There are many kinds of casting materials, most of which are based on cast iron and cast steel, but there is a material that we are more or less in contact with, that is stainless steel. The following small series will introduce the forging of stainless steel precision castings.

Stainless steel precision casting is different from other traditional industries, it is a new casting technology, and it is still in the developing stage in our country. Stainless steel is known for its high corrosion resistance, high temperature resistance, good heat resistance, high resistance to acid medium, high temperature oxidation resistance. It has a very good advantage is that investment casting has very high dimensional accuracy, the surface of the product is very clean, and stainless steel precision casting in use to a certain extent reduces the work of mechanical processing. But for stainless steel precision casting, advantages and casting difficulties coexist, because the shrinkage rate of stainless steel is much greater than that of cast iron, the shrinkage rate of casting, shrinkage rate defects are more likely to occur, so stainless steel precision casting processing what are the difficulties?

Precision stainless steel castings

1, stainless steel precision casting processing, work hardening is very serious: because there is a hardening tendency in cutting, machining tool to machining hardening part, will easily lead to shorten the life of the machining tool.

2, stainless steel precision casting processing will be easy to stick the knife. No matter what material of stainless steel there will be chip is strong and tough, cutting temperature is a very high characteristic.

3, stainless steel this material strength, cutting plastic deformation, tangential stress, so the cutting force is large. In addition, the thermal conductivity of this material is very poor, and the temperature is only concentrated near the cutting edge of the tool, which is relatively small in a narrow area and not easy to touch. Therefore, stainless steel precision casting is also the most troublesome problem for all steel casting manufacturers.

4, because of the problem of stainless steel material, stainless steel processing technology will lead to high tool wear, material contains high melting point elements, cutting temperature, plastic, will make tool wear fast, change, often sharpening, which will also affect the production efficiency, improve the cost of using tools.