Method for performing laser cladding on inclined basal body
A laser cladding and matrix technology, applied in the direction of metal material coating process, coating, etc., can solve problems such as interference between laser head and parts, and achieve the effect of improving service life, saving costs, and avoiding interference.
Active Publication Date: 2017-05-17
DALIAN UNIV OF TECH
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Problems solved by technology
[0003] In order to overcome the defects of the prior art, the present invention invents a method of laser cladding on an inclined substrate, which solves the problem of interference between the laser head and parts caused by conventional laser cladding, especially for gears with small modules or For parts with complex shapes, conventional laser cladding will cause interference between the laser head and the part
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[0026] The implementation of the present invention will be described in detail below in conjunction with the technical scheme and accompanying drawings.
[0027] figure 1 It is a schematic diagram of the laser cladding of the inclined substrate of the present invention. The gear used in this example is the gear of the speed increaser, and the worn tooth surface is repaired by laser cladding. The number of gear teeth is 41, and the module is 25. The gear material is 42Cr, the powder material is 316L, the powder particle size is 45μm-90μm, the required thickness for the repair of the worn tooth surface is 0.3mm, and the required width for the repair of the worn tooth surface is 38.5mm. The specific steps of the method are as follows:
[0028] The first step is to calculate the inclination angle θ of the surface to be repaired.
[0029] Measured ∠BAC=63°, l BD =15.4mm, l OB =27.3mm, then It is calculated that θ=90°-(∠BOC-∠BOD)=61°. Therefore, the angle θ at which the surf...
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Abstract
The invention discloses a method for performing laser cladding on an inclined basal body, and belongs to the technical field of laser cladding re-manufacturing, and relates to the method for performing laser cladding on the inclined basal body. The method comprises the following steps of: calculating to obtain a to-be-inclined angle of a to-be-repaired surface, and obtaining optimal parameters by doing a plurality of groups of different parameter combination experiments; keeping a laser head perpendicular, and inclining the to-be-repaired surface by the to-be-inclined angle; and performing a plurality of groups of single-run single-layer laser cladding experiments on the basal body which is inclined by certain angle by selecting different laser powers, scanning speeds and power feeding amount to determine optimal laser cladding parameters, and repairing a part by the parameters. According to the method disclosed by the invention, for a small-modulus gear or the part with a complex shape, the to-be-repaired surface is inclined by certain angle, so that the problem that a laser head and the part generate interference as a result of laser cladding is solved, and therefore, a cladding process can be normally and smoothly performed, the service life of the part is prolonged, and cost is reduced.
Description
technical field [0001] The invention belongs to the technical field of laser cladding and remanufacturing, and relates to a method for laser cladding on an inclined substrate. Background technique [0002] Large parts or complex parts are usually scrapped after local wear and tear, resulting in great waste. Laser cladding repair can repair the worn part to make it reach and exceed the original performance, and greatly reduce the cost and reduce the maintenance time. Yang Yi et al.'s paper "Laser Cladding Repair Process and Defect Analysis on Tooth Surface" [J]. Equipment Manufacturing Technology, 2014(8): 68-70. Using laser cladding method to repair the gear shaft of a marine reduction gearbox The worn tooth flanks were successfully repaired. The advantage is that a repair layer with smooth surface, low dilution rate, good metallurgical bonding and high hardness is obtained. The disadvantage is that only large modulus gear tooth surfaces can be repaired. In conventional ...
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IPC IPC(8): C23C24/10
CPCC23C24/10
Inventor 李涛李海波徐海岩王鑫林刘淑杰刘伟嵬张洪潮
Owner DALIAN UNIV OF TECH