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rolling mill questions
Hello all,
I've been a lost-wax caster for over thirty years, and I never really learned to use a rolling mill. I never even bought one, because I could always figure out how to get along without it. I have several questions for you bench experts concerning rolling gold wire. For an upcoming line, I need long bands of 18K yellow gold to then have disks punched out, 1/10th. of a millimetre thick and 8mm in diameter. How many operations/reductions am I looking at to roll down a 1.2mm wire to a 0.1mm x 10mm ribbon? Is this too thin to be done reasonably? Could I do this, with good repeatability (thickness-wise I'd like to stay between 0.09mm and 0.11mm), using an off the shelf rolling mill? Do standard mills have well polished rollers, and will I have a problem getting an easy polish on the ribbon after the final reduction? I'm hoping to need about 10 meters a year, lets say 1000 pieces. What are the do's and don'ts for doing these myself? Perhaps I'd be better off getting them made? I have kilns and temp. control for annealing. That's no problem. I'd appreciate any and all ideas, comments, etc. B.RANDALL http://www.srdfrance.com |
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