Die-casting molds are a large category of molds. With the rapid development of my country's automobile and motorcycle industry, the die-casting industry has ushered in a new period of development. At the same time, it also puts forward higher requirements for the comprehensive mechanical properties and life of die-casting molds. Casting aluminum alloys, to meet the ever-increasing performance requirements, it is still difficult to meet only by the application of new mold materials. Various surface treatment technologies must be applied to the surface treatment of die-casting molds to achieve high efficiency, high precision and High life expectancy. Among all kinds of molds, the working conditions of die-casting molds are relatively harsh.

Die casting is to make molten metal fill the mold cavity under high pressure and high speed and die casting, and repeatedly contact with hot metal during the working process. Therefore, the die casting mold is required to have high thermal fatigue resistance, thermal conductivity, wear resistance, and corrosion resistance. , Impact toughness, red hardness, good mold release, etc. Therefore, the requirements for the surface treatment technology of die-casting molds are relatively high.