The influence of heat treatment process on stamping die;

In practice, if the quenching and tempering process is improper in the heat treatment, the performance and life of the stamping die will be greatly affected. The quenching deformation and cracking of the working parts of the die, and the early fracture during use are all related to the thermal processing technology of the die. Relevant; here is a brief analysis and introduction; 　1, an important link in the manufacturing process of mold working parts is the forging process. For high-alloy tool steel molds, technical requirements are usually put forward for the distribution of material carbides. Moreover, it is necessary to strictly control the forging temperature range, formulate the correct heating specifications, adopt the correct forging force method, and slow cooling or timely annealing after forging.　2. Use annealing, normalizing or quenching and tempering and other preliminary heat treatment processes for the different materials and requirements of mold working parts to improve the structure, eliminate the structural defects of the forging blank, and improve the processing technology. The high-carbon alloy die steel can eliminate the network secondary cementite or chain carbide through proper preliminary heat treatment, spheroidize and refine the carbide, and promote the uniformity of carbide distribution. This helps to ensure the quality of quenching and tempering, and improve the life of stamping die.　3. Quenching and tempering of the key links in the heat treatment of metal stamping die. If overheating occurs during quenching and heating, it will not only cause great brittleness of the workpiece, but also easily cause deformation and cracking during cooling, which will seriously affect the life of the mold. When the die is quenched and heated, attention must be paid to prevent oxidation and decarburization, and the heat treatment process specifications should be strictly controlled. When conditions permit, vacuum heat treatment can be used. After quenching, it should be tempered in time, and different tempering processes should be used according to technical requirements.　4. The working parts of the mold should be subjected to stress relief annealing treatment after rough machining, the purpose is to eliminate the internal stress caused by rough machining, so as to avoid excessive deformation and cracks caused by quenching. For molds with high precision requirements, they need to undergo stress relief and tempering treatment after grinding or electrical machining, which is conducive to stabilizing the precision of stamping parts and improving the service life. Article recommendation: What is the working principle of the hydraulic press for processing metal stamping parts? Previous post: A brief introduction to the punching process in the processing of stamping parts