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Laser cladding repairing material for road simulation testing machine rotating hub and remanufacturing method

A technology of laser cladding and repairing materials, applied in the direction of metal material coating process, coating, etc., can solve the problems of large thermal deformation and scrapping of the rotating hub, and achieve the effect of improving service life, improving service life and high hardness

Inactive Publication Date: 2020-07-28
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a laser cladding remanufacturing method for the rotating hub of a road simulation testing machine. Using the laser cladding repair material for the rotating hub of the testing machine provided by the invention can easily realize the remanufacturing of the rotating hub of the testing machine. The remanufacturing method of the rotating hub of the testing machine solves the problem that existing technologies such as submerged arc welding, plasma surfacing welding, spray welding, etc. easily cause the repaired rotating hub to be scrapped due to large thermal deformation. The remanufacturing method improves the service life of the remanufactured hub, and the actual service life is more than three times that of the new hub

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] First prepare the laser cladding repair material for the hub of the road simulation test machine, in terms of mass percentage, including the following components: C0.03%, Cr17%, Ni12%, Si1.26%, Mo2.3%, CaF1.3% , the balance is Fe, and the particle size of the prepared laser cladding repair material is 135-325 mesh; the outer surface of the test machine hub after wearing is turned, and the thickness of unilateral turning is 2.0mm; the turning surface is cleaned to obtain The outer surface of the pre-treated test machine hub; laser cladding, the laser spot is a rectangular spot of 2×14mm, the laser scanning power is 3800W, and the gravity powder feeding method is adopted. The laser scanning speed is 500mm / min. The rate is 30%, and it is prepared by multi-layer cladding. The thickness of the obtained cladding layer is 3.0mm; the cladding layer is subjected to non-destructive testing; the cladding layer is ground, and the amount of grinding on one side is 1mm; The final hub...

Embodiment 2

[0035] First prepare the laser cladding repair material for the hub of the road simulation test machine, in terms of mass percentage, including the following components: C0.05%, Cr19%, Ni13%, Si1.30%, Mo2.7%, CaF2.5% , the balance is Fe, and the particle size of the prepared laser cladding repair material is 135-325 mesh; the outer surface of the test machine hub after wearing is turned, and the thickness of unilateral turning is 3.0mm; the turning surface is cleaned to obtain The outer surface of the pre-treated test machine hub; laser cladding, the laser spot is a rectangular spot of 2×14mm, the laser scanning power is 4000W, and the gravity powder feeding method is adopted. The laser scanning speed is 650mm / min. The rate is 50%, and it is prepared by multi-layer cladding. The thickness of the obtained cladding layer is 4.0mm; the cladding layer is subjected to non-destructive testing; the cladding layer is ground, and the amount of grinding on one side is 1mm; The final hub...

Embodiment 3

[0038] First prepare the laser cladding repair material for the hub of the road simulation test machine, in terms of mass percentage, including the following components: C0.03%, Cr17%, Ni13%, Si1.30%, Mo2.7%, CaF2.5% , the balance is Fe, and the particle size of the prepared laser cladding repair material is 135-325 mesh; the outer surface of the test machine hub after wearing is turned, and the thickness of unilateral turning is 3.0mm; the turning surface is cleaned to obtain The outer surface of the pretreated test machine hub; laser cladding, the laser spot is a rectangular spot of 2×14mm, the laser scanning power is 4000W, and the gravity powder feeding method is adopted. The laser scanning speed is 600mm / min. The rate is 50%, and it is prepared by multi-layer cladding. The thickness of the obtained cladding layer is 4.0mm; the cladding layer is subjected to non-destructive testing; the cladding layer is ground, and the amount of grinding on one side is 1mm; The final hub is...

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Abstract

The invention provides a laser cladding repairing material for a road simulation testing machine rotating hub and a remanufacturing method, and belongs to the technical field of metal surface treatment. The laser cladding repairing material for the road simulation testing machine rotating hub comprises, by mass percent, 0.03%-0.05% of C, 17%-19% of Cr, 12%-13% of Ni, 1.26%-1.30% of Si, 2.3%-2.7% of Mo, 1.3%-2.5% of CaF and the balance Fe. The laser cladding repairing material for the road simulation testing machine rotating hub is reasonable in ingredient content, a high-quality laser claddinglayer can be obtained in the testing machine rotating hub remanufacturing process, the remanufactured testing machine rotating hub has high hardness, wear resistance and wear reducing performance, and the service life of the remanufactured testing machine rotating hub is greatly prolonged.

Description

technical field [0001] The invention relates to the technical field of metal surface treatment, in particular to a laser cladding remanufacturing method for a rotating hub of a road simulation testing machine. Background technique [0002] The high-speed and durable tire testing machine is one of the key equipment for tire testing. At present, road simulation testing machines are all automatically controlled by computer technology and monitored by industrial computer to keep the load of tires within the set range. The loading and unloading of tires are all driven by oil cylinders and realized by linear guide rails. However, after a large number of tire tests, the rotating hub of the testing machine also suffered serious wear and tear. Among them, annular grooves appeared on the part of the rotating hub surface in contact with the tire for a long time, which seriously affected the accuracy of subsequent tests. The overall replacement of the rotating hub is expensive and does...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/44C22C38/02C23C24/10
CPCC22C38/002C22C38/02C22C38/44C23C24/103
Inventor 付宇明张钰付晨郑立娟
Owner YANSHAN UNIV