Description
CARBIDE TURNING INSERTS TCMT
TCMT carbide turning inserts are single-sided, positive-geometry inserts featuring a 60° triangular shape (T) with a 7° relief (clearance) angle. These inserts are designed for medium and finishing turning operations, combining sharp cutting edges with good chipform control. They are suitable for a variety of materials including steel, stainless steel, and cast iron.
Made from cemented carbide (WC-Co) and often CVD or PVD coated (for example multi-layer coatings designed for steels or stainless steels), TCMT inserts provide a good balance of edge sharpness, wear resistance, and low cutting forces.
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Key Features
• Shape: 60° triangle (T)
• Relief Angle: 7° (positive geometry)
• Cutting Edges: Single-sided – typically 3 cutting edges per insert (triangular)
• Mounting Type: Clamp or screw-on (compatible with ISO standard toolholders for 60° shape)
• Coatings: CVD or PVD – example multi-layer for steel and stainless steel (e.g., for “TCMT-SM” chipbreaker family)
• Application Type: Medium turning, finishing, general purpose turning
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Materials & Applications
TCMT carbide inserts are ideal for operations where low cutting force, good surface finish, and moderate depths of cut are required. The positive rake geometry helps reduce tool deflection and power draw, making them suitable for less aggressive turning where finish and dimensional control matter.
Typical Workpiece Materials:
• Steel (carbon and alloy) — general turning, medium finishing.
• Stainless Steel — when appropriate grades/coatings are used to resist heat and built-up edge.
• Cast Iron — suitable too, especially when finishing grey/ductile iron under stable conditions. Non-ferrous — possible but less common; main design focus is on ferrous materials.
Common Operations:
• Finishing and semi-finishing of components
• Medium-depth turning with good surface finish
• Profiling and contour work requiring positive geometry
• External and internal turning where tool rigidity allows
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Advantages & Performance
• Sharp Cutting Edges: Positive geometry ensures clean engagement and good surface finish.
• Reduced Cutting Forces: The 7° relief and triangle positive rake help reduce power draw and deflection.
• Versatile Grade Options: Available in different coatings/substrates optimized for steel, stainless steel, cast iron.
• Efficient Use: Although single-sided, triangle shape still offers multiple tool uses and good flexibility.
• Good Balance: Strong mix of finish capability and reasonable toughness—not purely roughing insert.
