Numerical simulation and experiment on hot forging of high-Mn steel turnout core

The core of railway turnout is generally cast from high manganese steel, but the casting turnout core will produce porosity, cracks, and other casting defects. By analyzing the structure characteristics and forming difficulties of the turnout core, finite element software simulates the forging proce...

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Bibliographic Details
Published inMaterials today communications Vol. 40; p. 109588
Main Authors Zeng, Yupeng, Ji, Hongchao, Song, Changzhe, Wang, Mingming, Li, Jingsheng
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.08.2024
Subjects
Hot forging forming
Numerical simulation
Railway
Response surface method
Turnout core
Numerical simulation
Railway
Hot forging forming
Response surface method
Turnout core
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Summary:The core of railway turnout is generally cast from high manganese steel, but the casting turnout core will produce porosity, cracks, and other casting defects. By analyzing the structure characteristics and forming difficulties of the turnout core, finite element software simulates the forging process, and the influence of forging parameters on the distribution law of the medium effect field, temperature field, die load, and billet damage is systematically studied. In addition, the main parameters (forging temperature, forging speed, and friction between billet and die) are designed and optimized by the response surface method, and the comprehensive optimal solutions are determined. Using the optimum parameters to forge, the forging force of the die and the damage of the forging are reduced. Besides the forming effect, the mechanical properties of the forging are also improved in different amplitudes, and the comprehensive mechanical properties are far better than the core of the casting turnout. [Display omitted]
ISSN:2352-4928
2352-4928
DOI:10.1016/j.mtcomm.2024.109588