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Title: Анализ структуры осей железнодорожного подвижного состава, выкованных на гидравлической машине радиальной ковки типа SMX
Other Titles: Microstructure analysis of railway axles forged on a hydraulic radial forging machine type SMX
Authors: Кнауф, Ф.
Фест, Р.
Холь, А.
Нишвитц, П.-И.
Issue Date: 2014
Publisher: Издательство Уральского университета
Citation: Анализ структуры осей железнодорожного подвижного состава, выкованных на гидравлической машине радиальной ковки типа SMX / Ф. Кнауф, Р. Фест, А. Холь [и др.] // Инновационные технологии в металлургии и машиностроении : материалы международной молодежной научно-практической конференции «Инновационные технологии в металлургии и машиностроении», посвященной памяти чл.-корр. РАН, почетного доктора УрФУ В. Л. Колмогорова, [г. Екатеринбург, 26-30 ноября 2013 г.]. — Екатеринбург : Издательство Уральского университета, 2014. — С. 492-498.
Abstract: Due to the high level of investment needed in countries such as e.g. Europe and Asia, there is an increasing demand for machines for the manufacture of rails, railway wheels and railway axles. At the moment railway axles are in most cases forged in a series of different forming processes. In an initial rolling process for example possible defects in the starting material are closed in order to get a homogenous microstructure. In a subsequent forging process, due to the low depth penetration capacity of the plants used, only the contouring of the axle is carried out. The SMS Meer presentation shows that using the SMX hydraulic radial forging machine from SMS Meer it is possible to produce railway axles in a single forming process. This means that pore-free railway axles with an excellent microstructure can be produced from conventional continuous cast material without any upstream rolling process being required. Using the hydraulic radial forging machine, continuous cast carbon steel with defects running in an axial direction can be forged into a railway twin axle in only one heat. The high forming potential of the hydraulic radial forging machine makes this possible. The analyses with regard to microstructure, grain size and pore detection will show very good results. In the zone with the least degree of forming, a homogeneous microstructure evenly distributed across the radius was achieved. The average grain size of 8.5 (ASTM) is likewise evenly distributed across the radius. An ultrasonic analysis of the forged axles showed that there are no pores larger than 3 mm. As these results are very promising, the forging time will be optimized in subsequent tests and the forged axles will be finish machined for a final analysis in accordance with the railway standard.
Conference name: 7-я международная молодежная научно-практическая конференция «Инновационные технологии в металлургии и машиностроении»
Conference date: 26.11.2013-30.11.2013
ISBN: 978-5-7996-0764-7
Origin: Инновационные технологии в металлургии и машиностроении. — Екатеринбург, 2014.
Appears in Collections:Конференции, семинары

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