Crankshaft refers to a rotating shaft which is used for converting the reciprocating motion of a piston into a rotational motion. These shafts are commonly used in the internal combustion engines with an aim to perform such operations.Crankshafts is found consisting a series of cranks along with the crankpins to which the connecting rods are attached.
Crankshafts are built using the metals like cast iron. The metal is taken in the molten form and is then poured in a mould during the process of casting whereas the modern crankshafts are made from the forged steel that is mostly used in some performance engines.
The process of making a crankshaft includes heating a block of steel until it gets red hot. Once it gets hot its shape is formed using an extreme high pressure. The heat-treatment is either alloyed steel or nitride steel materials which are used. The crankshafts are also surface-hardened.
Functions of Crankshaft
• Converting the linear motion of the piston into the rotational motion is also one amongst its functions.
• The power is produced through the combustion of the fuel-air mixture.
• The shaft of the crankshaft is bored with some holes which feeds the motor with the required quantity of oil. This oil is mainly used to smoothen the movements.
• Crankshafts also functions as load bearing as the load gets distributed during this process.
COMPILED BY MR MURISA B (AUTOMOTIVE ENGINEERING DIVISION)