Objective
To improve life of diamond rough station honing stone beyond the current life of 3,500 liners per set of diamond hones utilizing competitor hones.
Process
Rough finish with diamond hone, semi-finish with diamond honing stone, pre-finish with vitrified abrasive honing stone, final plateau honing with vitrified honing stone.
Component
Diesel Cylinder Liner
Material
Cast Iron
Hardness
93-104 HRB 200-270 HB
Incoming Finish
6um Ra (direct from hard turning)
Coolant
Castrol Syntilo 9930
Machine Setup
Single station hone for rough finishing
Stone Specification
Rough: SEG-D213-080-851
Stone Size
3 x 5 x 125mm; Mounted to steel carrier.
Results
Use of Darmann products resulted in a 429% improvement from 3500 liners per set to 15,000.
Final finish improved from 3.9um Ra to 2.0um Ra.