Technical article · 22 July 2014
Successful collaboration between STÄHLI and EHWA in double-disc surface grinding
Double-disc surface grinding, or flat honing, of cermet indexable inserts
In the past, economically grinding cermet and carbide posed a major challenge for the grinding tool. It was almost impossible to machine more than 4 batches of cermet in the machine without having to resharpen the grinding wheel afterwards. This is now a thing of the past.
In close collaboration with machine manufacturer STÄHLI, we succeeded in perfectly matching EHWA grinding tools to the machines. Below are some example results from our tests:
| Machine | STÄHLI 2-disc flat honing machine, type DLM 705 |
|---|---|
| Grinding tool | EHWA resin bond, type TC91 BQ3 |
| Inserts machined without resharpening | > 2,250 pieces |
| Removal rate | up to 3 µm/s |
| Surface quality | < 1 µm |
| Wheel wear | < 1 µm/batch |
| Grinding time | < 3 min for 200 µm |
Values from a joint test run with STÄHLI. The design is always based on the machine, workpiece, and process of the individual case.
If we have sparked your interest, we would be delighted to hear from you. Our application engineering team is happy to assist with any technical questions.