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ORGANIZER;CN=ESTAD 2023:mailto:info@metec-estad.com
LOCATION:Room 27
SUMMARY:Influence of temperature on the course of the cross wedge rolling process of a railway axle forging
DESCRIPTION:Cross wedge rolling is a technology used to produce preforms used in drop forging processes or axle and shaft forgings. The cross wedge rolling process is carried out using flat tools or rolls with wedges that, by cutting into the billet, progressively give it the shape of a forging. The technology has a lot of advantages, the most important of which are the high process efficiency and good accuracy of the forgings produced. A significant limitation of the use of cross wedge rolling technology, in particular for the production of responsible parts, is the adverse phenomenon of material cracking in the central part of the forgings during rolling.
The advantages of cross wedge rolling can be exploited in the production of railway axles, which are currently produced by less efficient and less accurate technologies. Unfortunately, the phenomenon of material fracture introduces serious limitations to the implementation of this technology in industry.
The paper presents the results of a study with the primary aim of eliminating material fracture. Numerical simulations using the finite element method were carried out prior to the experimental tests. Using cross wedge rolling technology and specially designed tools, a railway axle forging was rolled at various temperatures. The results of this study confirmed that the rolling temperature has a significant effect on the material fracture phenomenon in the cross wedge rolling process. By increasing the rolling temperature, the material cracking phenomenon can be eliminated. 

CLASS:PUBLIC
DTSTART:20230614T094000
DTEND:20230614T100000
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