CNC Precision Grinding
Our HSS center drill bits are manufactured using CNC precision grinding to achieve uniform step heights, razor-sharp cutting edges, and accurate tip centering. This precision ensures clean, accurate drilling for creating centers in metal parts with minimal vibration and maximum stability, even during high-speed lathe operations.
Vacuum Heat Treatment
To enhance tool longevity, each center drill bit undergoes vacuum heat treatment, increasing both surface hardness and core toughness. This treatment enhances resistance to wear and heat, making these bits perfect for drilling through tough materials like stainless steel, aluminum, and other metals, ensuring a long service life under demanding lathe conditions.
Ultra-Fine Polishing
The ultra-fine polished surface of our center drill bits reduces friction, improves chip evacuation, and minimizes heat generation during deep or repetitive drilling. This polishing treatment also helps protect both the drill bit and the workpiece surface, preventing surface damage, particularly when drilling soft metals or thermoplastics.
Refined Metallurgy & Thermal Optimization
Advanced Steel Purification: EAF + LF + VD + RS ESR
Our center drill bits are made from ultra-clean high-speed steel (HSS) through advanced metallurgical processes such as Electric Arc Furnace (EAF), Ladle Refining (LF), Vacuum Degassing (VD), and Electro-Slag Remelting (ESR). This purification reduces impurities, enhancing toughness and reliability for drilling through hard metals and layered composites.
Integrated Thermal Optimization
A combination of quenching, cryogenic treatment, and precision tempering enhances hardness to HRC 67, while maintaining resistance to chipping and cracking. This makes our center drill bits highly reliable under the high-speed, high-pressure drilling conditions typical in precision lathe work, automotive, and fabrication industries.
RS ESR Edge Enhancement Technology
Through Rapid Solidification ESR processing, the cutting-edge structure is reinforced with uniformly distributed carbides and cobalt. This enhances edge retention and wear resistance, ensuring reliable performance in high-temperature, high-load lathe operations.
Customizable Engineering Options
Material Flexibility: M35-Centric Configuration
While M2 and M42 variants are available, we prioritize M35 HSS for its superior hardness-to-toughness ratio. This makes it ideal for metal drilling, where both edge strength and wear resistance are critical for precise lathe work.
Tailored Step Geometry & Coatings
We offer customizable step sizes, flute lengths, and helix angles to meet specific industrial requirements. Optional PVD coatings like TiN, TiAlN, or TiCN further enhance thermal resistance, reduce friction, and ensure long tool life in tough lathe applications.
Key Design Adaptations for Precision Lathe Drilling
Multi-Step Flute Optimization
The flutes between each step are precisely engineered to facilitate efficient chip removal and thermal management, reducing the risk of clogging during high-speed lathe drilling, especially when working with thermoplastics or thin metal sheets. This design ensures smooth, consistent drilling, even at higher RPMs.
Engineered Cutting Angles
The step transitions and tip geometry are carefully optimized to reduce axial force, improve stability, and prevent material deformation. This is especially beneficial when drilling soft metals or thin-walled parts, ensuring a clean and accurate finish.
Performance-Enhancing Coatings
Our center drill bits support application-specific coatings such as TiAlN for high-temperature lathe operations and TiCN for extreme wear environments. These coatings significantly improve tool lifespan, allowing for reliable, multi-diameter drilling even in challenging industrial conditions.
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