Posted 25 March 2003 - 06:52 PM
Posted 26 March 2003 - 07:51 AM
If anyone needs graphite, I know of a 55 gallon drum full that the owner just wants out of his shop. That stuff seems to get everywhere.
Posted 25 March 2003 - 05:48 PM
"Warning! Do NOT use borax for forge welding no matter what all the hobby smiths tell you. Borax will prevent a full weld and your tongs will separate at the weld joint if used. I know, I was one of those beginners. I had to remake nearly every pair of tongs made with borax. Never again! To use EZ-Weld, heat the iron red, coat the weld area with flux, allow a moment for the flux to heat up and stick to the welding site, then put in the fire. Heat with the weld area facing up until almost at full weld heat, rotate weld area downward and finish heat to welding heat, then take out of fire and rap against anvil to shake off excess debris (the flux will stay attached while debris falls off), then place weld joints together and forge. It is that simple...."
Has anyone else had problems with borax? I have used borax in my attempts to weld, but I attribute my lack of success to insufficient heat. Forge welding REALLY interests me, and I would appreciate as much info on it as possible. I want to succeed. Thanks.
Posted 25 March 2003 - 06:14 PM
Look to all your other welding variables.
Perhaps this other fellow just wasn't holding his tongue correctly inbetween his teeth when he was welding. It's probably not the borax at all. ::
Posted 25 March 2003 - 10:31 PM
Regarding sand: If the fire's hot enough, the sand will turn to glass and melt, covering the welding surface of the billet and excluding oxygen. That is the function of flux, to prevent oxygen from binding to the exposed iron and preventing the weld.
What are all the other recipes for flux that folks on this list know of? I know some folks add iron oxide to their mix. Some folks add graphite or carbon powder to prevent decarburization at the weld. I think it would be interesting to see what everyone else is using.
Either way the melted material keeps the scale from forming and keeps the maximum amount of liquid steel present in the weld boundary until your hammer/press forces the liquid from out between the pieces and the melting iron on both sides comes into intimate contact allowing the high temperature chemical bonds to form making a relatively homogenous billet.
Posted 26 March 2003 - 01:45 PM
Borax fumes are carcinogentic.
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