Surface roughness measurement
Roughness measurements are performed with specially designed device. Roughness is one of the important characteristics of metal surfaces, especially when the tested elements have previously been subjected to mechanical or thermal treatment (e.g. thermal cutting).
The roughness test allows to determine the basic parameters of the surface, such as:
- arithmetical mean deviation of the profile from the Ra line
- and height of roughness in relation to ten points of the profile – Rz.