At present, castings such as China lead die casting are exported overseas, which shows that they are very popular. Today we talk about the problem of blowholes in die castings

The high-pressure injection causes the mold to be filled very quickly so that the molten metal can fill the entire mold before any part solidifies. In this way, even thin-walled parts that are difficult to fill can avoid surface discontinuities. However, this can also lead to air entrapment because it is difficult for air to escape when the mold is filled quickly. This problem can be reduced by placing an exhaust port on the parting line, but even a very precise process will leave pores in the center of the casting. Most die-casting can be completed by secondary processing to complete some structures that cannot be completed by casting, such as drilling and polishing.

For a long time, commonly used solvent-based lubricants include diesel and gasoline. They are conducive to the casting out, but each time a small explosion occurs during the die casting process, which causes the accumulation of carbon on the cavity wall. Compared to water-based lubricants, solvent-based lubricants are more uniform.

In recent years, China zinc die casting manufacturer has made a lot of efforts on demoulding. Now demoulding is no longer a pain.