Monthly Archives: December 2013

Soldering – Introduction & Methods

Soldering – Introduction & Methods

Introduction to Soldering & Brazing: They provide permanent joint to bond metal pieces. The process lie some where in between fusion welding and solid state welding. These processes have some advantages over welding process. These can join the metal having poor weldability, dissimilar metals, very less amount of heating is needed. The major disadvantage is joint made by […]

Oxy-Fuel Welding & Its Uses

Oxy-Fuel Welding & Its Uses

Introduction to Oxy-Fuel Welding: Oxy-fuel welding (commonly called oxyacetylene welding, oxy welding, or gas welding in the U.S.) and oxy-fuel cutting are processes that use fuel gases and oxygen to weld and cut metals, respectively. French engineers Edmond Fouché and Charles Picard became the first to develop oxygen-acetylene welding in 1903. Pure oxygen, instead of air, is used to increase the flame temperature to allow localized melting of the […]

Arc Welding – Safety & Applications

Arc Welding – Safety & Applications

What is Arc Welding? Gas tungsten arc welding (GTAW), also known as tungsten inert gas (TIG) welding, is an arc welding process that uses a non-consumable tungsten electrode to produce the weld. The weld area is protected from atmospheric contamination by an inert shielding gas(argon or helium), and a filler metal is normally used, though some welds, known as autogenous welds, do not require it. A constant-current welding power supply produces energy which is […]