The die-casting process is a process of organically combining and using the three die-casting elements of die-casting alloy, die-casting mold and die-casting machine. The principle of the die-casting process is to use high pressure to press molten metal into a precision metal mold cavity at high speed, and the molten metal is cooled and condensed under pressure to form a die-casting part. Cold and hot chamber die casting are two basic methods of die casting process. In the cold chamber die-casting, the molten metal is poured into the press chamber by manual or automatic pouring equipment, and then the injection punch advances to hydraulically press the metal into the cavity. In the hot chamber die casting process, the pressure chamber is perpendicular to the crucible, and the molten metal flows into the pressure chamber automatically through the feed port on the pressure chamber. The injection punch moves downward to push the molten metal into the cavity through the gooseneck. After the molten metal has condensed, the die-casting mold is opened and the casting is taken out to complete a die-casting cycle.
China Auto Parts Factory introduces the advantages of die casting process:
1. Metal parts with messy shapes, clear outlines, thin-walled deep cavities can be made. Because molten metal maintains high fluidity under high pressure and high speed, it is possible to obtain metal parts that are difficult to process by other processing methods.
2. The dimensional accuracy of die castings is relatively high, up to IT11-13, sometimes up to IT9, the surface roughness reaches Ra0.8~3.2um, and the interchangeability is good.
3. High material utilization rate. Because of the high precision of die-casting parts, it can be installed and used only after a small amount of machining, and some die-casting parts can be directly installed and used. The material utilization rate is about 60%~80%, and the blank utilization rate reaches 90%.
4. High production efficiency. Because of the high-speed filling, the filling time is short, the metal industry condenses quickly, and the die-casting operation cycle is fast. Among various casting processes, the die-casting method has the highest yield and is suitable for mass production.
5. Convenient to use inserts. It is easy to set a positioning mechanism on the die-casting mold to facilitate the insert casting of inserts and meet the local special performance requirements of the die-casting parts.
Through the above introduction,China Motorcycle Parts Factory hopes that you can simply refer to the content of this article in future use.
