Technologies checked by the time

Gas-thermal spraying -- process of heating, dispergating and transferring the warmed particles by the gas stream to basis surface.

Oxygen or compressed air can move to gas-thermal installations.

Gas-thermal spraying, air-plasma and laser cladding provide equipment effective protecting and solve the following problems:


  • abrasive wear;
  • high-temperature corrosion;
  • chemical corrosion;
  • cavitation;
  • galvanic corrosion;
  • intercrystalline corrosion;
  • and so on.


coating HVAF
  • Working life increase in several times due to surface working properties improvement;
  • Increase in production competitiveness;
  • Decrease in material capacity and power consumption when processing products;
  • Cutting of costs for repair and purchase of new parts, knots and equipment;
  • Processes automation allows to provide stable quality of coatings;
  • Wide range of coating equipment provides optimal coating solution;

Advantages of gas-thermal coatings in comparison with galvanic chromium plating:

Coating process Galvanic chrome HVOF
Coating material Cr WC-Co WC-Co-Cr WC-CrC-Ni Cr3C2-NiCr
Hardness, HV 300 750-850 >1000 >1050 >1100 900-1100
Adhesion, mPa 41 >70 >80 >80 >80
Porosity - <1% <1% <2% <1%
Corrosive resistance test (ASTM B117), hrs 55-72 216-250 672-720 600-650 672-720
Heat resistance, grade oС 400 550 550 550 950
Environment pollution High waste toxicity. Big costs of cleaning Low-toxic waste, dust-like fraction
Microstructures (25 mkm) 1.png 2.png 3.png 4.png 5.png