Cryogenic treatment of a coil winding.......-300 degrees

[gitterdug]

I became aware of the cryogenic treatment of gun barrels about 15 years ago. By treating a barrel of a gun with supercold tempering at -300 plus degrees, the molecular structure of metal is realigned and destressed. I am greatly simplifying the process, but in essence, that is what occurs. The molecules line up end to end. It is a permanent treatment and is now used for many different metals.

How does this relate to metal detecting? Ever since I became aware of it, I have wondered if the treatment of the coil windings would benefit from such a treatment. To my non-scientific, but gut fueled thinking.....realigned molecules within the wiring itself would assist in the flow of electrons from the machine, and perhaps increase the size of the field developed by the coil. I am going to post this to several forums here for input.

I went to the website here: http://www.300below.com/ , and asked them that question. I thought it would be a subject perhaps for consideration here as well. I know there are some engineers on here, and this might be a short lived topic, but on the other hand, in my now 38 years detecting, I have never seen the subject raised. So, ok, tell me why or why not realigning the molecular structure of the wiring would or wouldn't enhance the size of the magnetic field, of speed of the signal.

IF I am totally off my rocker, just tell me, and we can move on.

HH

Dennis, with a BRRRRRRRRRight idea!

 

[OldBeechnut]

I remembered this post From the old masters, Eric, BB, Vlad
http://www.findmall.com/read.php?34,137278,137278#msg-137278

I like these






COOL COIL & CABLE CO.

Eric Foster

Date: March 31, 2005 04:46PM



Intrigued by the outstanding success of cryogenically treated audio speaker cables, interconnects and power cords. I have been investigating how this technology can benefit metal detectors. Basically, the technology involves deep cycle cryogenic treatment, at temperatures as low as 200F, and over a period of days rather than hours. This treatment repairs defects in the crystal structure of non-ferrous conductors which otherwise can give rise to barriers to a smooth electron flow, plus unwanted diode effects.
Unable to travel to Frozen Solid Audio, who pioneered this technique, I recently visited Prof. Lilao, Head of the Oxford Cryogenics Facility, armed with a couple of search coils with cables and connectors. He agreed to the use of one of their computer controlled chambers to conduct some initial experiments. The coils were collected last weekend after their period of cryogenic de-stressing and internal molecular bonding.
Testing over the past couple of days of a 11in Goldquest mono, and a 11in DD, showed some distinctive improvements in performance. Detection ranges were up by 10 20% and em noise levels were greatly reduced. The lower electromagnetic noise is thought to be due to the shielding foil now being more effective, as the crystal bonds are now much tighter, leaving less inter-molecular space for interfering signals to pass through. In fact I took a separate reel of the lead foil tape for cryogenic treatment and will be doing further detailed em tests.
It is early days yet, but if this venture is as successful as it has been for audio cables, you might see a separate company set up for DCT (Deep Cryogenic Treatment) of detector coils, cables, headphones, and even control boxes. Frozen Solid say that even the electronics can benefit greatly from this treatment. Imagine putting your GP3000 in deep freeze for a couple of days and ending up with a performance that far exceeds the latest offering, in detection range and noise immunity, for a couple of hundred bucks outlay.
If the shielding tests work out, then I might also start supplying Polar Foil to other manufacturers.
Eric.

Re: COOL COIL & CABLE CO.

Carl-NC
Date: April 01, 2005 06:52AM



I have emptied my freezer of all the nonsensical food stuff, and have filled it with cable and spools of magnet wire. I even added my PCBs and rolls of solder for good measure. Hopefully, 28F for a few months will be good as -200F for a few days. Thanks for the tip!
- Carl

 

[Pawnbroker_Bob]

April Fools!