As the core component of locomotive power system, the performance of locomotive crankshaft forging directly affects the efficiency and safety of locomotive operation. In order to improve the performance of locomotive crankshaft forging, it is very important to take effective process improvement measures. This paper will discuss the technological improvement measures to improve the forging performance of locomotive crankshaft.
Material selection and handling
Selection of high-strength materials: The selection of materials with high strength, high toughness, corrosion resistance and other properties, such as alloy steel, stainless steel, etc., to improve the mechanical properties of crankshaft forgings.
Purity and uniformity of the material: ensure the high purity and uniformity of the material, reduce impurities and segregation, thereby improving the mechanical properties of the material.
Optimize forging process
Precise heating process: precise control of heating temperature, time and heating speed to avoid overheating, overburning and uneven temperature, to ensure that the material has good plasticity and organizational structure.
Accurate forging process: The use of accurate forging process parameters, such as forging temperature, deformation speed, deformation degree, etc., in order to obtain the ideal organizational structure and mechanical properties.
Isothermal forging and heat treatment: Through isothermal forging technology, forging is carried out at a constant temperature to avoid the influence of temperature fluctuations on the material structure. At the same time, the heat treatment process is rationally arranged to obtain the best mechanical properties.
Adopt advanced processing technology
Precision machining technology: The use of precision machining technology, such as CNC machine tools, machining centers, etc., to improve the dimensional accuracy and surface quality of crankshaft forgings.
Surface strengthening technology: using shot peening, carburizing hardening and other technologies to improve the surface hardness and wear resistance of crankshaft forgings.
Strengthen quality inspection and control
Non-destructive testing technology: The use of ultrasonic testing, X-ray testing and other non-destructive testing technology to ensure the reliability of internal quality of crankshaft forgings.
Real-time monitoring and feedback system: Establish real-time monitoring and feedback system to monitor and adjust process parameters in the production process in real time to ensure the stability and accuracy of process parameters.
Quality traceability system: Establish a sound quality traceability system, and carry out strict quality control and records for each production link, so as to facilitate problem traceability and improvement.
We will strengthen R&D and technical cooperation
Continuous R&D and innovation: Continuously invest R&D resources to develop new materials, processes and technologies to meet ever-increasing performance requirements.
Industry-university-research cooperation: Strengthen cooperation with universities, scientific research institutions, etc., jointly carry out technological research and tackle key problems, and promote industrial technological innovation.
Technical exchange and sharing: actively participate in industry technical exchange activities, learn from advanced technology and management experience, and constantly improve their own level.
Improving the performance of locomotive crankshaft forging is a continuous process, which needs comprehensive consideration and improvement from many aspects such as material selection, process optimization, processing technology, quality inspection and control. Enterprises should strengthen technological innovation and research and development capabilities, and constantly explore new process improvement measures to improve the performance and reliability of crankshaft forgings to meet the higher needs of the market and customers. At the same time, the government and society should also provide corresponding support and cooperation to jointly promote the progress and development of the locomotive manufacturing industry.
