Method for connecting metal and carbon fiber composite material through electric activation-assisted ultrasonic waves

A composite material and ultrasonic technology, applied in metal processing equipment, welding equipment, non-electric welding equipment, etc., can solve the problems of resin aging and short effective bonding time, and achieve the effect of promoting plastic flow

Pending Publication Date: 2022-06-03
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the current technical problems of resin aging and short effective bonding time in the connection between carbon fiber composite materials and metal materials, the present invention provides a method for electroactivation-assisted ultrasonic connection of metal and carbon fiber composite materials

Method used

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  • Method for connecting metal and carbon fiber composite material through electric activation-assisted ultrasonic waves
  • Method for connecting metal and carbon fiber composite material through electric activation-assisted ultrasonic waves
  • Method for connecting metal and carbon fiber composite material through electric activation-assisted ultrasonic waves

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Effect test

Embodiment 1

[0029] A method for connecting metal and carbon fiber composite materials by electro-activation assisted ultrasonic wave, comprising the following steps:

[0030] Step 1, perform surface treatment on the composite surface of carbon fiber composite material PEEK and magnesium alloy AZ31B;

[0031] Step 2, laying the metal plate after the surface treatment in step 1 on the insulating backing plate and fixing, and then placing the carbon fiber plate after the surface treatment in step 1 on the metal plate and fixing;

[0032] Step 3, connect and fix the copper electrode connected by the pulse power supply to both ends of the metal plate;

[0033] Step 4, applying a pulse current to the metal plate, the current is 80A, the frequency is 500Hz, the duty cycle is 60%, and the surface temperature of the metal plate is monitored at the same time;

[0034] Step 5: Perform ultrasonic spot welding. During the welding process, the power of the ultrasonic vibration system is 4000W, the vib...

Embodiment 2

[0036] A method for connecting metal and carbon fiber composite materials by electro-activation assisted ultrasonic wave, comprising the following steps:

[0037] Step 1, surface treatment is performed on the carbon fiber composite material PEEK and the aluminum alloy 5052 composite surface;

[0038] Step 2, laying the metal plate after the surface treatment in step 1 on the insulating backing plate and fixing, and then placing the carbon fiber plate after the surface treatment in step 1 on the metal plate and fixing;

[0039] Step 3, connect and fix the copper electrode connected by the pulse power supply to both ends of the metal plate;

[0040] Step 4, applying pulse current to the metal plate, the current is 50A, the frequency is 600Hz, the duty cycle is 50%, and the surface temperature of the metal plate is monitored at the same time;

[0041] Step 5: Perform ultrasonic spot welding. During the welding process, the power of the ultrasonic vibration system is 4000W, the v...

Embodiment 3

[0043] A method for connecting metal and carbon fiber composite materials by electro-activation assisted ultrasonic wave, comprising the following steps:

[0044] Step 1, surface treatment of carbon fiber composite material PA6 and stainless steel SS304 composite surface;

[0045] Step 2, laying the metal plate after the surface treatment in step 1 on the insulating backing plate and fixing, and then placing the carbon fiber plate after the surface treatment in step 1 on the metal plate and fixing;

[0046] Step 3, connect and fix the copper electrode connected by the pulse power supply to both ends of the metal plate;

[0047] Step 4, applying pulse current to the metal plate, the current is 100A, the frequency is 1200Hz, the duty ratio is 70%, and the surface temperature of the metal plate is monitored at the same time;

[0048] Step 5, ultrasonic spot welding is performed. During the welding process, the power of the ultrasonic vibration system is 4000W, the vibration freq...

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Abstract

The invention discloses a method for connecting metal and a carbon fiber composite material through electric activation-assisted ultrasonic waves, and belongs to the technical field of composite processing and preparation of carbon fiber composite materials/metal materials. Firstly, pulse current is applied to the to-be-compounded surface of a metal plate, metal makes contact with conductive carbon fibers to generate micro-area discharge, interface local high temperature can be achieved, a to-be-connected interface is activated, and the chemical metallurgical reaction of the interface is promoted. Secondly, utilizing ultrasonic high-frequency vibration and friction heat to promote plastic flow of a resin matrix of an interface to be connected, and realizing connection between the resin and the metal and connection between the carbon fibers and the metal under the action of a certain pressure;

Description

technical field [0001] The invention belongs to the technical field of composite processing and preparation of carbon fiber composite materials / metal materials, in particular to a method for connecting metal and carbon fiber composite materials with electro-activation-assisted ultrasonic waves. Background technique [0002] Carbon fiber composite materials have the advantages of light weight and high strength, but their shortcomings such as high production cost, high brittleness and easy fracture limit their overall application. Metal has the advantages of good electrical conductivity and good plasticity. The composite connection of carbon fiber composite materials and metal materials can complement each other's advantages and realize composite materials with better performance. schedule. [0003] At present, there are three technologies used to connect carbon fiber composite materials and metal materials: riveting, bonding and welding. Riveting needs to open holes in the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K20/10B23K20/22B23K20/24B29C65/64
CPCB23K20/10B23K20/22B23K20/24B29C65/64B29C65/645
Inventor 张婷婷王艳王涛梁建国许振波朱凯航
Owner TAIYUAN UNIV OF TECH
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