Special backing plate for friction-stir welding and welding method adopting backing plate

A technology of friction stir welding and welding method, which is applied in the direction of welding equipment, welding/welding/cutting items, non-electric welding equipment, etc., and can solve the problems affecting the welding quality and reliability of aluminum alloy sheet welds, large welding deformation, etc., to achieve Adaptable, easy-to-operate effects
CN106513981AInactive Publication Date: 2017-03-22SHANGHAI AEROSPACE EQUIP MFG GENERAL FACTORY
6 Cites 6 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
SHANGHAI AEROSPACE EQUIP MFG GENERAL FACTORY
Publication Date
2017-03-22
Estimated Expiration
Not applicable Β· inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
Patent Text Reader

Abstract

The invention provides a special backing plate for friction-stir welding and a welding method adopting the backing plate. A U-shaped or V-shaped welding leakage groove is formed in the center line of the special backing plate in the length direction. The welding leakage groove is located under a weld joint so that incomplete-penetration materials on the back of the weld joint can be squeezed into the welding leakage groove. The two sides of the welding leakage groove are bevels. The angles of the bevels are determined according to deformation of the plate. Through the special backing plate for friction-stir welding and the welding method adopting the backing plate, the incomplete-penetration materials on the back of the weld joint can be squeezed into the welding leakage groove; through the subsequent incomplete-penetration grinding procedure, the incomplete-penetration materials on the back of the weld joint are removed thoroughly, and complete penetration of the weld joint is realized. The two sides of the welding leakage groove are machined into the bevels used for conducting pre-welding predeformation on aluminum alloy plates so as to offset deformation generated in the welding process. Operation is easy. The adaptability is high.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the field of welding, in particular to a special backing plate for friction stir welding and a welding method using the backing plate. Background technique

[0002] As a new green solid-phase welding technology, friction stir welding has outstanding process characteristics such as low stress, low energy consumption, and no radiation, and is especially suitable for tailor welding of aluminum alloy sheets. The traditional friction stir welding process of aluminum alloy plates is prone to incomplete penetration defects and large welding deformation after welding. The above problems have affected the welding quality and reliability of aluminum alloy sheet welds. Contents of the invention

[0003] In order to solve the above technical problems, the technical solution of the present invention is to provide a special backing plate for friction stir welding, which is used to fix the plates to be welded. The special backing plate...

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
Login to View More