Provide heat treatment to teeth pin are very important

　　The main role to provide the heat treatment to excavator tooth pin and rubber after the normal casting process is to improve the organization of the teeth pin, make sure its organization is very uniform, or the entirety property of excavator tooth pin and rubber would be reduced and the whole use life would be reduced too, so writer also attention the production manufacturers that after casting the excavator tooth pin and rubber into the confirm shape, they also need to provide the normalizing to casting working piece, the purpose is to improve the organization and property, then extend the total use life of the excavator tooth pin and rubber.

　　After provide the suitable heat treatment process for all of the casting working pieces, under the same working conditions, the total use life of the excavator tooth pin and rubber is two times than the excavator tooth pin products, which don’t produced by the heat treatment.