Wszystkie pola: Bulzak, Tomasz - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Multi Wedge Cross Rolling of Axle Forgings
Autorzy:: Bulzak, Tomasz
Powiązania:: https://bibliotekanauki.pl/articles/28099513.pdf
Data publikacji:: 2023
Wydawca:: Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:: cross wedge rolling
fracture
multi wedge tools
FEM
axles
Opis:: This paper presents the results of research into the cross wedge rolling (CWR) process of axle forgings. The presented results concern the parallel rolling process with two wedges. The use of two parallel wedges is aimed at shortening the tool length (increasing productivity) and reducing the values of wedge opening angles and increasing the forming angles, so that the condition 0.04 ≤ tgαtgβ ≤ 0.08 is maintained to guarantee the highest quality forgings. The article analyses the influence of the design of the double wedge tool on the geometric correctness of the forgings obtained, the value of the failure criterion and the force parameters of the process. The results obtained show that the use of multi wedge tools improves rolling conditions by increasing productivity and reducing the tendency of the material to crack with appropriately selected tool parameters.
Źródło:: Archives of Metallurgy and Materials; 2023, 68, 2; 697--701
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

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

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