A. V. Razinkin, T. V. Maltseva, I. S. Kamantsev, E. I. Salikhyanova

SIMULATING THE PROCESS FLOW PATTERNS OF ROD EXTRUSION FROM WROUGHT ALUMINUM ALLOYS

Extrusion is one of the main types of preparatory processing of semi-finished wrought aluminum alloy products under conditions of Kamensk-Uralsky Metallurgical Plant JSC. In the production of extruded rods, one of the main defects is the anisotropy of the properties of the output rod end induced by its insufficient deformation processing, which is caused by the features of metal flow in the deformation zone in the initial process stages. Based on the obtained results of finite element simulation in the QForm3D software package, the geometrical dimensions of the workpiece and the equipment have been selected for physical simulation under conditions of a laboratory at the Institute of Engineering Science, Ural Branch of the Russian Academy of Sciences. The simulation results are compared with the results of the physical experiment under laboratory conditions.
It proves that the selected extrusion scheme enables one to make an extruded product with the features of defect distribution in the form of an unprocessed structure in the output part of the extruded product with a length equal to two product diameters, this being consistent with the extrusion practice at the plant. This makes it possible to use a combination of computer simulation in the QForm3D software suit and the physical simulation of extrusion in a laboratory extruder at the IES UB RAS to develop recommendations on minimizing the length of the poorly processed zone in the output rod end, as well as to obtain samples of metal from these zones to estimate the possibility of recycling by using the additionally heat-treated output ends as the starting stock for smaller diameter rods.

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