SDF-K Series General Purpose Internal Cooling Carbide Drill for Cast Iron – KX Coating

1. Material Characteristics

The SDF-K series drills are manufactured using high-quality tungsten carbide, renowned for its exceptional hardness, superior wear resistance, and compressive strength. Compared to high-speed steel, tungsten carbide exhibits higher heat resistance, maintaining its geometric shape and cutting performance even at elevated temperatures, making it ideal for machining high-hardness materials like cast iron. Additionally, tungsten carbide offers excellent chemical stability, reducing tool wear by minimizing reactions with the workpiece material.

2. Design Features

• Internal Cooling System: Designed with internal coolant channels that ensure coolant reaches the cutting zone directly, effectively lowering cutting temperatures, enhancing chip evacuation, and minimizing tool damage caused by overheating.
• Optimized Geometric Structure: The drill point angle is meticulously engineered for optimal entry; the helix angle is selected to balance efficient chip removal and the distribution of cutting forces, reducing vibration risks and ensuring straight and smooth drilling.
• Land Treatment: Precise control over land width and position further improves drill stability, especially during deep hole drilling.
• Diameter and Depth Range: Available in a variety of sizes from D3mm to D20mm, suitable for different hole diameters; capable of drilling depths up to 8 times the drill diameter, supporting efficient deep-hole processing.

3. Coating Technology

• KX Coating: This is a multi-layer composite coating specifically tailored for cast iron machining, composed of high-performance materials such as TiAlN. The KX coating not only provides outstanding lubrication, reducing friction coefficients, but also enhances the drill’s oxidation resistance and wear resistance. Under high-temperature conditions, the coating remains stable, extending tool life and improving surface finish quality.

4. Application Areas

• Wide Applicability: The SDF-K series drills are particularly suited for machining various types of cast iron materials, including gray iron, ductile iron, and compacted graphite iron, commonly found in automotive manufacturing, construction machinery, and mold industries.
• Precision Requirements: They meet IT8 to IT9 class hole diameter tolerance requirements, ensuring holes have high dimensional accuracy and roundness, suitable for precision mechanical parts manufacturing.
• Production Efficiency: Due to their excellent cutting performance and long service life, SDF-K series drills can significantly increase machining speeds, reduce tool change frequency, and thus enhance overall production efficiency.

Summary

The SDF-K series general purpose internal cooling carbide drill with KX coating integrates advanced material science, innovative design, and efficient coating technology into a high-end tool. Tailored to address the challenges of cast iron machining, it performs exceptionally well under continuous heavy-duty operations and complex working conditions, making it an ideal choice for those pursuing high-quality and efficient machining.