Thermal Spray Zinc Coating

Thermal spraying is an industrial coating process that consists of a heat source flame or other and a coating material in a powder or wire form which is literally melted into tiny droplets and sprayed onto surfaces at high velocity.

Thermal spray zinc coating.

Zinc thermal spraying is an alternative coating solution that protects steel from erosion saving time and money. A zinc thermal spray uses the thermal spraying process to adhere the zinc to the base material as opposed to hot dip galvanizing electrogalvanizing or other methods of galvanizing. The zinc 15 aluminum thermal spray coating was introduced in the late 1970 s and is about the highest aluminum composition in zinc that can be industrially made into wire. What is thermal spray coating.

The adhesion strength of zinc coatings on ptfe and pe improved by pre heating the polymer substrates prior to thermal spraying. The hot zinc thermal spraying process is an anti corrosive protection system used for very long life coating requirements. Aluminum and zinc coatings about 260 20 µm thick were successfully deposited on ptfe using wire arc spray spraying. Because the micro structure of each of the droplets of this sprayed coating consists of both a zinc rich and aluminum rich phase zn 15 al offers the optimum corrosion.

Zinc copper and metal alloys such as stainless steel. Zinc wire is 99 9 pure and is not contaminated in the flame spray process. Thermal spraying is particularly suited to protecting articles which are too large to be dipped in galvanizing baths as the coating can reach structures that are already installed. Bradley s use modern thermal arcspray technology for spraying pure zinc metal wire.

In this thermal spray process the zinc wire is melted atomised and sprayed in molten form onto the blasted substrate to create a rich. As a result flame sprayed zinc coatings are much purer than those applied by hot dip galvanizing for instance since the molten zinc used in galvanizing picks up considerable iron because of the nature of the process.