IMPROVEMENT OF THE ANGULAR PRESSING PROCESS FOR BIMETALLIC PROFILES
DOI:
https://doi.org/10.34185/1991-7848.itmm.2026.01.023Keywords:
angular pressing, bimetals, movable die bottom, oxide layer, hot extrusionAbstract
An innovative method of angular hot pressing of bimetallic profiles, described in the patent “Method of Angular Pressing of Bimetallic Profiles,” is considered and summarized. The method involves preliminary deformation of the base metal through friction in the conical section of the upper tool (cone angle 20–40°), which enables the disruption of the oxide layer and improves bonding with the cladding metal. The process includes material joining within the drawing zone by means of hot upsetting, as well as the application of a movable die bottom to reduce the required pressing force. The proposed solution is primarily intended for aluminum alloys in combination with copper or stainless steel. The principles and advantages of the process are described in the context of modern bimetal manufacturing technologies.
References
Ben A.M. Features of the formation of bimetallic billets by metal forming methods, Bulletin of Zaporizhzhia Polytechnic, 2021, pp. 88–89.
Ziatina V.I., Medvediev M.I., Bobukh O.S., Samsonenko A.A., Spektor S.S. Method of angular pressing of bimetallic profiles: Patent 161837 Ukraine, IPC B21C 37/00; filed u 2025 02800; registered in the State Register of Utility Models of Ukraine on 07.01.2026; published 07.01.2026, Bulletin No. 1.
Lechner S. et al. Optimization of the indirect extrusion process of copper-clad aluminum rods by methods of statistical experimental designs and numerical analyses. Frontiers in Materials, 2021, Vol. 8. Available at: https://doi.org/10.3389/fmats.2021.663306
