The crankshaft in the automobile engine is a special part
Mar 18, 2023| Each vehicle model and engine corresponds to a different crankshaft. You can view the drawing number on the crankshaft. The crankshaft is the most important component in an engine. It bears the force transmitted from the connecting rod and converts it into torque, which is output through the crankshaft and drives other accessories on the engine to work.
The crankshaft is subjected to the combined action of the centrifugal force of the rotating mass, the periodically varying gas inertia force, and the reciprocating inertia force, making the crankshaft withstand the bending and torsional load. Therefore, the crankshaft is required to have sufficient strength and stiffness, and the surface of the journal should be wear-resistant, work evenly, and have good balance.
Crankshaft strengthening technology:
1、 Medium frequency induction hardening of crankshaft
The crankshaft medium frequency induction hardening will adopt a microcomputer controlled closed-loop medium frequency induction heating device, which is characterized by high efficiency, stable quality, and controllable operation.
2、 Crankshaft soft nitriding
In order to improve the quality of the crankshaft in mass production, a microcomputer controlled nitrogen based atmosphere gas soft nitriding production line will be adopted in the future. The nitrogen based atmosphere gas soft nitriding production line consists of a front cleaning machine (cleaning and drying), a preheating furnace, a soft nitriding furnace, a cooling oil tank, a rear cleaning machine (cleaning and drying), a control system, and a gas preparation and distribution system.
3、 Surface Strengthening Technology for Crankshaft
Nodular cast iron crankshaft fillet rolling strengthening will be widely used in crankshaft processing. In addition, composite strengthening processes such as fillet rolling strengthening and journal surface hardening will also be widely used in crankshaft processing. Forged steel crankshaft strengthening methods will increasingly use journal and fillet hardening.