A kind of laser welding method

A laser welding and laser beam technology, applied in laser welding equipment, welding equipment, metal processing equipment, etc., can solve the problems of limited application site and limited joint strength, and achieve improved efficiency, good surface quality of solder joints, and large solder joints. Effect

Active Publication Date: 2022-05-31
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Claims
  • Application Information

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Problems solved by technology

However, this method requires additional investment in fixed assets to establish a pre-processing workstation, and even if the pre-processing method is used, it can only weld short-line, C-shaped, S-shaped and other weld shapes, and the joint strength of this type of welding is limited. , so the application site is limited

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  • A kind of laser welding method
  • A kind of laser welding method
  • A kind of laser welding method

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Abstract

The invention discloses a laser welding method, in which laser energy of multiple laser beams is applied to the composite surface of overlapping materials for a period of time to melt the materials, form a weld seam after cooling and solidifying, and realize material connection; the position of the beams remains unchanged during the action Or move arbitrarily within a circle with a diameter of 15 mm to obtain large-scale solder joints. The shape of the weld seam formed includes circular, elliptical or arc-shaped contours; the number of beams varies from 2 to 10, and the shape of the laser beam spot includes dots, Ring, polygonal or short line shape, focusing spot diameter ranges from 0.05 mm to 10 mm, laser power ranges from 0.1 kW to 50 kW, beam energy is output in the form of continuous or pulse, and the action time ranges from 0.1 seconds to 10 seconds.

Description

A laser welding method technical field The present invention relates to a kind of laser welding method, belong to welding technical field. Background technique [0002] Lasers have been used as a heat source in material welding for more than 40 years and can The welding of metal materials and the welding of some non-metallic materials, such as plastics, ceramics, glass, etc. welding with laser The methods include pulsed laser spot welding, pulsed laser spot welding to form seam welding, continuous laser seam welding, continuous laser scanning through the galvanometer Spot welding, etc., using laser energy from a single beam laser, the welding efficiency and application range are limited to a certain extent. [0003] For example, in the automotive industry, lap welding of uncoated steel sheets or galvanized sheets is a common welding combination. The traditional welding method is resistance spot welding. Resistance spot welding is a double-sided welding method that re...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): B23K26/21B23K26/067B23K26/70
CPCB23K26/21B23K26/0673B23K26/702B23K26/70B23K26/067B23K26/22
Inventor杨上陆陶武
OwnerSHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI