PURPOSE: To make rolling in high rolling reduction possible without causing irregular shapes of rolling sheet due to rolling load, by supporting a back-up roll of rolling mill thoroughly along its axis by pressurized oil in oil pockets without supporting by bearings.
CONSTITUTION: A work roll 20 of rolling mill is supported by a back-up roll 22 through an intermediate roll 21, and the roll 22 is supported by a pressurized oil in statically pressurized pockets 23 provided to the inside of a supporting part 24, with a wide press. receiving area part spreading in the direction of the roll axis thoroughly. Further, the pockets 23 are communicated to a center hole 26 for oiling through throttling parts 28 provided to communicating holes 27. The load of the back-up roll in rolling is supported by the pressurized oil in the statically pressurized oil pockets 23 spreading axially in a wide range, therefore, even in ≥1,000 tons/m high rolling reduction, the rolling is performed without causing the lowering of lateral rigidity of the roll and irregular shapes of material to be rolled.
IIFUSHI JIYUNICHI
NAKASHIMA HIROE
ITAZURI YASUHIRO
NIPPON STEEL CORP
| JPS55114409A | 1980-09-03 | |||
| JPS55158807A | 1980-12-10 |
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