METHOD FOR MAKING STEEL CASTINGS Russian patent published in 2002 - IPC

Abstract RU 2192331 C2

FIELD: foundry, possibly manufacture of steel castings. SUBSTANCE: method comprises steps of placing gas permeable rod in upper portion of hot top. Said rod has inner cavity filled with exothermic charge; relation of diameters of hot top and gas permeable rod is equal to 1/(0.1-0.25) and relation of diameters of gas permeable rod and exothermic charge is equal to 1/(0.7-0.25). Combined arrangement of rod and charge allows to provide necessary heating of rod and metal in hot top at relatively small value of charge. EFFECT: enhanced efficiency of method. 1 dwg, 2 tbl

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RU 2 192 331 C2

Authors

Nikitovich V.N.

Serebrjakov S.P.

Dates

2002-11-10—Published

2000-07-05—Filed