Mig Welding Copper

The silicon bronze wire heating requirements aren t enough to melt the copper base.

Mig welding copper.

Mig welding was developed in the 1940 s and 60 years later the general principle is still very much the same. Silicon bronze is a kind of hybrid mig welding brazing technique. Use the proper gas ratio. Lagging the item being welded with thermal blankets is essential as is the provision of adequate screening from the very powerful tig or mig arc.

Mig brazing may not be a familiar process to many but it is no stranger in the welding world. As a general rule of thumb copper under 2 mm should have argon gas and up to 160 a applied. You can use a mig welder and gun to essentially braze the materials together. I ordered a two pound spool just to try it.

Mig brazing is a welding process that has been around for years and is gaining popularity with professionals and hobbyists alike due to the benefits it can offer especially with silicon bronze filler metal. It looks kind of yellow. In welding copper sheets the heat is conducted away from the welding zone so rapidly that it is difficult to bring the temperature up to the fusion point. 152 4 to 304 8 mm away from the weld.

Depending on if you are using tig tungsten inert gas or mig metal inert gas and the thickness of your copper you will need to adjust the ratio of your gas and temperature. I might buy some silicon bronze wire to try that. When welding thick copper with preheats of over 250 c and welding currents of more than 350 amps then the health and safety of the welder and personnel working in the vicinity must be considered. It is often necessary to raise the temperature level of the sheet in an area 6 0 to 12 0 in.

He said most guys mig welding copper use silicon bronze wire but the color doesn t match. Using mig equipment and silicon bronze welding wire makes joining copper an easier more repeatable quality process. 100 de ox copper wire is available but pricey.