MISIS National University of Science and Technology, Moscow, Russia

E. R. Guseynov, Postgraduate Student, Dept. of Metal Forming, e-mail: eduardguseinov97@yandex.ru
A. S. Aleshchenko, Cand. Eng., Associate Prof., Head of the Dept. of Metal Forming, e-mail: aleschenko.as@misis.ru

Vyksa Branch of the MISiS National University of Science and Technology, Vyksa, Russia
A. N. Fortunatov, Associate Professor, Dept. of Metal Forming Technology and Equipment, e-mail: fortan1979@mail.ru
A. V. Korol, Cand. Eng., Associate Prof., Dept. of Metal Forming Technology and Equipment, e-mail: korol_av@omk.ru

This paper examines the wear of the working tool of a two-high screw rolling mill using QForm, a software package for modeling metal forming (MF) processes. The influence of tool setup factors on wear and, consequently, the quality of the resulting pipe geometry is relevant as the range of seamless pipes with high chromium content expands. The program was used to simulate the piercing process in seamless pipe production. The geometric dimensions of the rolls, guides, and plugs of the MISiS-130D mill were used to model and construct the deformation zone. A 3D model of the deformation zone with a tool was created in SolidWorks and loaded into QForm. The piercing simulation was performed by varying the zone parameters: ovalization coefficient, feed angle, and relative reduction in the pitch point. The resulting pierced shells had identical geometry. The wear study was conducted using simulation modeling with numerical methods for solving problems in metal forming processes. The calculations were performed using the “Wear” subroutine for the tool in the QForm software package. The tool-workpiece contacts were divided into several cross-sections. Wear measurements were taken in these cross-sections for the roll, plug, and guide. Average wear values were calculated. Using a full factorial experiment, mathematical regression models were constructed to describe the relationship between roll, plug, and guide wear during piercing. The influence of model factors on wear magnitude was determined.
This work was completed as part of the integrated project “Development and Implementation of Integrated Technologies for the Production of Seamless Pipes from New-Generation Steels with Controlled Corrosion Resistance under Harsh Operating Conditions for the Fuel and Energy Complex of the Russian Federation” under Agreement No. 075-11-2025-017 of February 27, 2025, in accordance with Russian Government Resolution No. 218 of April 9, 2010.

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