A106 sched 40 hot oil steel pipe potential for warping.
A106 sched 40 hot oil steel pipe potential for warping.
(OP)
These 3 inch pipes (not insulated) supply hot oil to each press platten. oil temp is 410 deg F. These secondary loops have constant oil circulation. If sprayed with fire hose (2 inch) with ambient temp water is there any chance of pipe warpage? This press has 16 plattens 8 ft by 16 ft and warpage could result in mechanical interference between hot oil supply pipes as press is opened and closed.
Thanks, Stan
Thanks, Stan





RE: A106 sched 40 hot oil steel pipe potential for warping.
RE: A106 sched 40 hot oil steel pipe potential for warping.
RE: A106 sched 40 hot oil steel pipe potential for warping.
RE: A106 sched 40 hot oil steel pipe potential for warping.
Why not set up a simple test-heat a 15' vert. pipe electrically and then spray it.
RE: A106 sched 40 hot oil steel pipe potential for warping.
But, before I tell several maint managers at the mill no way. I keep wondering could the rapid temp change on one side of pipe surface induce some internal stress that would permanently distort the pipe and keep it from going back straight once water is back off this pipe? The experiment would be great except being able to replicate the 400 deg oil circulating thru it.
Thanks again for your time.
RE: A106 sched 40 hot oil steel pipe potential for warping.
Something else to keep in mind. The yield strength of carbon steel can be drastically lower at 450 deg. F than at 80 deg. I was involved in a test program to find out how much reduction in YS there was (440 deg F), and as I recall the least amount was ~20-25%, and the highest was ~35%! You wouldn't even need to reach the 0.2% YS (common) to permanently warp your pipe 1/4" in 15'.
RE: A106 sched 40 hot oil steel pipe potential for warping.