Tubular Cored Rods based on tungsten carbide
Opis
WR Fe-650, Fe-651, Fe-654 are iron-based tubular cored rods filled with macrocrystalline tungsten carbides (CM). The rod fill factor is approximately 70%, with a grain size of 80–200 mesh.
The coating is achieved by hardfacing with an oxy-acetylene torch. The CM particles in the coating are evenly distributed, without clustering in specific areas.
The coating obtained by hardfacing with WR Fe-651 tubular rods, combined with the high carbide density, shows very good erosion resistance — e.g. in applications involving contact with mud, soil, and concrete.
Before application, the surface of the base material must be preheated to approximately 500°C.
WR Fe-651 Rod Composition
| Component | Content | Grain Size |
|---|---|---|
| CM* | 70% | 80–200 mesh |
| Fe-Alloy | 30% | – |
* Mono Tungsten Carbide + Atomized Self-Fluxing Nickel-based Alloy
Characteristics
| Component | Hardness | Melting temperature Ts (°C) | Density (g/cm³) |
|---|---|---|---|
| CM | HV0.1 1900–2100 | Td | 15,2 |
| Fe-alloy | HRc <20 | >1450 | ~8 |
Typical Dimensions
Ø 4,0 x 700 mm
Ø 5,0 x 700 mm
Ø 6,0 x 700 mm
Application
Hardfacing of tricone drill bit components intended for the oil exploration, engineering drilling, and coal mining industries.
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