Ultrasonic-resistance hybrid welding method for resin-based composite material

A composite material and welding method technology, which is applied in the field of composite material connection, can solve problems such as the inability to achieve effective welding of resin-based composite materials, and achieve the effects of simple and fast implementation process, wide application prospects, and efficient construction

Active Publication Date: 2021-01-05
SHENYANG AEROSPACE UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, resistance welding implants are generally metal mesh or carbon fiber woven fabrics, and it is difficult for the molten thermoplastic resin

Method used

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  • Ultrasonic-resistance hybrid welding method for resin-based composite material
  • Ultrasonic-resistance hybrid welding method for resin-based composite material

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0026] Example 1

[0027] An ultrasonic-resistance hybrid welding method for resin-based composite materials, the specific operation steps are as follows:

[0028] (1) Build the welding joint according to the internal structure of the welding interface of the resin-based composite material; place the heating element of the PEI film and the stainless steel mesh implant in sequence on the overlapping welding area of ​​the GF-reinforced PEI thermoplastic resin-based (GF / PEI) composite material, See the order of placement figure 1 , to obtain the welded piece to be processed; place the welded piece to be processed in the welding device, the device diagram is shown in figure 2 ;The wire diameter of the selected stainless steel mesh implant heating element is 0.08mm, and the aperture is 0.4mm;

[0029] (2) Turn on the 2-power supply for welding, adjust the current or voltage so that the maximum temperature in the welding area reaches 400°C; the welding time is 90s; at the same ti...

Example Embodiment

[0032] Example 2

[0033]An ultrasonic-resistance hybrid welding method for resin-based composite materials, the specific operation steps are as follows:

[0034] (1) Build the welding joint according to the internal structure of the welding interface of the resin-based composite material; place the heating element of the PEK film and the nickel-chromium alloy wire mesh implant in sequence on the lapping side of the CF-reinforced PEK thermoplastic resin-based (CF / PEK) composite material The welding area is obtained to obtain the welded piece to be processed; the welded piece to be processed is placed in the welding device; the selected nickel-chromium alloy wire mesh implant heating element has a wire diameter of 0.09mm and an aperture of 0.5mm;

[0035] (2) Turn on the power supply for welding, adjust the current or voltage so that the maximum temperature of the welding area reaches 420°C; the welding time is 90s; at the same time, ultrasonic energy with a vibration frequency...

Example Embodiment

[0038] Example 3

[0039] An ultrasonic-resistance hybrid welding method for resin-based composite materials, the specific operation steps are as follows:

[0040] (1) Build the welding joint according to the internal structure of the welding interface of the resin-based composite material; place the heating element of the PPS film and the iron-chromium-aluminum alloy wire mesh implant in sequence on the joint of the CF-reinforced PPS thermoplastic resin-based (CF / PPS) composite material In the reception welding area, the welded parts to be processed are obtained; the welded parts to be processed are placed in the welding device; the selected iron-chromium-aluminum alloy wire mesh implant heating element has a wire diameter of 0.15mm and an aperture of 0.1mm;

[0041] (2) Turn on the power supply for welding, adjust the current or voltage to make the maximum temperature of the welding area reach 300°C; the welding time is 100s; at the same time, apply ultrasonic energy with a ...

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Abstract

The invention discloses an ultrasonic-resistance hybrid welding method for a resin-based composite material, and belongs to the technical field of composite material connection. The method comprises the following steps that (1) a welding joint is built according to the internal structure of a welding interface of the resin-based composite material; (2) a power supply is switched on for welding; and meanwhile, ultrasonic vibration is applied in the welding process; (3) after ultrasonic vibration is finished, pressure is applied to the upper portion of the welding area; And (4) cooling is conducted, ultrasonic-resistance hybrid welding of the resin-based composite material is completed, and the composite material resistance welding joint is obtained. According to the method, ultrasonic vibration and the resistance heat effect are ingeniously combined, the welding process combines the advantages of the ultrasonic vibration and the resistance heat effect at the same time, the welding process is simple, construction is efficient, no expensive equipment is needed, and the method is environmentally friendly. The prepared resin-based composite material resistance welding joint is excellentin mechanical strength and extremely low in cost, and has wide application prospects in the field of composite material connection of aviation, aerospace, automobiles and the like.

Description

technical field [0001] The invention belongs to the technical field of composite material connection, and in particular relates to an ultrasonic-resistance welding method for resin-based composite materials. Background technique [0002] Resin-based composite materials are one of the main structural materials of aerospace vehicles; the connection between composite material structures is a key technology in the manufacturing process of aircraft. Mechanically fastened connections, welding and adhesive bonding techniques are the two most commonly used joining methods. However, mechanical fastening connections such as bolting and riveting require drilling of composite materials, which affects the mechanical strength of the body. At the same time, bolts or rivets increase the overall weight of the structural parts; welding techniques and bonding make the composite structure non-detachable. Overall, the construction process requires high precision and low error tolerance. In add...

Claims

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Application Information

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IPC IPC(8): B29C65/72B29C65/08B29C65/20B29K105/06
CPCB29C65/72B29C65/08B29C65/20B29C66/721B29K2105/06
Inventor 崔旭王道晟蒲永伟田琳赵普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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