THERMIT WELDING Welding the parts by using liquid Thermit steel around the portion to be welded is called Thermit welding. this is a type of fusion welding process. In this process, neither arc is produced to heat parts nor flames are used. high temperature is being obtained by the usage of the exothermic reaction. Welding principle is the heat of
Plasma arc machining When a free flowing gas is heated to a very high temperature it becomes partially ionized. This ionized gas is called as plasma. In this process metal is removed from the surface of the work piece with the help of high temperature plasma. Metal is also moved as a result of electron bombardment. This plasma arc machining
Process involving heating and cooling under the controlled conditions of a material to obtain certain desirable properties is known as heat treatment. 1. Laser surface alloying The different types of heat treatment process using laser are shown in the picture. In the process of annealing there is no zone affected by the heat and melting takes place only
Laser Beam Welding setup: Laser beam welding is a welding process that uses a laser beam to melt and vaporize material. A ruby laser rod is used for machining process. Here the lasing material is in the form of a solid ruby rod (doped with chromium) with the end faces made parallel to each other within (1 / 20) of
Laser History: The principle of stimulated emission and the quantum-mechanical fundamentals have been presented by Einstein in the year 1917. After the stimulated emission theory, realization of MASER (Microwave Amplification by Stimulated Emission of Radiation) by Towens of Columbia University and Prokhorov and Basov of Moscow University combine receive the noble prize in the field of MASER’s in the period
LASER Beam Properties: Laser is a powerful source of light having extraordinary properties which aren’t found within the traditional light sources like incandescent lamps, mercury vapour lamps, etc. the unique property of laser is that its light waves travel to a terrible distances with little or no divergence. Just in case of a standard source of light, the light is
