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Ultrasonic assisted laser welding device and method for dissimilar metal materials

A dissimilar metal and laser welding technology, which is applied in laser welding equipment, welding equipment, metal processing equipment, etc., can solve problems such as difficult to guarantee sealing performance, achieve the effect of improving sealing performance, increasing the first-time success rate, and reducing production costs

Active Publication Date: 2017-07-04
CHINA AEROSPACE TIMES ELECTRONICS CORP
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

Compared with other welding methods, laser welding has the advantages of high energy density, concentrated heat, easy control of heat source, large depth-to-width ratio of weld seam, narrow heat-affected zone and small welding deformation. It is one of the joining methods for dissimilar metal welding. , but for dissimilar metal connections with high bonding strength and high airtight requirements, such as non-magnetic metal white copper and magnetic metal electrical pure iron, the airtightness is often difficult to guarantee through simple laser welding

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  • Ultrasonic assisted laser welding device and method for dissimilar metal materials
  • Ultrasonic assisted laser welding device and method for dissimilar metal materials
  • Ultrasonic assisted laser welding device and method for dissimilar metal materials

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Embodiment

[0040] The following is the ultrasonic-assisted laser welding of the electrical pure iron and cupronickel specimens in Table 1, a total of 8 sets, of which 4 sets are added with ultrasonic excitation, and 4 sets are not added with ultrasonic excitation. The implementation process is described in detail, and the ultrasonic-assisted Comparative analysis of the leakage rate effect after welding of laser welding and pure laser welding test pieces:

[0041] Table 1: Main parameters of the weldment

[0042]

[0043] The implementation process of ultrasonic assisted laser welding is as follows:

[0044] (1) Install the dissimilar metal weldment between the first top tool and the second top tool, adjust the axial displacement of the second top tool, and clamp the dissimilar metal weldment;

[0045] (2) Adjust the base so that the laser head is aligned with the highest point of the welding seam of the dissimilar metal weldment, place it on the laser welding work platform, and adjust ...

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Abstract

The invention discloses an ultrasonic assisted laser welding device and method for dissimilar metal materials. As an ultrasonic vibration exciter is introduced to a laser-welded rotary clamping tool, in the welding process, the ultrasonic vibration excitation with the frequency being 15k-2MHz applied to a dissimilar metal weldment is realized. The one-time success rate of the dissimilar metal weldment is increased, the production cost is reduced, and the production efficiency is improved. The ultrasonic assisted laser welding method improves the sealing performance of a test piece and can achieve the level of leakage rate less than 1*10-9Pa m3 / S.

Description

technical field [0001] The invention relates to an ultrasonic-assisted laser welding device and method for dissimilar metal materials, which are used to improve the performance of metal laser welding. Background technique [0002] Laser welding of dissimilar metals has problems such as mutual solubility, melting point, and linear expansion coefficient, and is prone to cracks and brittle intermetallic compounds. Compared with other welding methods, laser welding has the advantages of high energy density, concentrated heat, easy control of heat source, large depth-to-width ratio of weld seam, narrow heat-affected zone and small welding deformation. It is one of the joining methods for dissimilar metal welding. , but for the connection of dissimilar metals with high bonding strength and high airtight requirements, such as non-magnetic metal white copper and magnetic conductive metal electrical pure iron, the airtightness is often difficult to guarantee through simple laser weld...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/21B23K26/70B23K26/323
CPCB23K26/21B23K26/323B23K26/70
Inventor 孙超杨斌郝长岭罗辉冯萃峰
Owner CHINA AEROSPACE TIMES ELECTRONICS CORP
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