What is the purpose of heat treating CVs?
why do they fail and crack?
if they are tempered they will become more brittle.
if they are stress relieved they will become softer.
SZ
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| Author: | Sneakyzook [ Fri Aug 31, 2007 10:29 pm ] |
| Post subject: | Heat treated CVs |
What is the purpose of heat treating CVs?
why do they fail and crack?
if they are tempered they will become more brittle.
if they are stress relieved they will become softer.
SZ |
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| Author: | Kymb0 [ Sat Sep 01, 2007 12:50 am ] |
| Post subject: | Re: Heat treated CVs |
There are a couple of places that have been very successful at heat treating Hilux cvs. There seems to be a lot of sience involved but when we tried it with Sierra ones it failed abysmally. I blue my first one turning around on grass. If blowing cv's is your problem then I would recommend you look into birfield rings. They are a reinforcing ring which fits around the outside of the cup of the cv. |
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| Author: | steve [ Sat Sep 01, 2007 1:07 am ] |
| Post subject: | Re: Heat treated CVs |
i don't know anything about em... damien seems to have it sussed? http://www.yuri4x4.com/cv_joints.php met him at xrcc, really nice fella, very helpfull with advice and info. |
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| Author: | royce [ Sat Sep 01, 2007 2:31 am ] |
| Post subject: | Re: Heat treated CVs |
they break by swelling, CV's by design take the twisting load and force it outwards a bit so its stretching the metal, eventually it cracks you can bet a CV the cracks the inner spider was lose on the splines so it gets forced open there, if it cracks the outer it was probably lose around the balls what the rings do is add metal at a weak point and also shrink the whole CV top make it tighter, so its hard to get that outward movement Yuri's (and a lot of others) rely on that ring making the outer stronger and shrinking it all, I think the heat treating may be more normalising after welding to bring it back to even strength, though harder would be harder to stretch so might be harder to then crack (bit like its hard to bend a file but easy to snap) |
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| Author: | Sneakyzook [ Sat Sep 01, 2007 8:21 pm ] |
| Post subject: | Re: Heat treated CVs |
Thanks Kymbo Royce and Steve. I think Yuris deal sounds pretty fair!!, we have a couple of pretty serious heat treatment vaccuum furnaces at work, ill get someone to take me thru the process. cheers 
SZ |
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| Author: | steve [ Sat Sep 01, 2007 10:56 pm ] |
| Post subject: | Re: Heat treated CVs |
Sneakyzook wrote: ill get someone to take me thru the process.
and then you can be our source for heat treated CVs 
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| Author: | Bruce [ Sat Sep 01, 2007 11:05 pm ] |
| Post subject: | Re: Heat treated CVs |
Yep I like that Idea Steve. On ya SZ 
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| Author: | royce [ Sun Sep 02, 2007 12:59 am ] |
| Post subject: | Re: Heat treated CVs |
Sneakyzook wrote: furnaces at work Sneakyzook wrote: ill get someone to take me thru the process.
I think it might be better if somebody jsut tells you what happens, going through it may get a little hot 
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