I need to convert 120 and 320 grit surface roughness into micron unit
Dear Dr. Hussain Hady,
I agree with what has already been said by Dr. François Blateyron .
I suggest to you, however, to take a look at the following notes / paper:
-Surface Finish Charts: Some values of surface finish By LJ STAR
Available at: https://www.ljstar.com/resources/surface-finish-charts/
-Complete Guide to Surface Finish Symbols, Charts, RA, RZ, Measurements, and Callouts by CNC Cookbook
Available at: http://www.cnccookbook.com.s3-website-us-east-1.amazonaws.com/Calculators/SurfaceFinishChartMeasureSymbols.html
-Scratching of Materials and Applications
Pradeep L. Menezes, ... Satish V. Kailas, in Tribology and Interface Engineering Series, 2006
Available, as a third paper (with an interesting table) at: https://www.sciencedirect.com/topics/engineering/surface-roughness-value
Good luck and my best regards, Pierluigi Traverso
Dear Hussain Hady
120 and 320 grit are equivalent to 133.4 and 53.4 micron respectively.
Micron = 11615 (Grit) -0.933
Best regards
Read this book Measuring roughness of surfaces in mechanics
Dear Mohammed Hussein j. H. Al'Atia where does the equation come from? Do you have any references?
Thank you,
Ilaria
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