The Features of Using Recycled Material Scrap in Manufacture of High-Strength Cast-Iron Castings   Full text

E.V. Menyailo, V.E. Khrychikov, T. V. Semenova, Yu. A. Mushenkov, S.V. Menyailo

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

Metall. Min. Ind., 2009, Vol. 1, No. 1, pp. 25-28

UDC 669.131.622:669.74

Abstract

The quantitative analysis of distribution of MgS inclusions on sulphur prints of 2200 kg roll revealed a minimum quantity of inclusions in the surface layer of casting up to a depth of 6-7 mm, high concentration in the hot top and at a depth of ~25 mm. The pouring gate system corresponds to data of smelting chemical analysis, and casting scrap contains less amount of sulphur. These features of MgS distribution in recycled material scrap are necessary to be considered when burdening and smelting highstrength cast-iron.

CASTING, HIGH-STRENGTH CAST-IRON, RECYCLED MATERIAL SCRAP, “BLACK SPOTS”