Transactions of Materials and Heat Treatment

Title：Development and application on partial upsetting technology of asymmetrical section rail

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ClassificationCode：TG386

year,vol(issue):pagenumber：2021,46(3):27-31

Abstract：

For solving the technical problem of wave deformation for asymmetrical section rail in upsetting, a complete set of partial upsetting device was designed, and the instability and wave deformation of rail during the upsetting of asymmetrical section rails were effectively controlled by the existing forging production line. Then, the number of mold changes was reduced, and at the same time, the designed measurement and display device for upsetting amount could accurately control the upsetting amount and ensure the quality of upsetting. The physical verification shows that using this device and process, the upsetting time of single part is reduced from 60 min in the original process to 8 min, and the efficiency is increased by more than 7 times. Furthermore, the pass rate of the upsetting steel rail is 100%, which is more than three times higher than that of the original process. Therefore, using the existing forging production line, this device and process reduces equipment investment and investment cost, and the production area of upsetting process is reduced in the process layout to optimize the process layout of workshop. Finally, the feasibility of the scheme is verified and the process parameters are determined to guide the actual production.

Funds：

中国中铁工业高速道岔热锻成形自动生产线项目(JK91-50)

王子舒（1989-），男，学士，高级工程师 E-mail：503430009@qq.com

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