Argon arc preheating wire welding method

Abstract

A method for preheating the welding wire used for TIG welding in order to increase the speed and quality of welding features that the argon arc is used as the heat source, the output current controllable TIG power supply is electrically connected across the weld gun and the feeding mouth of welding wire, and the argon arc is triggered to preheat the welding wire.

Description

Technical field: [0001] The invention relates to the improvement of the heating method of the traditional TIG welding hot wire. Background technique: [0002] In traditional hot wire TIG welding, the method of resistance heating is often used to heat the welding wire, that is, the welding wire is used as a part of the circuit. When a current flows in it, the welding wire generates resistance heat, so the welding wire is preheated. This process is suitable for welding carbon steel, stainless steel and other materials. These materials have high resistivity and the effect is obvious, but it is difficult to apply to the welding of high conductivity materials such as copper and aluminum. At present, copper and aluminum materials are widely used in national defense and other fields, and the hot wire TIG welding technology suitable for these materials is undoubtedly of great significance to production. Invention content: [0003] In order to solve the problem of hot-wire TIG wel...

AI Technical Summary

Problems solved by technology

The invention adopts the arc protected by argon gas as the heating source to heat the welding wire, and adopts the arc as the heat source, which solves the problem that the traditional resistance heat source cannot heat materials with high conductivity (such as copper and aluminum); , to avoid oxidation of the heated wire

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