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| Material | BHN/Rc | Speed Range (SFM) |
Cutting Conditions | ||
|---|---|---|---|---|---|
| Max Doc ACD & ATD |
Max Doc ACP & ATP |
Feed Ipr |
|||
| Heat Treated Alloy | 45-60 Rc | 200-600 | 0.01 | 0.04 | .001-.005 |
| Tool Steel | 45-60 Rc | 200-600 | 0.01 | 0.04 | .001-.005 |
| Nodular Iron | N/A | 600-1500 | 0.009 | 0.035 | .001-.005 |
| Pearlitic Iron | 220-240 BHN | 600-2500 | 0.009 | 0.035 | .001-.007 |
| White/Chilled Iron | 54-60 Rc | 200-500 | 0.008 | 0.035 | .001-.005 |
| Super Alloy Ni Base | 240-475 BHN | 200-800 | 0.008 | 0.035 | .001-.005 |
| Cobolt Based Alloy, Stellite | 45-55 Rc | 200-500 | 0.008 | 0.035 | .001-.005 |
| Inconels | 45-55 Rc | 200-500 | 0.008 | 0.035 | .001-.005 |
SFM = Surface Feet per Minute
AS THE DOC DECREASES THE FEED RATE CAN INCREASE
SCT CBN inserts are excellent for continuous cutting of a wide range of hardened steels, powdered metals, cast irons and super alloys. The inserts are precision ground with hones for machining to sub-micron finishes with maximum tool life. CBN tipped inserts can take the place of grinding.
Applications
| Hard Cast Iron | Pumps |
|---|---|
| Impellers | |
| Shafts | |
| Soft Cast Iron | Engine Blocks |
| Brake Rotors | |
| Transfer Housings | |
| Hardened Steel | Pinion Gears |
| Shafts | |
| Bearings | |
| Super Alloys | Turbine Disk |
| Turbine Blade | |
| Engine Shafts |
Application Guidelines
- Make sure the machine and setup is ridged and solid - chatter will cause chipping.
- Tool height when boring should be slightly above center - tool deflection will put the tool on center.
- Do not stop the machine with the tool in cut - this will result in tool breakage.
- Do not use coolant - this could cause thermal cracking.
- Do not contact the tool to a hard surface prior to the machining process - this will cause chipping.
- Depth of cut should not exceed 30% of CBN tip length.
