Abstract
Results of an investigation and fabrication of a ceramic drawing tool based on zirconia partially stabilized by yttrium oxide and the combined stabilizing additives Y2O3 + CeO2 and Y2O3 + MgO, which increase the heat resistance of the materials, are presented. The developed ceramics based on ZrO2 and stabilized by 2% Y2O3 by chemical coprecipitation with a CeO2 additive has the following parameters: an open porosity of 2.1%, an apparent density of 5.60 g/cm3, an ultimate bending strength of 450 MPa. In a ceramic based on ZrO2 and stabilized by 5% Y2O3 by the method of ceramic sintering the corresponding parameters are 3%, 5.62 g/cm3, and 271 MPa. An experimental batch of zirconia drawing matrices has been produced and tested in tube drawing. Mandrel-free drawing of tubes made of stainless steel of grades 08Kh18N10, 12Kh18N10T, and ÉI702, copper of grade M1, and titanium alloy of grade VT1-0 and long-mandrel drawing of steel of grade 12Kh18N10T occurred stably and without sticking of the metal to the die or any damage to the tubes or dies.
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Translated from Ogneupory i Tekhnicheskaya Keramika, No. 5, pp. 14–20, May, 1996.
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Karaulov, A.G., Gal'chenko, T.G., Chudnova, N.M. et al. Zirconia-base ceramics for drawing tools. Refractories 37, 156–162 (1996). https://doi.org/10.1007/BF02307360
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DOI: https://doi.org/10.1007/BF02307360