The ISO 13565 series of standards are specially aimed at characterizing stratified surface texture produced by a two-step manufacturing process such as honing-polishing machining.
An automotive manufacturer used Mountains® to study parameters associated with wear and lubrication.
Mountains® tools used
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Filter measured profile
The “Filtered profiles” study was used to display the roughness curve (the raw and waviness profiles can be shown as well).
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Rk parameters
The “Rk parameters” study was used to visualize the way ISO 13565-2 (or DIN 4776) parameters (also called functional parameters or Bearing Ratio parameters) are calculated from the Abbott curve.
The graphical study shows the Abbott-Firestone curve and the following parameters:
| Rk | Kernel roughness (roughness depth of the core) |
| Rpk | Reduced peak height (roughness depth of the peaks) |
| Rvk | Reduced valley depth (roughness of the valleys) |
| MR1 | Upper material ratio |
| MR2 | Lower material ratio |
| A1 | Upper area (area of the upper triangle equivalent to the peaks) |
| A2 | Lower area (area of lower triangle equivalent to the holes) |
Instrument & software used
2D profilometer + MountainsMap® Profile software