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How to select the right Welding System for a specific job?
Welding is the process of joining two metals placed together by heating them to melting point. In electric welding, the heat required for welding process is obtained by the use of electrical energy.
Factors Considered While Selecting a Welding System for a Particular Job
There are different materials or metals to be welded and different types of welds are required. Therefore, depending upon the metal, its dimensions, and requirements, different welding systems are selected.
The following factors are to be considered while evaluating an appropriate welding system to complete a specific job −
Types of material (or metal) being welded
Thickness of the material.
The welding position
Type of welding power source
The amount of current available at the welding location
Time required, and
Working conditions, etc.
Welding System for Different Jobs
The following table shows the selected welding system for a particular job −
Nature of Job | Welding System | |||
---|---|---|---|---|
Two thick materials of low conductivity. Two thick materials of high conductivity. Two materials of different conductivity. Thin metals. | Resistance welding system by controlling the contact resistance and suitable electrodes. | |||
Joining copper metal and its alloys. | Carbon arc welding system | |||
Welding work of carbon steel, stainless steel, alloy steel, aluminum, etc. | Atomic hydrogen arc welding system | |||
End to end joints for roads, tubes, wires, etc. | Butt welding system | |||
Two metallic parts (electrode of same metal) | Metal arc welding system | |||
Welding work of aluminum, magnesium and its alloys, stainless steel, etc. | Helium or argon arc welding system | |||
Punched, form or stamped parts | Projection welding system | |||
Localized welding (not air-tight and water proof) | Spot welding system | |||
Leak proof joints of tanks, transformer tanks, compressor tanks, gasoline tanks, air-craft tanks, etc. | Seam welding system |