Welding method and device for medium-thickness aluminum alloy plate

A technology of aluminum alloy plate and welding method, which is applied in the direction of welding equipment, welding accessories, arc welding equipment, etc., can solve the problems of high strength of aluminum alloy joints, less pores and inclusions, and small heat-affected zone, so as to reduce pores and Inclusion, arc stiffness is good, and the effect of reducing workload

Pending Publication Date: 2022-06-17
ARMOR ACADEMY OF CHINESE PEOPLES LIBERATION ARMY
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Problems solved by technology

[0003] In order to solve many technical difficulties in the welding forming and remanufacturing process of aluminum alloy sheets in the prior art, for example, the large thermal expansion coefficient of the aluminum alloy itself will cause welding thermal deformation, and the stress concentration inside the material will cause welding cracks. In addition, due to A large number of pores are produced during the welding forming process, further forming technical problems such as welding defects. The present invention proposes a welding method and device for medium-thick aluminum alloy plates, which have high welding efficiency, small heat-affected zone, narrow weld seam, aluminum Alloy joints have the advantages of high strength, less pores and inclusions, and small welding deformation, especially suitable for welding large aluminum alloy structural parts and medium-thick aluminum alloy plates

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  • Welding method and device for medium-thickness aluminum alloy plate
  • Welding method and device for medium-thickness aluminum alloy plate
  • Welding method and device for medium-thickness aluminum alloy plate

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Embodiment Construction

[0033] The present invention will be described in detail below with reference to the accompanying drawings.

[0034] Detailed exemplary embodiments are disclosed below. However, specific structural and functional details disclosed herein are merely for purposes of describing example embodiments.

[0035] It should be understood, however, that this invention is not limited to the specific exemplary embodiments disclosed, but covers all modifications, equivalents, and alternatives falling within the scope of this disclosure. In the description of all the figures, the same reference numerals refer to the same elements.

[0036] Referring to the accompanying drawings, the structures, proportions, sizes, etc. shown in the drawings in this specification are only used to cooperate with the contents disclosed in the specification, so as to be understood and read by those who are familiar with the technology, and are not intended to limit the scope of the present invention. The limit...

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Abstract

The invention discloses a welding method and device for a medium-thickness aluminum alloy plate. The method comprises the steps that A, a welding groove of the medium-thickness aluminum alloy plate is machined to be in a V shape or a U shape; b, perforation plasma arc welding is conducted on the back face of the medium-thickness aluminum alloy plate, the back face of a welding seam obtained through perforation plasma arc welding is formed at the bottom of the truncated edge of the V-shaped or U-shaped groove, and bottoming welding is completed; and C, the medium-thickness aluminum alloy plate is turned over, and filling welding is conducted on the V-shaped or U-shaped groove through the front face of the medium-thickness aluminum alloy plate. The welding method and device for the medium-thickness aluminum alloy plate have the advantages of being high in welding efficiency, small in heat affected zone, narrow in welding seam, high in aluminum alloy connector strength, few in air holes and inclusions, small in welding deformation and the like.

Description

technical field [0001] The invention relates to mechanical processing technology, in particular to the technical field of processing, forming and remanufacturing of aluminum alloy plates. Background technique [0002] Aluminum alloy materials, especially 2000 series and 7000 series aluminum alloys, have become the aerospace industry due to their high strength and hardness, good corrosion resistance, non-magnetic properties, good electrical conductivity, thermal conductivity, strong plasticity, and excellent weldability and mechanical properties. , important metal materials in aerospace and land warfare. With the wide application of aluminum alloy materials, higher requirements are put forward for the strength and comprehensive performance of aluminum alloy welded joints in medium and thick plates. However, there are many technical difficulties in the welding forming and remanufacturing process of aluminum alloy sheets. For example, the large thermal expansion coefficient of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/16B23K9/235B23K9/32B23K33/00
CPCB23K9/16B23K9/235B23K33/004B23K9/32
Inventor 刘玉欣吕耀辉孙哲
Owner ARMOR ACADEMY OF CHINESE PEOPLES LIBERATION ARMY
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