PM powder pressing manufacturers talk about the advantages of powder metallurgy gears?

Jul 24,2022


PM powder pressing manufacturers: What are the advantages of powder metallurgy gears?

    Nowadays, the variety and output of powder metallurgy gears are increasing, and the scope of application is also increasing, because its advantages are unparalleled, so what are the advantages of powder metallurgy gears? The technicians of PM powder pressing manufacturers will answer your questions:

    1. Powder metallurgy saves labor and materials, and has high production efficiency

    Generally, when powder metallurgy is used to manufacture powder metallurgy gears, only five processes are required: forming, sintering, heat treatment, tempering, and oil immersion. There are ten processes such as groove, keyway, gear hobbing, deburring, heat treatment, tempering, etc. Therefore, when using powder metallurgy method to manufacture, due to labor saving, material saving, high production efficiency, less equipment used and energy saving, gears The production cost is significantly reduced.

    2. High utilization rate of powder metallurgy materials

    When gears are manufactured by powder metallurgy, they can be directly shaped into the shape of the finished part, and any scrap from the green body prior to sintering can be re-crushed and utilized, which is not possible when gears are manufactured by other processing methods.

    3. The repeatability of powder metallurgy gears is very good

    Powder metallurgy gears are formed by molding. Under normal conditions of use, a pair of molds can press tens of thousands to hundreds of thousands of gear blanks. When manufacturing gears by machining, it is difficult to make the shape and size of each gear consistent. Various variables such as tool wear, poor machining device rigidity, different gear blank hardness, different machine tool bearing clearances, etc., will cause the manufactured gears to vary in shape and size.

    4. Integrated manufacturing of parts

    Powder metallurgy can integrate several parts together, thereby saving post-processing and assembly costs. When using powder metallurgy to manufacture multiple gears and compound gears, the gear teeth can be directly pressed to the full height of the corners of adjacent gears, which is generally used in mechanical processing. It is difficult to do in the middle, such as milling, planing or hobbing.

    5. Material density is controllable

    The material density of powder metallurgy gears is controllable and has a certain number of connected pores. Powder metallurgy gears are usually immersed in 5%-20% lubricating oil for a certain degree of self-lubrication, thereby improving wear resistance. Powder metallurgy can also be used for manufacturing Different parts of gears with different densities, for example, the hub portion of the gear can be made at a lower density, enhancing self-lubrication, and the teeth are made at a high density to increase toughness and impact strength.

    6. Good surface roughness

    In powder metallurgy production, the roughness of the working surface of the mold is very good, so that the green compact can be released from the mold after molding, so the surface roughness of the gear green compact, especially the surface roughness of the gear teeth is very high, this excellent The high surface roughness can reduce the wear and noise of the gear to an extremely low level.

    The above is the content explained by the PM powder pressing manufacturer. If you want to know more about PM powder pressing and powder metallurgy, you are welcome to contact us.