MIL-STD-869D
DEPARTMENT OF DEFENSE FEDERAL SPECIFICATIONS BB-A-106 Acetylene, Technical, Dissolved BB-H-886 Hydrogen
BB-O-925 Oxygen, Technical, Gas and Liquid
DEPARTMENT OF DEFENSE STANDARDS
MIL-STD-866 Grinding of Chrome Plated Steel and Steel Parts
(Inactive) Heat Treated to 180,000 PSI or over.
(Copies of these documents are available from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094 or https://assist.daps.dla.mil.online/start/.
2.3 Order of Precedence. In event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes laws and regulations unless a specific exemption has been obtained.
3. DEFINITIONS: Not applicable.
4. GENERAL REQUIREMENTS
4.1 Materials and Equipment.
4.1.1 Wire/Flame Spray System. The wire system shall include either a compress air powder gun or an electronically controlled gun. Necessary air filtering shall be capable of delivering oil free and moisture free air. Gas and oxygen regulators shall be two stage regulators. Fuel gas flow meters and regulators must be equipped with flash back valves. Air pressure regulators shall be an OSHA approved type. Hoses,
wire control and straightening units shall complete the system.
4.1.2 Thermo Spray System - Powder. The powder spray system shall include a spray gun that is capable of delivering flow rate. Regulators shall be of the two stage type. Fuel gas regulators and flow meters must be equipped with flash back valves. Air regulators shall be OSHA approved. Hoses and optional equipment shall complete the system.
4.1.3 Plasma Spray System - Powder. The plasma system shall include a plasma gun capable of operating on nitrogen. Argon or helium is primary gases with or without hydrogen as the secondary gas. The gun may be either a hand held or machine mounted type.
a. The plasma gun shall be capable of spraying coatings of powdered materials that have been heated to a plastic or molten state by a highly ionized gas stream passing through a non-transferable electric arc capable of reaching temperatures of 30,000"F or higher producing coatings with bond strength of 4.000 to 12,000 psi or higher.
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