Objective: |
Develop a stable, cost effective honing process that delivers the stringent surface parameters for bearing ratio and oil retention in a performance engine application |
Process: |
Finish hone cast iron cylinder liner using (6) vitrified CBN hones in a single tool |
| Component: |
Cast Iron Cylinder For Recreational Product |
| Bore Size: |
3.15" Diameter (80mm) |
| Material: |
Cast Iron |
| Hardness: |
95 to 105 Rockwell B |
| Incoming Surface: |
Approx. 150 u" Ra (3.75 um Ra) |
| Stock removal: |
.015" to .020" (.38 to .50mm) |
| Coolant: |
Water Soluble |
| Hone Specification: |
CB120-50JV260 |
| Hone Finish: |
32 to 78 u" Ra (1.0 to 1.9 um Ra)
Proprietary Requirements For Rvk, Rmax, Rk, Rpk and Vo |
Results: |
Darmann engineered a very specific vitrified CBN hone solution for this application. The result was a vast improvement in process consistency and part quality. Specific benefits included: |
| |
Hone costs were reduced by 30% |
| |
Increased cell capacity by 15% |
| |
Improved part quality |
| |
Resulted in more consistent process |
ISO 9001:2000 Registered