In Reply to: RE: Pop Quiz - Is stranded cable directional? posted by jea48 on February 25, 2014 at 11:28:22:
It is interesting to visit certain cable manufacturers website. MWS is a good one: they have photos of the wire drawing process and helps better understand the mechanical nature of the manufacture. In addition most stranded wire is spooled and then various spools are combined to make the finished wire, so essentially the wire is unidirectional.
One must also take into consideration cross contamination. Dies used for silver for example and then used for sopper will carry traces of the silver. In addition wire as it is being drawn is lubricated, with something akin to cutting fluid. You can clearly see this in a few of the MWS machines where the wire under manufacture goes through a lubricating bath. that surely imposes impurities and further probably affects the grain structure.
Some wire manufacturers use jeweled dies (diamond or Sapphire) as little or no lubrication is needed and the jeweled die can impart a mirror like finish on the metal wire. Try looking at standard wire under a microscope, the striations from the die are clearly visible for the most part. Meticulous manufacturers maintain separate dies for different metals being drawn. That being said most outsource their wire from one the few wire giants: Belden, etc.
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Follow Ups
- RE Is stranded cable directional? - unclestu 17:09:25 02/27/14 (23)
- RE: RE Is stranded cable directional? - b.l.zeebub 13:01:18 02/28/14 (22)
- Questions? - unclestu 14:44:10 02/28/14 (20)
- RE: Questions? - b.l.zeebub 15:04:19 02/28/14 (19)
- RE: Questions? - jea48 22:50:28 02/28/14 (4)
- RE: Questions? - b.l.zeebub 04:44:01 03/01/14 (3)
- Strawman alert! - geoffkait 07:26:10 03/01/14 (2)
- RE: Strawman alert! - Tony Lauck 09:58:02 03/01/14 (1)
- RE: Strawman alert! - geoffkait 11:26:43 03/01/14 (0)
- RE: Questions? - rick_m 17:06:56 02/28/14 (13)
- RE: Questions? - Tony Lauck 09:19:26 03/01/14 (1)
- RE: Questions? - rick_m 13:22:51 03/01/14 (0)
- RE: Subtlety - geoffkait 17:16:09 02/28/14 (10)
- RE: Subtlety - rick_m 17:26:55 02/28/14 (9)
- RE: "Have you tried to sort it out at all?" - geoffkait 17:51:38 02/28/14 (8)
- RE: "Have you tried to sort it out at all?" - rick_m 15:49:46 03/01/14 (7)
- RE: "Have you tried to sort it out at all?" - geoffkait 17:28:24 03/01/14 (6)
- RE: "Have you tried to sort it out at all?" - rick_m 17:44:48 03/01/14 (5)
- RE: "Have you tried to sort it out at all?" - jea48 19:38:28 03/01/14 (3)
- RE: "Have you tried to sort it out at all?" - rick_m 23:42:41 03/01/14 (2)
- RE: "Have you tried to sort it out at all?" - jea48 07:04:07 03/02/14 (1)
- RE: "Have you tried to sort it out at all?" - rick_m 08:06:28 03/02/14 (0)
- RE: "Have you tried to sort it out at all?" - geoffkait 18:01:47 03/01/14 (0)
- RE: RE Is stranded cable directional? - geoffkait 13:47:35 02/28/14 (0)