Can any one explain what cryogenically treating the engine block is and why its important???
Computer controlled to -300, depending on density, average soak time is 40-44hrs. Heat treat after to 300+ at a controlled rate.Three important questions to ask:
What is the ramp rate for the cryo process?
What is the soak time?
What post-cryo processing is performed?
Can you cryo a block that has already been filled?
I don't think that would be a good idea. I imagine, the fill material is not stable to the lower temperature and would have a different coefficient of thermal expansion. The difference in CTE would likely result in damage to the fill areas (fracturing/breakeage). If you wanted to get a block Cryo'd, do it before machine work and filling.Do you cryo before or after machine work? You can have your parts cryo'd before or after machine work. It will not affect any gains from cryo before or after.
thanks
Do people generally charge by the piece when doing this process? Most places that run a 300 below system charge by the pound - or a set price if they do substantial business with a type of part.
Sounds like its just a big soak tub that you put all the parts in, so seems like you could get a bunch of parts done at the same time? Or am i seeing it wrong. You are limited to the size of the processor. Imagine a giant chest freezer. The weight limit is usually ~2,000lbs per process - the more weight in the chamber - the less it actually costs per pound.
Id like to do as much as i can to strengthen things, but the price tag will dictate what i can actually do
The process looks like a big chest freezer. The parts don't actually 'soak', in a liquid, the nitrogen is introduced as a gas to slowly bring the temperature down to around 300 below zero. Some cryo processing is a wet process. It is much less cost efficient and offers different results than the gas process.We generally charge by the pound, but there are certain parts that have set prices. Let us know if we can help...
I hope to have an answer to this by the end of the year. Looking at having PMR, Forged, Cryo Forged, and if I could get donated samples the Carillo, Hypermax, etc brands as well tensile and shear tested...I will not believe dramatic claims of vast increases in tensile strength or wear resistance from that process alone. I do feel that it does offer small improvements that often are worth the effort though.
If I were to be having an engine built again, I would have everything cryo'd and then heat treated. I have reviewed some very interesting studies that show some definitive benefits. The studies were with other alloys, but I believe that there is enough correlation to make it worthwhile.Can you Cryo and Coat the same object, or do they not mix? Also if at all possible, and both are performed could you expect (with correct supporting mods) to not blow up a 7.3 running with a max tune of 600hp, and a daily tune of 300 or so? Yes you can cryo and then have the parts coated. You would not want to do it in reverse (coated and then cryo'd).
Crank, Connecting Rods, Pistions, Block, Cam (why not, your already there), valves, pushrods, heads, and block.
That is because it varies based on the specific metallurgy you are talking about. The article couldn't possibly cover the range of applications. The only companies that have hard trade studies consider it proprietary and won't share. I am hoping to have a series of rods tested in the fall (gathering rods and resources $$$) to quantify the strength properties of PMR, forged, cryo forged, and if I can get samples or $ to buy the big name aftermarket rods. I believe that the cryo process will result in ~15% (at least) greater shear and tensile numbers. But we shall see.I looked at the link entitled cryogenic processing, and while it had excellent descriptions of methods and formula for the standard tests used for determining metal strength and hardness, I did not see results of changes in these numbers due to cryo process?