Friction stir welding method for butt ring seam of large-scale weakly rigid hollow column members

A friction stir and welding method technology, applied in welding equipment, non-electric welding equipment, metal processing equipment, etc., can solve the problem of inability to meet the requirements of friction stir welding assembly accuracy, reduce height and complexity, and improve assembly accuracy. , The effect of improving welding accuracy

Active Publication Date: 2020-05-08
CAPITAL AEROSPACE MACHINERY +1
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Problems solved by technology

[0005] The purpose of the present invention is to provide a friction stir welding method for the butt ring seam of large-scale weakly rigid hollow column members, so as to solve the problem in the prior art that large-scale weakly rigid hollow column members cannot meet the requirements of friction stir welding for assembly accuracy

Method used

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  • Friction stir welding method for butt ring seam of large-scale weakly rigid hollow column members
  • Friction stir welding method for butt ring seam of large-scale weakly rigid hollow column members
  • Friction stir welding method for butt ring seam of large-scale weakly rigid hollow column members

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specific Embodiment

[0078] The embodiment of the present invention provides a friction stir welding method for rocket tank assembly, such as Figure 13 As shown, the rocket tank assembly includes a rear bottom section 12, a front bottom section 13, and a plurality of barrel sections 14 between the front bottom section 13 and the rear bottom section 12, and the barrel section 14 is made of aluminum alloy; Next, take the friction stir welding of two storage tank sections 14 (i.e. the first hollow column member 2 and the second hollow column member 4) as an example, and the friction stir welding method is explained as follows:

[0079] The outer radius R1, inner radius R2 and axial length d of the first hollow column member 2 and the second hollow column member 4 are the same, the outer radius is R1, the inner radius is R2, and the outer pressing mechanism is composed of a base and a pressing part , the base and the pressing part are fastened together to form a hollow structure, the cross section of...

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Abstract

The invention provides a friction stir welding method of a butt joint circular beam of large-scale weakly rigid hollow column components, and belongs to the technical field of friction stir welding. According to the friction stir welding method of the butt joint circular beam of the large-scale weakly rigid hollow column components, an outer compressing mechanism tightens a welding component, the roundness and levelness of the central axis of the components to be welded are restrained by a rigid hollow face on the outer compressing mechanism, consistency of the roundness of the components to be welded and the roundness of the rigid hollow face is ensured through an inner compressing mechanism, and accordingly the assembly roundness of the components to be welded is controlled to be within 0.5 mm; and due to consistency of the central axis of the components to be welded and the outer compressing mechanism, precision of the assembly clearance and unfitness of butt joint of the two sections of components to be welded is improved.

Description

technical field [0001] The invention relates to a welding method for a hollow column member, belonging to the technical field of friction stir welding. Background technique [0002] Friction stir welding technology is a new solid-phase welding technology invented by the British Welding Institute in the early 1990s. It is very suitable for For the welding of aerospace aluminum alloy storage tanks. [0003] The application process of this technology in my country's launch vehicle storage tank is from the barrel section to the bottom of the tank, to the ring seam of the final assembly of the storage tank, that is, the structure and technology follow from easy to difficult, and gradually advance. Due to the small size, simple structure, and easy assembly accuracy of the parts of the barrel section and the bottom of the box, my country has realized the application of friction stir welding technology on the longitudinal seam of the barrel section and the main weld of the box bott...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K20/00B23K20/12B23K20/24
CPCB23K20/002B23K20/122B23K20/24
Inventor 王国庆郝云飞高彦军赵衍华苏志强郝志斌邱龙乔森李峰
Owner CAPITAL AEROSPACE MACHINERY
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