Laser and arc compound welding method

A hybrid welding and arc technology, used in laser welding equipment, welding equipment, metal processing equipment, etc., can solve the problems of scattering, insufficient thermionic emission, absorption of beams, etc., to increase penetration, improve arc stability, and improve the surface. molding effect

Inactive Publication Date: 2019-07-05
苏州欧米宁自动化科技有限公司
View PDF1 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the deficiency of the existing laser-AC arc hybrid heat source welding method in high-speed welding, the present invention proposes a pulse laser and AC arc hybrid welding method, which solves the problem of the existing laser-arc hybrid welding technology in high-speed welding. A series of problems caused by the insufficient local thermionic emission of the arc and the absorption of laser energy and beam scattering by the arc plasma

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 and arc compound welding method
  • Laser and arc compound welding method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0020] like figure 1 Shown, a kind of laser and electric arc hybrid welding method of the present invention, described method comprises the steps:

[0021] (1) Activate pulsed laser, synchronous pulse signal control;

[0022] (2) Activate the AC arc and use pulsed laser-AC arc hybrid welding;

[0023] (3) During the welding process, adjust the arc current to 40A-500A, the laser pulse peak power to 1-6KW, the base value power to 200W-1000W, the laser pulse frequency to 10-100Hz, and the distance between the laser impact point and the center of the arc molten pool The distance Dla is 1-6mm, and the distance h from the tip of the electrode to the workpiece is 1-5mm until the welding is completed.

[0024] figure 1 Among them, the positive half-wa...

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

No PUM Login to view more

Abstract

The invention discloses a laser and arc compound welding method which comprises the following steps: (1) activating pulse laser and controlling a synchronous pulse signal; (2) activating an alternating current arc, and carrying out pulse laser-alternating current arc compound welding; and (3) in a welding process, adjusting the arc current to 40-500 A, the laser pulse peak value power to 1-6 KW, the basic value power to 200-1000 W, the laser pulse frequency to 10-100 Hz, the distance Dla between a laser impact point to the center of an arc molten bath to 1-6 mm and the distance from the tip ofan electrode to a workpiece to 1-5 mm till welding is finished. By coordination control between the pulse laser and alternating current arc negative half-wave regions, the arc stability can be improved, the surface forming of a welding region can be improved, and depth of fusion is increased by 1-2 times; by enhancing discharge in the alternating current arc negative half wave region by pulse laser, influence of processing parameters and environmental factors to welding stability can be reduced while the arc stability in a high speed condition is improved.

Description

technical field [0001] The invention relates to the technical field of material processing engineering, in particular to a laser and arc hybrid welding method. Background technique [0002] At present, in the field of research and application of laser-arc hybrid welding, the combination of continuous laser or pulsed laser and arc is basically used. During laser arc hybrid welding, the laser and the arc act on the common area. At this time, the laser and the arc interact, that is, there is a matching relationship in which the energy of the two strengthens and weakens each other. Generally speaking, the laser has a stable effect on the arc, but when the laser and the AC arc are combined, when the welding speed is high, although the interaction between the laser and the arc can stabilize the arc, there will still be insufficient local thermal electron emission, and the arc will produce Drift, expansion phenomenon. People hope to improve the stability of the high-speed welding...

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): B23K26/348
CPCB23K26/348
Inventor 张兆栋
Owner 苏州欧米宁自动化科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap