Low-pressure casting is widely used in metal processing technology and plays a huge role in China's modern industry. With the widespread use of low-pressure casting in China, the disadvantages it brings are also exposed.
1. Oxidation slag
The cause of the occurrence of oxidized slag is generally due to the uncleanness of the charge, or the excessive use of the charge in the process of use. There is also a reason that can lead to the oxidized slag during the low-pressure casting process, that is, the casting system Poor design, improper setting during filling.
Second, stomata, shrinkage
Porosity problems are most common in the process of low-pressure casting. It is generally caused by poor exhaust of the mold tool, poor spray coating of the mold coating system, and improper cooling ring settings, which can also cause porosity and shrinkage.
In the process of low-pressure casting, cracks are very common. The design of the mold is unreasonable. The sharp corners and the thickness of the walls are different. The choice of mold is only helpful if the mold design is reasonable.
Low-pressure casting technology is very commonly used in China's processing technology. With the development of technology, the shortcomings of it have become increasingly apparent. We can only solve the problem better by analyzing the root cause of the problem.