Unlock instant, AI-driven research and patent intelligence for your innovation.

Laser-arc hybrid welding method

A hybrid welding and laser arc technology, used in laser welding equipment, welding equipment, metal processing equipment, etc., can solve problems such as excessive height, poor root forming, and lack of fusion of base materials, and achieve high efficiency and efficiency. Effect

Inactive Publication Date: 2018-05-25
张宇
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing single-pass laser arc hybrid welding method has the following disadvantages: 1) Groove opening is required; 2) Incomplete fusion with the base metal often occurs at the root and middle and lower parts of the weld bead; 3) The root is poorly formed and often has unwelded Full, excessive reinforcement, weld toe cracks, etc.
[0005] The above problems restrict industrial production and application

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Laser-arc hybrid welding method
  • Laser-arc hybrid welding method
  • Laser-arc hybrid welding method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-2

[0051] The thickness of the steel plate is 20mm, and the welding wire with a diameter of 1.6mm is used. The broken welding wire has a diameter of 1.6mm and a length of 1.4mm.

[0052] The arc is in front of the laser beam, and the spacing on the welding plane is δ=4mm,

[0053] The welding test was carried out, and the process parameters are shown in Table 1.

[0054] The quality of welded joints is shown in Table 2.

Embodiment 3-4

[0056]The thickness of the steel plate is 25mm, and the welding wire with a diameter of 1.6mm is used. The broken welding wire has a diameter of 1.6mm and a length of 1.4mm.

[0057] The arc is in front of the laser beam, and the spacing on the welding plane is δ=4mm,

[0058] The welding test was carried out, and the process parameters are shown in Table 1.

[0059] The quality of welded joints is shown in Table 2.

Embodiment 5-6

[0061] The thickness of the steel plate is 16mm, and the welding wire with a diameter of 1.4mm is used. The diameter of the broken wire is 1.4mm, and the length is 1.4mm.

[0062] The distance between the arc and the laser beam on the welding plane is δ=3m,

[0063] The welding test was carried out, and the process parameters are shown in Table 1.

[0064] The quality of welded joints is shown in Table 2.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
lengthaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to a laser-arc hybrid welding method. The method includes the steps that no grooving is conducted, the distance between welding plates is 1-5mm, a ceramic liner is adopted on theback face, and soldering flux is pre-laid between the liner and the welding plates; broken welding wires are laid in the gap; and an arc is located in front of laser beams, the welding speed is 0.5-1.2m / min, the arc current is 280-360A, the arc voltage is 20-26V, laser power is 8-20kW, the light spot size of the laser beams is not smaller than 2mm<2>, single-pass through welding of the steel plates within the range of 25mm can be achieved, and double-faced molding is performed.

Description

technical field [0001] The invention relates to a laser arc composite welding method, which belongs to the field of welding technology, in particular to a composite welding method for single-pass welding and double-sided forming. Background technique [0002] The arc welding method is the most commonly used welding method for structural steel plate welding due to its low cost and mature technology. However, due to the low arc energy density, the penetration depth and welding speed of a single pass are greatly restricted, so a steel plate with a thickness of 25mm usually requires 4-8 layers of welding. [0003] Due to the high energy density of lasers, laser welding has high penetration capabilities. Laser welding, laser-arc hybrid welding and other methods have been applied. On the one hand, it can increase the penetration depth, on the other hand, it can increase the welding speed, thereby improving the welding efficiency. Laser arc hybrid welding combines the characteri...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/348B23K26/60
CPCB23K26/348B23K26/60
Inventor 张宇
Owner 张宇