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Laser arc composite deposition method

A deposition method and laser arc technology, applied in laser welding equipment, welding equipment, metal processing equipment, etc., can solve problems such as restricting development and not being used.

Inactive Publication Date: 2018-12-07
张家港创博金属科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the part of the energy used to melt the substrate in the arc energy has not been utilized, which restricts its further development.

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The welding plate is 20mm thick low alloy steel Q345D.

[0034] The angle between the two torches is 80°, and the front end of the torch is inclined downward at 5°. The arc welding current is 320A, the voltage is 40V, the wire feeding speed of the positive electrode welding torch is 10m / min, the wire feeding speed of the negative electrode welding torch is 11m / min, and the difference between the two is 1.0m / min. The diameter of the welding wire is 1.2mm, the material is nickel-based alloy, and the shielding gas is Ar+5%CO 2 , the flow rate is 14L / min.

[0035] The width of the laser beam is 4mm, the length is 10mm, and the vibration frequency of the scanning mirror is 20HZ.

[0036] After the deposition process was completed, the quality inspection of the deposited layer was carried out, and the results are shown in Table 1.

Embodiment 2

[0038] The welding plate is 16mm thick low alloy steel Q345D.

[0039] The angle between the two torches is 90°, and the front end of the torch is inclined downward at 6°. The arc welding current is 360A, the voltage is 45V, the wire feeding speed of the positive electrode welding torch is 12m / min, the wire feeding speed of the negative electrode welding torch is 13m / min, and the difference between the two is 1.0m / min. The diameter of the welding wire is 1.6mm, and the material is nickel-based alloy.

[0040] The width of the laser beam is 6mm, the length is 15mm, and the vibration frequency of the scanning mirror is 15HZ.

[0041] After the deposition process was completed, the quality inspection of the deposited layer was carried out, and the results are shown in Table 1.

Embodiment 3

[0043] The welding plate is 16mm thick stainless steel 304L.

[0044]The angle between the two torches is 95°, and the front end of the torch is inclined downward at 8°. The arc welding current is 280A, the voltage is 36V, the wire feeding speed of the positive electrode welding torch is 9m / min, the wire feeding speed of the negative electrode welding torch is 10.5m / min, and the difference between the two is 1.5m / min. The diameter of the welding wire is 1.2mm, and the material is stainless steel 304L.

[0045] The width of the laser beam is 2.8mm, the length is 10mm, and the vibration frequency of the scanning mirror is 12HZ.

[0046] After the deposition process was completed, the quality inspection of the deposited layer was carried out, and the results are shown in Table 1.

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Abstract

The invention relates to a laser arc composite deposition method. According to the method, electric arcs are generated between welding wires, the welding wires are melted, the melting liquid drops ona substrate deposition layer, arc current is 200-360A, voltage is 28-45V, wire feeding speed of a positive electrode welding gun is 8-12m / min, the wire feeding speed of a negative electrode welding gun is 9-13m / min; and meanwhile, a laser beam is used for compensating a deposition weld bead, width of the laser beam is 2-5 times of a diameter of each welding wire, length of the laser beam is 5-10 times of the diameter of each welding wire, a scanning reflector is in sinusoidal movement, and the vibration frequency is 10-20HZ. The method has the advantages that the electric arc energy can be fully utilized, and the deposition efficiency is improved.

Description

technical field [0001] The invention relates to a laser arc composite deposition method, which belongs to the technical field of surface treatment and welding, and in particular relates to a new deposition method which adopts the direct generation of electric arc between welding wires and supplements the laser compensation heat source, which improves the deposition efficiency. Background technique [0002] There are many types of deposition or preparation technologies for metal coatings, with obvious advantages and disadvantages. From the point of view of heat source, there are electric arc, laser beam, plasma beam, electron beam, etc.; from the point of view of filling material, there are wire, powder, pre-coating, wire and powder added at the same time, etc. In terms of efficiency, the combination of arc heat source and wire is the most efficient way. In specific applications, multi-filament technology, simultaneous addition of filaments and powders, or even a combination...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/348
CPCB23K26/348
Inventor 潘鑫朱俊李小宝
Owner 张家港创博金属科技有限公司