Common problems in the low pressure casting process

Low pressure casting is widely used in metal processing technology, and plays a huge role in my country's modern industry. With the widespread use of low pressure casting in my country, its drawbacks have also been exposed.

1. Oxidation slag inclusion
The reason for the occurrence of oxidized slag inclusion is generally due to the uncleanness of the charge, or the charge is used too many times during use, and there is another reason that can also cause the oxidation slag inclusion during the low-pressure casting process, that is, the casting system Poor design, improper setting when filling.

2. Stoma and shrinkage
Porosity problem is the most common in the process of low pressure casting. It is usually caused by poor exhaust of the mold tool, poor spraying of the mold coating system, and improper setting of the cooling ring, which can also cause pores and shrinkage.

3. Crack
In the process of low-pressure casting, cracks are very common. Unreasonable mold design, sharp corners, and differences in wall thickness will most likely lead to cracks. In order to eradicate the cracks, it is inevitable to improve the structural design of the mold. Only the reasonable design of the mold can help solve the problem.

At present, low-pressure casting technology is widely used in the processing technology. With the development of technology, its drawbacks have become increasingly apparent. Only by analyzing the root cause of the problem can we better solve the problem.