Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

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

A technology of wear repair and breaker, which is applied in the direction of metal material coating process, coating, grain treatment, etc. It can solve the problems of difficulty in controlling the strength of the joint surface, meeting the repair needs, and difficulty, so as to improve welding efficiency and material utilization The effect of improving efficiency, improving cladding welding accuracy and reducing labor intensity

Inactive Publication Date: 2019-08-23
湖北开明高新科技有限公司
View PDF7 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0025] 1) Use oxygen cutting to cut at 30mm on both sides of the broken tooth or the worn part of the main shaft. The cutting depth exceeds the depth of the worn surface by 20mm, and the damaged surface is cut into a "U"-shaped groove with a curved bottom surface;

[0026] 2) After cutting, use a grinder to grind until the inner wall and bottom surface of the breach expose the smooth surface of the metal, so as to eliminate the residual high-melting ferric oxide after cutting, which is convenient for laser welding and bonding;

[0027] 3) Using a laser cladding welding machine to laser clap the pearlitic alloy powder material and the nickel-based solder of the acidic coating composition to form a bonding layer on the inner wall and bottom of the breach;

[0028] Binding layer composition (mass percentage):

[0029] C Cr B Si P <0.5 12 0.5-2.0 2.4-4.5 margin

[0030] 4) Using a laser cladding welding machine, the martensitic alloy powder material, the...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

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...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10C22C19/03C22C28/00C22C38/02C22C38/34C22C38/44C22C38/54B02C4/28
CPCB02C4/28C22C19/03C22C28/00C22C38/02C22C38/34C22C38/44C22C38/54C23C24/103
Inventor 张开明周从滨王宏周治平刘志群李艳辉
Owner 湖北开明高新科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products