Frantisek Botko1* , Michal Hatala1 , Dominika Botkova1,2, Svetlana Radchenko1
1 The Technical University of Kosice, Faculty of Manufacturing Technologies with a seat in Presov, Bayerova 1, 080 01 Presov, Slovak Republic
2 The Czech Academy of Sciences, Institute of Geonics, Studentska 1768, 708 00 Ostrava – Poruba, Czech Republic
ORIGINAL SCIENTIFIC PAPER
ISSN 2637-2150
e-ISSN 2637-2614
UDK 006.83:005.6]:658.5
DOI 10.7251/STED0220009B
Paper received: 20.10.2020.
Paper accepted: 20.11.2020.
Published: 30.11.2020.
http://stedj-univerzitetpim.com
Corresponding Author:
Frantisek Botko, The Technical University of Kosice, Faculty of Manufacturing Technologies with a seat in Presov, Bayerova 1, 080 01 Presov, Slovak Republic, frantisek.botko@tuke.sk
ABSTRACT
Nowadays is important to increase power efficiency in the heat production sector. Tubes with shaped internal surface are one of the possibilities to improve efficiency of heat exchangers. In the fact of this is actual to look on the improvements of the process of forming from the perspective of the tool construction. Presented article is focused on mechanical analysis of the rotating mandrel for cold forming of tubes with shaped internal
surface. As a proposed material of the tool was selected heat-treated tool steel. Analyses were performed with selected configuration of the bearings. One bearing was configured as radial and second bearing was configured as radial-axial. A result shows stresses in the mandrel and
deformation of the mandrel under a load of forming pressure. Obtained results have potential to enhance knowledge in the area of construction of the forming tools.
Keywords: Forming, tube, mandrel, bearing, stress.
