The use of precision castings is becoming more and more extensive, and the processing technology is also increasing. The cooling process is an essential process. Some of them need to undergo a solid phase transformation of aluminum alloy, and the metal changes during the phase transformation, for example, the volume of carbon steel changes from a δ phase to a γ phase, and the volume increases when the eutectoid of the γ phase changes.

In the stainless steel precision casting processing technology, the most common processing method is precision casting processing, but irregular operating procedures usually affect the final quality of the casting, so what should we pay attention to during the operation?

Precision casting processing

In the production process of precision castings, due to some hardware facilities, management, pouring cooling and correction problems, casting deformation problems will occur, so how do we deal with casting deformations?

Casting deformation is divided into: minor self-deformation, flaring deformation and warping deformation of the casting.

Trace self-deformation: Among alloy materials, gray cast iron is most prone to trace self-deformation. After the gray cast iron is shaken out and cleaned, the residual stress that exists is mainly the residual thermal stress. Residual stress will not only cause defects such as cold cracking and deformation of the casting, but also the main reason for the slight self-deformation. Even if the residual stress does not exceed the yield strength of the material, under its action, the gray cast iron will slowly undergo slight plastic deformation with the continuation of time. This kind of deformation is called slight self-deformation.

In response to this series of problems, we have learned about some large-scale stainless steel casting industries. The market for stainless steel casting is mainly positioned according to the production process.