使铸型型腔内为负压，在负压作用下使金属液沿浇口（或升液管）上升并充满铸型、凝固成形，从而获得铸件的一种铸造方法。 Vacuum suction casting is to insert the casting gate (or riser) into the liquid metal, then vacuum the casting mould, so that the cavity of the casting mould is negative pressure. Under the negative pressure, the liquid metal rises along the gate (or riser) and fills the casting and solidification forming, thus obtaining a casting method. 真空吸铸的工艺原理是把熔模壳型放在密封室内，密封室下降，直浇道浸入液体金属中，而后启动真空泵将密封室抽成真空，液体同时被吸铸。型壳内铸件凝固后，真空状态解除，浇道内的残余金属液体回流到 熔炉中，经清砂 得到真空吸铸铸件。 The principle of vacuum suction casting is to put the mould shell in the sealed chamber, the sealed chamber drops, the direct runner is immersed in liquid metal, and then start the vacuum pump to vacuum the sealed chamber, and the liquid is sucked into the casting at the same time. After solidification of the castings in the shell, the vacuum state is relieved, the residual metal liquid in the runner is refluxed into the furnace, and the vacuum suction castings are obtained by sand cleaning. |
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