Die-casting technology of stainless steel valve body

The invention relates to a die-casting technology of a stainless steel valve body. The die-casting technology comprises the following steps that firstly, a die is heated, wherein the die is heated to range from 300 DEG C to 500 DEG C, and comprises a die body, cavities and cores used for carrying out die casting on the stainless steel valve body are arranged in the die body, an injection channel for connecting the cavities is further arranged on the die body, the inner walls of the cavities are covered with alloy layers, and an alloy material of each alloy layer comprises, by mass, 10-28 parts of chromium, 10-22 parts of nickel, 0.5-11 parts of manganese, 0.01-0.07 part of molybdenum, 50-80 parts of iron and the balance impurities unavoidable in the machining process; secondly, a release agent is sprayed into the cavities; thirdly, molten stainless steel is injected through the injection channel; and fourthly, the molten stainless steel is cured and formed, and a product is taken out. According to the technic