A kind of welding method of carbon fiber material and metal material

Abstract

The invention provides a carbon fiber material and metal material welding method. The method includes the following steps: firstly, embedding a solidified metal welding rod in a carbon fiber preformed body formed by laying of multiple carbon fiber material layers, and enabling one part of the metal welding rod to extend out of the carbon fiber preformed body to form a carbon fiber structural part; secondly, utilizing the metal welding rod in the carbon fiber structural part to be welded with a metal part so as to realize welded connection of a carbon fiber material and a metal material. The metal welding rod is arranged in the carbon fiber preformed body innovatively, welded connection between the carbon fiber material and the metal material is realized via a simple operation process and high welding strength, the mode of welded connection between the carbon fiber material and the metal material is innovated with ultra-low cost and a brand-new method, application of the carbon fiber material substituting for metal to multiple technical fields is promoted, and development of the carbon fiber material is promoted greatly.

Description

technical field [0001] The invention relates to the field of welding technology, and more specifically relates to a welding method for carbon fiber materials and metal materials. Background technique [0002] In modern new material technology, carbon fiber materials are widely used in thermal control systems due to their high strength, light weight and excellent thermal conductivity, especially in automobiles and aerospace, which makes their connection with metals an inevitable consideration. At present, the traditional welding method of carbon fiber materials is thermoplastic carbon fiber composite material fusion bonding technology. Thermoplastic carbon fiber composite material fusion bonding (FusionBonding) technology mainly refers to the local melting of the resin in the thermoplastic carbon fiber composite material to be connected through a certain heating method. It is a method of cooling and solidifying to a type of structural member with a certain mechanical strength...

AI Technical Summary

Problems solved by technology

However, the melting connection technology of this thermoplastic carbon fiber composite material has huge shortcomings in realizing the connection between carbon fiber and metal parts. The welding strength with metal parts is not high and the impact is easy to break, especially for heavy metal structural parts. low maneuverability

There is also a welding technology for carbon fiber materials in the prior art, which is similar to this fusion connection technology. Titanium powder, aluminum powder, nano-carbon powder, etc. are mixed to form a welding layer. After the welding layer is melted at high temperature, the carbon fiber and metal Components are welded together, similar to injecting metal solder into the end faces of carbon fiber structural parts to be connected, melting it and welding with metal parts, etc. These welding methods have the following defects: 1. The welding strength is limited, because metal solder often It only exists near the end surface of carbon fiber parts, and it is difficult to penetrate into the interior of carbon fiber parts, so that the welding strength between carbon fiber parts and metal parts cannot be guaranteed. Especially for large metal structural parts used in vehicles, the practicability is poor. The limited welding strength between carbon fiber materials also makes this welding method unable to guarantee high-strength welding of large metal structural parts and carbon fiber parts; 2. The welding process is complicated and the cost is high

First of all, the configuration cost of solder is relatively high, and the operation process of this solder is more complicated whether it is to form an intermediate welding layer or inject it into the welding surface of carbon fiber structural parts, which in turn increases the welding cost and labor between carbon fiber and metal parts. Strength, to some extent offset the advantages of introducing carbon fiber parts

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