scope:

This standard covers the materials, procedures, and equipment for flame spraying of parts.

Flame spraying is defined as the process of melting materials in a heating zone and propelling them in the molten state onto a part to form a coating. This process can be applied to build up worn areas on parts, for abrasion resistance and/or corrosion protection. It is not intended to rebuild damage by nicks, gouges, etc., without building an entire area.

The four types of flame spraying covered in this standard are as follows:

Type I Wire System: Spraying materials in a wire form using Oxygen-Acetylene/Hydrogen/Propane, etc. Type II Powder: Thermo process, spraying powder using Oxygen, Acetylene or Hydrogen. Type III Powder: Plasma process for spraying materials in a powder form utilizing a non-transferable electric arc with Nitrogen. Argon or Helium with or without Hydrogen as the secondary gas. Type IV Wire Arc Spraying Process Arc spraying system, simultaneously and continuously feeds two metalizing wires at a uniform rate of speed through electrically charged contact blocks.