Mechanical Engineering Portal

In soldering and brazing processes, the metal parts being joined are heated but not melted and molten filler material is made to flow between the two closely placed adjacent surfaces by the capillary action. A strong joint between the parts is formed on cooling to room…

Electrogas welding (EGW) is an vertical positioned arc welding process, is used for welding the edges of sections vertically and in one pass with the pieces placed edge to edge (butt joint). It is classified as a machine-welding process, because for its operation requi…

Honda developed VTEC (Variable Timing and Lift Electronic Control) to improve the volumetric efficiency of a four-stroke internal combustion engine . Ikuo Kajitani, engineer at Honda was the first involved in the development of these four-valve engines. The Honda’s VTE…

Some safety precautions in forging shop to followed while performing forging operation to avoid injuries and accidents are listed below: Forging shop. Image source: Wikimedia Commons Always avoid the use of damaged hammers. Never try to strike a hardened surface with…

The operator must go through and become familiar with these general safety precautions/recommendations to avoid accidents and injuries while working on l athe machine : Operator should always be sure that all guards are in place before running the lathe machine. …

The largest use of LPG (Liquefied petroleum gas) at present is as domestic and industrial fuel. However, there is an increasing trend to use LPG as a motor fuel in an automobile sector. Let us see the major advantages of disadvantages of using Liquified Petroleum Gas …

In an air-cooling system, the outer surface of the cylinder and cylindrical head in reciprocating engine is cooled by air flowing over them. To increase the heat transfer rate from the surface, the metallic fins are cast on the cylinder and cylinder head. These fins in…