Industries / Oil and gas industry
Oil and gas industry
Engineered coatings for reliable operation.
Protection for oil and gas production, transport and processing components. Coatings improve wear and corrosion resistance, restore geometry and maintain equipment sealing.
Components and protection zones
Choke valve trim
Erosion and abrasion resistance in high-velocity flow.
- Zones:
- Plugs, seats and flow-control surfaces.
- Coatings / bond coat:
- WC-CoCr (HVOF)
- Substrate:
- 17-4PH, 4130 and Inconel 718.
Gate valve seats and bores
Wear resistance, dimensional stability and sealing integrity.
- Zones:
- Sealing and contact surfaces.
- Coatings / bond coat:
- WC-CoCr or Cr3C2-NiCr (HVOF)
- Substrate:
- A216 WCB, LCC and F91.
Pump shaft sleeves
Corrosion and wear protection while maintaining clearances.
- Zones:
- Working diameters and seal contact areas.
- Coatings / bond coat:
- Cr3C2-NiCr (HVOF)
- Substrate:
- 316 and 17-4PH.
Pump impellers
Protection against erosion and cavitation.
- Zones:
- Blades and wetted flow surfaces.
- Coatings / bond coat:
- WC-CoCr or Cr3C2-NiCr (HVOF)
- Substrate:
- CF8M, CD4MCu and duplex stainless steels.
Plungers and piston rods
Reduced friction and wear with corrosion protection.
- Zones:
- Sliding surfaces and seal contact zones.
- Coatings / bond coat:
- Hard chromium or WC-CoCr (HVOF)
- Substrate:
- 17-4PH, 4140 and 4340.
Flanges and seal faces
Reduced galling and reliable joint sealing.
- Zones:
- End faces, seats and seal contact zones.
- Coatings / bond coat:
- Engineered system selected for the service environment
- Substrate:
- Valve and pipeline steels and alloys.
Materials and applications
| System | Materials | Application |
|---|---|---|
| Wear-resistant carbide | WC-CoCr, Cr3C2-NiCr, WC-NiCr | Valves, pumps, choke trim and sleeves. |
| Nickel-based corrosion resistant | NiCrBSi, NiCrMo, NiCr-Mo-B | Housings and flow passages; suitability for H2S / CO2 requires assessment of the environment. |
| Cobalt-based corrosion resistant | CoCrMo, CoCrWN | Components exposed to combined wear and corrosion. |
| Protective metallic | Cr, CrN; Hard chromium | Rods, shafts, pistons and sliding surfaces. |
| Composite and functional | WC-CoCr / NiCr, MoS2, PTFE | Low-friction pairs, seals and specialised interfaces. |
Coating structure
- Functional layer
- Bond coat, if required
- Component material
Schematic, not to scale. Layer count and bonding mechanism depend on the selected material and process.
Coating processes
- HVOF
- APS
- VPS
- Wire arc spray
- Cold spray (CS)
Typical applications, not a component specification. Composition, thickness, surface preparation and acceptance criteria must be selected for the operating conditions and validated by testing.