Low-pressure casting is widely used in metal processing technology, in China's modern industry plays a huge role, with the low-pressure casting in China's extensive use, it brings the drawbacks also exposed.
First, the oxidation of slag
The reason for the occurrence of oxidized slag is generally because the charge is not clean, or in the course of the use of the charge too much use, there is a reason can also lead to low-pressure casting process of oxide slag, that is, casting system Poor design, improperly set in filling.
Second, the stomata, shrinkage
The stomatal problem is most common in the process of low pressure casting. It is generally caused by the poor exhaust of the mold tool. The poor coating of the mold coating system, the improper cooling ring, can also lead to the formation of pores and shrinkage.
Low-pressure casting process, the cracks are very common, the mold design is unreasonable, sharp corners, thick wall thickness difference will lead to the occurrence of cracks, in order to eradicate the crack phenomenon, improve the mold structure design is inevitable The choice, only the mold design is reasonable, the solution to the problem can help.
Low pressure casting technology in China's processing technology is very common, with the development of technology, which drawbacks are increasingly apparent, we only analyze the root causes of the problem in order to better solve the problem.