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Synchronous dual-light beam laser welding method of crossed joint

A welding method and cross-shaped technology, applied in laser welding equipment, welding equipment, metal processing equipment, etc., can solve the problems of poor welding seam quality and low welding efficiency, and achieve improved welding quality, improved welding efficiency, and enhanced stability. Effect

Active Publication Date: 2014-12-10
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the technical problems of low welding efficiency and poor weld quality in the single-beam laser welding process, and to provide a laser synchronous double-beam welding method for cross-shaped joints

Method used

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  • Synchronous dual-light beam laser welding method of crossed joint
  • Synchronous dual-light beam laser welding method of crossed joint
  • Synchronous dual-light beam laser welding method of crossed joint

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specific Embodiment approach 1

[0015] Specific implementation mode 1: In this implementation mode, the laser synchronous double-beam welding method for cross-shaped joints is carried out according to the following steps:

[0016] Two lasers are used to emit the main beam a and the main beam b respectively. The two lasers are mirrored on both sides of the cross-shaped joint support plate I1, and the main beam a is divided into the welding beam I11 and the welding beam II12. The focusing spot of the welding beam I11 and The focusing spots of the welding beam II12 are arranged in parallel and act on both sides of the cross-shaped joint diagonal line AC composed of the support plate I1, the support plate II2 and the support plate III3. The optical axis of the welding beam I11 and the welding beam II12 The optical axes of the beams are parallel to the diagonal line AC, the main beam b is divided into welding beam III21 and welding beam IV22, the focusing spot of welding beam III21 and welding beam IV22 are arrang...

specific Embodiment approach 2

[0018] Embodiment 2: This embodiment differs from Embodiment 1 in that the energy of the welding beam I11 is 1 / 2 of the energy of the main beam a. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0019] Embodiment 3: This embodiment differs from Embodiment 1 in that the energy of the welding beam II 12 is 1 / 2 of the energy of the main beam a. Others are the same as in the first embodiment.

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Abstract

The invention provides a synchronous dual-light beam laser welding method of a crossed joint and relates to a welding method. The invention solves the technical problem of low welding efficiency and poor weld quality existing in the existing single-light beam laser welding method. The welding method comprises the following steps: respectively emitting a main light beam a and a main light beam b by applying two lasers, arranging the two lasers on the two sides of a crossed joint supporting plate in an imaging manner, dividing the main light beam a into a welding light beam 11 and a welding light beam 12, dividing the main light beam b into a welding light beam 21 and a welding light beam 22 and synchronously welding the welding light beam 11, the welding light beam 21 and the welding light beam 12. The synchronous dual-light beam laser welding method has the beneficial effect that aiming at the weld characteristics and the quality requirements of the crossed joint, the problems of uneasiness in stress deformation control, poor weld quality and low welding efficiency existing in the current crossed joint welding process are solved.

Description

technical field [0001] The invention relates to a welding method. Background technique [0002] There are a large number of cross-shaped joints in the field of aerospace components and nuclear energy equipment manufacturing, but due to the complex form of joints and high requirements for welding quality, the welding efficiency is low, and the quality of welds often fails to meet the requirements. In the existing cross-shaped joint welding methods, a single beam is used to weld sequentially from both sides of the joint. The disadvantage is that the single beam has a small diameter of the laser spot, a small heat action area, and a small weld width, which is prone to joints. The surface is not fused, and at the same time, it is easy to generate air holes at the bottom of the weld, which affects the welding quality. However, the method of sequentially welding along both sides of the joint not only has low welding efficiency, but also has welding stress concentration and weldin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/24B23K26/067
Inventor 李俐群马国龙陶汪陈彦宾
Owner HARBIN INST OF TECH
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