Broken tooth and spindle wear repair process for single-tooth roller of crusher

Abstract

The invention discloses a broken tooth and spindle wear repair process for a single-tooth roller of a crusher. The process comprises the following steps: S1, cutting two sides of the broken tooth or aspindle wear part by oxygen, wherein the cutting depth is 20 mm higher than a wear surface, and cutting a damaged surface into a groove, the section of which is U-shaped, wherein the bottom surface of the groove is arc-shaped; S2, polishing the groove by a grinding machine till a bright and clean surface of a metal is exposed to the inner wall and the bottom surface; S3, carrying out online cladding on the groove by using a laser cladding welding machine; and S4, grinding and polishing a cladding layer. By carrying out online repair on the wear part by adopting the laser cladding welding machine, an original manual welding operating mode is improved, the labor intensity of a welding worker is reduced, and the welding efficiency and the utilization ratio of materials are improved and increased. In addition, the laser cladding welding machine can be adjusted and prepared intelligently, and generation of interlaminar oxides during welding can be avoided by means of a stable welding pointspot power principle of the laser cladding welding machine, so that the cladding welding precision is improved favorably.

Description

technical field [0001] The invention relates to a method for repairing broken teeth of a single-toothed roller of a crusher and wear of a main shaft. Background technique [0002] At present, the broken teeth of the single-toothed roller of the crusher and the wear and tear of the main shaft cannot meet the repair needs in terms of process, technology, and materials. It is difficult and valuable, which directly affects production. There is no repair method at home and abroad, so it has to be replaced directly. The loss is huge. It also affects production. [0003] The main problem is: the strength level of broken teeth and deposited metal, materials, processes, and technologies is difficult to control, which can easily cause welding cracks of broken teeth, cracks between the weld seam and the edge of the substrate, and the strength of the joint surface of the deposited area is difficult to control. A single-toothed roller costs at least 10 million yuan, and it takes 15 da...

AI Technical Summary

Problems solved by technology

[0002] At present, the broken teeth of the single-toothed roller of the crusher and the wear and tear of the main shaft cannot meet the repair needs in terms of process, technology, and materials. It is difficult and valuable, which directly affects production. There is no repair method at home and abroad, so it has to be replaced directly. The loss is huge. Also affects production

[0003] The main problem is: the strength level of broken teeth and deposited metal, materials, processes, and technologies is difficult to control, which can easily cause welding cracks of broken teeth, cracks between the weld seam and the edge of the substrate, and the strength of the joint surface of the deposited area is difficult to control. A single-toothed roller is at least 10 million yuan, and the maintenance work takes 15 days, and the direct economic loss reaches 3 million yuan per day. It can be seen that the cost is huge. How to solve this problem is the main subject of the process, technology and materials