Combustion Coating Technique | HVOF | HVAF | ceramic coating | propane | polypropylene | TiO |

#coating #combustion #ceramiccoating #polymer #thermal #spraycontrol #coatingmachine #coatings #chemical #chemicals #surface #corrosionprotection #corrosion
Presenting combustion coating techniques The HVOF spray process was developed at the end of 1970s. At present, the HVOF is the fastest growing thermal spray process. A fuel medium a gas such as hydrogen, propane, or propylene is burned in oxygen. Combustion jet at temperatures of 2500 °C to 3100 °C. High impact energies, thus ensuring excellent bond strength (70 Mpa and Very low porosity levels 1% The high velocity oxy-fuel HVOF and high velocity air fuel HVAFprocesses have some of the highest particle velocities at relatively low gas temperatures
The spraying technique is less suitable for ceramics which have high melting points. The most used powders are composites with carbide reinforcements and metal or alloys matrices. Typical thicknesses are in the range 100-300 µm. The materials widely used for HVOF spraying are WC-Co, WC-CoCr, NiCr-Cr3C2,TiC-FeCr, TiB2-FeCr NiCr-TiB2 , copper, nickel-aluminium, iron-chromium-molybdenum and cobalt-molybdenum-chromium.

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