Temat: cross rolling - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: The Problem of Material Fracture Prediction in Cross Rolling Processes
Autorzy:: Pater, Zbigniew
Tomczak, Janusz
Bulzak, Tomasz
Zniszczyński, Andrzej
Powiązania:: https://bibliotekanauki.pl/articles/102559.pdf
Data publikacji:: 2018
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: materials fracture
cross rolling
FEM
pękanie materiałów
walcowanie poprzeczne
MES
Opis:: The paper deals with the problem of material fracture prediction in metal forming processes. It was found that the application of well-established solutions for ductile fracture prediction to the modelling of cross rolling processes leads to serious errors. These errors result from the fact that the limit value of the damage function determined via uniaxial tensile and compression tests is too low. Therefore, it is necessary to devise a new test in which the state of stress is similar to that in a cross wedge rolling process characterized by the occurrence of alternating compressive and tensile stresses.
Źródło:: Advances in Science and Technology. Research Journal; 2018, 12, 4; 184-189
2299-8624
Pojawia się w:: Advances in Science and Technology. Research Journal
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Study of Cross Wedge Rolling Process of BA3002-Type Railway Axle
Autorzy:: Pater, Zbigniew
Powiązania:: https://bibliotekanauki.pl/articles/2172355.pdf
Data publikacji:: 2022
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: cross wedge rolling
railway axle
FEM
Opis:: The paper deals with the concept of solid railway axle rolling using tools (rolls) in which the forming zones of individual workpiece steps are separated. Two types of tools were analysed, which were characterised by flat (typical solution) and convex (novel solution) forming surfaces of the wedge. Using the software Forge® NxT, simulations were performed of the rolling processes of the rail axle. Distributions of temperature, damage function, effective strain as well as force and torque courses were analysed. The results showed that it is possible to produce solid railway axles using the CWR method and confirmed the use of tools with a convex forming surface.
Źródło:: Advances in Science and Technology. Research Journal; 2022, 16, 2; 225--231
2299-8624
Pojawia się w:: Advances in Science and Technology. Research Journal
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: A Comparison of Two-Roll and Three-Roll Cross Wedge Rolling Processes
Autorzy:: Pater, Zbigniew
Powiązania:: https://bibliotekanauki.pl/articles/2201884.pdf
Data publikacji:: 2023
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: cross wedge rolling
FEM
tools
load
energy
CWR
Opis:: Cross wedge rolling (CWR) is used for producing stepped axles and shafts as well as die forging preforms. In current industrial practice, CWR conducted with two tools is predominantly used, with the wedges mounted on rolls or flat tool plates. However, CWR can also be performed with the use of three wedge rolls. This paper begins with a review of previous studies on CWR conducted with the use of three rolls. After that, numerical simulations of two- and three-roll CWR processes for the same shaft are described. Obtained numerical results are then used to compare the two processes in terms of material flow kinematics, material temperature, stresses and strains, failure modes, as well as load and energy parameters. Finally, the Conclusions section presents the advantages of three-roll cross wedge rolling, providing a good starting point for further research on this promising forming method.
Źródło:: Advances in Science and Technology. Research Journal; 2023, 17, 1; 252--266
2299-8624
Pojawia się w:: Advances in Science and Technology. Research Journal
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Numerical Analysis of the Cross-Wedge of a Hollow Rail Axle
Autorzy:: Pater, Zbigniew
Lis, Konrad
Walczuk-Gągała, Patrycja
Powiązania:: https://bibliotekanauki.pl/articles/101874.pdf
Data publikacji:: 2020
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: cross wedge rolling
rail axle
FEM
walcowanie klinów poprzecznych
oś szynowa
MES
Opis:: The article presents an innovative method of manufacturing hollow rail axles using three combined wedge rolls. The proposed solution was evaluated using numerical simulation. Two cases of forming, differing in the wall thickness of the billet, were analysed. The geometry of the formed axles, distributions of the effective strain, temperature and damage function were presented. Moreover, the changes to the forces and torques acting on each roll were presented.
Źródło:: Advances in Science and Technology. Research Journal; 2020, 14, 1; 145-153
2299-8624
Pojawia się w:: Advances in Science and Technology. Research Journal
Dostawca treści:: Biblioteka Nauki

Artykuł

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