Shrinkage Defects Elimination Methods in the Bottom Necks of Cast Iron Rolls

Shrinkage Defects Elimination Methods in the Bottom Necks of Cast Iron Rolls Full text

E. V. Menyailo

National Metallurgical Academy of Ukraine
4 Gagarin Ave., Dnipropetrovsk, 49600, Ukraine

UDC 669.131.622:669.74

Metall. Min. Ind., 2010, Vol. 2, No. 6, pp. 397-400

Abstract

The sand mold of the bottom neck often does not provide directional solidification of cast due to accelerated solidification of the roll body when casting rolls in stationary molds. To avoid hot zones and shrinkage defects in the bottom roll necks it is reasonable to make the bottom neck in metal mold with sandy-argillaceous heat-insulation. Bottom neck molding with external chill also helps solve this problem

Keywords: SHRINKAGE DEFECTS, CAST IRON ROLLS, SAND MOLD, MOLDING, CASTING, CAST

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