welding By 30936 310 forge welding 310 AD made in Iron pillar of Delhi [https://en.wikipedia.org/wiki/Welding] Feb 10, 1918 1918-1930 welding used electrode wire cosheshly to shield form gases [https://en.wikipedia.org/wiki/Welding] May 4, 1918 arc welding changed and was upgraded 5 times [https://en.wikipedia.org/wiki/Welding] Sep 1, 1976 Like the first welding process, forge welding, some modern welding methods do not involve the melting of the materials being joined. [https://en.wikipedia.org/wiki/Welding] Jan 19, 1980 power supplies commonly used for welding is constant current [https://en.wikipedia.org/wiki/Welding] May 30, 1980 Resistance welding involves the generation of heat by passing current through the resistance caused by the contact between two or more metal surfaces. [https://en.wikipedia.org/wiki/Welding] Jul 19, 1990 most common gas weld is oxyfuel gas weld [https://en.wikipedia.org/wiki/Welding] Jul 4, 1995 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 [https://en.wikipedia.org/wiki/Welding] Feb 16, 2001 shielded metal arc welding (SMAW);[28] it is also known as manual metal arc welding (MMA) or stick welding. [https://en.wikipedia.org/wiki/Welding] Apr 16, 2013 Energy beam welding methods, namely laser beam welding [https://en.wikipedia.org/wiki/Welding]
![shielded metal arc welding (SMAW);[28] it is also known as manual metal arc welding (MMA) or stick welding.](https://s3.amazonaws.com/s3.timetoast.com/public/uploads/photo/10048473/image/44314a35ea5b22f102011e3397ba4ad9?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAJB6ZCNNAN7BE7WDQ%2F20250830%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Date=20250830T013112Z&X-Amz-Expires=604800&X-Amz-SignedHeaders=host&X-Amz-Signature=bd0a8e199a3f34732b19dfb0b4e686cf0ef91e5683cf8367adad36eaef3fcbd0)
