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I Forge Iron

Pattern welds coming apart


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Hi friends, I recently watched a mokume-gane ring video wherein the stock material was cut into a washer shape and then formed into a ring by tapping it down on a ring mandrel. I made two rings this way by forging 3/8" steel washers down over a bull pin and they came out okay I guess. (See pics below) However the washer I made from a piece of pattern welded steel (15n20 and 1095) broke at the welds when I began to bend the washer around the punch even though I had the material to a bright red heat. The welds seemed very tight and showed no cracks or separation prior to trying to bend it.

What am I doing wrong and is it possible to make the rings this way at all?



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