| 摘要 |
989,029. Casting processes. NIEDERRHEINISCHE HUTTE A.G. Aug, 31, 1962 [Sept. 15, 1961], No. 33556/62. Heading B3F. Effervescing steel is partially killed in the ladle by A1, then cast into an ingot mould, the amount of ingot foam drawn into the steel being reduced by physical means which reduce the currents in the steel, such as tilting the mould, using a wide-necked mould, Fig. 3, heating the top of the molten metal, supporting a metal box or a cross-shaped body 12, Fig. 7, in the top of the melt &c. |
