he 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 sensitivity and quenching Deformation and cracking tendency.1. ForgeabilityIt has low hot forging deformation resistance, good plasticity, wide forging temperature range, low tendency of forging cracking and cold cracking and precipitation of networked carbides.2. Annealing processabilityThe spheroidizing annealing temperature range is wide, the annealing hardness is low, the fluctuation range is small, and the spheroidizing rate is high. 3. Machinability The cutting amount is large, the tool loss is low, and the machined surface roughness is low.4. Sensitivity to oxidation and decarburizationWhen heated at high temperature, the oxidation resistance is good, the decarburization speed is slow, the heating medium is not sensitive, and the tendency of pitting is small.5. HardenabilityAfter quenching, it has uniform and high surface hardness.6. Hardenability After quenching, a deeper hardened layer can be obtained, and it can be hardened by using a mild quenching medium.7. Tendency of quenching deformation and cracking Conventional quenching has small volume change, shape warping, slight distortion, and low tendency of abnormal deformation. Conventional quenching has low sensitivity to cracking, and is insensitive to quenching temperature and workpiece shape. 8. GrindabilityThe 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 it is not easy to cause abrasion and grinding cracks.
Post time: Dec-02-2021