Crankshaft forging is the core component of locomotive power system, its performance is directly related to the running stability and reliability of locomotive. As a key link in the manufacturing process of crankshaft forgings, forging process has a profound impact on the performance of crankshaft forgings. This paper discusses the influence of forging technology on the forging performance of locomotive crankshaft.
Forging temperature is an important factor affecting the performance of crankshaft forgings. The appropriate forging temperature can ensure the plastic deformation ability of the metal material, so that it can be uniformly deformed during the forging process to avoid cracks and other defects. The control of the heating process is also critical, and reasonable heating time and temperature can ensure the uniformity of the internal structure of the metal and improve the mechanical properties of the material.
Deformation and forging ratio are important parameters in forging process, which have significant influence on mechanical properties and internal structure of crankshaft forgings. Too small deformation will lead to insufficient plastic deformation of the metal and affect the mechanical properties of the material. Excessive deformation may lead to cracks in the metal or the structure is too thick, reducing the performance of crankshaft forgings. Reasonable forging ratio can make the internal structure of the metal finer and more uniform, improve the strength and toughness of the crankshaft forging.
The cooling rate and heat treatment process after forging also have important effects on the performance of crankshaft forgings. A reasonable cooling rate can control the phase transition process of the metal and make the internal structure of the metal more uniform. Heat treatment processes such as annealing, quenching, tempering, etc. can further adjust the internal structure of the metal and improve the mechanical properties and fatigue resistance of the crankshaft forgings.
The surface treatment and processing technology of crankshaft forgings also have a certain influence on its performance. Surface treatments such as shot peening, carburizing and quenching can improve the wear resistance and fatigue resistance of crankshaft forgings. The cutting parameters and tool selection in the machining process will affect the surface quality and dimensional accuracy of the crankshaft forgings, and then affect its assembly and service performance.
In summary, the forging process has an important influence on the performance of locomotive crankshaft forgings. In order to obtain high performance crankshaft forgings, manufacturing enterprises should deeply study and master the reasonable forging temperature, deformation, cooling speed and heat treatment process and other key process parameters. At the same time, strengthening the surface treatment and processing technology control of crankshaft forgings is also an important way to improve performance. Through continuous optimization of forging process, the quality and reliability of crankshaft forgings can be improved, manufacturing costs can be reduced, and market competitiveness can be enhanced.
