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I make replicas of historical armour. When I work in steel, I have the option of welding plates to fabricate complex forms faster - the welds can be ground then forged into invisibility. I don't have the ability to do that with my copper-alloy projects though, because I don't know what to use for filler metal that isn't going to show up as a different colour when the part is sanded and polished. I make the most use of c220 commercial bronze (actually a low-zinc brass) and c510 phosphor bronze sheet in thicknesses of about 0.7 to 2 mm. Any recommendations? I have a gas welding setup and a flux-core mig welder, but I would still be interested to hear if there are solutions to my problem that I am not equipped to implement.-Jeffrey HildebrandtRoyal Oak Armoury Website
Reply:Many times strips of the parent material is cut and used for filler to try and color match. However not all alloys will weld well. One guy I know who does bronze castings does all his repairs using tig. Depending on the alloy of the item being cast, some times he uses the scrap parent material as his filler..No government ever voluntarily reduces itself in size. Government programs, once launched, never disappear. Actually, a government bureau is the nearest thing to eternal life we'll ever see on this earth! Ronald Reagan
Reply:Originally Posted by DSWMany times strips of the parent material is cut and used for filler to try and color match. However not all alloys will weld well.
Reply:One way to solve the problem is to switch to some other base material. Silicon bronze can be welded with silicon bronze rod with good color match. Similarly, copper can be welded with deoxidized copper rod with good color match. Brasses and bronzes are often troublesome to weld, there are so many different alloys. Some have zinc in them. Zinc is not only toxic, but it burns off during welding, changing the chemical composition and presumably the color.I frequently tig weld copper, and I understand that silicon bronze is even easier to weld.RichardSculptures in copper and other metalshttp://www.fergusonsculpture.comSyncrowave 200 Millermatic 211Readywelder spoolgunHypertherm 600 plasma cutterThermal Arc GMS300 Victor OA torchHomemade Blacksmith propane forge
Reply:Originally Posted by rafergusonOne way to solve the problem is to switch to some other base material. Silicon bronze can be welded with silicon bronze rod with good color match. Similarly, copper can be welded with deoxidized copper rod with good color match. Brasses and bronzes are often troublesome to weld, there are so many different alloys. Some have zinc in them. Zinc is not only toxic, but it burns off during welding, changing the chemical composition and presumably the color.I frequently tig weld copper, and I understand that silicon bronze is even easier to weld.Richard
Reply:MIG may work with phosphor bronze but will work poorly if at all with commercial bronze. Arc processes do not work well with alloys containing zinc.Oxy-acetylene is a good fit for what you are doing. For commercial bronze you can try either phosphor bronze or what is called "low-fuming bronze" as filler metals. Try some of each on some scrap and see which has the best color match.JohnA few weldersA lot of hammersA whole lot of C-clamps
Reply:If you get a chance, post up some picts of your work. I'm sure plenty of guys here would love to see what you do..No government ever voluntarily reduces itself in size. Government programs, once launched, never disappear. Actually, a government bureau is the nearest thing to eternal life we'll ever see on this earth! Ronald Reagan
Reply:Originally Posted by Silicon-basedMIG may work with phosphor bronze but will work poorly if at all with commercial bronze. Arc processes do not work well with alloys containing zinc.Oxy-acetylene is a good fit for what you are doing. For commercial bronze you can try either phosphor bronze or what is called "low-fuming bronze" as filler metals. Try some of each on some scrap and see which has the best color match.John
Reply:You are one talented man! That's nice work right there! Thanks for sharing.
Reply:Could you brush plate to cover the welds?---Meltedmetal
Reply:Originally Posted by MeltedmetalCould you brush plate to cover the welds?---Meltedmetal
Reply:I think it would depend on how thick it was applied and what metal. There does seem to be some nasty chemicals involved though. ---Meltedmetal
Reply:Originally Posted by MeltedmetalI think it would depend on how thick it was applied and what metal. There does seem to be some nasty chemicals involved though. ---Meltedmetal |
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发表于 2021-8-31 23:07:15