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Combustion Wire Thermal Spray Process
Metal Spraying


Combustion Wire Thermal Spray Coating Process, also known as Flame Spray, Metal Spray and Metallising-

Schematic Diagram of The Combustion Wire Thermal Spray Process

(also known previously as Flame Spray, Metallizing, and Metal Spray Processes)
Typical Combustion Wire Spray or Flame Spray Process Installation

A Complete Combustion Wire Thermal Spray (Flame Spray) Process Installation


The Combustion Wire Thermal Spray Process formerly known as Metallizing, Flame Spray and Metal Spray Processes was first invented in 1910 by Schoop in Switzerland

Flame spray gun
Old Type Schoop Gun

Flame Spray Process

Recent Gun Spraying 13% Chromium Steel


The flame spray process is basically the spraying of molten metal* onto a surface to provide a coating. Material in wire form is melted in a flame (oxy-acetylene flame most common) and atomised using compressed air to form a fine spray. When the spray contacts the prepared surface of a substrate material, the fine molten droplets rapidly solidify forming a coating. This flame spray process carried out correctly is called a "cold process" (relative to the substrate material being coated) as the substrate temperature can be kept low during processing avoiding damage, metallurgical changes and distortion to the substrate material.

This flame spray process has been extensively used in the past and today for machine element work and anti-corrosion coatings.

* Ceramics and cermets can be used in rod or composite wire form.

Wire flame spray

Common materials Sprayed:


Process Advantages:

Process Disadvantages:







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Thermal Spray Processes: Combustion Wire Thermal Spray Process * Combustion Powder Thermal Spray Process * Arc Wire Thermal Spray Process * Plasma Thermal Spray Process * HVOF Thermal Spray Process * Detonation Thermal Spray Process * Plasma Flame Theory * Cold Spray Coating Process *

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