HVOF Thermal Spray Coatings

When a part needs a hard, wear-resistant surface fast, HVOF is often the answer. H&M Plating applies HVOF coatings to industrial parts shipped from across the country, with typical turnaround of 7–10 days. Grinding and finishing happen in the same building, so parts go out ready to install.

Coatings we apply

• Tungsten carbide
• Chrome carbide
• Inconel
• Other HVOF coatings, depending on your application

We also offer twin wire arc and plasma spray. Not sure which coating fits your part? Send a drawing or photo, and we’ll recommend one.

Parts we coat

Here are a few of the parts that come through our HVOF booth:

• Mud motor rotors in every common size and lobe configuration
• Pump shafts and sleeves
• Valve balls, gates, stems and trim
• Compressor and turbine components: journals, seal areas and bearing fits
• Worn shaft fits that can be restored instead of replaced

That’s only a small sample. If it wears, send us a drawing or photo.

Ground to a mirror finish, held to 0.0001″

A coating is only as good as its finish. We grind and polish HVOF coatings to a mirror finish in-house, and we can hold tolerances as tight as 0.0001″. That matters for runout on shafts and anywhere a seal or bearing has to fit right the first time.

HVOF or hard chrome?

HVOF is a strong, cost-competitive alternative to hard chrome for many parts, and it typically turns around faster. We run both HVOF and a 24/7 chrome line, so we recommend what fits your part instead of the one process we happen to offer.

How the work flows

A typical HVOF job runs strip → grind → coat → grind. OD/ID grinding, polishing and liquid penetrant NDT are all in-house, so it’s one PO, one lead time, and no shipping between vendors.

Turnaround

• HVOF thermal spray: 7–10 days typical
• 24-hour expedite: available on request

Your rep confirms the schedule when you get your quote.

Ship your parts from anywhere in the US

1. Send a drawing or photo with the part, quantity and timing you need.
2. Your rep confirms the quote, freight and shipping address.
3. Ship the part, and we get it into the booth.

Why H&M Plating

• HVOF, chrome, grinding and NDT under one roof
• Mirror finishes and tolerances as tight as 0.0001″
• Typical HVOF turnaround of 7–10 days
• ISO 9001:2015 quality system, and NDT liquid penetrant certified
• In business since 1971 in Houston, TX

FAQs

What coatings can you apply with HVOF?
Tungsten carbide, chrome carbide, Inconel and others. Tell us the application and we’ll recommend one.

How fast is HVOF?
Typically 7–10 days, and a 24-hour expedite is available on request.

How tight can you hold tolerances after coating?
As tight as 0.0001″, with a mirror finish when the part calls for it. That’s critical for shaft runout, seals and bearing fits.

Is HVOF a replacement for chrome?
For many parts it’s a strong, cost-competitive alternative. We run both, so we’ll give you a straight recommendation.

Can you restore a worn shaft instead of replacing it?
Often, yes. HVOF or weld overlay can rebuild worn shaft fits. Send a drawing or photo for review.

Do you coat parts from out of state?
Yes. Customers ship to us from across the country.

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