The powder metallurgy automobile gear hub formed by one-time pressing of the powder metallurgy process can realize no cutting processing, and can well improve the density distribution of the powder metallurgy green compact. After forming and sintering, metal materials, composite materials and various It has the advantages of high material utilization rate, low production cost, high production efficiency and suitable for mass production.
The gear hub is a typical H-type powder metallurgy structural part and has a complex structure, which is mainly manifested in:
1. The wall thickness difference is large, and the wall thickness of the outer teeth of some products is only 1.5mm;
2. There are many steps and the height difference is large. Most of the gear hub end faces have 3-4 shoulders, and the height difference varies from 3 to 15mm. The height difference between the outer teeth and the rib plate is more than 10mm;
3. High density, the density is above 6.9