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Laser swing welding method for medium and thick plate armored steel

A welding method and technology for armored steel, applied in laser welding equipment, welding equipment, welding/welding/cutting objects, etc., can solve problems such as poor forming, and achieve the effects of preventing energy loss, increasing inclination angle, and enhancing gap adaptability

Active Publication Date: 2020-03-24
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem of poor forming caused by large gaps and misalignment in the actual production welding process of armor steel butt joints of medium and thick plates, the present invention proposes a laser swing welding method for armor steel of medium and thick plates

Method used

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  • Laser swing welding method for medium and thick plate armored steel
  • Laser swing welding method for medium and thick plate armored steel
  • Laser swing welding method for medium and thick plate armored steel

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specific Embodiment approach 1

[0019] Specific implementation mode one: combine Figures 1 to 3 Describe this embodiment mode, a kind of medium and thick plate armor steel laser swing welding method of this embodiment mode, it is to carry out according to the following steps:

[0020] Step 1: smoothing the parts to be welded of the workpiece, and grinding or cleaning the surfaces on both sides of the workpiece after processing;

[0021] Step 2: fix the workpiece to be welded after grinding or cleaning on the welding fixture, add a formed base plate at the bottom of the gap, leave a protrusion in the middle of the base plate, and fix it at the edge of the base plate;

[0022] Step 3: Set the process parameters: the laser power of bottom welding is 2kW~3kW, the defocus amount is +5~+15mm, the laser swing range is 1~8mm, the swing frequency is 0~5Hz, and the shielding gas is pure argon. The shielding gas flow rate is 10L / min~40L / min, the welding speed is 0.3~1.2m / min; the laser power for filling welding is 1....

specific Embodiment approach 2

[0024] Specific implementation mode two: combination Figures 1 to 3 This embodiment is described. The difference between this embodiment and the first embodiment is that the workpiece to be welded is a butt joint of 6252 armored steel with a thickness of 12 mm.

[0025] Others are the same as in the first embodiment.

specific Embodiment approach 3

[0026] Specific implementation mode three: combination Figures 1 to 3 This embodiment will be described. The difference between this embodiment and the first embodiment is that the welding wire is GM120 welding wire with a diameter of 1.2 mm.

[0027] Others are the same as in the first embodiment.

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Abstract

The invention discloses a laser swing welding method for medium and thick plate armored steel, and relates to the field of material processing engineering. The method solves the problem of poor forming caused by large gaps and staggered edges in the actual production welding process of a medium and thick plate armored steel butt joint, and aims at welding the medium and thick plate butt joint, thelaser swing welding method is adopted, the mechanical swing and bottom plate preforming way is adopted for welding during backing welding, galvanometer scanning type swing laser is adopted for fillerwire welding during filling welding, and the method is applied in the field of medium and thick plate armored welding.

Description

technical field [0001] The invention belongs to the field of material processing engineering, and in particular relates to a laser swing welding method for medium-thick plate armor steel. Background technique [0002] The wheeled infantry fighting vehicles and tracked vehicles undertaken by our country's existing military enterprises are all large and complex weapons and equipment, and many parts on them are permanently connected by welding structure. The welding methods currently used mainly include manual arc welding, tungsten argon arc welding (TIG), CO 2 Gas arc welding, MIG / MAG welding, etc. However, traditional welding methods are likely to cause problems such as large welding deformation, unstable quality, difficulty in controlling welding stress, and difficulty in ensuring weld quality and appearance consistency. Laser welding is an advanced welding technology with fast heating and The cooling speed and narrow heat-affected zone have become one of the best methods ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/21B23K26/08B23K26/14B23K26/60
CPCB23K26/08B23K26/14B23K26/21B23K26/60B23K2103/04
Inventor 雷正龙黎炳蔚冯和永孙虎赵孟颖万鹏高金良冯文韬
Owner HARBIN INST OF TECH
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