| 摘要 |
PURPOSE:To make continuous casting of square ingots without causing internal cracks or center segregation by making continuous press forging from four faces of an ingot in the direction of opposite sides near the point of completion of solidification of the square ingot. CONSTITUTION:An ingot is screwed down by giving reciprocating motion to a forging die 7 in the direction of arrows 8 and 8' aiming at tip part of solidification which is a suction area of condensed molten steel. Screwing down is performed on a pair of opposite sides of the square ingot and remaining opposite sides alternately. Necessary screw down area is tip part of solidification. However, the length of the forging die 7 is determined making some allowance for the length.
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