HVOF, at Mach 2.
PK-920, PK-675, PK-700 and PK-750 — the tungsten carbide and metal alloy chemistries we spray with high velocity oxygen fuel for wear protection that lasts.
PK-920, PK-675, PK-700, PK-750. Hard, dense, and virtually defect-free.
Parkway-Kew's high velocity oxygen fuel (HVOF) process deposits tungsten carbide and metal alloy coatings at gun exit velocities over Mach 2. That speed produces a coating that is dense, well-bonded, and lower in porosity than lower-velocity thermal spray processes — the reason it has become the dominant choice for parts exposed to abrasive, adhesive, and erosive wear.
We introduced HVOF for wire drawing blocks in 1989 and have refined the alloy palette every year since. Our standard HVOF chemistries are PK-920, PK-675, PK-700, and PK-750. The recommendation is always tied to the wear pattern and base metal in front of us.
- PK-920 · workhorse HVOF for wire drawing blocks
- PK-675 / PK-700 / PK-750 · specialized wear chemistries
- Dense, low-porosity coating with excellent bond
- Compatible with our proprietary Restore & Grind repair cycle
- Applied since 1989 to wire drawing blocks in production worldwide
Best-fit applications and adjacent processes.
Wire drawing blocks
The application HVOF was first commercialised for at Parkway-Kew, still the most demanding wear duty we coat today.
Fracking plungers
HVOF tungsten carbide chemistries deliver long service life in high-pressure, abrasive fracturing environments.
Rolls, sleeves, shafts
HVOF wear layers restore critical dimension while adding wear resistance the base metal cannot supply.
Send us your part.
Drawings, dimensions, or just a description. Our engineering team will recommend the alloy and process that fit the wear pattern.
Inquiry received.
Thanks. Our engineering team will reach out within one business day.