Avadon Posted January 8, 2009 Share Posted January 8, 2009 I just forged a little aluminum on my anvil and I mean a very little aluminum and I noticed the aluminum leaves what almost looks like light crayon marks out of aluminum. I suppose it's slag of some sort? How does one get this off? Or does one even worry about it? Seems like mixing ferrous and non-ferrous is a bad idea? :confused: Quote Link to comment Share on other sites More sharing options...
dablacksmith Posted January 8, 2009 Share Posted January 8, 2009 this si the same effect as when you brush ironwork with a brass wire brush ... its a little of the aluminum transfering it will wear off fairly quickly or you can remove it with a abrasive .I wouldnt worry about it unless your doing a lot of forge welding it might cause problems if you have a lot of it but probably not... have fun Quote Link to comment Share on other sites More sharing options...
Frosty Posted January 8, 2009 Share Posted January 8, 2009 A wire brush or steel wool if it bothers you, a little al on the anvil doesn't bother me. Frosty Quote Link to comment Share on other sites More sharing options...
Avadon Posted January 8, 2009 Author Share Posted January 8, 2009 okay thanks, i was just worried about putting dissimilar metals into the grain of the metal. In aircraft mechanics the big scare was always about using tooling on dissimilar metals because of dissimilar metal corrosion. Guess that's no real problem here. Quote Link to comment Share on other sites More sharing options...
Frosty Posted January 8, 2009 Share Posted January 8, 2009 When you're building or working on an aircraft you have to be careful of anything that can affect safety. Al is virtually always the one to suffer where electrolysis is at work and you really don't want pieces falling off in flight. In this case the al will oxidize and buff off in use. One of IFI's subscribers, Bill Roberts, routinely forges al cold with no problems from scuffed off al. Frosty Quote Link to comment Share on other sites More sharing options...
ornametalsmith Posted February 3, 2009 Share Posted February 3, 2009 One of IFI's subscribers, Bill Roberts, routinely forges al cold with no problems from scuffed off al. Frosty forge it hot and cold, fwiw. I've never had a problem going from forging non ferrous to ferrous.....on the same anvil. Not sure how it would effect forge welds, though. 2 centavos :cool: Quote Link to comment Share on other sites More sharing options...
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