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Laser cladding composite powder and cladding method

A technology of laser cladding and composite powder, applied in coating, metal material coating process and other directions, can solve the problems of chromium-containing waste water and waste gas causing cancer, non-compliance with the development plan of green manufacturing of high-end equipment, harm to production workers, etc.

Active Publication Date: 2020-10-27
包头市宏正机械科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of this process is that it is easy to operate and the surface quality of the piston rod is high. However, the chromium-containing wastewater and waste gas are serious carcinogens, which are extremely harmful to production workers. trend

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A laser cladding composite powder, composed of the following components in weight percentage: chromium 23.8%, nickel 6.2%, manganese 1.8%, vanadium 0.3%, titanium 1.8%, silicon 0.25%, cerium 0.02%, phosphorus 0.62%, carbon 0.12%, the balance of iron and unavoidable impurities, the particle size of the laser cladding composite powder is 35 μm.

[0031] A laser cladding method for repairing the surface of a hydraulic cylinder by applying the above-mentioned laser cladding composite powder, comprising the following steps:

[0032] (1) Pre-treat the surface of the cladding base material of the hydraulic cylinder to clean the dust, oil or rust on the surface;

[0033] (2) Using the above-mentioned laser cladding mixed powder to carry out laser cladding treatment;

[0034] The laser used in the laser cladding is a semiconductor laser, the power of the semiconductor laser is 800W, and the spot size is 3×24mm;

[0035] The process parameters of the laser cladding are as follo...

Embodiment 2

[0037] A laser cladding composite powder, composed of the following components in weight percentage: chromium 26.4%, nickel 8.8%, manganese 2.3%, vanadium 0.5%, titanium 2.1%, silicon 0.4%, cerium 0.05%, phosphorus 0.73%, carbon 0.14%, the balance of iron and unavoidable impurities, the particle size of the laser cladding composite powder is 25 μm.

[0038] A laser cladding method for repairing the surface of a hydraulic cylinder by applying the above-mentioned laser cladding composite powder, comprising the following steps:

[0039] (1) Pre-treat the surface of the cladding base material of the hydraulic cylinder to clean the dust, oil or rust on the surface;

[0040] (2) Using the above-mentioned laser cladding mixed powder to carry out laser cladding treatment;

[0041] The laser used in the laser cladding is a semiconductor laser, the power of the semiconductor laser is 1000W, and the spot size is 3×24mm;

[0042] The process parameters of the laser cladding are as follo...

Embodiment 3

[0044]A laser cladding composite powder, composed of the following components in weight percentage: chromium 24.0%, nickel 6.4%, manganese 1.9%, vanadium 0.35%, titanium 1.9%, silicon 0.3%, cerium 0.025%, phosphorus 0.64%, carbon 0.123%, the balance iron and unavoidable impurities, the particle size of the laser cladding composite powder is 30 μm.

[0045] A laser cladding method for repairing the surface of a hydraulic cylinder by applying the above-mentioned laser cladding composite powder, comprising the following steps:

[0046] (1) Pre-treat the surface of the cladding base material of the hydraulic cylinder to clean the dust, oil or rust on the surface;

[0047] (2) Using the above-mentioned laser cladding mixed powder to carry out laser cladding treatment;

[0048] The laser used in the laser cladding is a semiconductor laser, the power of the semiconductor laser is 980W, and the spot size is 3×24mm;

[0049] The process parameters of the laser cladding are as follows...

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PUM

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Abstract

The invention discloses laser cladding composite powder and a cladding method. The laser cladding composite powder comprises, by weight, chromium 23.8-26.4%, nickel 6.2-8.8%, manganese 1.8-2.3%, vanadium 0.3-0.5%, titanium 1.8-2.1%, silicon 0.25-0.4%, cerium 0.02-0.05%, phosphorus 0.62-0.73%, carbon 0.12-0.14% and the balance ferrum and inevitable impurities. The laser cladding method is applied to repairing the surface of a hydraulic cylinder with the laser cladding composite powder. The laser cladding composite powder has a good cladding effect to make a repaired cladding layer have high hardness and high corrosion resistance and wear resistance and also has a good effect of repairing the surface of the hydraulic cylinder.

Description

technical field [0001] The invention belongs to the technical field of material surface strengthening, and in particular relates to a laser cladding composite powder and a cladding method for hydraulic oil cylinder surface repair. Background technique [0002] Large-scale equipment basically relies entirely on the working mechanism including the hydraulic cylinder to complete functions such as walking, turning, propulsion, and support. Frequent use in various working conditions will cause cracks in the piston rod of the hydraulic cylinder, or wear and tear on the chrome layer on the surface of the piston rod. And cavitation, making the hydraulic cylinder function invalid, seriously affecting the normal use of equipment. To solve these problems, the traditional piston rod repair process is to peel off the chromium layer of the piston rod first, then re-plate the surface with hard chrome and polish it, or nickel-plate it to resist corrosion. The advantage of this process is t...

Claims

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Application Information

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IPC IPC(8): C23C24/10C22C38/58C22C38/46C22C38/50C22C38/02
CPCC22C38/002C22C38/005C22C38/02C22C38/46C22C38/50C22C38/58C23C24/103
Inventor 任志勇王智华
Owner 包头市宏正机械科技有限公司