Determining required surface hardness
Determining required surface hardness
(OP)
Hi folks,
I have a roller riding on a surface. Our system analysis has yielded a contact pressure at the interface. Would anyone be able to point me in the direction of a text explaining how to specify a required surface hardness to resist a given rolling contact pressure?
Many thanks,
Dave
I have a roller riding on a surface. Our system analysis has yielded a contact pressure at the interface. Would anyone be able to point me in the direction of a text explaining how to specify a required surface hardness to resist a given rolling contact pressure?
Many thanks,
Dave





RE: Determining required surface hardness
Here is a slide presentation that would get you started on understanding the effect of hardness and case depth on rolling contact fatigue life.
http://www.slideshare.net/DavePalmerPE/effect-of-s...
RE: Determining required surface hardness
"Recent" attempts to find it online have not ended well.
Highest Hertzian stresses are likely below the surface a little bit.
what is your contact pressure?
How long does this device need to survive?
RE: Determining required surface hardness
RE: Determining required surface hardness
Thanks for the replies ...and there was me hoping to just plug the numbers into a formula!
1400MPa and 10,000 hours are what (/all) I have to work with.
Dave
RE: Determining required surface hardness