鑄造銅鑄件的細節有哪些?

What are the details of casting copper castings?

所謂的熔模鑄造工藝僅需要使用易熔材料製作易熔模型 ，然後再塗覆幾層特殊的耐火塗層 ，然後進行幹燥和硬化 。殼體 ，通過蒸汽或熱水將殼體中的模型熔化 ，然後將其放入沙箱中 ，並在其周圍填充幹砂 ，然後將模具放入烘烤爐中並進行高溫烘烤 。模具或殼體燒製後 ，將熔融金屬倒入其中以獲得鑄件 。

The so-called investment casting process only requires the use of fusible materials to make a fusible model, then coating several layers of special refractory coating, and then drying and hardening. Shell, the model in the shell is melted by steam or hot water, and then put into the sandbox, and filled with dry sand around it, and then the mold is put into the oven and baked at high temperature. After the mold or shell is fired, the molten metal is poured into it to obtain the casting.

精密鑄造的規模精度高 。當然 ，由於精密鑄造的無序過程 ，影響鑄造規模精度的因素很多 ，型腔的表麵形狀由於使用了精加工而很高 ，因此熔模的表麵光潔度高 。比較高 。

The precision of precision casting is high. Of course, due to the disordered process of precision casting, there are many factors affecting the precision of casting scale. The surface shape of the cavity is very high due to the use of finish machining, so the surface finish of investment mold is high. Relatively high.

此外，外殼由特殊的粘合劑和耐高溫的耐火材料製成 。耐火塗層塗覆在熔模上 ，與熔融金屬直接接觸的型腔的內外表麵具有很高的耐火性 。表麵光潔度 。因此 ，熔模鑄造的表麵光潔度高於常規鑄造 。

In addition, the enclosure is made of special adhesive and high temperature resistant refractory. The internal and external surface of the cavity which is in direct contact with the molten metal has high fire resistance. Surface finish. Therefore, the surface finish of investment casting is higher than that of conventional casting.

精密鑄造的優點是具有很高的氧化皮尺寸和表麵光潔度 ，因此可以減少加工工作量 ，但零件數量也更高 。零件可以有一些加工餘量 。甚至某些鑄件僅需要拋光和拋光 ，無需加工即可使用 。

The advantage of precision casting is high oxide scale size and surface finish, so it can reduce the processing workload, but the number of parts is also higher. Parts can have some machining allowance. Even some castings need only polishing and polishing, and can be used without machining.

熔模鑄造方法的另一個優點是 ，它可以鑄造各種無序鑄件 ，特別是用於高溫合金鑄件 。精密鑄造工藝不僅可以實現批量生產 ，而且可以保證鑄造的一致性 ，避免加工後殘留刀具的應力集中 。

Another advantage of investment casting method is that it can be used to cast various kinds of disordered castings, especially for superalloy castings. The precision casting technology can not only realize mass production, but also ensure the consistency of casting and avoid the stress concentration of residual tool after machining.