BVMan
Mechanical
- Jun 20, 2003
- 27
A couple of years ago I saw some components (Valve Ball and Seats) which had undergone a solution treatment which Increased the Surface Hardness of the components and turned the parts almost black in colour.
Whatever the treatment was it did not involve too high a temperature as it was carried out on finished components. The process only changes a few microns from the surface and allows 316 to run against 316 without picking up.
If it helps I seem to recall the process had a German sounding name....although I might be wrong here.
Can anyone point me in the right direction here as to what the process was?
Whatever the treatment was it did not involve too high a temperature as it was carried out on finished components. The process only changes a few microns from the surface and allows 316 to run against 316 without picking up.
If it helps I seem to recall the process had a German sounding name....although I might be wrong here.
Can anyone point me in the right direction here as to what the process was?