Heating burners for sintering
During the spraying operation, powder particles pass into and through the fuel gas/oxygen flame and onto the surface of the work piece.
For heavy duty coatings, a reliable bonding to the parent metal is required. This is achieved by way of a thermal treatment after coating with self-fluxing alloys.
During the sintering process, a diffusion bonding is produced between the parental metal and the coating, which is similar with soldering processes. Normally, manual custom torches are used for smaller work pieces. Automatic machine guided water cooled pre-heating burners and sinter burners are used for larger work pieces.