ADVANCED SURFACE ENGINEERING

HVOF (High Velocity Oxy-Fuel) Coating

Using supersonic gas velocities to apply extremely dense metallic or carbide coatings (Tungsten/Chrome Carbides). Delivers peerless wear resistance, low porosity, and exceptional bond strength for control valves, pump impellers, and compressor shafts.

Wear Resistant Coatings Tungsten Carbide Solutions Component Life Extension Industrial Surface Engineering

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Overview

HVOF (High Velocity Oxy-Fuel) coating is one of the most advanced thermal spray technologies used to protect critical industrial components from wear, erosion, corrosion and abrasion. ATSPL applies tungsten carbide and chromium carbide coatings to valves, shafts, rollers, pump components, turbine parts and other high-value equipment operating in demanding industrial environments.

Our HVOF coatings create an extremely dense and strongly bonded protective layer that significantly extends component life, reduces maintenance frequency and minimizes unplanned downtime. Industries including power generation, steel, cement, oil & gas, mining and process manufacturing rely on HVOF coatings to improve equipment reliability and lower lifecycle costs.

Key Specifications & Features

Micro-hardness up to 1400 HV, comparable to hard chrome plating

Extremely high bond strength exceeding 10,000 PSI

Near-zero porosity (< 1%), providing excellent corrosion resistance

Coating thicknesses up to 2-3 mm without cracking or spalling

No thermal distortion or structural changes to the base material

Real HVOF Coating Projects

Actual ATSPL HVOF coating applications and component restoration work.

HVOF Coating Application Process

Precision Internal Surface Coating

Finished Tungsten Carbide Coated Components

Internal Diameter HVOF Coating Operation

Turbine Component Surface Restoration

Typical Applications

Valve Components

Pump Shafts & Sleeves

Turbine Components

Rollers & Mechanical Seals

Compressor Parts

Industrial Wear Surfaces

Key Benefits

Superior Wear Resistance

Low Porosity Coatings

Excellent Bond Strength

Corrosion Protection

Extended Equipment Life

Reduced Maintenance Costs

Common Coating Materials

Tungsten Carbide

Chromium Carbide

Nickel-Based Alloys

Cobalt-Based Alloys

Metal-Ceramic Composites

Custom Engineered Coatings

Frequently Asked Questions

HVOF Coating — Common Questions

Answers to what engineers most often ask about our HVOF thermal spray coating services.

What is HVOF coating and how does it work?

HVOF (High-Velocity Oxy-Fuel) is a thermal spray process that uses supersonic gas velocities to propel molten carbide and metallic powders onto a component surface. This produces extremely dense, hard coatings with very low porosity and exceptional bond strength, ideal for wear and corrosion protection on critical industrial parts.

What materials can be applied with HVOF?

The most common HVOF materials are tungsten carbide (WC-Co, WC-Co-Cr) and chrome carbide, along with various metallic and nickel- or cobalt-based alloys chosen to match the wear or corrosion challenge.

Which components benefit most from HVOF coating?

Control valves, pump impellers, compressor and pump shafts, shaft sleeves, and other high-wear rotating or sealing parts that face abrasion, erosion, or corrosion.

How does HVOF compare to hard chrome plating?

HVOF tungsten carbide coatings deliver higher hardness, better wear resistance, and superior bond strength than hard chrome plating, and they are an environmentally friendly alternative without the hazardous hexavalent chromium of plating.

Do you provide HVOF coating services across India?

Yes. ATSPL provides HVOF coating services to clients across India from our facility in Ahmedabad, Gujarat, including workshop and on-site options for large components.