The worm material is mainly carbon steel or alloy steel, which should have special properties such as high strength, high toughness, wear resistance, corrosion resistance, low temperature resistance, high temperature resistance and non magnetism.
Worm gears are usually cast tin bronze and aluminum iron bronze; Low speed and unimportant transmission can be made of cast iron.
Cast iron bronze: good friction, good adhesion resistance, expensive price and slightly lower strength.
Cast aluminum iron bronze: the friction reducing and anti gluing properties are slightly poor, but the strength is high and the price is high.
Cast iron: gray; Spheroidal graphite. Aging treatment shall be carried out to prevent deformation.
