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A double-sided laser scanning welding method for a T-joint

A laser scanning and welding method technology, applied in laser welding equipment, welding equipment, metal processing equipment and other directions, can solve the problems of unstable droplet transfer, difficult wire filling, etc., and achieve convenient welding process, easy mechanical automation, and reduced precision. Demanding effects

Inactive Publication Date: 2017-03-22
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to solve the problems of difficult wire filling and unstable droplet transfer existing in the welding process of thick plates, and provides a double-sided laser scanning welding method for T-shaped joints

Method used

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  • A double-sided laser scanning welding method for a T-joint
  • A double-sided laser scanning welding method for a T-joint
  • A double-sided laser scanning welding method for a T-joint

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specific Embodiment approach 1

[0029] Specific embodiment one: A kind of T-joint double-sided laser scanning welding method of this embodiment is carried out according to the following steps:

[0030] 1. Determine the size K / H of the welding leg: determine the different welding leg size K / H according to the thickness of the stringer vertical plate and the skin plate and the actual demand of the weld seam. The said welding leg size K / H is 1 to 2.5 ;

[0031] 2. Process the stringer vertical plate: process the stringer vertical plate into an integrated structural plate composed of the upper straight plate and the bottom quadrangular prism; the cross section of the bottom quadrangular prism is isosceles trapezoidal, and the thickness of the stringer vertical plate is D 1Equal to the length of the upper base of the isosceles trapezoid where the quadrangular prism at the bottom is located; where the solder leg size K described in step 1 is equal to half the difference between the upper base length and the lower ...

specific Embodiment approach 2

[0036] Embodiment 2: This embodiment differs from Embodiment 1 in that: the solder fillet size K / H in step 1 is 1.5-2. Other steps and parameters are the same as in the first embodiment.

specific Embodiment approach 3

[0037] Embodiment 3: This embodiment is different from Embodiment 1 or Embodiment 2 in that: the scan width described in step 4 is 1 mm to 15 mm. Other steps and parameters are the same as those in Embodiment 1 or 2.

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Abstract

The invention provides a bilateral laser scanning and welding method of a T-shaped connector, belongs to the technical field of laser machining, particularly relates to a laser welding method of the T-shaped connector and aims to solve the problems that in the thick plate welding process, it is difficult to conduct wire filling, and molten drop transition is not stable. The bilateral laser scanning and welding method includes the steps that 1, the size K / H of a welding pin is determined; 2, a purlin vertical plate is machined; 3, mounting and positioning are conducted; 4, bilateral laser scanning and welding are conducted. By means of the method, high-frequency swing in different scanning width ranges is achieved through laser beams of a laser scanning system, the size of laser power required at different positions in the ranges can be accurately adjusted, approximate continuous adjustment of the size of the laser beam power is achieved, energy of laser beams can be reasonably distributed and utilized, adaptability of laser to T-shaped connectors of different sizes is improved, and the application field of the laser welding technology is broadened.

Description

technical field [0001] The invention belongs to the technical field of laser processing, and in particular relates to a laser welding method for a T-shaped joint. Background technique [0002] T-shaped joint is a joint in which the end surface of one weldment and the surface of another weldment form a right angle or approximately a right angle. This is a joint form second only to butt joints in use. A large number of T-shaped welds are required in the manufacture and production of lightweight structures such as automobiles and aircraft, as well as important equipment such as aerospace and nuclear energy. The connection methods include riveting, bonding and welding. Compared with riveting and bonding, welding has high production efficiency and is The most important method for various structural connections including T-joints, while riveting and bonding are still used for the connection of some materials and structures that are difficult to weld or cannot meet the requirements...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/062B23K26/26B23K26/60B23K26/082
CPCB23K26/26
Inventor 陶汪蒋振国陈彦宾檀财旺刘红兵李昊姜梦
Owner HARBIN INST OF TECH
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