What is the Traditional heat treatment process

The traditional die - casting mold heat treatment process is quenching - tempering, and then the surface treatment technology has been developed.Due to the variety of materials that can be used as die-casting molds, the same surface treatment technology and process application will have different effects on different materials.Kefu shi put forward in view of the mold base material and surface treatment technology of substrate pretreatment technology, on the basis of traditional craft, for different mould materials suitable for processing, thus improving mold performance, improve the die life.Another development direction of heat treatment technology improvement is to combine traditional heat treatment technology with advanced surface treatment technology to improve the service life of die casting mould.Such as the chemical heat treatment method of carbonitriding, combined with conventional quenching and tempering process of NQN (namely the carbonitriding, quenching and carbonitriding composite reinforcement, not only get high surface hardness, and the effective depth of hardening layer increase, rational distribution of carbonitriding layer hardness gradient, tempering stability and corrosion resistance, so as to make the die casting mould in good heart department performance at the same time, improve the surface quality and performance