If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#7
|
|||
|
|||
rolling mill questions
br wrote:
I doubt that "wobbles and bends" would be a big problem as the disks will be hand-punched. You may not have trouble because of "wobbles and bends" but you'll have plenty of other problems. You better have a damn good punch for that, because if you don't you are going to have a hell of a time punching circles out of .1 mm thick sheet. That is not even sheet anymore, but almost foil. If you punch is not made to a very tight tolerance, you will drag the sheet into the punch and you will not get a clean cut. I have circle cutters, that have decent tolerances, and I cannot cut anything very clean that is thinner than .3 mm. For larger circles I make my own punches, that cut just fine. I leave them unhardened, because it doesn't really matter for gold, if they are hard or not, and I do not have to cut thousands of circles. Am I correct in assuming that the "straightness" of the ribbon depends on the parallelism of the two rollers? Concerning a polished surface (only one side needs to be polished); would it be feasible to use a long strip of highly polished spring steel, run through the mill at the same time as the gold ribbon, to polish the surface? That is the single best way to destroy your rolling mill in short order! (Well, maybe not neutralizing your sheet well from acid after pickling is a better way) If I'd see you do that in my shop, I'd kick you out the door faster than you can say "Oh ****!" I have seen idiots doing stuff like that with bunched up steel wire to create an "interesting" rolled pattern on sheet. They ended up with the patterns in the gold and silver, as well as on the rolls! Rolls of mills are usually only case hardened, which hardens only a very thin outer layer of the rolls. -- Abrasha http://www.abrasha.com |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Rolling Mill | Kendall Davies | Jewelry | 13 | July 17th 12 06:07 PM |
I just picked up a ROLLING MILL , now I have some questions ! | mtnrabbit | Jewelry | 3 | November 9th 05 09:02 AM |
Slitting machine, Slitting, Rolling mill, Wire Flattening Mill, Sheet Leveler, Section Leveler, Scalping Machine, Brush Machine, coiler, decoiler, recoiler, 4 Hi, 6 Hi, 4 High, 6 High, Rolling mill, Wire Flattening Mill, Polishing Machine, Rewinding | korak | Marketplace | 0 | December 14th 03 05:52 PM |
Slitting machine, Slitting, Rolling mill, Wire Flattening Mill, Sheet Leveler, Section Leveler, Scalping Machine, Brush Machine, coiler, decoiler, recoiler, 4 Hi, 6 Hi, 4 High, 6 High, Rolling mill, Wire Flattening Mill, Polishing Machine, Rewinding | korak | Quilting | 0 | December 14th 03 05:52 PM |
Rolling mill success! | HoyoD | Jewelry | 3 | November 9th 03 04:50 AM |