Process	Flame spraying
	There are two main methods. Wire spraying: for corrosion protection (zinc and aluminium coatings). Powder spraying: for wear resistant coatings. Both are also used for restoring worn surfaces. The porosity of the coating is very high. Flame spraying is used for materials with a high melting-point (up to 2000 C), such as most metals, and some ceramics. Coating thickness varies between 0,1 and 30 mm. The coating material (wire or powder) melts in a oxy-acetylene flame. The particles obtained (droplets) are accelerated by a high-pressure air stream and sprayed onto the substrate.
Danish Name	Flammesprøjtning
Category	Surface processes, coating
Materials	Coating materials: Metals (e.g. Zinc Aluminium Copper & alloys Nickel & alloys Cobalt alloys) Aluminium oxide Zirconium oxide Plastics
Additional info	Low cost equipment, and high spraying rates.
Photo	Thomas Nissen (Computer graphics)
Copyright	© 1996-2019 Torben Lenau This page is part of Design inSite Disclaimer