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In Reply to: RE: a certain lack of common sense posted by unclestu on July 28, 2014 at 13:26:40
I suspect you probably need to read the OP again. His question was very simple: would soldering the connector reverse the effect of cryo? He was NOT asking about repeated soldering and unsoldering.
Follow Ups:
Doh!!!!!!!!!!: Read further, he was specifically asking because he intended to experiment with various ends.
Damn, your reading comprehension is so poor, you shoot off before understanding the issue and before completely understanding what has been written. Then again, you have been very consistent in that regards.
AS I had advised over a year ago, please take the time to really read and then to reread your replies before pushing the send button. You wouldn't find yourself boxed in so often that way
Your NASA study for example:1. is testing the viability of cooling fin fabrication. Hmm different from wire obviously although copper tubes were used.
2. The solder was cyclically cryogenically treated ( necessary for spacecraft), but the joints were NOT removed and repeatedly replaced, as OP would obviously need to do of experimenting with different cables and wire.
3. Page 2: "A major disadvantage when using high tin solders is the brittleness of these solders when subject to temperature at and below their ductile-brittle transition temperature 0f 173.6 K (that's -148 F, yes minus 148)".
4. Table three on page 6: "solder wire connections became brittle and developed cracks resulting in noisy electrical output" No further explanation is given. Apparently from the same table, they tested 63/37 solder and a lead free 95 Sn/5 SB solder and cycled between 77.8 K and 355.6K 9 (-320 F to 180 F). The key is cycling, IMHO.
Edits: 07/30/14
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