ANSI/AWS STANDARD WELDING TERM AND DEFINITION

ANSI/AWS STANDARD WELDING TERM AND DEFINITION

FUSION WELDING. The melting together of filler metal and base metal, or of base metal only, to produce a weld.

SOLID STATE WELDING. A group of welding processes that produces coalescence by the application of pressure at welding temperature below the melting temperatures of the base metal and the filler metal.

WELD. A localized coalescence of metals or nonmetals produced either by heating the materials to the welding temperature, with or without the application of pressure, or by application of alone and with or without the use of filler metal.

WELDABILITY. The capacity of material to be welded under the imposed fabrication conditions into a specific, suitably designed structure and to perform statisfactorily in the intended service.

WELDING. A joining process tha produces coalescence of metals or nonmetals produced either by heating the materials to the welding temperature, with or without the application of pressure, or by application of alone and with or without the use of filler metal.

AS-WELD, Adj. Pertaining to weld metal, welded joints, and weldments after welding, but prior to any subsequent thermal, mechanical, or chemical treatment.

WELDING ELECTRODE. A component of the welding circuit through which current is condected and that terminates at the arc, molten conductive slag, or base metal.

ARC/WELDING ARC. A controlled electrical discharge between the electrode and the workpiece the is formed and sustained by the establishment of a gaseous conductive medium, called an arc plasma.

WELDER. One who performs manual or semiautomatic welding.

OPERATOR WELDING. One who operates welding machine / robotic .

BRAZE. A weld produced by heating an assembly to the brazing temperature using a filler metal having a liquidus above 450 C (850 F) and below the solidus of the base metal. The filler metal is distributed between the closely fitted faying surfaces of the joint by capillary action.

Liquidus is the lowest temperature at which a metal or an alloy is completely liquid.

Solidus is the higest temperature at which a metal or an alloy is completely solid.

BRAZEABILITY. The capacity of material to be brazed under the imposed fabrication conditions into a specific, suitably designed structure, and to perform satisfactorily in the intended service.

BRAZING. A group of welding processes that produces coalecence of material by heating them to the brazing temperature in the presence of a filler metal having a liquidus above 450 C (850 F) and below the solidus of the base metal. The filler metal is distributed between the closely fitted faying surfaces of the joint by capillary action.

BRAZING FILLER METAL. The metal that fills the capillary joint clearance and has a liquidus above 450 C (840 F), but below solidus of base metal.

BRAZE WELDING/FLOW WELDING. A welding process variation that uses a filler metal with a liquidus above 450 C (850 F) and below the solidus of the base metal. The base metal not melted. Unlike brazing, in braze welding, the filler metal is not distributed in the joint by capillary action.

BRAZER. One who performs manual brazing.

BRAZING OPERATOR. One who operates automatic, furnace, or mechanized, brazing equipment.

SOLDERING. A group of welding process that produces coalescence of materials by heating them to the soldering temperature and by using a filler metal having a liquidus not exceeding 450 C(850 C) and below the solidus of the base metals. The filler metal is distributed between closely fitted faying surfaces of the joint by capilary action.

BUILDUP. A surfacing variation in which surfacing material is deposited to achivethe required dimensions.

BUTTERING. A surfacing variation that deposits surfacing metal on one or more surfaces to provide metallurgically compatible weld metal for the subsequent completion of the weld.

CLADDING. A surfacing variation that deposits or applies surfacing material usually to improve corrotion or heat resistance.

CLAD METAL. A laminar composisting of a metal or alloy, with a metal or alloy of different chemical composition applied to one or more sides by casting, drawing, rolling, surfacing, thick chemical deposition, or thick electroplating.

HARDFACING. A surfacing variation in which surfacing material is deposited to reduce wear