Surface roughness measurement

Surface roughness measurement refers to comparing the surface roughness comparison sample with the measured surface through visual and tactile senses, judging which value the measured surface roughness corresponds to, or measuring the change of its reflected light intensity to evaluate the surface roughness.

Stylus measurement is a commonly used measurement method. The stylus surface roughness Tester is an easy-to-use and effective surface roughness measurement tool.

A diamond stylus with a tip curvature radius of about 2 microns is used to slide slowly along the surface to be measured, and the up and down displacement of the diamond stylus is converted into an electrical signal by an electrical length sensor. After amplification, filtering and calculation, the surface roughness is indicated by the display instrument. The Recorder can also be used to record the profile curve of the measured section.

Generally, the measuring tool that can only display the surface roughness value is called a surface roughness measuring instrument, and the one that can record the surface profile curve is called a surface roughness profiler (referred to as a profiler)

These two measurement tools have electronic calculation circuits or electronic computers, which can automatically calculate various evaluation parameters such as the arithmetic average deviation Rα of the contour, the ten-point height RZ of the microscopic roughness, and the maximum height Ry of the contour. It has high measurement efficiency and is suitable for measuring Rα. 0.025-6.3 micron surface roughness.