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A method and system for welding double symmetrical heat sources based on soft-arc plasma

A technology of plasma welding and welding method, which is applied in the field of ion double symmetrical heat source welding, can solve the problems of continuous development hidden dangers, low-level quality, and product quality fluctuations, and achieve the effect of improving welding quality, improving quality, and reducing welding deformation

Active Publication Date: 2020-11-20
BEIJING SATELLITE MFG FACTORY
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Problems solved by technology

While skill-based production has created a group of excellent skilled personnel, it also brings hidden dangers to the subsequent sustainable development
Mainly produced by manual operation, product quality fluctuates greatly due to personnel changes, and low-level quality problems are prone to occur due to the influence of personal emotions

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  • A method and system for welding double symmetrical heat sources based on soft-arc plasma
  • A method and system for welding double symmetrical heat sources based on soft-arc plasma
  • A method and system for welding double symmetrical heat sources based on soft-arc plasma

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Embodiment Construction

[0028] In view of the deficiencies in the prior art, the present invention proposes a double-symmetrical heat source welding method based on soft-arc plasma, which can effectively reduce post-weld deformation and improve the quality of the weld, especially for the weld between the skin and the flange in the large-scale sealed cabin structure. The welding has unique advantages. The system of the present invention is as figure 1 As shown, two groups of heads are symmetrically arranged and welded at the same time. Each welding torch welds a 180-degree weld ring to reduce welding deformation caused by asymmetrical heat input. Each group of welding heads is centered on a soft-arc plasma welding torch , to further reduce heat input, thereby reducing welding deformation, and automatic welding can significantly improve welding quality compared with manual welding. Therefore, in view of the welding requirements of complex thin-walled airtight cabins in manned follow-up missions, fig...

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Abstract

Provided is a method for bisymmetric heat source welding based on flexible arc plasma. The method comprises: firstly, obtaining the diameter and plate thickness of a skin flange structure which needswelding, to obtain welding process parameters and motion control parameters of a control system, then, mounting the to-be-welded skin flange structure in a gantry type operation frame through a tool,the control system controlling two welding guns in a double dedicated welding head to perform pilot run of a track according to the motion control parameters, after track offset of the to-be-welded skin flange structure is obtained, correcting an assembling position of the skin flange structure in the gantry type operation frame, finally, the control system controlling the two welding guns in thedouble dedicated welding head to move according to the motion control, and controlling two symmetric welding guns to start arc to weld skin flange circumferential welds according to the welding process parameters, in a welding process, observing a skin flange circumferential weld pool and weld alignment conditions, and adjusting welding tracks of the welding guns in real time. After skin flange structure welding is finished, the tool is dismounted.

Description

technical field [0001] The invention relates to the technical field of spacecraft skin flange structure welding, in particular to a double symmetric heat source welding method based on soft-arc plasma. Background technique [0002] In the structure of the sealed cabin of a large spacecraft, a large number of welds between the thin-walled skin and the flange need to be welded. This type of structure not only has high requirements for the performance and sealing of the welds, but also has high requirements for the accuracy of the structural dimensions. It meets the requirements of post-welding combined processing and installation of other components. In order to meet the development needs of high reliability, long life, and lightweight spacecraft in the future, spacecraft thermal control products are required to operate on-orbit without failure for 20 years. Restricted by the current general equipment and technology, the manual welding argon arc welding method is still used a...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P23/04B23K10/02
CPCB23K28/02B23K37/00
Inventor 黄宁章朋田刘岩杜会桥李冬晓李冉张玉良
Owner BEIJING SATELLITE MFG FACTORY
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