| 摘要 |
PURPOSE:To produce economically plural kinds of beam blanks with a single continuous casting device by determining sizes with the flanging width kept at a specified value with all kinds of beam blanks and performing continuous casting. CONSTITUTION:The spacing distance 9a (flanging width) between the web surface 7a and flange end 8a of a beam blank 1a as well as the spacing distance 9b (flanging width) between the web surface 7b and flange end 8b of a beam blank 1b are made the same. There is therefore no need for moving the positions of flange end support rolls 4b, 4d and a web support roll 2b even if the size of the beam blank differs. Flange end support rolls 4a, 4c and a web support roll 2a need be moved in position in the stage of changing the blank 1a to 1b, but the widths 9c, 9d are the same and therefore the rolls 4a, 4c and the roll 2a are moved in position without breaking the mutual positional relation. |
