Hot riveting connection method of thermoplastic material and light alloy

A thermoplastic material and lightweight alloy technology, applied in the field of metal and composite material connection, can solve the problems of inability to fully meet the performance requirements, limited joint performance improvement, etc. Effect

Inactive Publication Date: 2021-03-30
SHENYANG AEROSPACE UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method has limited improvement in joint performance and cannot fully meet the performance requirements.

Method used

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  • Hot riveting connection method of thermoplastic material and light alloy
  • Hot riveting connection method of thermoplastic material and light alloy
  • Hot riveting connection method of thermoplastic material and light alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039]Grind the aluminum alloy sample with 400-grit sandpaper, and then use a laser drilling machine to prefabricate a through hole in the center of the aluminum alloy sample to be welded, and make holes in the corresponding position of the glass fiber / PEI prepreg; implant the stainless steel mesh into the body , glass fiber / PEI (glass fiber composite PEI) prepreg according to the order of joint structure design ( Figure 4 ) placed on the overlapping area to be welded between aluminum alloy and GF / PEI (chopped glass fiber reinforced PEI) laminates; apply an initial pressure of 0.3MPa, turn on the power supply, adjust the voltage and current so that the maximum temperature of the welding area reaches 360°C, and the welding time After cooling for 120s, an aluminum alloy-GF / PEI laminate hot riveted piece is obtained, and its joint strength is 12MPa.

Embodiment 2

[0041] Grind the aluminum alloy sample with 400-grit sandpaper, and then use a laser drilling machine to prefabricate a through hole in the center of the aluminum alloy sample to be welded, and make holes in the corresponding position of the glass fiber / PEEK prepreg; implant the stainless steel mesh into the body , glass fiber / PEEK prepreg according to the order of joint structure design ( Figure 4 ) placed on the overlapping area to be welded between the aluminum alloy and the GF / PEEK laminate; apply an initial pressure of 0.3 MPa, turn on the power supply, adjust the voltage and current so that the maximum temperature of the welding area reaches 380°C, and the welding time is 180s. After cooling, the aluminum alloy is obtained -GF / PEEK laminate heat riveting parts, the strength is 26Mpa.

Embodiment 3

[0043] Grind the aluminum alloy sample with 400-grit sandpaper, and then use a laser drilling machine to prefabricate a through hole in the center of the aluminum alloy sample to be welded, and make holes in the corresponding position of the glass fiber / PPS prepreg; implant the stainless steel mesh into the body , glass fiber / PPS prepreg according to the order of joint structure design ( Figure 4 ) placed in the overlapping area to be welded between the aluminum alloy and the PPS sample; apply an initial pressure of 0.3MPa, turn on the power supply, adjust the voltage and current so that the maximum temperature of the welding area reaches 300°C, and the welding time is 180s. After cooling, the aluminum alloy-PPS is obtained. For hot riveted parts, the joint strength is 21MPa.

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Abstract

The invention provides a hot riveting connection method of a thermoplastic material and a light alloy. A hole is preformed in the light alloy, and a light alloy / thermoplastic material high-efficiencyheterogeneous joint is formed by using the light alloy with the hole, a thermoplastic fiber prepreg, a heating element, the thermoplastic material and the like through an electric heating melting bonding process; due to the introduction of the preformed hole, the interface bonding strength of the thermoplastic resin adhesive layer and the light alloy is improved; and due to the introduction of thethermoplastic fiber prepreg, the situation that the current of the heating element and the generated heat leak through the light alloy is avoided. The method disclosed by the invention is simple, quick and extremely low in cost, and has a wide application prospect in the fields of metal and non-metal material connection of aviation, aerospace, automobiles and the like.

Description

technical field [0001] The invention relates to the technical field of connecting metals and composite materials, in particular to a hot riveting method for connecting thermoplastic materials and light alloys. Background technique [0002] Lightweight alloys and thermoplastic materials are the two most important structural materials in the industrial field; as far as the aviation field is concerned, the vast majority of aircraft structures are made of lightweight alloys and thermoplastic composites; therefore, lightweight alloys and thermoplastic composites The connection between them is an inevitable and important link in the aircraft manufacturing process. Mechanical fastening and adhesive bonding are currently the two most commonly used techniques for joining dissimilar materials. However, in the mechanical fastening connection, bolts or rivets increase the overall weight of the structural member, and the small cross-sectional area of ​​the connection hole makes the stre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C65/44B29C65/34
CPCB29C65/44B29C65/344B29C66/02245B29C66/02242B29C66/1122B29C66/304B29C66/9141B29C66/9241B29C66/7422
Inventor 崔旭田琳王道晟赵普蒲永伟熊需海孟庆实王朔李晓东张辰许鹏贺军李威
Owner SHENYANG AEROSPACE UNIVERSITY
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