Designed for precision micro-hole drilling in cast iron materials, these 3xD micro carbide drills are manufactured from imported MG grade 0.8 μm tungsten carbide with 10% cobalt content, combined with ALTISIXN coating, controlled edge passivation, and high-precision grinding to improve wear resistance, edge stability, and hole consistency in small-diameter cast iron machining.
The 3xD micro carbide drills for cast iron are designed for small-diameter hole machining where edge strength, wear resistance, hole positioning, and tool consistency are critical. Compared with standard-size carbide drills, micro drills are more sensitive to cutting edge defects, spindle runout, unstable entry, and abrasive wear.
Cast iron materials such as grey cast iron, ductile iron, nodular cast iron, and compacted graphite iron are abrasive during machining. Powdery chips, hard casting skin, and uneven cast surfaces may accelerate cutting edge wear or cause micro-chipping. In micro-hole drilling, these problems can quickly affect hole accuracy, tool life, and batch machining stability.
These micro carbide drills are manufactured from imported MG grade 0.8 μm tungsten carbide rods with 10% cobalt content, supporting stable cutting performance and small-diameter drilling strength. With ALTISIXN coating, manual drill point honing, automatic edge passivation, Walter Helicheck Plus inspection, and German Walter 5-axis grinding, the drills help improve edge protection, wear resistance, and reliable hole quality in precision cast iron machining.
| Item | Description | Item | Description |
|---|---|---|---|
| Product Name | 3xD Micro Carbide Drills for Cast Iron | Drill Type | Micro Solid Carbide Drill |
| Hole Depth | 3xD | Application | Precision micro-hole drilling in cast iron |
| Workpiece Material | Grey cast iron, ductile iron, nodular cast iron, compacted graphite iron | Carbide Material | Imported MG Grade 0.8 μm Tungsten Carbide |
| Coating | ALTISIXN Wear-Resistant Coating | Cobalt Content | 10% |
| Passivation Control | ±0.003 mm | Tool Life | Up to 80–100 Meters Under Suitable Machining Conditions |
| Service | Regrinding and Customization Available | Available Depth Series | 3xD, 5xD, 8xD, 12xD, up to 30xD |
Key Features
Made from imported MG grade 0.8 μm tungsten carbide with 10% cobalt content.
The fine carbide grain structure helps support edge strength, wear resistance, and stable micro-hole drilling in abrasive cast iron materials.
ALTISIXN coating helps protect the cutting edge against abrasive wear in cast iron micro-drilling.
It supports longer cutting stability, reduces premature edge wear, and helps improve tool life in cast components.
The drill point is manually honed and chamfer-passivated to improve cutting edge strength.
Automatic rubber-bonded diamond abrasive polishing keeps edge consistency and controls the passivation value within ±0.003 mm.
Produced on German Walter 5-axis high-precision grinding machines to ensure sharp and accurate cutting edges.
Walter Helicheck Plus inspection and 300x magnification checks help control geometry accuracy and prevent edge defects.
These 3xD micro carbide drills for cast iron are suitable for precision small-hole machining in CNC machining centers, high-speed drilling equipment, and production environments where wear resistance, hole accuracy, edge consistency, and tool reliability are important.
Send us your material and hole requirements. Our team will recommend the right drill solution.
Landun CNC Tool is a carbide drill manufacturer focused on precision solid carbide drills and custom carbide drill solutions, supported by advanced grinding, strict inspection, and consistent edge preparation.
Production Facility
Geometry Accuracy Control
Edge Inspection Magnification
Edge Passivation Control
Our carbide drills are ground on German WALTER 5-axis grinding machines for sharp cutting edges, stable accuracy, and smooth drilling performance.
We use WALTER HELICHECK PLUS for contour inspection, keeping profile and radius control within 3 μm for reliable geometric precision.
Each carbide drill is inspected at 300x magnification to check edge quality and avoid chipping or saw-tooth defects before shipment.
Manual drill point honing and automatic rubber-bonded diamond abrasive polishing help improve tool life and control edge consistency within ±0.003 mm.
Common Questions
3xD means the drill is designed for hole depths up to 3 times the drill diameter. For micro drills, this depth is suitable for stable small-hole machining with better rigidity and positioning control.
Yes. These 3xD micro carbide drills are designed for cast iron materials, including grey cast iron, ductile iron, nodular cast iron, and compacted graphite iron under suitable machining conditions.
This micro carbide drill uses ALTISIXN coating, which helps improve abrasive wear resistance, edge protection, and cutting stability in cast iron micro-hole drilling.
Stainless steel has high toughness, poor thermal conductivity, and strong work-hardening tendency. In micro-hole drilling, cutting heat, edge wear, and chip control can quickly affect hole accuracy and tool life.
Cast iron is abrasive and often produces powdery chips. In micro-hole drilling, abrasive wear and edge chipping can quickly affect hole accuracy and tool life, so a wear-resistant coating and stable edge preparation are important.
We use German Walter Helicheck Plus for contour measurement, with profile and radius control within 3 μm. The products are also inspected at 300x magnification to check edge appearance and avoid chipping or saw-tooth defects.
We use German Walter Helicheck Plus for contour measurement, with profile and radius control within 3 μm. The products are also inspected at 300x magnification to check edge appearance and avoid chipping or saw-tooth defects.
Yes. We support customization based on diameter, hole depth, shank size, coating, stainless steel grade, drawings, samples, and machining requirements.
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