| Type | D | H | h |
|---|---|---|---|
| SZ0812 | 8.25 | 12.20 | 3.52 |
| SZ1016 | 10.25 | 16.30 | 5.22 |
| SZ1320 | 13.35 | 22.20 | 5.85 |
| SZ1424 | 14.38 | 24.00 | 8.27 |
| SZ1520 | 15.00 | 20.00 | 8.91 |
| SZ1625 | 16.30 | 25.00 | 8.80 |
| SZ1828 | 18.25 | 28.00 | 10.14 |
| SZ1925 | 19.00 | 25.00 | 6.50 |
| SZ2536 | 25.77 | 36.00 | 18.45 |
1. Product Overview
Zhuzhou Jinzhou Carbide manufactures premium conical tungsten carbide inserts and coned buttons specifically designed for mining coal cutter bits, trenching teeth, road milling picks, and soft rock excavation tools. These conical-shaped carbide tips feature a tapered, self-sharpening geometry that efficiently shears and fractures coal, soft rock, asphalt, and other layered or friable materials with minimal cutting resistance. The conical profile concentrates impact and cutting forces precisely at the tip, enabling effective penetration while the gradually widening body provides strength and support during lateral cutting movements. Manufactured from high-quality tungsten carbide powder through advanced sintering technology, our conical inserts offer exceptional wear resistance, impact toughness, and reliable performance in demanding continuous mining, roadheading, and trenching operations. With precise dimensional control and consistent metallurgical properties, these carbide tips ensure extended service life, reduced machine downtime, and lower overall operating costs.
2. Key Features
Self-Sharpening Conical Profile: The tapered geometry maintains a sharp cutting edge throughout the tool’s service life, ensuring consistent cutting efficiency without frequent tip replacement.
Reduced Cutting Resistance: Streamlined conical shape minimizes friction and drag during cutting, enabling faster advance rates with lower machine power consumption.
Superior Impact Toughness: Engineered with optimized cobalt content and refined carbide grain structure to withstand high-impact shock loads encountered in coal seams and soft rock formations.
Exceptional Abrasion Resistance: High-quality tungsten carbide composition ensures outstanding resistance to wear from abrasive materials such as clay, sand, and mineral inclusions.
Vibration Dampening Design: The conical geometry helps absorb and dissipate cutting forces, reducing vibration transfer to the machine and improving operator comfort.
Versatile Application Range: Suitable for both cutting and trenching operations across a wide spectrum of material hardness and abrasiveness.
100% In-House Quality Control: From powder blending to finished product, every batch undergoes comprehensive testing for hardness, density, and dimensional accuracy.
Factory-Direct Supply: Competitive pricing with reliable lead times (7–25 days for mass production), ensuring consistent availability for ongoing mining and construction projects.
3. Specifications
| Parameter | Details |
|---|---|
| Material | Tungsten Carbide (WC-Co) |
| Button Shape | Conical / Tapered / Cone Profile |
| Tip Diameter Range | 6 mm – 22 mm |
| Base Diameter Range | 10 mm – 30 mm |
| Height Range | 10 mm – 35 mm |
| Cone Angle | 60° – 90° (custom angles available) |
| Tolerance | ±0.05 mm |
| Hardness (HRA) | 87.5 – 89.5 (grade dependent) |
| Density (g/cm³) | 14.3 – 15.0 (grade dependent) |
| TRS (Transverse Rupture Strength) | 2,200 – 2,800 N/mm² |
| Sintering Technology | Vacuum Sintering / HIP (Hot Isostatic Pressing) available |
4. Carbide Grade Selection Guide
| Grade | ISO Code | Cobalt Content (%) | Hardness (HRA) | Density (g/cm³) | TRS (N/mm²) | Best Application |
|---|---|---|---|---|---|---|
| YG6 | K10-K20 | 6.0 | 89.0 – 89.5 | 14.9 – 15.2 | ≥ 2,200 | Soft coal, gypsum, clay, and low-abrasion materials requiring maximum wear resistance |
| YG8 | K20-K30 | 8.0 | 88.5 – 89.0 | 14.7 – 14.9 | ≥ 2,500 | Medium-hard coal seams, soft rock, asphalt milling, balanced wear resistance and toughness |
| YG10C | K30-K40 | 10.0 | 88.0 – 88.5 | 14.5 – 14.7 | ≥ 2,800 | Hard coal with inclusions, abrasive soft rock, frozen ground, high-impact trenching conditions |
Note: Custom grades with specific cobalt content, grain size, and cone angle can be developed upon request to suit unique cutting or trenching conditions.
5. Applications
Underground Coal Mining: Cutting tips for continuous miners and shearer drums extracting coal seams with varying hardness and abrasiveness.
Roadheading & Tunneling: Conical picks for roadheader machines excavating soft to medium rock formations in tunnel construction and underground development.
Surface Mining: Trenching teeth for surface miners and rotary excavators removing overburden and soft rock layers.
Road Milling & Pavement Removal: Asphalt and concrete milling teeth for road rehabilitation and infrastructure maintenance projects.
Trenching & Pipe Laying: Carbide tips for trenching machines installing underground utilities, drainage systems, and pipelines.
Agriculture & Land Clearing: Trenching teeth for soil preparation, drain installation, and frozen ground breaking.
Soft Rock Excavation: Cutting elements for gypsum, salt, potash, and other evaporite mining operations.
Foundation & Geotechnical Work: Soft rock excavation for building foundations, slope stabilization, and canal construction.
