Metal spraying is used to repair the weld seam area of ERW tubes and sections. Zinc, Aluminium or Zinc/Aluminium alloys are typically sprayed using the Metallisation ARC528E automated arc spray system. Pistols are mounted with extraction boxes to extract dust and fume. For some applications, flame spray systems are also used.
Thermal spray zinc coating applied to a new design of shell wind tower.
Metallisation ARC528E systems with 1500A energisers are robot mounted to produce high volume, high quality repeatable coatings to give corrosion protection and increase bolt joint friction.
The 1500A systems enable high production rates required to keep up with the demand for this unique design of wind tower.
Thermal spray zinc coating manually applied to a traditional cylindrical wind tower.
Metallisation ARC140/S350-CL systems are used to apply zinc coatings to the insides and outsides of wind towers. The long supplies packages make spraying the internal areas of long towers a more simple and efficient process. The hand-held pistol is flexible to move around the spray areas and has a manageable throughput.
Metallised zinc coatings are applied predominantly to areas that may be damaged during assembly and installation. The robust zinc coating will give sacrificial corrosion protection to areas where the paint coatings may be damaged.
Metallisation ARC140/S350-CL systems used with 20m supplies and 10m extension supplies were used in the application. Long term corrosion protection was the purpose the of HVOF application for protection against atmospheric corrosion and friction of bolted joint faces.
The material used was zinc (2.3mm), the process was prepared by grit blasting, thermal spraying, then zinc with primer, mid-coat and top coat.