The casting process of stainless steel precision castings is a casting method similar to traditional casting processes, which can obtain more accurate shapes and higher casting accuracy. The usual practice is to design and manufacture molds according to the requirements of the product (less or not allowed), and then cast wax through casting to obtain the original wax mold. Repeat the painting and sanding process on the wax mold to make the shell hard and dry; Then melt the internal wax mold to obtain a cavity for dewaxing. A calcined shell with sufficient strength; Metal materials required for casting; Shelling and sanding can be used to obtain high-precision finished products, which can be subjected to heat treatment and cold processing according to the needs of the product.

In the process of casting stainless steel precision castings, there are strict requirements for the process operation, and each process has certain requirements. So, what are the requirements for the casting operation of precision casting?

1. The requirements for stainless steel precision castings in casting operations are generally carried out according to the following points: according to the requirements for casting large and medium-sized steel castings, the steel is allowed to stand still for 1-2 minutes after casting the ladle. After the solidification of the casting is completed, the pressure iron box card should be removed in a timely manner to eliminate casting shrinkage and avoid crack defects in precision castings.

2. The casting temperature and casting temperature of precision cast steel have a significant impact on the quality of castings. The casting temperature should be determined based on the structure of precision cast steel and the type and characteristics of casting alloys. According to a reasonably selected casting steel temperature model, the casting steel temperature is generally between 1540 and 1580 ℃ (the temperature of molten steel inside the ladle).

Under the condition of a certain pouring speed, the gas inside the mold can be smoothly discharged, and a higher pouring speed can be used for the solidification of precision castings. The requirement for sequential solidification of precision castings is low casting speed.