PURPOSE: To make the sheet thickness uniform in a transverse direction by providing divided water cooling chambers in a water cooling drum and alternately feeding and discharging cooling water to and from the respective divided water cooling chambers from a driving side and driven side.
CONSTITUTION: The space between the inside peripheral surface of the drum 1 and the outside peripheral surface of an inside cylinder 12 is formed to the plural divided cooling chambers 10 by partition plates 11. Water feed paths 17 and drain paths 18 are alternately bored to both ends of the cylinder 12 in the peripheral direction. The cooling water is fed from a water feed port 5 through a water feed pipe 13 and the water feed path 17 to the divided water cooling chambers 10. The cooling water cools the drum 1 heated by a molten steel land is heated up by the drum. The cooling water is then drained through the respective drain paths 18 and a manifold 4 from a drain port 6. The driving side D and driven side W of the drum 1 are alternately distributed with high-temp. parts and low-temp. parts and the average temp. and expansion size on both sides are made the same. The difference in the sheet thickness size in the transverse direction is decreased and the sheet thickness is made uniform by the above-mentioned method.
HASHIMOTO RITSUO
TANIZAKI KEIJI
| JPS4738624A |
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