Transcription of Surface Roughness Testing - tesatool.com
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Surface Roughness Testing - tesatool.com
Surface Roughness Testing Surface Roughness Testing J-1. Surface Roughness Testing Summary of Roughness Application of Roughness Parameters Commonly Used Comparison Specimens Arithmetical mean deviation of the For a long time, these specimens for Testing the profile Ra Surface finish quality have proven their value in ( iso 4287 , DIN 4768) practical use. The arithmetical mean deviation of the profile They serve for touch and/or sight comparisons Ra is the mean value of the absolute value of with the Surface of the workpieces that are the profile departure y within the reference manufactured using the same method. length l. Condition is that materials have to be compa- rable.
J-2 Summary of Roughness Parameters Commonly Used Arithmetical mean deviation of the profile Ra (ISO 4287, DIN 4768) The arithmetical mean deviation of the profile
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