MIL-STD-869D
1. SCOPE
1.1 Scope. This standard covers the materials, procedures, and equipment for
flame spraying of parts.
1.2 Process. 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.
1.3 Classification.
1.3.1 Types. The four types of flame spraying covered in this standard are as follows:
1.3.1.1 Type I. Wire System: Spraying materials in a wire form using oxygen- acetylene/hydrogen/propane, etc.
1.3.1.2 Type II. Powder: Thermo process, spraying materials in a powder
Oxygen, acetylene or hydrogen.
1.3.1.3 Type III. Powder: Plasma process for spraying materials in a powder form utilizing a non-transferable electric arc with nitrogen. Argon and helium as a secondary gas with or without hydrogen.
1.3.1.4 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.
2. APPLICABLE DOCUMENTS
2.1 General. The documents listed in this section are referenced throughout this standard. While every effort has been made to ensure the completeness of this list, standard users are cautioned that they must meet all referenced requirements of the documents cited, whether or not they are listed in this section.
2.2 Government Documents.
2.2.1 Government specifications, standards, handbooks, and commercial item descriptions. The following specifications, standards, handbooks, and commercial item descriptions form a part of this document to the extent specified herein. Unless otherwise specified the issues of these documents are those cited in the solicitation or contract.
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