The manufacturing of molds generally involves several p […]
The manufacturing of molds generally involves several processes such as forging, cutting, and heat treatment. In order to ensure the quality of mold manufacturing and reduce production costs, the material should have good forgeability, machinability, hardenability, hardenability and grindability; it should also have small oxidation, decarburization and quenching Deformation and cracking tendency.
It has low resistance to hot forging deformation, good plasticity, wide forging temperature range, low tendency of forging cracking and cold cracking and precipitation of network carbides.
2. Annealing processability
The spheroidizing annealing temperature range is wide, the annealing hardness is low, the fluctuation range is small, and the spheroidizing rate is high.
Large cutting consumption, low tool loss, low surface roughness.
4. Sensitivity to oxidation and decarburization
When heated at high temperature, the oxidation resistance is good, the decarburization speed is slow, the heating medium is not sensitive, and the tendency to pitting is small.
After quenching, it has uniform and high surface hardness.
After quenching, a deeper hardened layer can be obtained, which can be hardened by using a mild quenching medium.
7. Tendency of quenching deformation and cracking
Conventional quenching has small volume changes, shape warping, slight distortion, and low tendency of abnormal deformation. Conventional quenching has low cracking sensitivity and is not sensitive to quenching temperature and workpiece shape.
The grinding wheel is relatively low in wear, and the non-burn limit grinding consumption is large. It is not sensitive to the quality of the grinding wheel and cooling conditions, and is not prone to abrasion and grinding cracks.