Mechanical Engineering Portal

Gas Metal Arc Welding (GMAW) is called metal inert gas (MIG) welding. In the gas metal arc welding process, the weld area is shielded by an inert atmosphere of argon, helium, carbon dioxide, or other gas mixtures. The consumable bare wire is fed automatically through …

In Submerged-arc Welding (SAW ), the welding arc is shielded by a granular flux of lime, silica, manganese oxide, calcium fluoride, and other compounds. Gravity flow through a nozzle feeds The flux into the weld zone from a hopper. The thick layer of flux completely co…

Shielded Metal-arc Welding (SMAW) is the simplest and is used for many joining processes. More than 50% of industrial and maintenance welding is currently performed by this process. In this welding operation, an electric arc is generated by touching the tip of a coate…

Comparison of solids, liquids and gases (fluids) can be done in aspects like macroscopic description, mobility of molecules, density, molecular spacing, effect of shear stress, effect of normal stress, viscosity and compressibility is represented below in tabular form…

A lathe machine is a mechanical device in which the workpiece is rotated against a suitable cutting tool to produce cylindrical forms in metal, wood or any other machinable material. Figure 1: Lathe machine Various types of lathe machine tools: Copy Lathe Automat…

The method of adhering or welding microchips or powdered particles present during machining to the rake face of the cutting tool is called built-up edge (BUE). During the machining operation , there are always a certain number of microchips or powdered particles that …

Comparison of various machining processes (boring, drilling, shaping, planning, turning and milling) in aspects of advantages and limitations. S.No Machining Process Advantages Limitations 1 Boring All types of material can be bored. A variety o…