Expert HVOF Coatings | High Velocity Technologies

HVOF Coating Services From HVT

Replacing worn or obsolete components can be expensive with excessive downtime. However, in many cases, a full replacement isn’t necessary. A customised High Velocity Oxygen Fuel (HVOF) metal spray coating or laser cladding solution can restore and extend the lifespan of your components, ensuring a cost-effective alternative with minimal disruption.

At HVT, your unique situation will be met with a bespoke, engineered solution to ensure the best possible long-term outcome for you and your business. Our advanced HVOF coating services deliver durable surfaces with superior wear and corrosion resistance, optimising the performance of your critical components across multiple industries.

What is HVOF coating and how can it benefit you?

HVOF coating is a thermal spray/metal process which utilises the combustion of a fuel-oxygen mixture and powder injection to deposit metal coatings onto a substrate. The resulting kinetic impact creates a mechanical bond between the coating and the substrate, with coatings exhibiting high-density deposition and a low oxide content.

HVOF uses high-speed heated particles to form a strong, durable coating on metal surfaces, enhancing their resistance to wear, corrosion, and extreme temperatures. The process ensures:

Strong mechanical bond between the coating and the component.
High-density deposition with minimal porosity.
Low oxide content, enhancing corrosion and wear resistance.
Particle velocity exceeding 700 m/s, ensuring superior adhesion and coating integrity.
Spray temperatures between 2,500°C – 3,100°C, depending on fuel type.

Applications of HVOF coating in WA

HVOF is widely used to refurbish and extend the service life of components, particularly in harsh, aggressive environments (e.g. highly acidic/alkaline/saline soils or waters) where protection against heat, corrosion, impact or abrasion damage is required. HVOF is applied across multiple industries, ensuring superior performance and longevity of components such as:

Hydraulic rods and cylinders: Preventing wear and corrosion in heavy machinery.
Pump shafts and impellers: Enhancing resistance to cavitation and corrosion.
Turbine blades: Providing thermal and erosion resistance in high-heat environments.
Boiler tubes: Protecting against particle erosion and high-temperature oxidation.
Mining equipment: Increasing durability in abrasive and impact-intensive conditions.
Aerospace components: Improving resistance to extreme heat and friction.
Oil & gas drilling tools: Reducing wear in high-pressure environments.

By using HVOF coating, businesses benefit from reduced maintenance, lower replacement costs, and improved efficiency across various industrial applications.

Benefits of HVOF coating

Increased component lifespan: Reduces wear, corrosion, and damage.
Lower maintenance costs: Less downtime, fewer repairs.
Enhanced efficiency: Improves performance and durability.
Cost-effective alternative: Avoid full component replacement.
Environmentally friendly: Uses less material than traditional hard chrome plating.

What we offer

High Velocity Technologies services industries operating in diverse environments and with varying budgets. We pride ourselves on offering bespoke, engineered solutions to our clients.

HVT is experienced and equipped with an array of different HVOF coatings to suit your needs, including:

Tungsten carbide alloys

Exceptional wear and corrosion resistance.
Ideal for earthmoving, mining, and impact-exposed components.
High bond strength and low porosity for long service life.

Chrome carbide alloys

Superior high-temperature resistance.
Perfect for boiler tubes and extreme-heat environments.
Protects against abrasion, fretting, cavitation, and particle erosion.

Chromium-nickel alloys

Hard chrome alternative, equal in price and durability.
High resistance to corrosion, abrasion, and fretting.
Budget-friendly option for balancing longevity and cost.

Super alloys (Inconel & Hastelloy)

Ultimate corrosion and temperature resistance.
Used in downhole applications, pumps, and impellers.
Perfect for acidic, alkaline, and saline environments.

Stainless steel coatings

Cost-effective wear and corrosion protection.
Ideal for restoring worn components to OEM specifications.
Suitable for dimensional restoration and rebuilding.

Why Choose High Velocity Technologies?

HVT combines cutting-edge technology, expert knowledge, and tailored solutions to provide superior surface engineering services. Our commitment to quality, efficiency, and reliability ensures long-term success for your components and business.

Contact our team of experts today to find the perfect HVOF solution for your needs.

Case Study: Extending Chrome Rod’s Lifespan with a Custom HVOF Solution

Our HVOF coatings have been successfully applied across various industries, helping businesses extend the service life of critical components. Learn how HVT’s custom HVOF solution significantly improved the durability of chrome rods, reducing maintenance costs and downtime.

FAQs

How long does an HVOF coating last?
Depending on the application and environment, an HVOF coating can last several years to decades, significantly outlasting traditional coatings.

Is HVOF better than hard chrome plating?
Yes, HVOF coatings offer superior wear resistance, corrosion protection, and durability without the environmental concerns associated with hexavalent chromium.

Can HVOF coatings be applied to all metals?
HVOF coatings can be applied to a wide range of metals, including steel, aluminium, titanium, and superalloys, making them highly versatile.

How thick can an HVOF coating be?
Typical thickness ranges from 50 to 3000 microns, but this can be adjusted based on the specific application and performance requirements.