process for casting of steel is not easy

摘要

938,607. Casting-machines. HOESCH A.G. Sept. 29, 1960 [Oct. 3, 1959], No. 23975/62. Divided out of 938,606. Class 83 (1). Apparatus for carrying out subatmospheric treatment of bottom poured steel comprises an ingot mould 1 with a removable suction head having a connection 17 to vacuum means 22, and a second opening closable by an airtight cover 14. Inert gas may be supplied to the mould through a pipe 25.