NAS959-1974
手动气体保护金属极电弧（GMA）焊接设备（修订版 3）

Manual Gas Metal Arc (GMA) Welding Equipment (Rev 3)

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标准号

NAS959-1974

发布

1974年

发布单位

AIA/NAS - Aerospace Industries Association of America Inc.

 

 

适用范围

Purpose This specification provides a standard for the manufacture@ performance@ inspection@ reliability and procurement of a series of manual gas metal arc welding equipment. This standard lists minimum req??irements and is not to limit design advances. Classification The machine shall be of the following types@ sizes and classes. Type I DC Constant Potential II DC Constant Current III DC Short Circuiting Arc IV DC Pulsed Power Size All equipment shall be rated according to maximum current and to current at 100% (continuous) and 60% duty cycles in addition to the following noted dimensions. Power Source - current Welding gun - Current at continuous duty Filler Metal Feeder - in inches per minute and diameter of hard and soft filler wire. Class Commercial Hardware - stock item Modified Commercial Hardware Custom Hardware

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