Blacksmith and Metalworking Forum
This is a discussion on forge welding within the Blacksmithin' forums, part of the Blacksmithing category; im not trying to make domascus or any thing just to weld correct me if i am wrong but i ...
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im not trying to make domascus or any thing just to weld correct me if i am wrong but i beleve the process i beleve is heat the metal scarf, brush, fold ,flux next heat poke with a pointed round bar to see if it sticks in the forge pull it out, quick burch sweep ,few light hits, flux next heat somoth out the weld 20 mule team for flux i cant get the metal to stick and it is rather annoying any help would be greatly apprecated |
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Is your metal hot enough? A good friend of mine, Bob Curtis from Alb. NM, showed me the easiest way to know if your metal is hot enough....look for 3-4 starburst sparks, pull part from fire, sling 'gruddu' from part, lay on anvil and strike. Remember, you are not trying to move metal as in forging when you strike so these will be lighter hits. Usually takes 3 heats to finish the weld. I have done this each time I make a weld with good success.
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What's scarfing? The (rather stupid) kidsmith, Dave Custer
__________________ Proud member of the KAOA! "It's not the fact that you're dead that counts but only how did you die." http://www.custerfamilyfarm.com |
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rich- fuel is coal thanks glen thomas- i have tried that but it dosent seem to make a diffrence dave- scarfingthe bar is rounding 2 corners on one side of a square bar so the flux gets in all the way through the weld and is expelled during the weld |
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This book is free on the internet. Lots of good information. Blacksmith Fundamentals |
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First, I am no expert. I was taught to forge weld at Tillers International. After the metal is properly formed, bring the metal to a red heat. Remove from fire,wire brush,apply plenty of 20 mule team for flux,then bring up to welding temp. I have not been taught to poke the metal to identify welding temp, so I have no comment on that. I was told to observe the metal, when it becomes the same color as the fire, it is ready. When you pull the iron out of the fire, you have to get it on the anvil immediatly and get it welded. This is a very small window of opportunity. You do not stop and wire brush the metal when it is at welding temp, the only cleaning that is done at this point is maybe a quick tap on the anvil to knock off a piece of coke that is stuck to the metal. If you are welding two separate pieces together, don't wast time perfectly aligning the pieces,you don't have that kind of time. Get one piece on top of the other and hit it. You can adjust and straighten things later. I strongly suggest practicing forge welding a loop so you only have to manage one piece of iron. I was taught to do this in during a two day Blacksmithing I class, and I was successful in class. It was six months or so before I aquired an anvil, and a small 18" rivet forge. I was unable to weld at home at this point. When I returned to Tillers International for BlacksmithingII I asked for more instruction. I was told that rivet forges do not work well for welding because they are so shallow. You must exclude oxyogen from the metal. If you do not have at least a few inches of coal between your tuyere and your metal, you will introduce oxyogen. You must have clean coke above and below your iron. The anvil must be close by or it will be too late to weld. Small pieces cool even more quickly. I was told that some smiths lay a piece of railroad iron to use as an anvil right on the forge table when welding small pieces so thay can get to it before it is too late to weld. With this new info, I went and heaped my forge extra high with coal, drug my anvil out in the yard next to the forge, and was successfully welding the first time. |
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I think forge welding is one area where experience is the best teacher (do not ignore advice, though.) I was able to quickly learn almost every other smithing technique by reading descriptions, and trying it a few times; NOT FORGE WELDING! I had to try it many times, and I am getting better at it each time. I could NOT do it when I started, and I can now usually do it when I try. This may be why everyone's techniques' have subtle variations; everyone basically has to try it for themselves, and develop personal guidelines as they go. (I have also learned that I have better luck in certain circumstances) DO NOT GIVE UP; keep trying. I find forge welding tremendously satisfying when successful; in part because of the work I had to put in to learn.
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