熔模精密铸造的优点
Advantages of Investment Casting
熔模精密铸造最大的优点就是由于熔模铸件有着比较高的尺寸精度和表面光洁度,所以可减少机械加工工作,只是在零件上要求较高的部位留少许加工余量即可,甚至某些铸件只留打磨、抛光余量,不必机械加工即可使用。熔模铸造还可以把一些焊接组合件铸成一体,省去组合与焊接工作。由此可见,采用熔模精密铸造方法可大量节省机床设备和加工工时,大幅度节约金属原材料。
The greatest advantage of investment casting is that the investment casting has a relatively high dimensional accuracy and surface finish, so it can reduce the work of mechanical processing, only a little processing allowance can be left in parts with higher requirements, or even some castings can be used only with polishing and polishing allowance, without mechanical processing. Investment casting can also cast some welding assemblies into one, eliminating the combination and welding work. It can be seen that the investment casting method can save a lot of machine tools and processing time, and greatly save metal raw materials.jueyuanziz.jk56.org taoguan.jk56.org fuhekaiguan.jk56.org
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熔模精密铸造方法的另一优点是材质选用灵活,它可以铸造各种合金的复杂铸件,特别是铸造耐热钢、高温合金等特殊材质铸件。如喷气式发动机的叶片,其流线型外廓与冷却用内腔,用机械加工工艺几乎无法形成。用熔模精密铸造工艺生产不仅可以做到批量生产,保证了铸件的一致性,而且避免了机械加工后残留刀纹的应力集中。
Another advantage of investment casting method is flexible material selection. It can cast complex castings of various alloys, especially special castings of heat-resistant steel and superalloy. For example, the blade of jet engine, its streamlined outline and cooling chamber can hardly be formed by mechanical processing technology. Using investment casting technology can not only achieve batch production, ensure the consistency of castings, but also avoid the stress concentration of residual knife marks after machining.