TY - JOUR N2 - The paper presents the results of studies on the development of manufacturing technologies to cast hearth plates operating in chamber furnaces for heat treatment. Castings made from the heat-resistant G-X40CrNiSi27-4 steel were poured in hand-made green sand molds. The following operations were performed: computer simulation to predict the distribution of internal defects in castings produced by the above mentioned technology with risers bare and coated with exothermic and insulating sleeves, analysis of each variant of the technology, and manufacture of experimental castings. As a result of the conducted studies and analysis it was found that the use of risers with exothermic sleeves does not affect to a significant degree the quality of the produced castings of hearth plates, but it significantly improves the metal yield. L1 - http://www.journals.pan.pl/Content/88284/PDF/05_paper.pdf L2 - http://www.journals.pan.pl/Content/88284 PY - 2014 IS - No 4 DO - 10.2478/afe-2014-0080 KW - Innovative technologies and materials KW - High-chromium steel castings KW - Heat insulating sleeves for risers KW - Hearth plates A1 - Drotlew, A. A1 - Piekarski, B. A1 - Garbiak, M. PB - The Katowice Branch of the Polish Academy of Sciences DA - 2014 T1 - Casting of Hearth Plates from High-chromium Steel UR - http://www.journals.pan.pl/dlibra/publication/edition/88284 T2 - Archives of Foundry Engineering ER -