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Novel aluminum alloy mixing pin

A stirring needle, aluminum alloy technology, applied in metal processing equipment, non-electric welding equipment, welding equipment and other directions, can solve problems such as the inability to achieve aluminum alloy plate welding

Inactive Publication Date: 2015-01-28
杨桂珍
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The existing stirring head cannot realize the welding of aluminum alloy plates with a thickness exceeding 40mm

Method used

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  • Novel aluminum alloy mixing pin
  • Novel aluminum alloy mixing pin
  • Novel aluminum alloy mixing pin

Examples

Experimental program
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Embodiment Construction

[0016] Such as figure 1 , figure 2 , image 3 and Figure 4 As shown, the present invention provides a novel aluminum alloy stirring needle, including a conical stirring needle 1, and the conical surface of the conical stirring needle is provided with a multi-handed helix.

[0017] There are 3 straight edges 111, 112, 113 evenly distributed on the conical surface of the conical stirring needle, and 3 conical surfaces, 121, 122, 123, and the helical lines of different rotation directions are respectively arranged on the 3 conical surface edges , which are right-handed helix 2, left-handed helix 3 and circular helix 4, respectively.

[0018] The role of the stirring needle is to generate heat through rotating friction to provide the heat required for welding, and to drive the flow of materials around the stirring needle to form a weld; the shape of the stirring needle is crucial to the stir welding technology, which determines the heating and plasticity of the material flow...

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Abstract

The invention discloses a novel aluminum alloy mixing pin comprising a tapered pin body. The tapered face of the tapered pin body is provided with a plurality of spiral lines. The tapered face of the tapered pin body is evenly provided with three straight-face edges and three taper-face edges; the taper-face edges are provided with spiral lines in different spiral directions, respectively, including a rightward spiral line, a leftward spiral line and a circular spiral line. The novel aluminum alloy mixing pin has the advantages that welding thickness is increased from original 40mm to existing 80mm, the welding thickness is increased by 100%, frictional heat is more evenly distributed through changes in the structure of the pin, material flow is more reasonable, and weld quality is better.

Description

technical field [0001] The invention relates to a novel aluminum alloy stirring needle Background technique [0002] Friction stir welding is a solid-state connection method proposed by The Welding Institute (TWI) in 1991, and applied for intellectual property protection in developed and developing countries around the world in 1993 and 1995. . The principle of this technology is simple, and there are few control parameters, which is easy to automate and can minimize the human factors in the welding process. Compared with traditional fusion welding, friction stir welding technology has many advantages, which makes it have a wide range of industrial application prospects and development potential. Research on the structure, mechanical properties (including fracture, fatigue, corrosion performance) of friction stir welded joints, non-destructive testing and the influence of process parameters on weld quality is the basis for the promotion and application of friction stir wel...

Claims

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Application Information

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IPC IPC(8): B23K20/12
CPCB23K20/1255
Inventor 杨桂珍张磊
Owner 杨桂珍
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