Maintenance & Technical > KX500 Original
Pipe Repair
Platypus:
Water expands 1600 times when it is converted to steam. Seems like that would be a good way to pop out a dent. Just learned that the other day reading this article about a 6 stroke engine this guy developed.
http://www.autoweek.com/apps/pbcs.dll/article?AID=/20060227/FREE/302270007/1023/THISWEEKSISSUE
Arigato:
I have also hear that the freezing method works too. You'd have to have a big freezer!
don46:
--- Quote from: Platypus on September 06, 2007, 03:47:17 AM ---Water expands 1600 times when it is converted to steam. Seems like that would be a good way to pop out a dent. Just learned that the other day reading this article about a 6 stroke engine this guy developed.
http://www.autoweek.com/apps/pbcs.dll/article?AID=/20060227/FREE/302270007/1023/THISWEEKSISSUE
--- End quote ---
The idea of using water is to minimize the air volume trapped in the pipe, if a rupture occurs there is minimal energy. As you say water expands 1600 times, where does the volume go? BOOM
MadKaw:
if water expands 1600 times, then the calculation should be pretty streight forward.
total volume the pipe can contain /1600=how many ml of water to use to fill the space with steam upon liquid to gas change.
taking into consideration the displacement of the volume the dent subtracts from what the total volume would be. possibly by filling the dent with water from a syringe on the outside for estimation.
BDI:
I think you are going to wind up with a big split in your pipe before you ever pop a dent using the freezing method. The ice is going to apply pressure to the whole pipe equally not just the dent. Messing with steam sounds dangerous to me. (like mentioned before) What I have thought of but have never tried Is putting plumbers plugs in the pipe, one with a schrader valve. Then pressurize the pipe with a inert gas like Argon to about six psi then heat the dent with a torch until It pops out. I think using air definitely runs the risk of explosion do to the gas and oils inside the pipe. I have successfully welded gas tanks by purging them with Argon while welding.
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