The material selection

The worm gear reducer is not well prepared in processing technology and material, it can cause the transmission failure. Worm gear speed reducer is also the problem that the gear reducer may encounter when making parts, such as the hardness of the hard surface speed reducer, and the unreasonable design of the screw lift bearing design.
Due to large worm drive meshing friction, worm gear hob is difficult to accurately backoff size and shape error. As a result of that the worm gear tooth surface is very difficult to work out and the worm tooth surface match completely to meet the requirements of the theory of conjugate condition. Therefore, the worm and worm gear tooth should have both wear resistance and good running performance.
Worm materials generally made of alloy steel or high quality carbon steel, and worm gear tooth surface by carburizing, quenching and nitriding heat treatment and high hardness, its hardness is between 35-55 HRC in general, but also has more than 60 HRC.
The materials used in worm gear ring are the most ideal for tin bronze, and the mechanical properties of centrifugal casting are the best in the process, followed by casting of metal mould, the most of which is not cast in sand mold.