Pipe machined from Plate
Pipe machined from Plate
(OP)
If one needed a pipe 7" OD x 5" ID x 12"lg, could this be machined from a 7" thick slab of plate? Are there implications with the grain direction of the plate? I just have an unusual circumstance where I have a piece of plate available and the pipe is a long lead item.
Thanks in advance.
Thanks in advance.





RE: Pipe machined from Plate
not really enough information to give a reasoned answer though.
RE: Pipe machined from Plate
Looks to me like any laminations would be subject to the hoop stress. Might be better to make the length run thru the plate thickness.
Regards,
Mike
RE: Pipe machined from Plate
Thanks again....
RE: Pipe machined from Plate
You might consider the following:
1)Get a piece of your plate through-thickness tensile tested to confirm tensile strength.
2) UT your chunk before putting a lot of work in it.
3) Examine the heck out of the finished part, and also possibly in process, to confirm no laminations.
Regards,
Mike
RE: Pipe machined from Plate
It's not uncommon to roll pipe from plate and weld, although I have no idea what kind of equipment would be required to do that with small-diameter heavy-wall pipe.
RE: Pipe machined from Plate
RE: Pipe machined from Plate
Yes you will no doubt have significant mechanical property variences because of grain structure orientation. A better approach would be to use pvrerate's recommendation or to machine round bar stock.
RE: Pipe machined from Plate
Why do you need 1" wall thickness at this diameter ?
RE: Pipe machined from Plate
Thanks again everyone.
RE: Pipe machined from Plate
I would even feel better about trepanning a 7" out of a much larger OD round forging than trying to use plate.
With plate the load directions are just wrong, and any directionality of properties would hurt you.
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Plymouth Tube
RE: Pipe machined from Plate