Repair method of coal cutter planet carrier based on laser cladding welding

A technology of laser cladding and repair method, which is applied in laser welding equipment, welding equipment, coating, etc., can solve the problems of out-of-tolerance size of built-in parts, poor working conditions, and high use intensity, etc., and achieve low repair cost, Easy to operate and avoid secondary damage

Inactive Publication Date: 2019-11-15
XIAN COAL MINING MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The working conditions of the shearer are poor, the use intensity is high, and the damage forms are diverse. The external parts of the shearer are mostly worn, corroded, deformed, and broken, and the internal parts are mostly out of tolerance. Heavy loads will cause cracks in the planetary frame of the shearer. For the maintenance of the shearer, a combination of multiple repair schemes is required. For the size of the built-in parts that are out of tolerance, the traditional repair methods mostly use argon arc welding, brush plating, Thermal spraying, etc. For the wear, corrosion, defor

Method used

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  • Repair method of coal cutter planet carrier based on laser cladding welding
  • Repair method of coal cutter planet carrier based on laser cladding welding
  • Repair method of coal cutter planet carrier based on laser cladding welding

Examples

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Effect test

Embodiment 1

[0048] Such as Figure 1 to Figure 4 A method for repairing the planetary frame of a shearer based on laser cladding welding is shown, the method includes the following steps:

[0049] Step 1. Pre-weld treatment of laser cladding welding, specifically including the following steps:

[0050] Step 101, cleaning the inner and outer surfaces of the planet carrier;

[0051] In this embodiment, the process of cleaning the inner and outer surfaces of the planetary carrier in step 101 includes: first, cleaning the dirt on the inner and outer surfaces of the planetary carrier laser cladding head 1; secondly, cleaning the planetary carrier laser with gasoline or cleaning agent For the inner and outer surfaces of the cladding head 1, after drying the planet carrier laser cladding head 1, use a rust remover to remove the rust on the inner and outer surfaces of the planet carrier laser cladding head 1; finally, use compressed air to complete the cleaning Dry and clean the inner and outer...

Embodiment 2

[0093] The difference from Embodiment 1 is that in this embodiment, the difference between the outer diameter of the cylindrical segment connecting shaft 1-1 after the first outer circle machining and the outer diameter of the cylindrical segment connecting shaft 1-1 before wear The value is 3mm.

[0094] In this embodiment, during the process of laser cladding welding on the outer circular surface of the connecting shaft of the cylindrical section, the overlap width between two adjacent cladding layers is 0.6 mm, and the single-layer cladding layer The value range of the thickness is 0.5mm; when the outer diameter of the annular repair cladding layer 4-1 is greater than the outer diameter of the base material of the cylindrical section connecting shaft 1-1, and the annular repair cladding layer When the difference between the outer diameter of the layer 4-1 and the outer diameter of the base material of the cylindrical connecting shaft 1-1 is 1.5 mm, the laser cladding head 3...

Embodiment 3

[0105] The difference from Embodiment 1 is that in this embodiment, the difference between the outer diameter of the cylindrical segment connecting shaft 1-1 after the first outer circle machining and the outer diameter of the cylindrical segment connecting shaft 1-1 before wear The value is 4mm.

[0106] In this embodiment, in the process of laser cladding welding on the outer circular surface of the connecting shaft of the cylindrical section, the overlapping width between two adjacent cladding layers is 0.8 mm, and the single-layer cladding layer The value range of the thickness is 0.6mm; when the outer diameter of the annular repair cladding layer 4-1 is greater than the outer diameter of the base material of the cylindrical section connecting shaft 1-1, and the annular repair cladding layer When the difference between the outer diameter of the layer 4-1 and the outer diameter of the base material of the cylindrical connecting shaft 1-1 is 2mm, the laser cladding head 3-4 ...

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Abstract

The invention discloses a repair method of a coal cutter planet carrier based on laser cladding welding. The method comprises the steps of firstly, pre-welding treatment of laser cladding welding, secondly, laser cladding welding of the outer circle face of a cylinder segment connecting shaft, thirdly, laser cladding welding of concave pits located at the tail ends of multiple spline teeth and fourthly, post-welding treatment of laser cladding welding. The process of the repair method is simple, in the process of repairing the planet carrier through laser cladding welding, the planet carrier can be prevented from generating heat deformation and heat fatigue damage, and meanwhile the bonding strength of a cladding layer and a matrix material is high; and secondary damage can be prevented from being generated to an outer spline of the planet carrier, the repair precision is high, the repair cost is low, and application and popularization are convenient.

Description

technical field [0001] The invention belongs to the technical field of laser cladding welding, and in particular relates to a method for repairing a planetary frame of a coal mining machine based on laser cladding welding. Background technique [0002] The working conditions of the shearer are poor, the use intensity is high, and the damage forms are diverse. The external parts of the shearer are mostly worn, corroded, deformed, and broken, and the internal parts are mostly out of tolerance. Heavy loads will cause cracks in the planetary frame of the shearer. For the maintenance of the shearer, a combination of multiple repair schemes is required. For the size of the built-in parts that are out of tolerance, the traditional repair methods mostly use argon arc welding, brush plating, Thermal spraying, etc. For the wear, corrosion, deformation and fracture of external parts, the traditional repair method mostly adopts the method of gas shielded welding and surfacing welding, e...

Claims

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Application Information

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IPC IPC(8): C23C24/10C22C38/42C22C38/44C22C38/04C22C38/02C22C38/06B23K26/34B23K26/342
CPCB23K26/34B23K26/342C22C38/02C22C38/04C22C38/06C22C38/42C22C38/44C23C24/106
Inventor 史仁贵杨方超谢杰王先龙王晟东薛强
Owner XIAN COAL MINING MACHINERY
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