Читать книгу Arc Welding Processes Handbook - Ramesh Kumar Singh - Страница 24

The need to weld nonferrous metals, particularly magnesium and aluminum, challenged the industry. A solution was found called gas tungsten arc welding (GTAW) and is defined as, an arc welding process which produces coalescence of metals by heating them with an arc between a non-consumable tungsten electrode, and the work piece. Shielding for the welding arc is obtained often from an inert-gas, or mixture gases that may not always be inert.

Table 1.1 Welding and joining processes, type of energy used, and their abbreviations as defined by the American Welding Society.

Group	Welding process	AWS letter designation
Arc Welding
Electric Arc Welding	Carbon Arc	CAW
	Flux Cored Arc	FCAW*
	Gas Metal Arc	GMAW*
	Gas Tungsten Arc	GTAW*
	Plasma Arc	PAW**
	Shielded Metal Arc	SMAW*
	Stud Arc	SW
	Submerged Arc	SAW*
Electrical Resistance Welding	Flash Welding	FW
	High Frequency Resistance	HFRW
	Percussion Welding	PEW
	Projection Welding	RPW
	Resistance-Seam Welding	RSEW
	Resistance-Spot Welding	RSW
	Upset Welding	UW
Oxy-fuel Gas Welding (OFW)
	Oxyacetylene Welding	OAW
	Oxyhydrogen Welding	OHW
	Pressure Gas Welding	PGW
Solid State Welding
	Cold Welding	CW
	Diffusion Welding	DFW
	Explosion Welding	EXW
	Forge Welding	FOW
	Friction Welding	FRW
	Hot Pressure Welding	HPW
	Roll Welding	ROW
	Ultrasonic Welding	USW
Capillary Action Transfer and Distribution of Metal
Brazing	Diffusion Brazing	DFB
	Dip Brazing	DB
	Furnace Brazing	FB
	Induction Brazing	IB
	Infrared Brazing	IRB
	Resistance Brazing	RB
	Torch Brazing	TB
Soldering	Dip Soldering	DS
	Furnace Soldering	FS
	Induction Soldering	IS
	Infrared Soldering	IRS
	Iron Soldering	INS
	Resistance Soldering	RS
	Torch Soldering	TS
	Wave Soldering	WS
Other Welding Processes
	Electron Beam	EBW
	Electroslag	ESW
	Induction	IW
	Laser Beam	LBW
	Thermit	TW

*Processes discussed in this book.

**Included with GTAW process.