Gas metal arc welding (gmaw), Mechanical Engineering

GAS METAL ARC WELDING (GMAW)

GMAW is abbreviation for Gas shielded Metal Arc Welding. Here fusion is achieved by an electric arc formed between work piece and process is called MAG welding. The wire may be solid wire or flux cored wire. When the flux cored wire is used for welding, the process is called FCAW.

The welding can be semi automatic or mechanised. This is highly amenable for robot welding or robot manipulation. Generally, a constant potential type of power source is used. This may be a transformer-rectifier, thyristor controlled, transistor controlled or inverter type of power source, which may be chosen depending on the quality requirement Generally, in both GMAW and SAW processes, welding wire is connected to positive polarity of the power supply.

GMA welding is gradually replacing SMAW and GTAW. Most metals can be easily welded including aluminium, carbon steels, stainless steels, low alloy steels, nickel, copper, magnesium and titanium. More than 65 % of the welding carried out in developed countries is done by this process. In India as much as 30 % of the welding is by MIG / MAG welding, and nearly 65 % of the welding is by SMAW only.

Posted Date: 9/13/2012 5:09:09 AM | Location : United States







Related Discussions:- Gas metal arc welding (gmaw), Assignment Help, Ask Question on Gas metal arc welding (gmaw), Get Answer, Expert's Help, Gas metal arc welding (gmaw) Discussions

Write discussion on Gas metal arc welding (gmaw)
Your posts are moderated
Related Questions

difference between blow hole and porosity

Calculate the Spindle Speed in Milling Operation Calculate the spindle speed (N) if a copper job is to be milled by  (a) stellite cutter  (b) cemented carbide cutter.

Q. Show Corrosion of BFW Pump? BFW pumps are in high-pressure high-temperature service and may be subject to cavitation and erosion-corrosion. Also overheating of these pumps i

State the Planning the foundation for reciprocating engines i)  The eccentricity of  the common centre of gravity of machine and foundation referred to the centroid of base are

Cracks   Cracks are the linear ruptures of the metal under stress. Sometimes they appear large and frequently they are narrow separations. The major classification of cracks

Find out the intensity of the external pressure: A thick cylinder of 0.5 m external diameter & 0.4 m internal diameter is subjected simultaneously to internal & external press

Uniform Alternate Electric Field Suppose a particle moves under a uniform (i.e. independent of space co-ordinates) but alternating electric field  E  given by, E = E 0  si

Q. Show the scope of materials used in caustic service? This Engineering Practice presents metallic materials of construction commonly used in caustic service. The term 'Caust