Ultra thin-wall high-temperature alloy lamination laser welding technology and clamp thereof

A high-temperature alloy and laser welding technology, which is applied in laser welding equipment, welding equipment, manufacturing tools, etc., can solve problems such as large welding deformation, welding penetration not meeting the requirements, and welding technology not meeting the technical requirements of new structures. To achieve the effect of widening the weld width, controlling the welding penetration and reducing energy

Active Publication Date: 2016-03-16
CHINA HANGFA GUIZHOU LIYANG AVIATION POWER CO LTD
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the thickness of alloy flakes is generally less than 0.15mm, the traditional alloy flake welding technology will produce large welding deformation, and the welding penetration cannot meet the requirements
With the rapid development of the aviation industry in various countries, especially with the development of the fourth and fifth generation military aeroengines, a large number of new technologies, new processes, new materials and new structures have emerged, and the existing welding technology can no longer meet the requirements of the new structure. skills requirement

Method used

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  • Ultra thin-wall high-temperature alloy lamination laser welding technology and clamp thereof

Examples

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Effect test

Embodiment 1

[0021] Example 1: A certain type of GH4648 high-strength superalloy has a thickness of 0.1mm and a diameter of 100mm with leaf-shaped grooves and finger pieces in the middle. After removing oil and dirt, 10 pieces are stacked together in groups. Assemble the laminations on the fixture and tighten the locking nut 2 to ensure that each lamination is tightly fitted, then use 40% of the normal welding power, and the spot diameter is 0.1mm to locate an area with an arc of 5°, each time In the positioning area, the workpiece is rotated by 1° to be a tack welding spot for 8 uniform tack welding in the circumferential direction, and then the laser power is 75W, the welding speed is 800m / min, and the laser defocus is used to increase the spot diameter to 0.4mm. Process parameters The rotary table is used to scan and weld once every rotation of 0.4°, and finally, laser repair is performed on the part with local unwelded fusion with a laser power of 90W. After welding, the welding meltin...

Embodiment 2

[0022] Example 2: A certain type of GH4648 high-strength superalloy has a thickness of 0.1mm and a diameter of 100mm with leaf-shaped grooves and fingers in the middle. After removing oil and dirt, 10 pieces are stacked together in groups. Assemble the laminations in the fixture and tighten the locking nut 2 to ensure that each lamination is tightly fitted, then use 40% of the normal welding power, and the spot diameter is 0.2mm to locate an area with an arc of 7°, each time In the positioning area, the workpiece is rotated by 1° to be a tack welding spot, and 8 positions are uniformly positioned in the circumferential direction, and then the spot diameter is increased to 0.4mm with a laser power of 85W, a welding speed of 800m / min and laser defocusing. Process parameters The rotary table is used to scan and weld once every rotation of 0.4°, and finally the local unwelded parts are repaired with laser power of 95W. After welding, the welding melting depth is 0.2mm, the outer c...

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Abstract

The invention discloses an ultra thin-wall high-temperature alloy lamination laser welding technology and a clamp thereof. Through cleaning parts before welding, and after removing oil stain and dirt, the clamp is adopted for assembly positioning so as to ensure tight fit of every two laminations and welding clearance, and then, 40% of the normal welding power is utilized to carry out uniform positioned welding of eight circumferential parts on each tack weld for rotating by 1 degree every time with the positioning radian being 5-8 degrees; a rotary working table rotates the laminations at the rotational indexing of 0.4-0.6 degree as the frequency, carries out welding with the welding parameters of laser power being 80+ / -5 W and welding speed being 800 m / min, and finally carries out laser repairing on non-welded local parts at 90+ / -5 W. With adoption of the ultra thin-wall high-temperature alloy lamination laser welding technology, circumferential continuous welding on the circular end faces of the laminations is realized, the leakproofness of the solder sides of the laminations is ensured, the welding penetration can be better controlled, and the part welding deformation can be prevented.

Description

technical field [0001] The invention relates to the technical field of laser welding, in particular to laser welding of super-thin-wall laminated parts of superalloy materials. Background technique [0002] With the continuous development of the aviation manufacturing industry, higher requirements are put forward not only for welding strength, precision, efficiency, appearance, etc., for alloy sheet welding in the process of precision device processing and production. Since the thickness of alloy flakes is generally less than 0.15mm, the traditional alloy flake welding technology will produce large welding deformation, and the welding penetration cannot meet the requirements. With the rapid development of the aviation industry in various countries, especially with the development of the fourth and fifth generation military aeroengines, a large number of new technologies, new processes, new materials and new structures have emerged, and the existing welding technology can no ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/21B23K26/70B23K26/60
CPCB23K26/20
Inventor 夏昌龙何思逸刘健齐维兵陈建敏孙平任志强
Owner CHINA HANGFA GUIZHOU LIYANG AVIATION POWER CO LTD
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