What is HVOF used for?
What is HVOF used for?
High Velocity Oxygen Fuel (HVOF) coatings The HVOF process is used in key industries such as oil and gas, power, water, mining, petrochemicals, chemicals, aerospace, paper, engineering and manufacturing. HVOF coatings can be used as a replacement for environmentally damaging Hard Chrome.
What is HVOF thermal spray?
High Velocity Oxygen Fuel (HVOF) coating is a thermal spray process in which a fuel and oxygen are mixed, fed into a combustion chamber, and ignited. The gas produced in the combustion chamber has an extremely high temperature and pressure and is ejected through a nozzle at supersonic speeds.
What is meant by HVOF in metal coating?
High Velocity Oxygen Fuel (HVOF) coating is a thermal spray coating process, which is used to improve or restore a component’s surface (properties or geometry). This surface engineering technique better enables life extension of equipment by increasing erosion and wear resistance, and corrosion protection.
How hot is HVOF?
By injecting room temperature inert gas into the combustion gas jet of HVOF, the temperature of the propellant gas can be controlled in a range approximately from 2300 to 1000 K so that many powder materials can be deposited in thermally softened state at high impact velocity.
What is the difference between HVOF and HVAF?
HVAF coatings are similar to and generally comparable to coatings produced by HVOF and Cold Spray. HVAF is a “warm spray” process that is cooler than HVOF, but hotter than Cold Spray. HVAF guns utilize axial powder injection into an air-fuel jet with a temperature of about 1900-1950°C.
What is HVOF tungsten carbide coating?
HVOF. Tungsten carbide coatings applied with high-velocity Oxygen Fuel (HVOF) involve a high kinetic energy being sent into the powder particles as a thermal spray. These particles are highly energetic but when they hit the substrate, the velocity goes to zero and the kinetic energy is absorbed.
What is HVAF spray?
What is HVAF Spray? HVAF is short for high velocity air fuel. It is closely related to HVOF spray but improves upon its methods. HVAF produces stronger, more uniform coatings. The flame temperature of HVAF is closer to the melting point of most coatings materials, eliminating breakdown due to particle overheating.
What is TCC coating?
Tungsten carbide is a common coating material used in various industries. Take a closer look at what these coatings are and what it is used for, along with its properties that help it stand out, such as resistance to erosion, corrosion, and abrasion.
What is WC coating?
Tungsten Carbide (WC) is an extremely hard ceramic material in the form of grey fine powder particles. This material exhibits excellent wear, abrasion and scratch resistance due to its high hardness. It shields the surface from damage and other surface-based attacks like corrosion, erosion, and fatigue.
Why is thermal spraying important?
It’s widely used to provide corrosion protection to ferrous metals, as well as to change the item’s surface properties, for instance, to improve the wear resistance or thermal conductivity. Corrosion and wear are a major problem for a long list of industries, so many use a metal spraying process, including: Offshore.
Where is thermal spraying used?
Thermal spray coatings are extensively used in the manufacturing of gas turbines, diesel engines, bearings, journals, pumps, compressors and oil field equipment, as well as coating medical implants.