welding

forge welding 310 AD made in Iron pillar of Delhi

310

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1918-1930 welding used electrode wire cosheshly to shield form gases

Feb 10, 1918

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arc welding changed and was upgraded 5 times

May 4, 1918

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Like the first welding process, forge welding, some modern welding methods do not involve the melting of the materials being joined.

Sep 1, 1976

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power supplies commonly used for welding is constant current

Jan 19, 1980

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Resistance welding involves the generation of heat by passing current through the resistance caused by the contact between two or more metal surfaces.

May 30, 1980

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most common gas weld is oxyfuel gas weld

Jul 19, 1990

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Welds can be geometrically prepared in many different ways. The five basic types of weld joints are the butt joint, lap joint, corner joint, edge joint, and T-joint

Jul 4, 1995

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shielded metal arc welding (SMAW);[28] it is also known as manual metal arc welding (MMA) or stick welding.

Feb 16, 2001

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Energy beam welding methods, namely laser beam welding

Apr 16, 2013

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