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Influence of electrical steel sheet textures on their magnetization curves

Mazgaj W., Warzecha A.

Archives of Electrical Engineering

2013

Vol. 62, nr 3

425--437

The Goss texture is a characteristic feature of grain-oriented transformer steel sheets. Generator sheets, which are produced as non-oriented steel sheets, should have isotropic features. However, measurement results of generator sheets, confirmed by crystallographic studies, indicate that these sheets are characterized by certain, quite significant anisotropy. The first purpose of this paper is to present the influence of textures of generator and transformer steel sheets on their magnetization characteristics. The second aim is to propose a method which takes into account the sheet textures in the calculations of magnetization curves. In calculations of magnetization processes in electrical steel sheets, models in which the plane of a sheet sample is divided into an assumed number of specified directions are used. To each direction a certain hysteresis loop, the so-called direction hysteresis, is assigned. The parameters of these direction hystereses depend, among other things, on the texture type in these steel sheets. This paper discusses the method which calculates the parameters of these direction hystereses taking into account the given sheet texture. The proposed method gives a possibility of determining the magnetization characteristics for any direction of the field intensity changes.

Zagadnienia metalurgiczne produkcji blachy transformatorowej o zorientowanym ziarnie

Wypartowicz J., Podorska D.

Hutnik, Wiadomości Hutnicze

2004

Vol. 71, nr 5

221-225

W artykule omówiono główne zagadnienia technologii produkcji blachy transformatorowej ze stali krzemowej o zorientowanym ziarnie. Przedstawiono funkcjonowanie drugiej fazy działającej jako inhibitor rekrystalizacji wtórnej. Przedyskutowano wpływ poszczególnych mikrododatków na własnosci stali transformatorowej. Zdefiniowano najważniejsze etapy cyklu produkcyjnego i przedstawiono nowe koncepcje optymalizacji technologii.

The article discusses main technological topics of transformer sheet production of grain oriented silicon steel. The function of second phase acting as the inhibitor in secondary recrystallization as well as the influence of micro - alloying elements on the properties of transformer steel were presented. The most important stages of production cycle were defined and the new concepts of technology optimization were presented.