What is the difference between Ra and Rz? The basics of "surface roughness" interpreted from JIS B 0031

"Ra 1.6" and "Rz 6.3" written on a drawing.Even if you know they are instructions regarding surface finish, you might ...

Surface Roughness Symbols (Ra/Rz): What Should Newcomers Look for on Drawings? (Only 3 Points to Check)

When faced with a surface that has a surface roughness specification, newcomers tend to aim for the smallest number possible.If it says Ra1.6, they try to make it better than that if possible. If it's ...
Design News

4 Types of Surface Finishes and When to Use Them

Surface finishing is a vital part of many manufacturing projects. How the exterior surfaces of a part or component are made ready for use is important to the manufacturing process. Once a surface is ...
AZOM

Surface Finish Requirements for Static and Dynamic Sealing

What is Hardware Surface Finish? Any surface can look (and even feel) perfectly smooth. However, look closely enough with high magnification and all surfaces will have a degree of fluctuation and a ...
AZoNano

How to Measure the Roughness of Very Smooth Surfaces

Surface roughness influences many mechanical properties, including friction and adhesion, surface reactivity, semiconductor substrate quality, and surface interaction with electromagnetic waves, ...