| 摘要 |
PROBLEM TO BE SOLVED: To provide a high draft rolling mill that the increased size of the rolling mill itself is evaded and high draft rolling is possible. SOLUTION: Relating to this high draft rolling mill, two upper and lower work rolls 1 and two respective back-up rolls 2 whose diameter is smaller than or equal to the diameter of the work rolls, which are divided into plural in the axial direction and abutted on each work roll 1 are arranged in a roll housing 3 and the two upper and lower work rolls are driven with a motor, and a highly reducing mechanism is provided for support blocks 4 with which the back-up rolls 2 divided into plural rolls are fixed and crowning mechanism is provided for every bearing.
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