Many reasons of bucket teeth wear failure are caused by unreasonable design of process structure, especially in the overall structure and parts structure. For example, the bucket teeth of 4m3 electric shovel are easily damaged in long-term excavation, and their service life is relatively low, which seriously affects the efficiency of construction. Therefore, in order to improve the anti-wear ability of bucket teeth, it is necessary to change their original shape. In terms of the overall structure, a long groove can be excavated at the lower part of the bucket teeth, and then metal can be placed at the appropriate position to increase the length of the bucket teeth. It can not only increase the effective amount of metal wear, but also change the force flow when ore contacts with parts, and effectively improve the degree of wear resistance. In the aspect of part structure, long groove can be changed into round hole, which can not only achieve the effect of anti-wear, but also improve the phenomenon of stress concentration. Reasonable design of bucket lip bucket teeth and bucket teeth angle, if the bucket teeth angle is too large, it will increase the bending impact stress, resulting in bucket teeth fracture. If the angle between the bucket teeth is too small, it will cause the relative motion between the bucket teeth and the grinding surface, which will lead to wear failure. Therefore, in the design, the excavator should be designed according to the region of operation, and its angle should be adjusted to the best, which can not only reduce the energy consumption of equipment, but also reduce the wear and tear of bucket teeth. A comprehensive design of wear lubrication and non-wear lubrication should be carried out, and structural improvements should be made for the mutual improvement of force and direction of force flow.
The improved bucket teeth have longer moment and flattened tip, which can reduce friction and pressure on the tip in unit area and fundamentally solve the problem of bucket teeth wear failure. It is difficult to avoid that large excavators in mines are vulnerable to wear in use, but designers can take appropriate measures to continuously improve the degree of wear, increase service life and improve operational efficiency. In order to improve its wear resistance, designers should proceed from the actual situation and make corresponding changes in its structure and materials, so as to improve its surface, if necessary, drought-resistant treatment. At the same time, the designer should select reasonable materials, do a good job of surface treatment, and continuously improve the anti-wear ability of bucket teeth of large excavators in mines.
Huangzuan Machinery established in 2008, is a specialized manufacturer of bucket teeth, bucket adaptor and side cutter which is used Caterpillar, Komatsu, Hyundai, Daewoo, Kobelco, Hensley, Liugong, Hitachi, XCMG, XGMA, Volvo, JCB .etc.
With production facilities covering an area of 18136 square meters and staff of 100, our annual processing capability equals approximately 12,000 metric tons. we currently have the technology of lost wax casting, precoated sand casting, resin sand casting, have the advanced instrument such as spectromaxx, Brinell hardness tester, universal testing machine, metalloscope.
