As a gear produced through powder metallurgy (powdering, molding, sintering, etc.), powder metallurgy gears show unique advantages in multiple dimensions compared with gears made of traditional forging, casting or machining, especially in mass production and specific application scenarios. The following are its main advantages:
1. High material utilization rate and low production cost
Near-net forming, reduce processing volume: powder metallurgy technology can directly press metal powder into gear blanks close to the final shape. After sintering, the dimensional accuracy is high, and there is no need for a lot of cutting (such as turning, milling, grinding, etc.), and the material utilization rate can reach more than 95% (the material utilization rate of traditional mechanical processing is often lower than 5 0%).
The economy of mass production is remarkable: when the production scale reaches a certain amount (such as more than 10,000 pieces), the cost of the mold is shared, and the cost of the unit product is significantly lower than that of the traditional process. It is especially suitable for gears with complex structures (such as steps and shaped holes), which avoids the cost increase caused by complex processes in traditional processing.
The core advantages of powder metallurgy gears are concentrated in the economy of mass production, the ease of realization of complex structures, material utilization rate and environmental protection, especially in automobiles (such as gearbox gears, motor gears), household appliances (such as washing machine clutch gears), engineering machinery and other fields. However, it also has limitations such as high single cost (small batch) and slightly low impact toughness, which need to be selected according to specific working conditions.
