A. Gontarz

Lublin University of Technology

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Z. Pater

Lublin University of Technology

Grzegorz Winiarski

Lublin University of Technology

Anna Dziubińska

Warsaw University of Technology

J. Tomczak

Lublin University of Technology

W. Weroński

Lublin University of Technology

K. Drozdowski

Lublin University of Technology

G. Samołyk

Lublin University of Technology

S. Wiewiórowska

Częstochowa University of Technology

Arkadiusz Tofil

State School of Higher Education in Chełm

J. Michalczyk

Częstochowa University of Technology

Cooperative Institutions

Lublin University of Technology

AGH University of Krakow

Częstochowa University of Technology

Silesian University of Technology

Airbus (France)

Rzeszów University of Technology

Jagiellonian University

Institute of Metallurgy and Materials Science

Centre National de la Recherche Scientifique

Materials Science & Engineering

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Cross rolling of parts with non-circular cross section

Archives of Civil and Mechanical Engineering (2008)

Z. Pater A. Gontarz W. Weroński

Section (typography)

Scope (computer science)

Structural material

10.1016/s1644-9665(12)60200-3

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Citations (10)

Forming of external steps of shafts in three slide forging press

Archives of Metallurgy and Materials (2010)

A. Gontarz R. Myszak

Materials processing

Industrial chemistry

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Citations (2)

Research the Dimensional Accuracy of C45 Steel Ring Forgings Produced by Radial Rolling

Materials (2023)

A. Gontarz Piotr Surdacki J. Michalczyk

The rolling process of rings is a commonly used method for producing annular forgings. There are two primary types of this process: radial-axial rolling and radial rolling. This article presents the research results regarding the latter, in which obtaining a product with the assumed dimensions constitutes a major problem. In industrial practice, the process parameters are based on the experience of technologists and/or by trial and error. This is why the authors considered it justified to undertake the research aimed at determining the influence of the main process parameters, that is, preform temperature and tool speed, on the shape and dimensions of the cross-section, which determine the internal and external diameters of the rolled ring. The research was based on numerical simulations and experimental studies. The results obtained proved that the higher the feed speed of the main roll, the greater the change in the cross-sectional height during rolling, and the smaller the cross-sectional deformation (the so-called fishtail). Nevertheless, a higher preform temperature reduces the final height of the ring and reduces cross-section deformation. On the basis of the obtained test results, guidelines for the process design were postulated, considering the influence of temperature and speed parameters on the final dimensions of the forging and the dimensions of the preform.

10.3390/ma17010003

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Citations (4)

New method of thread rolling

Journal of Materials Processing Technology (2004)

Z. Pater A. Gontarz W. Weroński

Screw thread

Threading (protein sequence)

10.1016/j.jmatprotec.2004.04.154

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Citations (68)

Kształtowanie przez rozpychanie kołnierza drążonego wału wirnika

HUTNIK - WIADOMOŚCI HUTNICZE (2012)

Z. Pater A. Gontarz J. Tomczak

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Citations (1)

Theoretical and experimental research of hammer forging process of RIM from AZ31 magnesium alloy

Metalurgija (2014)

A. Gontarz

Hammer

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Citations (7)

Badanie funkcji opisujących krzywe płynięcia stopu AZ61

HUTNIK - WIADOMOŚCI HUTNICZE (2009)

A. Gontarz J. Piesiak

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Citations (0)

FEM ANALYSIS OF THE FORGING PROCESS OF HUB PART FROM AZ80 MAGNESIUM ALLOY

Blucher Mechanical Engineering Proceedings (2014)

A. Gontarz Z. Pater K. Drozdowski Arkadiusz Tofil J. Tomczak

The results of theoretical analysis of metal forming process of hub forging from AZ80 magnesium alloy are presented in this paper. Calculations were made with the application of commercial software based on finite element method. Simulations were conducted for two technologies of forging: on a die hammer and on a hydraulic press. Kinematics of material flow, strains, temperature and fracture criterion according to Cockroft-Latham were analyzed. Forging force in the case of press usage and impact energy in the case of hammer usage were calculated as well. On the basis of the obtained results, the analysis of limiting phenomena, which could appear during the process, was made. These phenomena include: possibility of overlapping presence, not filling of die impression, overheating of material and cracks. On the basis of calculations of forces and energy necessary for forming, required parameters of forging machines were chosen. Theoretical verification of hub part forging technology allowed to state that it is possible to obtain final product of assumed quality. The results of calculations provided the basis for planning of experimental tests in industrial conditions.

Hammer

Overheating (electricity)

Hydraulic press

10.5151/meceng-wccm2012-16805

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Citations (0)

Numerical analysis of unconventional forging process of hollowed shaft from Ti-6Al-4V alloy

Journal of Shanghai Jiaotong University (Science) (2011)

A. Gontarz Z. Pater Arkadiusz Tofil

Material Flow

Titanium alloy

10.1007/s12204-011-1118-3