Welding fixture and method of brazing large-scale aluminum alloy curved skin and ribbed skeleton structure

A brazing method and skeleton structure technology, applied in the direction of welding/welding/cutting items, welding equipment, auxiliary welding equipment, etc., can solve problems such as unsuitable components and deformation, and achieve improved fluidity, high efficiency, and high welding accuracy Effect
CN110899896AActive Publication Date: 2020-03-24HARBIN INST OF TECH +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HARBIN INST OF TECH
Publication Date
2020-03-24

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Abstract

The invention relates to a welding fixture and a method for brazing a large-size aluminum alloy curved skin and a ribbed skeleton structure. The purpose of the welding fixture and the method is to solve the problem that the existing brazing method is not suitable for the brazing of the large-size aluminum alloy curved skin and the ribbed skeleton structure or the deformation of a component is occurred after brazing. The welding fixture comprises a heat preservation layer, a heating blanket, a limiting mold, a mold pull rod, a pressurizing gasket and a pressurizing screw rod; and the method comprises the following steps that heat treatment before welding, polishing and cleaning, brazing filler metal coating are carried out for the aluminum alloy curved skin and the ribbed skeleton structure, then brazing is carried out through using the welding fixture. According to the welding fixture and the method for brazing the large-size aluminum alloy curved skin and the ribbed skeleton structure, the size of the weldable component is large, the deformation amount in the process of workpiece welding is reduced, the welding precision is high, and the welding fixture and the method is applied to the field of aluminum alloy brazing.
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Description

technical field

[0001] The invention relates to a welding jig and a method for brazing a large-size aluminum alloy curved surface skin and a skeleton structure with ribs. Background technique

[0002] Aluminum alloys have excellent comprehensive properties such as high strength, low density, good thermal conductivity, and strong machinability, and are widely used in the fields of automobiles, aerospace, and electronics. On the basis of ensuring the structural strength, in order to further meet the needs of lightweight development, many parts are designed as a hollow structure with the characteristics of a closed cavity. The side is the skin, and the two are combined into one body by welding. In addition, in addition to the common flat plate structure, this closed cavity often presents a curved surface structure with a certain curvature, that is, the curved surface skin is welded to the web plate of the ribbed skeleton structure with a corresponding curvature.

[0003] From...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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