Product Overview

This U-type core drill segment mould is specially designed for segmented hot pressing of core drill bits, optimized for thin-walled drilling scenarios like construction boring and stone hole cutting. The U-shaped groove structure enhances chip evacuation and cooling performance, meeting high-precision drilling requirements for hard and brittle materials such as concrete and tiles, suitable for producing thin-walled drills with diameters of 50-300mm.

Product Features

U-shaped Hydrodynamic Structure：The segment cross-section features a U-shaped groove design, increasing the chip evacuation channel area by 40% compared to traditional structures, and improving debris discharge speed by 50% during drilling, effectively avoiding overheating caused by chip blockage.

Gradient Composite Material：The working surface is sintered with YG8 cemented carbide particles and copper-based binder, while the matrix uses 42CrMo alloy structural steel, combining high hardness (HRA89) and impact resistance, capable of withstanding 80MPa drilling pressure.

Precision Temperature Control System：Equipped with double spiral heating tubes and water-cooled interlayers, achieving precise temperature control within ±3℃ in the range of 350-650℃ via PLC intelligent control, with a hardness uniformity deviation of ≤2% after hot pressing.

Detachable Cavity：Adopting a dovetail groove cavity connection structure with quick 定位 pins, reducing single cavity replacement time to 8 minutes, supporting fast switching production of multiple U-type segment specifications.

Technical Parameters

Applicable Drill Diameter：50mm-300mm (special for thin-walled drills)

Mould Working Temperature：Room temperature-650℃ (segmented heating)

Hot Pressing Pressure：0-80 tons (hydraulic servo control, pressure fluctuation ≤±1.5%)

Mould Size：Standard type 550mm×400mm×350mm (customizable)

Material Combination：Cavity (YG15 cemented carbide insert) + Matrix (42CrMo quenched steel)

Application Areas

Construction Engineering：Production of concrete wall ventilation holes and water-electric pipeline embedded hole drill bits;

Stone Processing：Manufacturing of special drill bits for sink holes and floor drain holes in marble and granite countertops;

Decoration：Forming of hole-opening tools for brittle materials like tiles and glass;

Geological Exploration：Segmented hot pressing of thin-walled core sampling drill bits.

Customization Services

Customizable U-groove depth (3mm-15mm) and opening width (10mm-30mm);

Support for segment matrix formula customization (e.g., diamond concentration, binder hardness);

Development of multi-station linkage moulds for one-time hot pressing of 4-6 segment sections.

Quality Assurance

Complies with ISO 9001:2015 quality management system, each mould undergoes 200 hours of continuous hot pressing testing;

Laser scanning detects U-groove profile accuracy, with dimensional tolerance controlled within ±0.05mm;

10-month warranty provided, free replacement of cavity inserts for non-human damage, and lifelong cost-price supply of wearing parts.