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 |
#12
|
|||
|
|||
Silver supplier question
"Bob" wrote in message ... On May 23, 7:17=A0pm, "Paul K. Dickman" wrote: I talked to a couple of my suppliers who have 12" rolls and sell Argentium= . They told me they could reroll some materials but this wasn't one of them.= I was only talking to customer service reps, not the techs. So I do not kn= ow if =A0a licensing issue, a contamination issue or whether there is some th= ing intrinsic in the alloy that precludes cross rolling. The reflectors do not have any compound curves. I could stretch it in the hammer work, but I would have to add at least 1/3 to the area. That would be a whole lot of hammering. Paul K. Dickman Interesting, but puzzling. You would think, if the material can be hammer-forged, it could also be rolled.... Do you know anyone with a power hammer? That, at least, might make the stretching bearable. Regard, Bob Actually, hammering is much easier on the metal's structure than rolling. The grain distortion from hammering is much more diffuse, and the metal has time to equalize the tension between hammer blows. Rolling puts all the distortion in one direction. It tends to find week spots in the metal, and magnify them by squeezing them from one end of the sheet to the other. As far as Argentium, I never got an answer from the service reps. I think that it is much more likely, that the metal goes through a final proprietary annealing step, and the original licensor feels that this is necessary to insure product quality. The secondary sellers are not able to perform this step and are not supposed to reroll. Paul K. Dickman |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Oil Painting Supplier China Hand Painted Oil Painting Supplier | goldappleart | Sewing | 0 | April 18th 08 04:12 PM |
Silver question. | George | Jewelry | 6 | November 11th 07 07:43 PM |
935 Silver wire supplier | Mizz Patty | Jewelry | 21 | February 26th 07 05:58 AM |