The quality of thermal processing of injection moulds on the performance of injection moulds

The quality of thermal processing of injection moulds has a great impact on the performance and service life of injection moulds. In the actual life of the work of our injection molding workshop on the design and production of various injection molds require excellence, and the specific operation will also have problems, so let Shenzhen GonSon injection mold manufacturers explain to you some of the details of the use of stamping injection molds need to pay attention to, injection mold work parts quenching deformation and cracking, the use of the process of early fracture, is related to the thermal processing of the touch tool. process.

Injection mold

(1) forging process, which is an important part of the injection mold working parts manufacturing process. For high alloy tool steel injection mold, usually on the material carbide distribution and other metallurgical organization of technical requirements. In addition, should also strictly control the forging temperature range, the development of the correct heating specification, the use of the correct forging force method, as well as forging after slow cooling or timely annealing.

(2) preparatory heat treatment. Should be depending on the injection mold work parts of the material and the requirements of the different use of annealing, normalizing or tempering, and other preparatory heat treatment process, to improve the organization, eliminate the organizational defects of the forging blank, improve the processability. High-carbon alloy injection mold steel after appropriate preparatory heat treatment can eliminate the network of the secondary carburized body or chain carbide, carbide spheroidization, refinement, to promote the uniformity of carbide distribution. This is conducive to ensuring the quenching and tempering quality and improving the lives of the injection mold.

(3) quenching and tempering. This is the key link in the heat treatment of injection mold. If the quenching and heating overheating, not only will make the workpiece cause greater brittleness but in cooling is easy to cause deformation and cracking, seriously affecting the life of the injection mold. Die quenching and heating should pay special attention to prevent oxidation and decarburization, should be strictly controlled heat treatment process specifications, in the case of conditions permitting, vacuum heat treatment can be used. After quenching should be tempered in time, and according to the technical requirements of the different tempering processes.

(4) stress relief annealing. Injection mold work parts in the rough machining should be stress relieving annealing treatment, to eliminate the internal stress caused by rough machining, to avoid quenching called excessive deformation and cracking. For the high precision requirements of the injection mold, in the grinding or electrical processing after the stress relief annealing treatment is also required to help stabilize the accuracy of the injection mold, improve service life.