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Gear laser cladding repair process beneficial to improve hardness and wear resistance

A laser repair and laser cladding technology, which is applied in the coating process and coating of metal materials, can solve the problems of high laser output power, high overall temperature of gears, high preheating temperature, etc., and achieve good structure uniformity and overlapping The effect of quantity optimization and high fusion rate

Active Publication Date: 2014-03-26
XINJIANG HUIXIANG LASER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is divided into three layers and uses powders of three different compositions for cladding, which is redundant and cumbersome, and its preheating temperature is high, and the laser output power is high, which will cause the overall temperature of the gear to be too high and cause thermal deformation.

Method used

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Embodiment Construction

[0023] The specific steps of the laser repair process of the gear of the present embodiment are as follows:

[0024] A. Treat the surface of the gear to be repaired, and conduct failure analysis on the gear.

[0025] Remove the dust, oil, rust, etc. on the gear; measure the size of each part of the gear, determine the failure part and its wear amount, and check whether the gear is deformed; remove the 0.5mm fatigue layer of the gear failure part by grinding, and clean it.

[0026] B. Preheat the gear as a whole, the overall preheating temperature is 100°C, and at the same time, carry out partial preheating on the part of the gear to be repaired, the partial preheating temperature is 200°C.

[0027] C. According to the failure analysis results of the gear, optimize the process parameters, and carry out laser cladding layer by layer. Laser cladding starts from the lowest point in the tooth groove. The thickness of each layer of cladding layer is 0.4mm, and the last layer of clad...

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Abstract

The invention relates to a gear laser repair process which comprises the following steps: A. treating the surface of a gear, and performing failure analysis on the gear; B, integrally preheating the gear at 80-120 DEG C, and locally preheating the to-be-repaired part of the gear at 180-220 DEG C at the same time; C, optimizing process parameters according to the failure analysis result of gear, performing layer-by-layer laser cladding, wherein the thickness of each cladding layer is less than or equal to 0.4 mm, the edge of the next cladding layer is extended outwards from the edge of the previous cladding layer by 4-6mm, and the used alloy powder comprises the following components in percentage by weight: no more than 0.5% of C, 38-52% of Cr, 1.5-2.5% of B, 0.5-1.5% of Si and the balance of Fe; and D, detecting. According to the gear laser repair process, the surface of the gear is subjected to laser cladding, so that the size meets the use requirements, and the hardness and wear resistance of the repaired gear exceed the original properties.

Description

[0001] This application is a sub-application application. The application number of the original application: 201210351302.4, application date: 2012-09-20, invented the creation of the name "The Laser Moltening Repair Process of the Gener". Technical field [0002] The invention involves a laser melting method, especially the laser melting repair method of a gear. Background technique [0003] The application of gears in various industries is extremely wide.Due to the working characteristics of the gear, while the center of which is required to ensure toughness, the tooth surface can meet the hardness requirements to meet the intensity requirements during use.Gear bite requirements are high and the intensity of operations work is high. Therefore, the first wear and peeling in the interlinity area of the tooth surface will cause the gear to be disabled.Laser melting refers to placing the selected coating material on the surface of the melting substrate on the surface of the meltin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10
Inventor 邓琦林刘少彬何建方马万花
Owner XINJIANG HUIXIANG LASER TECH
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