Description
CARBIDE TURNING INSERTS TPMT
TPMT carbide turning inserts are triangular, positive-geometry inserts featuring an 11° relief (clearance) angle. These inserts are designed for precision turning and semi-finishing operations, offering a combination of wear resistance, stable cutting edge, and efficient chip control. TPMT inserts are suitable for a variety of materials, including steel, cast iron, and non-ferrous alloys.
Manufactured from cemented carbide (WC-Co) and typically CVD or PVD coated (e.g., TiN, TiCN, Al₂O₃, TiAlN), TPMT inserts provide durability, thermal stability, and long tool life, ensuring reliable performance under moderate cutting conditions.
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Key Features
• Shape: Triangle (T) — 60° included angle
• Relief Angle: 11° (positive geometry)
• Cutting Edges: Single-sided — 3 usable cutting edges
• Mounting Type: Clamp or screw-on (compatible with standard ISO triangular insert holders)
• Coatings: CVD or PVD — TiN, TiCN, Al₂O₃, TiAlN (depending on grade)
• Application Type: Precision turning, semi-finishing, light to medium cuts
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Materials & Applications
TPMT carbide inserts are optimized for operations where precision, surface finish, and moderate depth of cut are important.
Typical Workpiece Materials:
• Steel (carbon and alloy) — suitable for finishing and semi-finishing
• Cast Iron (gray and ductile) — effective with proper grades for stability and chip control
• Non-Ferrous Metals — select the appropriate grade/coating for thermal and wear management
Common Operations:
• Finishing and semi-finishing of components
• Light to medium turning where chip control and edge stability are important
• External and internal turning requiring triangular insert access
• General purpose turning with balanced finish and productivity
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Advantages & Performance
• Efficient Chip Control: Chipbreaker or honed edge ensures smooth chip flow and prevents clogging
• Stable Cutting Edge: Positive geometry and solid base resist chipping and vibrations in moderate cuts
• Multi-Index Economy: Triangular double-sided design allows multiple indexing, reducing cost per edge
• Versatile Use: Suitable for a range of materials (P, M, K groups) with proper grade selection
• Balanced Finish & Productivity: Offers a good compromise between durability and surface finish
