Calculating section thickness for heat treat.
Calculating section thickness for heat treat.
(OP)
Could someone direct me to resource to determine effective thickness of various geometric shapes?Currently we have alloy steel tubing 8" OD 2"ID x 20" long to quench&temper.Does it matter if the parts are processed laying down or stood up?Parts are rough machined so distortion not an issue.I recall seeing something in an ASM (I think)publication years ago,but lost track of where it was.





RE: Calculating section thickness for heat treat.
RE: Calculating section thickness for heat treat.
RE: Calculating section thickness for heat treat.
RE: Calculating section thickness for heat treat.
Hope that helps.
Terry
RE: Calculating section thickness for heat treat.
RE: Calculating section thickness for heat treat.
RE: Calculating section thickness for heat treat.
You should also have them standing up for quenching. You are wrong is assuming that distortion will not be a problem since they are rough machined. When quenching, if they are laying down, the parts will become oval in cross-section and "bannana-shaped" along the length. While you might be able to "machine" the distorion away, there may be residual stresses that can cause the material to move after machining.
In addition, circulation of the quenchant on the ID will be restricted, leading to lesser hardening and increasing the chances of quench cracking. Yes, stand them up during heat treatment, at least for the quenching. If you want to lay them down for tempering it won't hurt.
rp
RE: Calculating section thickness for heat treat.
Respects