finishing.com logo
    HOME / sitemapFAQsBOOKSHelp WantedsAdvertiseContact   you are here: Hotline/Forum => Letter 38459
most fun in metal finishing

Metal surface finish

adv.   

+++++

I am General Manager of Freedom Machining, Inc. located in Anderson SC.

We have a spec. on a print that requires 1.6 Ra , what is this value in RMS?

Jerry Linne
CNC Machine Shop - Anderson, South Carolina


+++++

Jerry,

Ra x 40 = RMS
1,6 x 40 = 64
so the value in RMS=64

Klaas de Boer
- Derustit, Holland


+++++

There is no precise conversion possible from Ra to RMS, since they are two entirely different measurements. However, assuming a pure sine wave shape, the conversion would be Ra x 1.1 = RMS. This is probably close enough for most purposes.

jeffrey holmes Jeffrey Holmes, CEF
- Spartanburg, South Carolina


ADD a Q or A to THIS thread START a NEW THREADView This Week's HOT TOPICS

disclaim

 seek

JobshopsCapital Equip. & Install'nChemicals & Consumables Consult'g, Train'g, SoftwareEnvironmental ComplianceTesting Svcs. & DevicesUsed & Surplus


©1995-2014 finishing.com     -    Privacy    -    Search