SDFTools Long-Force Drill Series—Special Tool for High-Wind Pressure Drilling Tools

——Designed for Extreme Conditions, Overcoming High-Hardness Material Machining Challenges

I. Product Overview

The SDFTools Long-Force Drill Series—Special Tool for High-Wind Pressure Drilling Tools is specifically designed for the high-pressure pneumatic drilling tool industry. It is suitable for processing high-hardness carburized materials (such as 18/20/23CrNi3Mo, 30CrNi4Mo, 20CrNi2Mo, etc.), with material surface hardness ranging from HRC 42 to 52. This series features a cone-bottom drill tip design combined with patented technology and nano-coating processes, offering a high-precision, high-efficiency, and long-life solution for gear hole machining.

II. Comparison of Low-Wind Pressure and High-Wind Pressure Drilling Tool Applications

III. Applications and Characteristics of High-Wind Pressure Drilling Tools

1. Industry Background and Applications
   High-wind pressure drilling tools are widely used in mining, tunnel construction, and building engineering, particularly in rock fragmentation and deep-hole drilling operations. Due to their harsh working environments, heavy loads, and extreme durability requirements, the manufacturing of these tools demands advanced materials and machining processes.
2. Machining Challenges
   • Extreme Material Hardness : High-wind pressure tools use high-strength alloys (e.g., 23CrNi3Mo, 30CrNi4Mo) with hardness up to HRC 52. Traditional tools often fail due to chipping or short lifespans.
   • Chip Control Difficulty : High-hardness material chips are hard to break, leading to tool entanglement and downtime.
   • High Precision Requirements : Gear holes require strict dimensional accuracy and consistency for stable assembly performance.
   • Complex Geometries : Parts often have intricate structures, causing issues like rough hole walls and roundness deviations.
   • Surface Quality Demands : Deep-hole machining requires surface roughness ≤Ra3.2 to avoid stress concentration.
   • High Wear Resistance : Tools must withstand intense impacts and wear during use.
   • High Thermal/Mechanical Loads : Tools must endure high-frequency impacts and temperatures, demanding exceptional wear and heat resistance.

IV. Our Advantages

The SDFTools Long-Force Drill H Series addresses these challenges with:

• High-Hardness Machining Capability : Nano-composite coatings enhance wear and heat resistance for HRC 42–52 materials.
• Precision Machining : Hole accuracy IT6–IT7, roundness ≤0.01mm, hole diameter tolerance ≤0.02mm.
• Efficient One-Pass Machining : Reduces cycle time and tool costs.
• Patented Drill Tip Design :
  • Cone-bottom + Large R Corner (R1–3.5mm) : Strengthens the tip and improves hole wall quality.
  • Optimized Flute Geometry : Enables controlled chip breaking, minimizing downtime.
• Nano-Coating Technology : 50% improved wear resistance and heat tolerance up to 1100°C.
• Multiple Resharpening : Proprietary resharpening technology maintains dimensional consistency, extending tool life.

V. Product Specifications

VI. Product Features

1. Precision Machining :
   • Hole accuracy IT6–IT7, surface roughness Ra0.4–3.2μm.
   • Roundness ≤0.01mm, taper ≤0.012mm, hole diameter tolerance ≤0.02mm.
2. Large R Corner Design :For D14+ tools, improves hole wall quality and tip strength.
3. Patented Tip Geometry :Prevents chipping at the drill center.
4. Cost Efficiency :Single-pass machining reduces time and tool costs.
5. Resharpening Technology :Minimal dimensional deviation after resharpening.
6. Long Service Life :Recommended resharpening cycles = (effective blade length – hole depth)/3mm.

VII. Processing Example

Case: Gear Hole Machining for 23CrNi3Mo Carburized Steel