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Galvannealed sheet metal use question
Hi Group,
I was on a car forum and someone is making floor replacement panels out of galvannealed sheet metal. They are press stamping according to their post. Google says; Galvannealed Steel - zinc-iron alloy-coated by the hot-dip process followed by heating the steel to induce diffusion alloying between the molten zinc coating and the steel. The resulting finish is a dull matte surface. Galvannealed steel is very conducive to forming, welding and allows for excellent paint adhesion. Galvannealed steel is the preferred coated steel for use in architectural applications. Specification - ASTM A 653/A 653M, coating designation “A” (A60, A40) My question is, has anyone worked with this and how does it hammer form? It sounds like a good candidate for floor panel replacement and that's what my project is. Appreciate any and all comments. TX Mr fixit Chris |
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welding galvanizing
I avoid welding galvanized metal. Fumes are hazardous.
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Bill Funk |
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Product also known as "Gal-X-C"
It can be bent, folded, hemmed, hammered, wheeled, and shrunk with various machines. Abrasion will remove/damage the soft coating. Simplex_assembled_soldered copy.jpg It can be riveted and soldered. Brazing and welding cause fumes which make people sick, so use fans to blow fresh air across the work and out the door. Sand back 1.5 inches from edges and down to bare steel for tig and gas welding and brazing. The welds can be hammered out. It can be spot welded and arc welded as-is (6013), but fumes are a health hazard and work will need serious clean-up. Galv pipe is welded a lot for hand railings.
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Kent http://www.tinmantech.com "All it takes is a little practical experience to blow the he!! out of a perfectly good theory." --- Lloyd Rosenquist, charter member AWS, 1919. |
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I don't think the health hazard warnings are nearly strong enough. I would use galvanized only if the project REQUIRED it. The floor in a car does not require it. Your car was built without good paint/primer sealer on the unfinished areas and was allowed to be out in the open more than a collector car would be. If you do just a reasonably good job on the rebuild it will outlive you.
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Norm Henderson |
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Quote:
Yup ... seems sort of unnecessary ...
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Kent http://www.tinmantech.com "All it takes is a little practical experience to blow the he!! out of a perfectly good theory." --- Lloyd Rosenquist, charter member AWS, 1919. |
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How was is it possible to we can live up to such a long age. Last week, I was talking to an old metallshaper he have 84 years and still working a little. I got some good advice. We talked about the galvanized sheet metal and its welding. They did it normally. They were tugging their throats a little over the weekend, but they did not die.
Stress and fear it is sure death. Well use ventilation or work outdoors. Yes it is harmful, but more damage is done by the TIG and its gas. The galvanized sheet can be used very well for spot welding. Clean work.
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Jaroslav |
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