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| Blu Falc |
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If so what did you get done and do you know if it is actually stronger?
for those wondering what this process is- The metal parts are heat tempered then placed in a big esky with nitrogen and frozen, then slowly brought back up to room temp. This converts some of the impure s**t in the metal and it is supposed to make the item 15% stronger. supposed to anyway That was a very basic rundown so the thread isnt filled with "watsit?" posts I put it in the turbo section because most people using this would use it in a turbo application i assume but feel free to move it F.A.G's |
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| fordfreak ef |
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i think "ZOOM" or "Street machine" ran an article on this process a bout a year ago... can do pistons,blocks, heads,cams,valves.. i do believe the process make items more stronger and durable...
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| GTBob |
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They used ot pack axles in ice and freeze them and then slowly bring them back to room temp after they had been welded it is suppesed to neutralise any heat stress after the welding process
_________________ Rotten Old Revhead!!! XW GTHO + EF ex cop car (exractors 2.5 cat back zorst !6" Simmons K&N +airbox mods Lowered with Bilstein shocks+Whiteline Bars NEXT THING Swap HO for GTP or Ferrari! |
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| elrob |
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correct me if im wrong but wasnt the figure 300%stronger
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| Blu Falc |
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actually 300% strongers sounds right, i do have the article here somewhere but i was wanting personal experiances rather than a mag write up
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| ltd351T |
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I doubt 300% stronger, maybe 30%, if it were 300% all the race teams would be using cryo treated std parts instead of expensive stuff.
From my interpretation cryo treated parts may have a higher yield/failure as it helps to relieve any stressed areas, ie 1000hp safe rods might be 1200hp safe after cryo, or roller valve springs might last 20% longer with cryo treatment. The point at which you might use cryo treatment would depend upon your budget, my point is that if it costs heaps you might be better off upgrading the part as opposed to treating it? |
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| Blu Falc |
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$5 a kilo wont break the bank for anyone unless you want to get the block done. I want to use this process but would like confirmation that its not a s**t scam or a 1% sucess thing
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| ltd351T |
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5$ a kilo sounds cheap I always thought it would cost more than that.
Do you have a contact number and details of the place that quoted you that price? |
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| Blu Falc |
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summary of the article- UP TO 300% stronger, resistance to micro cracking, acts on the whole item as opposed to nitriding whick only works on the first few microns. major improvement is achived by reliving residual stresses in the metal.
contact- The LSW group (02) 9773 0647 i can confirm the article states $5/kg, so a set of conrods would cost ~$25, pistons~$10, valves would cost stuff all probably $5 with springs |
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| Cruizin_Central |
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Heyo,
If making the part really cold then slow bringing it upto room temp is all tehre is to it, u could do it yourself. Get some dry ice (about $3 a kilo) and chuck your parts in a esky with the dry ice in it. as the ice melts it slowly bring up the temp of the part. only prob is that dry is isn't as cold as liquid nitrogen. interesting idea though... Rene. |
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| Blu Falc |
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{USERNAME} wrote: Heyo,
If making the part really cold then slow bringing it upto room temp is all tehre is to it, u could do it yourself. Get some dry ice (about $3 a kilo) and chuck your parts in a esky with the dry ice in it. as the ice melts it slowly bring up the temp of the part. only prob is that dry is isn't as cold as liquid nitrogen. interesting idea though... Rene. dry ice is around -100 * C not -300*C isnt it? (my memory can be dodgy) Also some stuff needs to be heat tempered before hand. It also means you have to cart the dry ice from them to your place, I would rather just send the stuff to them because it isnt expensive and its a proper job |
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| Cruizin_Central |
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Heyo,
I wasn't serious about doing it yourself. Dry ice is -79'C and liquid nitrogen is 196'C so its pretty far off, also dry ice being in chunks wont transfer the coldness to the part anywhere near as well as a liquid. trivia: Absolute zero is -273'C and nothign can go colder. cya Rene. |
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| Blu Falc |
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{USERNAME} wrote: Heyo,
I wasn't serious about doing it yourself. Dry ice is -79'C and liquid nitrogen is 196'C so its pretty far off, also dry ice being in chunks wont transfer the coldness to the part anywhere near as well as a liquid. trivia: Absolute zero is -273'C and nothign can go colder. cya Rene. now i remeber, all the yr 11 physics lessons are flooding back. so far scientists hvae been ables to come within a few hundredths of a degree to -273'C |
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| blade1982 |
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When we had trouble designing crankshaft gears for out top fuel dragster we alsways broke these gears. then we tryed this. and we havent proken one since. would recomend this.
_________________ Petrol Is for cleaning Parts
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| Blu Falc |
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{USERNAME} wrote: When we had trouble designing crankshaft gears for out top fuel dragster we alsways broke these gears. then we tryed this. and we havent proken one since. would recomend this.
I'm definately getting conrods and pistons done, I think even a 20% gain would be worth it |
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