Tue May 23 00:05:27 CST 2023
Die-casting different alloys, the die working temperature is different, the requirements of the material are different; die-casting the same alloy, used in different places, the material is also different.
Die-casting moulds generally use hot work die steel H13, SKD61,8407,8417.
The fundamental effective way to avoid aluminum die-casting mold cracking in advance is to improve the purity of the mold steel, reduce or eliminate low melting point impurities. Improve the mold steel high temperature softening performance, so as to improve the anti-cracking performance. Under this premise, do enough die steel forging ratio, with a good heat treatment process, die use maintenance. So as to extend the service life of the mold.
1） Choose the die steel with high purity and low sulfur content, such as: electroslag H13, 1.2344, 2344ESR, SKD61, DAC55, DHA1, 8407, W302, 8418, sulfur-free 8407, sulfur-free 8418 ......, etc.
2) To improve the resistance to high temperature softening performance, use mold steel with high molybdenum content, such as: high molybdenum H13, SKD61, 8407, 8407, sulfur-free 8407, sulfur-free 8418.
There are dozens of varieties of aluminum die-casting mold materials, the aluminum die-casting mold materials introduced above are the common steel in the market. The aluminum die casting mold materials that people use more are: electroslag H13, 2344ESR, SKD61, W302, sulfur-free 8407, sulfur-free 8418.
Die casting die is a method of casting liquid die forging, a process done on a special die casting die forging machine. Its basic process is: the metal liquid first low speed or high speed casting filling into the cavity of the die, the die has a movable cavity surface, it is forged with the cooling process of the metal liquid pressure, both to eliminate the shrinkage of the blank shrinkage defects, but also to make the internal organization of the blank to the forging state of broken grain. The comprehensive mechanical properties of the blank are significantly improved.