Metal Stamping Punch Moulds
Various new technologies for surface treatment of die-casting molds are emerging, but in general they can be divided into the following three categories:
(1) Improvement techniques of conventional heat treatment processes;
(2) Surface modification technology, including surface thermal diffusion treatment, surface phase transformation strengthening, and electric spark strengthening technology;
(3) Coating technology, including electroless plating.
Die casting molds are a large class in the mold. With the rapid development of China's automobile and motorcycle industry, the die-casting industry has ushered in a new era of development. At the same time, it also puts forward higher requirements on the comprehensive mechanical properties and life of die-casting molds. Luo Baihui, secretary-general of the International Model Association, believes that it is still difficult to meet the ever-increasing use performance requirements by relying only on new mold materials. Various surface treatment techniques must be applied to the surface treatment of die-casting molds to achieve high efficiency, high precision and long life requirements. In various molds, the working conditions of the die-casting mold are more demanding. Pressure casting is to make the molten metal fill the mold cavity under high pressure and high speed and die-casting. It is repeatedly in contact with the hot metal during the working process. Therefore, the die-casting mold is required to have high heat fatigue resistance, thermal conductivity wear resistance and corrosion resistance, impact toughness, red hardness, good release properties, etc. Therefore, the surface treatment technology for the die-casting mold is highly demanded.