Solid Carbide Drill

Solid Carbide Drill: Parameters, Specifications, and Applications

Parameters and Specifications

1. Material Composition
   • Made from 100% virgin tungsten carbide, ensuring high hardness (typically 88-92 HRA) and wear resistance.
   • Grades include cobalt micrograin carbide (e.g., 10% Co for toughness) or advanced coatings like TiAlN, TiN, or PVD for enhanced heat resistance and tool life.
2. Geometric Features
   • Diameter Range: Metric sizes from 3 mm to 25.65 mm; inch sizes from 3/16″ to 3/4″.
   • Flute Design: Advanced geometries (e.g., 30° helix angle) optimize chip evacuation and reduce cutting forces.
   • Point Angle: 140° split point for precise hole starting and reduced wandering.
   • Cooling Options: Internal coolant channels (thru-coolant) for high-speed applications.
3. Dimensional Tolerances
   • Drill diameters adhere to h7 tolerance for high precision.
   • Shank diameters follow DIN 6535 standards (e.g., h6 tolerance for secure chuck fitment).
   • Length variations include jobber-length (standard) or extended flutes for deep-hole drilling (e.g., 5xD, 8xD, or 20xD drill depth ratios).
4. Performance Metrics
   • Cutting Speeds: Up to 300 m/min for high-efficiency machining.
   • Feed Rates: Optimized for material (e.g., 0.1–0.3 mm/rev for steel).
   • Tool Life: Coated grades extend life by 30–50% compared to uncoated carbide.

Applications

1. High-Hardness Materials
   • Cast Iron: Efficient drilling with reduced tool wear.
   • Hardened Steels: TiAlN-coated drills excel in applications like mold making.
   • Stainless Steel/Nickel Alloys: High-performance grades resist adhesion and heat buildup.
2. High-Precision Manufacturing
   • Aerospace Components: Drilling turbine blades or engine casings with tight tolerances.
   • Medical Devices: Micro-drills (e.g., Ø0.1–3.175 mm) for orthopedic implants or surgical tools.
   • Electronics: PCB drilling with ultra-small diameters (e.g., Ø0.2 mm).
3. High-Efficiency Production
   • Automotive: Mass production of engine blocks or transmission parts.
   • Die/Mold Making: Deep-hole drilling (e.g., 8xD) for coolant channels in molds.
   • Energy Sector: Drilling high-temperature alloys in turbines or oil/gas components.
4. Specialized Use Cases
   • Composite Materials: Drilling carbon fiber or GFRP with low delamination risk.
   • Stacked Materials: High-performance drills penetrate multi-layer setups (e.g., metal-plastic-metal).
   • Dry Machining: Advanced coatings enable cutting without coolant in sensitive environments.

Product Examples

1. General-Purpose Drills
   • Uncoated Carbide: For soft materials (e.g., aluminum, brass) at high speeds.
   • TiN-Coated: Balanced performance for general steel machining.
2. High-Performance Series
   • TiAlN-Coated (e.g., ISCAR SCD-ACP): Designed for hardened steels and high-temperature alloys.
   • Micro-Drills (e.g., Changzhou Guangxin GX10020): Ø0.1–3.175 mm for electronics or medical applications.
3. Deep-Hole Drills
   • 5xD/8xD/20xD Ratios: For applications requiring long reach (e.g., hydraulic cylinders).
4. Thru-Coolant Drills
   • Kennametal godrill™ 5xD: Internal channels deliver coolant directly to the cutting edge, reducing heat and improving chip control.