Tungsten Carbide Wear Plates for Harrows
- Extends disc harrow service life by 5–8× compared to unprotected steel discs
- High hardness HRA 85–90.5 — more than three times harder than ordinary steel
- Superior wear resistance through abrasive, sandy, and rocky soils
- High impact toughness withstands hidden stones and debris
- 100% virgin tungsten carbide raw materials with HIP sintering
- Available in multiple configurations: rectangular plates, curved segments, wedge-shaped tips, and custom designs
- Easy to weld with no cracking — designed for reliable attachment
Description Of Tungsten Carbide Wear Plates for Harrows
Tungsten Carbide Wear Plates for Harrows are high-performance protective components manufactured from tungsten carbide (WC) with a metallic cobalt binder through powder metallurgy and advanced HIP (Hot Isostatic Pressing) sintering processes. These wear plates are designed to be welded or brazed onto the cutting edges and wear surfaces of disc harrows, offset harrows, and other secondary tillage equipment, providing exceptional abrasion resistance and significantly extending the service life of the underlying steel discs.
Disc harrows are essential tools in modern agriculture for seedbed preparation, residue incorporation, and weed control. However, the discs are exposed to some of the most punishing conditions in tillage operations — continuous contact with abrasive soil, hidden stones, sand, and crop residue causes conventional steel discs to wear rapidly, losing their cutting edge and requiring frequent replacement. Disc harrows, especially when used in heavy or rocky ground, require the highest standards of wear protection. Tungsten carbide wear plates precisely address these challenges by creating a durable "armor" layer on the disc's high-wear areas.
Tungsten carbide is one of the hardest materials on earth, second only to diamond on the Mohs hardness scale. With hardness 3 to 5 times that of ordinary steel, carbide wear plates maintain their protective geometry through abrasive conditions, ensuring the disc continues to cut effectively. Field tests have shown that discs protected with tungsten carbide wear plates last 5 to 8 times longer than unprotected discs.
Tungsten carbide wear plates for harrows are available in multiple configurations — including rectangular plates, curved segments, wedge-shaped tips, and custom designs — to suit different disc sizes, shapes, and operating conditions. They are designed to be easily welded onto steel discs with no cracking, ensuring reliable attachment.
Applications Of Tungsten Carbide Wear Plates for Harrows
Disc Harrows: Tungsten carbide wear plates are widely used on disc harrows for secondary tillage, seedbed preparation, and residue incorporation. They protect the disc edges from abrasive wear, maintaining cutting effectiveness and reducing replacement frequency.
Offset Harrows: Carbide wear plates are used on offset harrows for more aggressive tillage in heavier soil conditions, protecting discs from severe wear and impact.
Stubble Cultivation: Tungsten carbide wear plates are used on disc harrows and stubble cultivators for cutting and incorporating crop residue after harvest, where abrasive conditions accelerate wear.
Cultivators and Combination Tillage Tools: Carbide wear plates are also used on cultivator discs and other tillage equipment where disc wear is a concern.
Specifications Of Tungsten Carbide Wear Plates for Harrows
| Parameter | Specification |
|---|---|
| Material | Tungsten carbide (WC) with cobalt binder — 100% virgin grade |
| Hardness (HRA) | 85 – 90.5 (depending on grade) |
| Density | 14.0 – 14.95 g/cm³ (depending on grade) |
| TRS (MPa) | 1,900 – 3,000 (depending on grade) |
| Melting Point | 2,860 – 2,870°C |
| Grain Size | 0.6 – 2.0 μm (depending on grade) |
| Sintering Process | HIP (Hot Isostatic Pressing) |
| Surface Finish | As-sintered or ground |
| Standard Compliance | ISO 9001:2015 |
Typical Configurations:
| Type | Description | Typical Dimensions (mm) | Application |
|---|---|---|---|
| Rectangular Plate | Flat, rectangular wear plate | 50×30×5, 80×40×6, 100×50×8 | Weld-on protection for disc edges |
| Curved Segment | Curved to match disc profile | Custom radius, 60×40×6 | Curved disc edges |
| Wedge Tip | Tapered point for penetration | 80×30×10 (tapered) | Heavy harrow points |
| Trapezoidal Plate | Trapezoidal shape | Custom sizes | Disc edge reinforcement |

