Combined material of aluminum oxide fringing copper and chromium-copper alloy and its producing method and use

Abstract

This invention relates to a composite material of alumina dispersion copper and chrome-copper alloy, its manufacturing method and application, in which, the composite material is composed of alumina dispersion copper at the core and chrome-copper alloy surrounding the core, the volume percentage of the copper is 10-70% and that of the alloy is 30-90%. The manufacturing method includes: shaping them up by a thermal extruding machine, in which, when squeezing, a glass lubricated composite material blank and an extruding drum are used to meet the section ratio of them after extruding, and conductive nozzles and electrode caps used in welding machine are produced at low price, high accuracy and high material rate due to the high temperature strength and high conductivity of the material, dispersion copper used at part of the electric contact points of the core and chrome-copper as the blank outside.

Description

Technical field [0001] The invention relates to a composite material of alumina dispersed copper and chromium-copper alloy, a manufacturing method thereof, and application of conductive nozzles and electrode caps for manufacturing welding machines. Background technique [0002] A small amount of chromium is added to copper, and the chromium-copper after solution treatment shows high strength and conductivity. Therefore, it is used as a material for electrical contacts such as contact tips for welding machines and spot welding heads. [0003] There are various forms of contact tips and electrode caps for welding machines. The bullet-shaped contact tip (1) used in the arc welding machine (MGI or carbon dioxide shielded welding machine, etc.) shown in Figure 14: the central shaft has a through hole (2), and the welding wire (3) is sent out through the through hole (2) ) Of electrode consumables. Between the contact tip (1) and its outer jacket (4), inert gas (5) such as carbon dioxi...

AI Technical Summary

Problems solved by technology

In addition, aluminum oxide is dispersed in the metal, and the manufacturing process is complicated, so the price is three times that of chrome copper.

[0006] Although alumina dispersed copper has superior high-temperature characteristics, its manufacturing process is complicated, the material is expensive, and the forming processability of contact tips and spot welding tips is poor.

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