The spray-casting production method is characterized in that molten metal liquid is sprayed into fine particles (10 to 500 micrometers) through an atomizing device in a very short period of time, and the spray-cast is stacked on a predetermined deposition plate.
The characteristics of the larger injection molding process are the rapid cooling, solidification and atomization of the molten metal, enabling the supersaturated second phase in the molten metal to be finely dispersed and evenly distributed, which overcomes the slow cooling rate in the traditional casting process. The resulting macro segregation and organizational coarseness. The injection molding process is directly formed from a molten metal into a solid body, which also overcomes the problems of cumbersome and multi-pass treatment procedures, poor organization density, and severe powder oxidation during the powder metallurgy process, resulting in a higher ratio of injection molding materials. Powder metallurgy materials have low porosity and good properties.
There are many advantages of injection molding, such as: high deposition rate, (usually 0.25 ~ 1.7 kg / sec); shape can be complex, can reduce the processing process; alloys are diversified, components are not limited; rough body The density is higher than that of powder metallurgy, and the oxide content is also small.
In the injection molding process, the molten metal can be rapidly cooled, solidified and solidified into a solid shape, which overcomes the problems of macro-segregation in the conventional casting process and oxidation in the powder metallurgy process, and exhibits excellent material properties.
The injection molding process method is a new type of aluminum alloy molding method, and is a better choice for building materials, automotive parts, and composite materials used in nuclear power plants.
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