Among the current leading boiler tube coating measures, the HVOF initiative is the one that should not be ignored. So what is HVOF coating and why is this method so popular and widely applied? Together we will discover the answer in the article below.
In the opening, we will briefly introduce the HVOF boiler tube coating measure: What is it and what are its specific features? Moving to the next point, there will be several HVOF coating materials listed. To close the topic, we will inform you of some outstanding benefits that the HVOF method brings.
HVOF coating, standing for High-Velocity Oxygen Fuel Coating, is a thermal spray process in which oxygen and fuel are mixed together and fed into the combustion chamber for gas-generating ignition. This gas carries extremely high temperature and pressure and is ejected through the nozzle at supersonic speed.
Powder continues to be injected into this hot gas stream at high speed and is pushed to the surface to be coated. The result is a coating with low porosity and high bond strength to the base material, which in turn provides corrosion resistance.
Most notably, during HVOF injection, the high velocity of the particles generates kinetic energy. One of the biggest benefits of the HVOF boiler tube coating process is that it produces extremely thick and hard coatings without the other extreme heat.
Before learning about HVOF, let’s take a look at the definition of boiler tube coating. This is a single-component water-based technique that is sprayed in application temperatures up to 2000 F (1100 C). Being one of the most effective boiler tube coating methods available today, the HVOF technique can create a coating with the following notable properties:
In order to produce the correct coating and prolong the life of the equipment, the HVOF boiler tube coating method uses a variety of materials during the spraying process. Some of the most common materials include:
HVOF coatings can be used in a wide range of engineering and manufacturing applications to enhance the surface performance of parts. HVOF is mainly used in corrosion protection, such as subsea pump internals, impeller wear rings, valve plugs and seats (WC-Co, WC-CoCr, WC-NiCr coatings), slurry pump internals, extruder dies and tips, valve balls… This also allows for the cost-effective preparation of high-performance parts made from low-cost or lightweight materials. If processed correctly, the HVOF method causes low environmental impact and produces huge performance gains. HVOF coating is among the top priorities to enhance components by:
Besides boiler tube coating, the HVOF technique is also used in industries such as oil and gas, electricity, water, mining, petrochemical, chemical, aerospace, papermaking… HVOF coating can be used as an alternative to hard Chrome which is harmful to the environment.
Hopefully, the above article has helped you gain more useful information about the HVOF coating method. Despite possessing many outstanding advantages, this method can only maximize its effectiveness when implemented by a reputable and quality team. Therefore, investors and constructors need to find a unit that provides service and consulting solutions and professional construction, and VIVABLAST is such a unit. We provide a variety of insulation materials with advanced construction techniques and modern equipment. VIVABLAST also has a team of well-trained and experienced technicians who carefully evaluate the customer’s system to provide the optimal boiler tube coating solution. For more information, please contact us via: