Precision Manufacturing for Diamond Tool Preparation
1. CNC Precision Grinding
Our HSS center drills are manufactured with high-precision CNC grinding to ensure uniform step geometry, sharp cutting edges, and exact centering. This precision is critical when preparing positioning holes for diamond tool inserts or seats, allowing for ultra-smooth drilling with minimal vibration, even at high lathe speeds.
2. Vacuum Heat Treatment
Each center drill undergoes advanced vacuum heat treatment to enhance surface hardness and internal core strength. This greatly improves wear and heat resistance, making the drills suitable for repeated use on tough substrates like stainless steel, tool steels, and carbide-backed materials used in diamond cutting tools.
3. Ultra-Fine Polished Finish
The ultra-smooth, polished surface minimizes friction and chip adhesion, ensuring clean entry holes and smooth chip flow. It protects both the workpiece and the drill, especially important when drilling soft metals, laminated tool steels, or thermally sensitive components in diamond cutting production lines.
Refined Metallurgy & Thermal Optimization
1. EAF + LF + VD + RS-ESR Metallurgy
Our HSS center drills are made using a multi-stage steel purification process, including Electric Arc Furnace (EAF), Ladle Furnace (LF), Vacuum Degassing (VD), and Rapid Solidification Electro-Slag Remelting (RS-ESR). This results in an ultra-clean steel matrix with enhanced toughness, minimal inclusions, and uniform carbide distribution-ideal for diamond tooling applications where consistency and durability are paramount.
2. Integrated Thermal Optimization
A carefully engineered combination of quenching, cryogenic treatment, and tempering increases hardness up to HRC 67 while preventing chipping and micro-cracks. These properties are essential when pre-drilling mounting holes or guides for diamond segments under high-speed, high-precision conditions.
3. RS-ESR Edge Enhancement
RS-ESR technology reinforces the cutting edges with finely dispersed carbides and cobalt, improving edge retention and resistance to thermal fatigue. This ensures stable performance in continuous, high-load lathe operations, especially when preparing geometrically critical features for diamond tool assembly.
Customizable Engineering for Diamond Cutting Precision
1. M35 Material Focus with Optional Variants
While M2 and M42 options are available, we emphasize M35 high-speed steel for diamond tool manufacturing due to its balanced combination of red hardness, toughness, and wear resistance-perfect for long-run precision operations.
2. Custom Step Geometry & Coating Options
We offer tailored step diameters, helix angles, and flute lengths to match customer-specific tool designs. Coating options include TiN, TiAlN, and TiCN, which enhance heat resistance, reduce wear, and ensure stable performance in dry or high-temperature lathe environments.
Optimized Design for Precision Lathe Drilling
1. Multi-Step Flute Optimization
The flutes between each step are precisely engineered to allow efficient chip evacuation and heat dissipation-especially important in thin-walled or laminated diamond tool blanks. This ensures clean, smooth drilling at high RPM without chip packing or tool overload.
2. Engineered Cutting Angles
Carefully optimized cutting geometries reduce axial force and enhance tool control, providing stable entry even in soft metals or layered composites. This eliminates deformation and ensures clean, concentric pilot holes for further grinding or EDM processing.
3. Performance-Enhancing Coatings
For extreme environments, our center drills support application-specific coatings:
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TiAlN for high-temperature dry cutting
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TiCN for ultra-hard materials and abrasive surfaces
These coatings significantly extend tool life while maintaining the required dimensional accuracy for diamond tool mounting.
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