Powder Compaction Process of Cemented Carbide mould

Tungsten Carbide Mould has the advantages of high hardness, high strength, good wear resistance, good toughness, impact resistance, good electrical processing performance, high inner cavity finish, wide application range, good non-stick and very durable. It is a pressing die made of hard alloy material after precision grinding, and its service life is 5 to 10 times that of ordinary steel pressing dies. Tungsten Carbide Mould is the most ideal mold material for the compression molding of magnetic powder, ceramic powder, refractory metal powder, copper, iron, stainless steel and other metal powder materials.

1. Production Process
Ingredients (select tungsten carbide powder + cobalt powder according to the applicable requirements) → fully mix and crush → add molding agent after sieving → dry again → sieve to obtain the mixture → granulate the mixture, press molding → sinter in a vacuum furnace → sinter Post-blank→inspection (non-destructive ultrasonic flaw detection)→drawing design→mold sleeve and mold base inlay or welding→electric machining (electric spark perforation or wire cutting) forming→grinding and polishing treatment→assembly→testing and packaging.

2. Influencing Factors and Precautions:
First of all, powders with high hardness, low plasticity and high friction have poor compaction performance, which can be appropriately improved by adding lubricants or molding agents. Compression performance can be improved by using mixed particle size powders and powders with complex particle shapes.
Secondly, the smoother the surface of the forming mold, the higher the hardness, and the greater the rigidity, the more conducive to the improvement and uniformity of the bad body density.
Finally, avoid collision with the mold during installation and use, and avoid personal safety accidents caused by scratching the edges of the mold.