Korloy TPGH080202L-CRT CN2000 Cermet Finishing Insert for Mirror Surface (10pcs)
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The Original Korloy TPGH080202L-CRT CN2000 is a high-precision Cermet Turning Insert engineered for Ultra-Finishing Operations. Utilizing the advanced CN2000 Cermet Grade, this insert offers exceptional chemical stability and resistance to built-up edge, which is critical for achieving a mirror-like surface finish. The CRT chipbreaker is specifically designed for light depths of cut, providing superior chip control on small-diameter parts typically found in Swiss-type CNC lathes.
The Cermet Advantage: Unlike standard carbide, the CN2000 Cermet substrate has a low affinity for metal workpieces. This means less friction, less heat transfer, and a much brighter surface finish on carbon steel, alloy steel, and even certain stainless steel grades.
Technical Specifications:
| ISO Designation | TPGH 080202L-CRT |
| Insert Shape | Triangular 11° Positive (T) |
| Inscribed Circle (IC) | 4.76 mm / (3/16") |
| Thickness (S) | 2.38 mm / (3/32") |
| Corner Radius (r) | 0.2 mm / (0.008") |
| Grade | CN2000 (Mirror Finish Cermet) |
Core Performance Benefits:
- Exceptional Surface Quality: Achieve Ra < 0.4μm finishes, often eliminating the need for subsequent grinding.
- High Wear Resistance: Cermet's inherent hardness maintains the sharp 0.2mm radius for longer production runs.
- Low Cutting Forces: The CRT geometry is optimized for delicate parts, preventing bending or deflection.
- Stable Dimensions: Resists thermal expansion better than carbide, ensuring tight tolerances over long shifts.
Recommended Cutting Parameters:
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (ap) |
|---|---|---|---|
| Low Carbon Steel | 150-350 m/min | 0.03-0.12 mm/rev | 0.05-0.5 mm |
| Alloy Steel (e.g. 4140) | 120-280 m/min | 0.03-0.10 mm/rev | 0.05-0.4 mm |
Compatible Tool Holders:
Compatible with standard TPGH / TPGB 08-size boring bars and external holders:
- Swiss-Type Tooling: STGCR 1010H08 / STGCR 1212H08
- Precision Boring Bars: S08K-STUPR08 / S10K-STUPR08
Machinist Tip: Cermet (CN2000) Mastery
How to get the best out of TPGH Cermet inserts:
Cermet is brittle compared to carbide. **Avoid interrupted cuts** or scaly surfaces. This grade is strictly for finishing passes where the part is already clean and running true.
Cermet performs best at high speeds. If the surface looks "cloudy," increase your RPM. The heat helps the metal陶瓷 flow better over the cutting edge, resulting in that signature bright finish.
Pro Advice: Use high-pressure coolant if possible to wash away the tiny chips, as recutting a cermet chip will instantly chip the fragile 0.2mm corner radius.
Packaging: 10 pieces per box.