What is the role of the engine crankshaft?
1、The crankshaft is an important part of the engine. It bears the force transmitted from the connecting rod and transforms it into torque through the crankshaft output and drives other accessories on the engine to work;
2、The crankshaft is subjected to the combined effect of centrifugal force of the rotating mass, cyclically varying gas inertia force and reciprocating inertia force, which subjects the crankshaft to bending torsional loads;
3、Prevent the oil from deteriorating; prevent the crankshaft oil seal and crankshaft liner from leaking.
The reasonable choice of materials and the requirements of the prescribed heat treatment for drop-forged parts are important to increase the strength and service life of shaft components and, at the same time, have a large impact on the processing of shafts. Shaft components are generally made of 45 steel, with different heat treatment specifications (e.g. normalised, tempered, quenched, etc.) to obtain strength, toughness and resistance to wear, depending on the working conditions.