HVOF
Liquid fuel and oxygen are fed via a premixing system and at high pressure into a combustion chamber where they burn to produce a hot high pressure gas stream. This is expanded through a laval type nozzle increasing the gas velocity to around 1500m/sec and the pressure to slightly above atmospheric. At this stage the powder can easily be injected into the gas stream.
This gas stream heats and accelerates the powder particles within the confines of the secondary nozzles so that they impact with tremendous energy upon the substrate material. The MET-JET III System does not melt powders but only softens them. Because less heat is imparted to the particles and dwell times are very short oxidation and decomposition are minimal in MET-JET III coatings.
The Metallisation MET-JET III System produces the densest metallic and carbide coatings of all, with high hardness and low oxide levels. Furthermore coatings are often compressively stressed allowing thick coatings to be applied without fear of spalling. The Metallisation MET-JET III System is designed to meet the needs of the general market by providing a robust, easy to use and inexpensive system.
The whole system is integrated to provide reliable and reproducible results with simple to understand operation and a long life. Interconnections between the various components have been designed such that it is almost impossible to make a wrong connection. Hoses are colour coded for ease of recognition and safety.
The MET-JET III HVOF System is a combination of carefully developed individual elements, each designed to give prime performance in its own right. The integration of those elements produces the ultimate in industrial HVOF Spraying Systems.