Recent content by adamjt

Steve, I am looking for proof of 4140 in shaft sleeve/shaft applications for documentation purposes (pump, turbines, etc...) before we make any material changes.....if you can be of any help in that regard I would greatly appreciate it.

Steve, I am having a wire wooling problem with a large vertical pump with a type 431 shaft sleeve and babbit tilting pad journal bearings. We were looking into using 4140 as a replacement for the 431 shaft sleeve to solve our wire wooling problem. You said you have seen wire wooling on 4140? I...

I need to create a coiled tube within Pro/E, so that it essentially looks like a spring with tubing returing back to the middle. I figured out how to do this with the helical sweep feature. Now the problem is creating a portion of the tube that bends back to the middle and up from where the...

The liquid is flowing very fast, very turbulent and is a 36" diameter pipe. The temp increase is the bulk temperature of the water going up 20 C/hr.

Is it possible to have a model of a pipe in Pro/Mechanica an apply a heat rate to it so that it heats up at 20C/hr. This is to find how much the temperature of the outside f the pipe lags the inside temp at certain heat rates.

I am running a test to see if polycarbonte and polysulphone can withstand oil we are using at 120C. To do this I have the test peices in a large 1.5-2 gallon glass jar. Does anyone have any idea what kind of heater I can use to heat the oil up to and keep it at 120C for days? It needs to be a...

I have a pipe in which the internal water flow heats up at 20 deg C per hr. The pipe is 3" thick carbon steel, with 3" of insulation in a 22 deg C room, with known thermal conductivities. How do you go about finding much the carbon steel pipe lags behind the water in heating up?

My original thoughts were PC but i agree that it won't take the oil. After looking at properties the only polymers that look like they will take that temp and pressure are PC and Polysulphone....looks like it may have to be polysulphone...thanks for the help.

It needs to be clear, as the movement of the oil will need to be seen through it.

I need a clear plastic that can withstand 120 deg Celsius. It cannot turn yellow or fog when exposed to heat. It will be submersed in oil on one side and will need to withstand a at least 50 PSI. I am going to be machining or molding it, whatever is easiest. Does anyone have any suggestion on...