Method of manufacturing clad layer on basis of vibration-assistant ultrahigh-speed laser cladding technology

A laser cladding, ultra-high-speed technology, applied in the direction of coating, metal material coating process, etc.

Inactive Publication Date: 2019-06-21
西安中科光机投资控股有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Vibration technology has been researched and applied in the welding process or post-welding treatment. Vibration technology can be introduced into laser cladding. Usually, vibration technology can be applied in the process of laser cladding and after laser cladding on the cladding layer. Perform vibration to remove residual stress. At present, there are few researches and applications on online vibration-assisted laser cladding, especially on shaft workpieces.

Method used

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  • Method of manufacturing clad layer on basis of vibration-assistant ultrahigh-speed laser cladding technology
  • Method of manufacturing clad layer on basis of vibration-assistant ultrahigh-speed laser cladding technology
  • Method of manufacturing clad layer on basis of vibration-assistant ultrahigh-speed laser cladding technology

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Embodiment 1

[0035] see figure 1 , during the ultra-high-speed laser cladding process for 27SiMn steel shaft workpieces, use ultrasonic impact equipment to mechanically impact the cladding layer online, the specific steps are as follows:

[0036] Step 1, put the shaft workpiece 4 into the chuck 3, move the top 6 to tighten the workpiece 4 and clamp the chuck 3; use an angle grinder to remove stains and rust on the surface of the workpiece, and then wipe the surface of the workpiece 4 with alcohol;

[0037] Step 2, select JG-8 iron-based self-fluxing powder, the particle size range of the cladding powder is 20μm~53μm, the sphericity is ≥90%, the preheating temperature is 120°C, the holding time is 1h, and then the powder is sieved with a 200-mesh sieve before loading into the powder feeder;

[0038] Step 3. Adjust the parameters of the ultra-high-speed laser cladding equipment. The laser cladding power is 3KW, and the spot size is Φ2mm; the working distance of the spot from the cladding he...

Embodiment 2

[0046] see figure 2 , during the ultra-high-speed laser cladding process for plate workpieces, use ultrasonic impact equipment to mechanically impact the cladding layer online, the specific steps are as follows:

[0047] Step 1, fix the 45 steel plate workpiece 8 on the working platform 10 through the fixing fixture 9; use an angle grinder to remove stains and rust on the surface of the workpiece, and then wipe the surface of the workpiece 8 with alcohol;

[0048] Step 2: Select Ni30 self-fluxing powder, the particle size range of the cladding powder is 20μm~53μm, the sphericity is ≥90%, the preheating temperature is 120°C, the holding time is 1h, and then the powder is sieved with a 200-mesh sieve and loaded into the powder feeder middle;

[0049] Step 3. Adjust the parameters of the ultra-high-speed laser cladding equipment. The laser cladding power is 1KW-2KW, and the spot size is Φ1mm; the working distance of the spot from the cladding head to the workpiece is 14mm; The...

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Abstract

The invention discloses a method of manufacturing a clad layer on the basis of a vibration-assistant ultrahigh-speed laser cladding technology. The method specifically comprises the steps that a workpiece is fixed to a workbench, the surface of the workpiece is cleaned, ultrahigh-speed laser cladding powder is preheated, screened and then fed into a powder feeder, a laser spot and a powder focusing spot are adjusted to be located on the same straight line, coaxial powder feeding is adopted, powder feeding is adjusted, and then an ultrasonic high-frequency impact head is adjusted to make contact with the workpiece; and an ultrasonic high-frequency impact facility is started, an ultrahigh-speed laser cladding facility is started to conduct cladding operation on the workpiece, the impact headcan conduct violent reciprocating vibration through the high frequency of the ultrasonic high-frequency impact facility, and the purpose that the impact is immediately conducted on a coating which isjust subjected to the cladding operation can be achieved. The vibration is applied to the clad layer in the ultrahigh-speed laser cladding process, and therefore the effects that the residual stressof the clad layer is reduced, the crystal grain is refined, and the organization is uniform can be achieved, the crack sensitivity of the clad layer can be reduced, the metal solidification structurecan be improved, and the mechanical property can be improved.

Description

technical field [0001] The invention belongs to the technical field of cladding layer preparation, and in particular relates to a method for preparing a cladding layer based on a vibration-assisted ultra-high-speed laser cladding technology. Background technique [0002] For mining, metallurgy, petrochemical, mold, construction machinery and other industries, many large metal components have requirements for wear resistance, corrosion resistance and fatigue resistance on the surface. Compared with common treatment processes such as electroplating, thermal spraying and surfacing welding, laser cladding has With the advantages of small dilution, small deformation, metallurgical combination of coating and substrate, and cladding of various materials, laser cladding technology is widely used to restore size and surface modification. [0003] The traditional laser cladding technology has low spot energy density, cladding line speed is generally lower than 3m / min, low powder utili...

Claims

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Application Information

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IPC IPC(8): C23C24/10
Inventor 石浩代华斌石威金卫刚
Owner 西安中科光机投资控股有限公司
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