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What are the measurement methods of the surface roughness meter?
Nov 09, 2018

What are the measurement methods of the surface roughness meter?


Let's talk about the following small series, what are the measurement methods of the surface roughness meter?


1. Interference method


Interferometry is the use of the principle of light wave interference to measure surface roughness.


2, needle drawing method


The needle drawing method uses a stylus to directly traverse the surface to be measured to measure the Ra value of the surface roughness.


3. Comparison method


The comparison method is a common method in the workshop. The surface to be tested is compared with the roughness sample, and judged by the naked eye or by means of a magnifying glass and a comparative microscope; the roughness of the surface to be processed can also be judged by the feeling of hand touch and nail swipe. This method is generally used for approximate evaluation of large roughness parameters.


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