Cryo treated axle parts?

[FJ40fiji]

Here's what I know:
Cryogenic treatment involes exposing metals to very cold temperatures (in the -200*c neighborhood). This is done usually with liquid nitrogen either by direct or indirect exposure. Soak times vary, but usually are between one and three days. The principle distigiushable affect is the conversion of retain austenite to martensite. Different alloys respond very differently. Almost all alloys benefiete from this treatment. 1020 and other low- medium grade steels have shown incredible gains in strength, others, like 4340, only slightly. It is no substituion for heat treatment, and does little to correct poor heat treatment.

What I want to know:
What is the composition of a stock birf?
What has Toyota done to treat them to begin with?
Who is running cryo'd birfs?

All of this leading up to, how much good would it really do to
cryo a stock birf?

Also, does anyone know what the hardness of a stock birf is? Does any one have a broken birf (preferably in Fresno) that I can have to cut up and test in a rockwell machine?

 

[peesalot]

I believe the answers you seek can be found within Bobby Long.

 

[Poser]

A call to Bobby Long would answer everything you have asked here, as he has been busting his ass to make something that will stand up to the abuse the fing birf is subjected to in a modified truck for many years....



I guess with the cost and availability of NEW 30 spline Longs, coupled with the fact that they have yet to be broken being flogged and beat to s*** by some of the most abusive folks into this sport, I cannot see the benefit of this study, but to each their own.


Good luck!


-Steve

 

[my64fj40]

Just in case you don't know who they are talking about.....


http://www.longfieldsuperaxles.com/


my64fj40

 

[FJ40fiji]

I guess with the cost and availability of NEW 30 spline Longs, coupled with the fact that they have yet to be broken being flogged and beat to s*** by some of the most abusive folks into this sport, I cannot see the benefit of this study, but to each their own.

I am interested beyond just this. I am a mechanical engineering student, and understanding materials and how they are processed is a big part of that. Axles are the first thing that exposed me to cryogenics but I have been trying to read up on it beyond that lately. It's just a start, don't know where it might take me.

I am aware of Bobby Long, and his long fields, although I have not read a tremendous amount of details on his product. But it does have a good reputation, and an as of yet unbreakable axle is definatly worth paying for. He also offers cryo service for your stock Birf, but I can't help wondering if it is worth the money.

Besides that, I know some body who knows somebody. . . Might be able to get a good deal on getting some stuff treated. Was thinking of tossing all my axle shafts, both diffs, some gun parts, maybe some new U joints, and my drill bits all in at once. Might be able to get that done for around $100. That's alot cheaper than getting long fields, plus I am running the odd ball birf (76 disk conversion, silly me).

 

[peebles24]

I guess with the cost and availability of NEW 30 spline Longs, coupled with the fact that they have yet to be broken being flogged and beat to s*** by some of the most abusive folks into this sport, I cannot see the benefit of this study, but to each their own.

Didn't Woody break a longfield?

 

[woody]

broke an old ring'd and treated longfield, not one of the new Cyro ones....

also broke a Gen2 4340 PolyPerf inner....anything can and will be broken by someone...

runnin the whole 30-spline package now, testing commencing later in April....don't "forsee" issues, but I'm pretty hard on stuff

 

[peebles24]

broke an old ring'd and treated longfield, not one of the new Cyro ones....

also broke a Gen2 4340 PolyPerf inner....anything can and will be broken by someone...

runnin the whole 30-spline package now, testing commencing later in April....don't "forsee" issues, but I'm pretty hard on stuff

You going to test that Easter weekend in Attica with us?

 

[woody]

nope....Easter has always been a family weekend, and I'm not changing that....

HowiePalooza in Rockport IL at the end of the month tho....then GSMTR....maybe a couple local rides in the middle too...lol

 

[Poser]

nope....Easter has always been a family weekend, and I'm not changing that....

So to perpetuate the full-on hijack....


You are going to be over my way around then eh?


You should drag your junk over here...and take the following Monday off....I have an idea.....

 

[woody]

I have Friday off already....course, you also assume my junk will be assembled by then....lol


As far as Cryo work, Dean at Performance Cryogenics did a ring/pinion for me at a great price....so there are multiple options out there (course, I did still manage to break that...but it survived a full year, where the stock coarse stuff was dying every other trip...)

 

[lingo]

nope....Easter has always been a family weekend, and I'm not changing that....

HowiePalooza in Rockport IL at the end of the month tho....then GSMTR....maybe a couple local rides in the middle too...lol

Back to the hi jack. Where are you staying for GSMTR? I would really like to meet the man responsible for me wasting so much time at work.

 

[woody]

https://forum.ih8mud.com/showthread.php?t=84606

 

[Poser]

I have Friday off already....course, you also assume my junk will be assembled by then....lol

Get your s*** together!!!!


So are you saying that I need to come over there?

 

[woody]

depends on what you are planning on....my assembly time won't take long, figger one good weekend to toss it together...

ring me tonite....before friggin 11pm, you ass....

actually, between 5p and 8p, I've got VB at 8:45....

 

[F-junker]

cyro freeze

I have had this process done to numerous gun barrels with great success, while this it was done for a different reason than strength. The process of treatment modifies the steel on a molecular level aligning molecules and providing a stronger material that will react in a consistant manner to heat and stress. When you are trying to achieve consistant accuracy in benchrest rifles this process among others helps to work towards a consistantly accurate rifle barrel.

I know many well drillers who have there rock bits cryo treated, and swear by it's ability to make bit last longer between sharpening and breakage, there are others I know who don't think the process is worth the time and money and just buy new bits on a consistant basis. It is used most frequently in the oil drilling industry for a variety of applications.

I have used this process on older motorcycle and auto cranks and cams as the metalurgy was not what it is today.

Bottom line... Time and money. I think with the availibility and cost effectiveness of chromoly birfs, I would go that route. If you can have factory birfs done for a very reasonable price then go for it. It won't hurt but ultimately they will probably not be as strong as a better suited material such as chromoly birf. IMO anyway.

good luck with your project and your studies. Kenn

 

[4x4Poet]

How about a cryo'd chromo birf, 30-spline Longfield variety?





What? Is there such a thing as overkill?