The bucket tooth on the sides of the bucket are generally abrase faster than the bucket tooth on the middle of the bucket. When the bucket tooth on the sides are much shorter than the middle bucket tooth, the swap positions between the sides and the middle can be used continuously. It can reduce the number of repairs and indirectly increase the service life of the tooth. Before the tooth wear reaches the limit of use, it is good to weld the tooth in time. In addition, the tooth of different materials are suitable for rock of different hardness. There is no tooth made of one material suitable for any working environment, so it is necessary to select the tooth according to different working media.

Excavator tooth with wear-resistant surfacing repair have high wear resistance, and their service life can be increased by 3 to 4 times, and the cost of surfacing is much less than the cost of replacing new tooth. And an old tooth can be repaired and used many times, that is, after the wear-resistant surfacing layer is worn away, the surfacing repair can be performed again until the whole is scrapped, which greatly saves the production cost. In addition, when the newly-changed tooth works in a harsh working environment and is subjected to a particularly strong impact load, it can also be welded on the surface of the new tooth to increase its wear resistance and increase the service life. Since surface surfacing reduces the requirements on the tooth base material, thereby reducing the material cost, and bringing high economic benefits to both the manufacturer and the user, it is worth promoting.