Post by: MDGrand on June 15, 2010, 08:48:34 PM
Post by: 270Shooter on June 15, 2010, 09:00:32 PM
Post by: gasman on June 15, 2010, 10:08:52 PM
Post by: Jamieb on June 16, 2010, 12:29:53 AM
OK, maybe i am ignorant (or just uninformed), but what is the advantage.Cryogenic freezing is supposed to relieve and stress in the metal.
It was pretty popular with some of the custom builders for a while but I haven't heard much about it for a while.
Post by: MikeWalking on June 16, 2010, 01:20:32 AM
I wouldn't spend the money to do it on what was a high quality barrel to begin with.
Post by: demontang on June 16, 2010, 07:56:08 AM
Post by: MikeWalking on June 16, 2010, 08:08:06 AM
Quote
dont know if it would really be worth it on a rifle barrel but a I know it is on axles and ring gears. it makes steel stronger buy relieving the stress and making the structure of the steel more uniform.
Don't know if/which axles and gears are made from heat treated stock but if they are the machining can easily wreck or erase much of the benefit which can be restored by Cryo. Or as you say improve strength on a part that would be hard to heat treat after machining, which can also warp stuff out of tolerance.
Post by: MDGrand on June 16, 2010, 08:18:08 AM
The basics of what I have learned is that many people do this to a barrel that has undergone some use, is a factory stock barrel and usually with a sporter barrel chambered in a magnum caliber.
According to a riflesmith I talked to.. the differences or improvements are not noticeable on an aftermarket high quality barrel like schilen or Kimber, etc. But on a production rifle the differences can be noticeable.
Anyway.. I was curious to see if anyone had done it personally to their factory rifle and had any improvements.
Post by: demontang on June 16, 2010, 12:14:40 PM
From a artical on cryogenic processing
The deep cryogenic tempering process for gears is an inexpensive, one-time, permanent treatment, affecting the entire part, not just the surface. Gears may be new or used, sharp or dull, and reshaping will not destroy the treatment.The process has a number of obvious benefits, including increases in tensile strength, toughness, and stability through the release of internal stresses. The exceptional increase in wear resistivity, generally exceeding 200%, is the greatest benefit.
Post by: MDGrand on June 16, 2010, 12:46:31 PM
Post by: Jekemi on June 16, 2010, 01:15:49 PM
Post by: MDGrand on June 16, 2010, 01:29:44 PM
... according to a riflesmith I know, custom higher end barrels rarely see a benefit from doing this. But factory barrels, can see a marked note of improvement
Post by: demontang on June 16, 2010, 03:11:44 PM
Post by: Cascader74 on July 02, 2010, 09:17:33 PM
http://www.300below.com/firearms-cryo-barrel/ (http://www.300below.com/firearms-cryo-barrel/)
Firearms and guns, rifles and shotguns, tooling and pumps, fleet brake rotors and knives, racing engines and transmissions ... they all respond to deep cryogenic processing and cryogenic tempering. Many materials like centrifugal pumps and hydraulic pumps respond well, too! The benefits range anywhere from 50% to 600% longer life after stress relief and thermal stabilization. Guns such as sniper rifles and tactical rifles shoot with as much as 50% greater accuracy, and 200% longer life. Shotguns have reduced pattern shift from shot-heating by as much as 11" after deep cryogenic processing. Cryo Barrel and Cryo Accurizing were pioneered by CryoTech / 300 Below Inc. Barrels shoot straighter, last longer, and are easier to clean. Our efforts are so unique that a patent was issued for our process. Cryogenic brake rotors last 350% longer, too!