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Welding gas protection device, laser wire filling welding system and welding method

A gas shielding and shielding gas technology, applied in welding/welding/cutting articles, welding equipment, welding equipment, etc., can solve the problems of unstable gas shielding, difficulty in forming welded joints, and poor cooling effect of welds in laser wire-filled welding. , to achieve the effect of improving the cooling and solidification effect, good surface forming, and controlling the cooling speed of the weld seam

Active Publication Date: 2021-06-18
NANCHANG HANGKONG UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The object of the present invention is to provide a welding gas shielding device, a laser wire filling welding system and a welding method for narrow gaps of dissimilar materials to solve the existing austenitic The problem of unstable and insufficient gas protection for laser wire-filled welding of bulk stainless steel and high-temperature alloy dissimilar materials is unstable and insufficient, and the cooling effect of the weld is poor, making it difficult to form a good welded joint

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  • Welding gas protection device, laser wire filling welding system and welding method
  • Welding gas protection device, laser wire filling welding system and welding method
  • Welding gas protection device, laser wire filling welding system and welding method

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Embodiment 1

[0042] Such as Figure 1-6 As shown, this embodiment provides a welding gas shielding device 100 for narrow gap welding of dissimilar materials, especially suitable for welding between GH4169 superalloy and SUS316 austenitic stainless steel dissimilar materials, including the upper shielding gas dragging cover device 7 And back protection gas device 8.

[0043] The upper protective gas dragging cover device 7 is mainly composed of a cover body, a main protective gas port 23, a secondary protective gas port 22, a side protective gas port 21, a main protective gas flow pipe 37, an air flow calming screen 30, a secondary protective gas container chamber 29, and a side protection gas port. Gas channel 28 and so on, wherein: the main protective gas is blown obliquely into the molten pool area through the main protective gas interface 23 and the main protective gas flow pipe 37, which is used to reduce the shielding of the laser by the plasma cloud formed by ionization of the metal ...

Embodiment 2

[0062] Such as figure 1As shown, this embodiment provides a laser wire-filled welding system, including an upper shielding gas dragging cover device 7, a flange 6, a height adjustment mechanism, a rear shielding gas device 8, a wire feeding system, a laser system, a numerical control console 16, The control cables, the parts to be welded 13, etc., the upper shielding gas dragging device 7 and the rear shielding gas device 8 all adopt the structure described in the first embodiment. Among them: the laser system includes a laser 1 and a laser welding head 2 electrically connected to the laser 1, the laser welding head 2 is used to emit a laser beam 25; the height adjustment mechanism is composed of a support rod 3, a fixing bolt 4 and a height adjustment rod 5, the upper part The top of the protective air drag cover device 7 is provided with a connecting rod 20, the connecting rod 20 is connected to the height adjusting rod 5 through the flange 6, the height adjusting rod 5 is h...

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Abstract

The invention discloses a welding gas protection device, a laser wire filling welding system and a welding method, relates to the technical field of laser wire filling welding, and is particularly suitable for narrow-gap welding of dissimilar materials. The welding gas protection device comprises an upper protection gas dragging cover device and a back protection gas device. The laser wire filling welding system comprises the welding gas protection device, a height adjusting mechanism, a wire feeding system, a laser system, a numerical control console and the like. The welding gas protection device for the narrow gaps of the dissimilar materials is reasonable in structural design, gas protection can be carried out on the upper area and the lower area of a welding area in the narrow gap welding process of the dissimilar materials, the problem that laser narrow gap welding gas protection is insufficient and unstable is solved, the welding seam cooling speed can be adjusted and controlled, the protection effect is enhanced, and the welding efficiency is improved. By means of the welding gas protection device, the laser filler wire welding system and the welding method, a welding joint which meets the welding mechanical property and is good in surface forming can be obtained, and practicability is high.

Description

technical field [0001] The invention relates to the technical field of laser wire-filled welding, in particular to a welding gas protection device for narrow gaps of dissimilar materials, a laser wire-filled welding system and a welding method. Background technique [0002] The magnet container in the China Fusion Engineering Experimental Reactor (CFETR) mostly uses SUS316 series austenitic stainless steel. The magnet container needs to withstand a large electromagnetic force under the magnetic field, and the yield strength of its external structural material needs to meet the 1000MPa level. Based on the current conditions Under normal circumstances, it is difficult for general austenitic stainless steel materials to meet this strength condition. The GH4169 nickel-based superalloy has the characteristics of high strength, good creep resistance and excellent fatigue resistance, and can be used as part of the material for the external components of the magnet coil of the above...

Claims

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Application Information

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IPC IPC(8): B23K26/14B23K26/24B23K26/70B23K103/18
CPCB23K26/14B23K26/24B23K26/702B23K2103/18Y02E30/10B23K2103/26B23K2103/05B23K26/211B23K26/242B23K26/26B23K26/323B23K37/0408B23K26/1464B23K37/06B23K33/00B23K37/0461B23K9/0253B23K9/325
Inventor 王善林张元敏信纪军陈玉华谢吉林方乃文张体明胡锦扬黄永德
Owner NANCHANG HANGKONG UNIVERSITY