Conversion of Ra to Rz surface roughness
Conversion of Ra to Rz surface roughness
(OP)
Hi,
Is there any thumb rule or acceptable guidelines to convert Ra surface roughness values to Rz surface roughness values?
Is there any thumb rule or acceptable guidelines to convert Ra surface roughness values to Rz surface roughness values?





RE: Conversion of Ra to Rz surface roughness
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The Help for this program was created in Windows Help format, which depends on a feature that isn't included in this version of Windows.
RE: Conversion of Ra to Rz surface roughness
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P.E. Metallurgy, Plymouth Tube
RE: Conversion of Ra to Rz surface roughness
what I propose (& do it myself all the time) is to look at this from the manufacturing, i.e. specific machine and machining p.o.v.
In the / some appropriate handbook there shall / should be tables alike this one:
which makes it possible to converse roughness values, at least for standard purposes (~ I'm located in heavy to medium mechanical manufacturing).
Additional hint: for every machining process the usual equipment is characterized by a certain achievable surface quality range. The range itself is defined by e.g. speed of machining, quality of tools,..
Ultimately, your request is a good incentive to talk to (your) workshop people
Regards
Roland Heilmann
Lpz FRG
RE: Conversion of Ra to Rz surface roughness
Thanks for the reply. It was helpful.