Brazing Galvanized Sheet Metal

Cast iron galvanized nickel steel malleable iron.

Brazing galvanized sheet metal.

Joining galvanized steel is normally done with one of a list of possible processes depending on application requirements. Steel is often galvanized by dipping it into a zinc solution. Then clean the surfaces using soapy water or a degreaser. Because the galvanized metal is designed to be resistant to outside harm soldering pieces of steel that have been galvanized can pose a problem if done improperly.

Brazing soldering galvanized sheetmetal techniques. Thurmond miller bobcat 3 phase miller suitcase x treme 12vs wire feeder for the bobcat with m 25 300a 045 gun bernard 400a 5 64 wire mig gun. Use the wire brush or emery cloth to scuff the surface of the metal. Bonding galvanized sheet metal to itself 2004.

Brazing is another method of soldering by definition. The usefulness of zinc coatings for rust prevention depends on the much slower corrosion rate of zinc as compared to that of steel. Work at your own risk. Brazing is a technique for joining pieces of metal together by filling the join between the two metal pieces with a molten intermediary metal.

Bernzomatic al3 aluminum brazing welding rods. 6 4 1 the oxyacetylene torch is the heat source most commonly used for brazing. Brazing galvanized pipe can be easily if the correct steps are followed. Silicon bronze rod is great for galvanized sheet metal ercusi a.

Position the metal as desired. Zinc is electrochemically more reactive than steel. I always found brazing easier. What i re learned from my youth that i had forgot was the.

You don t want adhesion type sticking that is a cold joint that doesn t bond the two metals together with a metal that melts at a lower temp. Brazing is distinguished from welding because it uses an intermediary material usually a copper zinc alloy to join the two metal pieces rather than melting the pieces. A neutral to slightly oxidizing flame is employed in conjunction with a filler rod of 60 cu 40 zn alloy rbcuzn a as specified in aws a 5 8 to braze galvanized steel. When heated or burned for the purposes of brazing poisonous and potentially lethal fumes are created.

This process protects the surfaces of the steel from rust. Furthermore zinc provides electrolytic protection because it is anodic to iron.