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
Hazardous Areas are formally ranked as being a designated hazardous area using the relevant regional or country standards that are directly applicable to the plant design under con


High Speed Circuit : The speed of motorcycle is further increased by raising the throttle valve. In this condition, fuel and air enter through main passage and main jet as can be

Design of Connecting Rod: Design and analyse the stress distribution in a connecting rod as shown in Figure 5. The axial load which the connecting rod carries is 1kN and the m

Temporary Stone Scuppers: In hill roads, it is customary to cut the roads from the hill-face and to open up the road immediately thereafter to traffic. Further improvements s

Determine a least square geometric curve y = ax b to the following data : x:  1   2  3   4   5 y: 0.5  2 4.5 8 12.5 Fit a straight line y = a + bx to the following data b

About zeroth law of thermodynamics

Determine tension in the rope: An elevator cage of mineshaft, weighing 8KN when, is lifted or lowered by means of wire rope. Once man weighing 600N entered it and lowered wit

Illustrate working of double acting steam engine. What is its diagram factor and thermal efficiency?

Illustrate Newton's law of viscosity. Explain the importance of viscosity in fluid motion. Describe the effects of temperature on viscosity of water and that of air? Discuss hyd