Aluminum alloy guide tube welding inner support and welding method using inner support

A welding method and technology for aluminum alloys, applied in welding/welding/cutting items, welding equipment, welding equipment, etc., can solve the problems of reducing the incidence of welding porosity of aluminum alloy conduits, avoid surface defects of welds, strengthen ability, the effect of improving the welding current

Inactive Publication Date: 2017-09-12
SHANGHAI AEROSPACE EQUIP MFG GENERAL FACTORY
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The object of the present invention is to provide an aluminum alloy conduit welding inner support and a welding method using the inner support, so as to solve the problem of how to reduce the incidence of welding porosity of aluminum alloy conduits

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  • Aluminum alloy guide tube welding inner support and welding method using inner support
  • Aluminum alloy guide tube welding inner support and welding method using inner support

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Embodiment Construction

[0017] The aluminum alloy conduit welding inner support proposed by the present invention and the welding method using the inner support will be further described in detail below with reference to the accompanying drawings and specific embodiments. Advantages and features of the present invention will be apparent from the following description and claims. It should be noted that the drawings are all in a very simplified form and use imprecise ratios, which are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.

[0018] The core idea of ​​the present invention is that the aluminum alloy conduit welding inner support provided by the present invention, the support sleeve of the inner support is used for the support of the liquid molten pool when the aluminum alloy conduit is welded, and the support core of the inner support tightens the support sleeve to realize the support of the liquid melting pool. The support of th...

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Abstract

The invention provides aluminum alloy guide tube welding inner support. The aluminum alloy guide tube welding inner support comprises a support core and a supporting sleeve, wherein the support core is in the shape of a circular table; the supporting sleeve is different from the support core in material, and is a hollow structure; the inner wall of the supporting sleeve is matched with the outer wall of the supporting sleeve in shape; the outer wall of the supporting sleeve is a cylindrical surface, and is matched with the inner wall of an aluminum alloy tube; a ring of welding leakage slots is formed in the outer wall; and the welding leakage slots are aligned to the center of a welding seam. The invention further provides a welding method using the aluminum alloy guide tube welding inner support. According to the aluminum alloy guide tube welding inner support and the welding method thereof provided by the invention, the supporting sleeve of the inner support is used for supporting a liquid weld pool when the aluminum alloy guide tube is welded, so that welding seam surface defects caused by liquid weld pool sinking in a welding seam welding process are avoided; and the support core of the inner support resists the supporting sleeve, and therefore, welding current can be properly improved, the ability that gas escapes the weld pool is reinforced, and a welding seam pore occurrence rate is reduced.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to an aluminum alloy conduit welding inner support and a welding method using the inner support. Background technique [0002] In recent years, piping systems in aerospace, aviation and other fields have become more and more widely used, especially the use of aluminum alloy conduits. Due to the characteristics of aluminum alloy materials, aluminum alloy fusion welding is often accompanied by the occurrence of air hole defects. At the same time, the welding of aluminum alloy conduits is mainly manual or all-position automatic TIG welding. The welding position changes all the time, such as overhead welding, side welding, etc., welding The change of position is more unfavorable to the overflow of gas in the molten pool, so that the incidence of welding porosity in the aluminum alloy conduit remains high; at the same time, because the inner cavity of the conduit is small, there is usua...

Claims

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Application Information

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IPC IPC(8): B23K37/053B23K31/02
CPCB23K31/027B23K37/0531B23K2101/06B23K2103/10
Inventor 张聃尹玉环马子奇汤化伟李颖李春光曹晓吴伟王卿
Owner SHANGHAI AEROSPACE EQUIP MFG GENERAL FACTORY
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