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Method for connecting metal material with resin matrix composite material via friction stir welding

A technology of friction stir welding and metal materials, applied in welding equipment, metal processing equipment, non-electric welding equipment, etc., can solve the problems of pre-processing and stress concentration, low bonding strength, thermal deformation, etc., and achieve fast connection speed and automation High degree, the effect of improving the utilization rate

Inactive Publication Date: 2017-01-04
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technology can solve many problems existing in traditional methods, such as low bonding strength, pre-processing and stress concentration caused by riveting, energy consumption and thermal deformation during welding

Method used

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  • Method for connecting metal material with resin matrix composite material via friction stir welding
  • Method for connecting metal material with resin matrix composite material via friction stir welding

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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0030] Implementation Option 1: Combining figure 1 Explain that this embodiment is accomplished through the following steps:

[0031] Step 1: Clean the metal material A and the resin-based composite material B with a thickness of 2.0mm with alcohol, stack the metal material A on the resin-based composite material B, and then fix the two on the workbench with a clamp.

[0032] Step 2: Control the tool stirring head C rotating at high speed to insert the metal material A and not contact the surface of the resin-based composite material B. Under the joint action of the friction heat generated by the tool stirring head C and the pressing pressure of the tool shoulder D, the metal material Direct connection between A and resin-based composite B. Wherein the diameter of the stirring head is 2.0 mm, and the diameter of the tool shoulder is 20 mm.

[0033] Step 3: Set the process parameters of friction stir welding, the tool speed is 1000rpm, the inclination angle is 0° when the to...

Embodiment approach 2

[0035] Set the rotation speed of the tool to 2000rpm, the welding speed to 100mm / min, the inclination angle of the tool to 2° when the tool advances, and the insertion and holding time of the stirring head to 5 seconds, and the others are the same as in the first embodiment. The operation command is input through the CNC machine tool to automatically complete the linear lap welding between the two materials; after the welding is completed, it is fully cooled to obtain the metal material / resin material connection.

Embodiment approach 3

[0037] The rotational speed of the tool is set to 4000rpm, the welding speed is 1000mm / min, the inclination angle of the tool is 2° when the tool advances, the insertion and holding time of the stirring head is 2 seconds, and the others are the same as the second embodiment. The operation command is input through the CNC machine tool to automatically complete the linear lap welding between the two materials; after the welding is completed, it is fully cooled to obtain the metal material / resin material connection.

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Abstract

The invention provides a method for connecting a metal material with a resin matrix composite material via friction stir welding. The method adopts the principle that friction heat and pressure are provided by a friction stir welding device, and the connection between the metal material and the resin composite material is directly realized. Concretely, the method comprises the following steps: overlaying a metal material plate on resin, and performing fixation through a jig; then setting a technological parameter of friction stir welding, inputting an operation command through a numerical control machine tool, and automatically accomplishing overlap welding of shapes, such as dots, lines and rings; performing sufficient cooling after welding accomplishment, so as to obtain a metal material / resin material connecting piece. The technology has the advantages that the direct connection between metal and the resin material is realized, the combination speed is high, the strength is high, automatic connection of dots, lines, planes and three-dimensional shapes can be realized, the method can be widely applied to practical production processes of automobiles, trains and airplanes, and the purposes of light weight of products and energy conservation and environment protection are realized.

Description

technical field [0001] The invention relates to a connection method between a metal material and a resin-based composite material, and belongs to the technical field of material welding engineering. Background technique [0002] Currently, China is the world's CO 2 The country with the largest emissions, the emissions in 2014 exceeded 10 billion tons, about the sum of the United States, the European Union and Japan. How to reduce energy consumption and reduce CO 2 Emissions are an important issue worldwide. At present, China's transportation accounts for about 6% of the total emissions, but with the rapid development of the automobile industry, emissions are expected to increase significantly to 20-30% of the emissions of the automobile industry in developed countries. For automobiles, the development of technology to improve fuel efficiency is very important, and vehicle weight reduction is one of the effective ways. Its core is to use as many lightweight materials as p...

Claims

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Application Information

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IPC IPC(8): B23K20/12B23K20/24
CPCB23K20/127B23K20/24
Inventor 田无边孙正明张培根张亚梅施锦杰丁健翔
Owner SOUTHEAST UNIV
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