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Influence of the thin-wall ratio on the limiting spinning ratio and the thinning of the AMS 5504 sheet in spinning

Kut Stanisław, Ryzińska Grażyna, Mrugała Tomasz

Hutnik, Wiadomości Hutnicze

2023

Vol. 90 nr 4

15--19

The paper contains the results of experimental research on the AMS 5504 sheet spinning process. The research was carried out on a Leifeld SFC 800 V500 two-roller metal spinning machine with a vertical axis. Various shapes of rollers and different thicknesses of sheet metal were used.The relationships between the limiting spinning ratio, thin-wall ratio and the fillet radius of roller were determined, and the occurrence of negative phenomena during the spinning process, such as wrinkling or cracking, was taken into account. The conclusions contained in the work and the developed methodology allow for a practical assessment of the possibility of producing drawpiece with given parameters by spinning.

W pracy przedstawiono wyniki badań eksperymentalnych procesu wyoblania blachy AMS 5504. Badania przeprowadzono na dwurolkowej wyoblarceLeifeld SFC 800 V500 o osi pionowej. Zastosowano różne kształty rolek i różną grubość blachy. Określono zależności pomiędzy granicznym współczynnikiem wyoblania, współczynnikiem cienkościenności i promieniem zaokrąglenia rolki, a także uwzględniono występowanie negatywnych zjawisk podczas procesu wyoblania, takich jak fałdowanie czy pękanie. Wnioski zawarte w pracy oraz opracowana metodologia pozwalają na praktyczną ocenę możliwości wytwarzania wytłoczki o zadanych parametrach metodą wyoblania.

Experimental Research on the Impact of Thin-Wall Ratio and the Fillet Radius of Forming Roller on the Limiting Spinning Ratio of AMS 5504 Sheets

Kut S., Stachowicz F., Ryzińska G., Mrugała T.

Archives of Metallurgy and Materials

2017

Vol. 62, iss. 4

2261--2266

Results of experimental investigations of metal spinning process of AMS 5504 sheets. cylindrical drawpieces with use of discs-shaped sheet with various diameter and thickness were shown in this work. Tests were performed on two roller metal spinning machine of a vertical axis Leifeld SFC 800 V500. The main objective of the study was to determine the dependence between limiting spinning coefficient, thin wall ratio coefficient and the fillet radius of forming rollers. To realize this aim required the development of an original methodology and experimental research plan. Determined relationship takes into account the occurrence of negative phenomena in the process of spinning such as wrinkling or cracking of material. Due to the possibility of prediction of these negative phenomena, determined relationship is used in the design of a metal spinning processes. On the basis on determined relationship can be done a practical assessment of the possibility of shaping with certain geometrical parameters by spinning. Obtained results were shown graphically on the diagrams and their analysis was carried.