Cryogenic experience wanted. Constructive please

Did some investigation regarding the permanent effects of cryogenic treatment of wires, and it is a almost permanent effect. The wire will change slightly from bending it but not change back to its original form. This according to a few local treatment facilities. Guess Ill have to partially eat my words.

As Always, Good Listening

Peter

I don't think paper, pulp, hemp and the like are good candidates for cyro treatment. I could be wrong but from what I've read, metal benefits from it greatly as NASA, the DOD and scores of universities have found out.

I just read that the procedure lessens the repulsion side and strengthens the attraction side of the equation: a changing of their natural nature. It's a good thing for metal since the crystal nature of metal with a greater attraction will hold together tighter, allowing a freer flow of electromagnetic waves. This tightness lessens the "Josephine's Junctions" which interrupt that flow.

I don't think one would want these properties applied to a speaker cone designed to move in and out, get looser from break in, and achieving a final state of elastic play.

I just read this and may be all wet on the matter but it's food for thought. Others here who know more will eventually offer more authoritative advice.

All the best,
Nonoise

There are variables such as time to reach cryo temp, length of time at cryo temp, actual cryo temp and time to return to ambient temp. I believe these variables can affect the end result.

I would seek info from someone who is knowledgeable and experienced with the process because I think it's more complicated than just randomly putting something into "cryo".

It's actually Josephens or Josephons Junctions. Sorry about the gender.

All the best,
Nonoise

"A Josephson junction is made by sandwiching a thin layer of a nonsuperconducting material between two layers of superconducting material. The devices are named after Brian Josephson, who predicted in 1962 that pairs of superconducting electrons could "tunnel" right through the nonsuperconducting barrier from one superconductor to another. He also predicted the exact form of the current and voltage relations for the junction. Experimental work proved that he was right, and Josephson was awarded the 1973 Nobel Prize in Physics for his work."

This is not to say the molecular structure of metals is not changed during cryo, including the transformation of some trace elements to more benign ones and making more homogeneous metals that have been rolled, drawn, bent or hammered, such as musical instruments or wire. For non-audio apps this can result in golf clubs that hit the ball farther, rifles that shoot more accurately, engine parts that last longer, etc.