Elihu Thomson and The Resistance Welding

Welding is a very good job choice for becoming a profession. Welding is the joining of two or more materials by heat or heat and pressure to form a bond between them. Welding is very interesting as it spreads all over the world. You can be with the car you drive, the table on which the student is sitting, the gun where people shoot at war, and the building where we are welded together. Welding takes a different position as a work. When the Industrial Revolution began around 1750 AD, a process called forging welding was used.

Resistance welding invented by Elihu Thomson in 1877 was accepted long before arc welding for spot welding and seam joining of seats. Chain manufacturing and butt welding of connecting rods and rods were developed in the 1920s. In the 1940's a tungsten-inert gas process was introduced, which was welded using non-consumable tungsten electrodes. In 1948, the new gas protection process utilized the wire electrode consumed in welding. Recently, several solid phase processes such as electron beam welding, laser welding and diffusion bonding, friction welding and ultrasonic bonding have been developed.

In the last few decades of the nineteenth century, resistance welding was also developed, the first patent in 1885 is owned by Elihu Thomson and will progress further in the next fifteen years. Aluminum heat welding was invented in 1893, and then another process, oxygen combustion was established. Acetylene was discovered by Edmund Davy in 1836, but acetylene was not used until around 1900. Initially oxyfluoride welding was one of the more common welding methods due to its portability and relatively low cost. However, with the development of the 20th century, it became no longer preferred for industrial applications. Due to advances in metal coatings (called fluxes), it was largely replaced by arc welding. The flux covering the electrode mainly protects the substrate from impurities, but stabilizes the arc and adds alloy components to the weld metal.

At the same time, resistance welding processes including spot welding, seam welding, projection welding and flash butt welding have been developed. Elihu Thompson began resistance welding. His patent date is 1885-1900. In 1903, the Germans Goldschmidt invented the first aluminum heat welding for the welding of railway tracks. During this time gas welding and cutting were also improved. In 1887, the development of welding and cutting was promoted by the production of oxygen and subsequent liquefaction of air and introduction of blowpipe or torch. Before 1900, hydrogen and gas were used with oxygen. However, in around 1900 a torch for low pressure acetylene was developed.