Core Drill Segment O Type
Product Overview
This O-type core drill segment mould is specially designed for annular segmented hot pressing of core drill bits, optimized for ultra-hard and brittle material processing scenarios like glass precision drilling and ceramic ware hole opening. The fully enclosed O-shaped structure enhances drilling concentricity and anti-yaw performance, meeting high-precision production requirements for 15-150mm thin-walled drills, especially in with strict requirements for hole wall finish.
Product Features
Annular Hydrodynamic Structure：The segment cross-section features a complete O-shaped closed-loop design. The annular chip groove and central 导流 through-hole form a 360° uniform chip evacuation system, increasing debris discharge efficiency by 90% compared to traditional U-type structures. Coolant evenly penetrates the cutting surface during drilling, controlling temperature rise within 30℃.
Gradient Composite Wear-resistant Layer：The working surface is sintered with YG15 cemented carbide and copper-based-diamond composite, the matrix uses 25Cr2MoV heat-resistant steel, and the surface is deposited with TiN hard coating (3μm thickness), hardness up to HV2400, capable of withstanding 100MPa radial cutting force, extending segment life to 5,000 drilling cycles.
3D Temperature Control Forming System：Equipped with annular ceramic heating coils and spiral water-cooled interlayers, achieving precise temperature control within ±2℃ in the range of 250-600℃ via AI adaptive temperature control algorithm. After hot pressing, the segment matrix density uniformity deviation is ≤1.2%, and concentricity error is ≤0.03mm.
Quick-change Ring Mould Structure：Adopting a hydraulic expansion type annular cavity with laser positioning system, reducing single O-type cavity replacement time to 3 minutes, supporting 0.1mm-level inner diameter precision adjustment, and adapting to fast switching production of different 规格 annular segments.
Technical Parameters
Parameter Type | Specific Value |
Applicable Drill Diameter | 15mm-150mm (special for thin-walled drills) |
Mould Working Temperature | Room temperature-600℃ (five-stage intelligent temperature control) |
Hot Pressing Pressure | 0-90 tons (servo hydraulic closed-loop control) |
Mould Size | Standard type 450mm×320mm×280mm (customizable) |
Material Combination | Cavity (YG20 cemented carbide insert + TiN coating) |
Matrix (25Cr2MoV quenched steel) |
Application Areas
Glass Processing：Production of tempered glass door and window round holes, photovoltaic glass positioning hole drill bits;
Ceramic Manufacturing：Forming of bathroom ceramic ware drain holes, tile mosaic precision hole opening tools;
Electronic Industry：Manufacturing of PCB circuit board copper deposition holes, sapphire substrate through-hole drill bits;
Handicraft Processing：Bulk production of crystal jewelry threading holes, agate jade hollow drill bits.
Customization Services
Customizable O-ring inner diameter (10mm-120mm) and cross-sectional thickness (2mm-10mm);
Support for diamond concentration gradient distribution customization (inner ring 80%-outer ring 120%) to adapt to different material cutting resistance;
Development of multi-station annular moulds for one-time hot pressing of 10-12 O-type segment sections, suitable for automated production lines.
Quality Assurance
Complies with ISO 9001:2015 quality management system, each mould undergoes 200 hot pressing-cooling cycle tests;
Three-coordinate measuring instrument detects annular cavity roundness, tolerance controlled within ±0.02mm, concentricity error ≤0.015mm;
12-month warranty provided, free replacement of cavity inserts for non-human damage, lifelong 30% discount on wearing parts replacement, including 2 free mould precision calibrations.
