Rolling mill stand and related rolling mill for longitudinally rolling rod-shaped bodies
AssigneeDanieli & C. Officine Meccaniche SpA
InventorsEttore Cernuschi, Fabrizio Marini, Aristide Giacomo Bertelli
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Abstract
A rolling mill stand and related rolling mill for rolling rod-shaped bodies, even large in size, which meets the requirement of stiffness uniformity of the rolling mill stands in the transversal direction, all the hydraulic capsules being firmly fixed to the external structure of the rolling mill and providing for the side change of the rolls of each stand. The arrangement of rolling rolls and related extensions of each rolling mill stand is such to avoid problems of corrosion and damaging to the extensions themselves and to the reducers due to the drainage of the cooling waters.
Claims20
A rolling mill for rolling rod-shaped bodies, defining a rolling axis, comprising a plurality of rolling mill stands arranged in sequence and tilted by a 180° angle with respect to the previous one, to the vertical axis passing through the rolling axis, each rolling mill stand comprising
- a fixed external structure,
- three working rolls arranged in a roll-holder cartridge, said roll-holder cartridge being movable from a working position inside the fixed structure, at said rolling axis, to a side extraction position outside the fixed structure for changing the working rolls,
- wherein at least one respective hydraulic capsule is provided for each working roll,
- wherein, in each rolling mill stand, a first hydraulic capsule is horizontally arranged to allow said roll-holder cartridge to be extracted along a horizontal plane,
- wherein said at least one respective hydraulic capsule is firmly fixed to the fixed structure, for each working roll,
- and wherein the roll-holder cartridges of the rolling mill stands are configured to be alternatively extracted from the various stands of the rolling mill on the two sides of the rolling mill itself along said horizontal plane.
A rolling mill for rolling rod-shaped bodies, defining a rolling axis, comprising a plurality of rolling mill stands arranged in sequence and tilted by a 180° angle with respect to the previous one, to the vertical axis passing through the rolling axis, each rolling mill stand comprising
- a fixed external structure,
- three working rolls arranged in a roll-holder cartridge, said roll-holder cartridge being movable from a working position inside the fixed structure, at said rolling axis, to a side extraction position outside the fixed structure for changing the working rolls,
- one horizontally arranged hydraulic capsule and two hydraulic capsules inclined with respect to the vertical axis and configured so as to include an opening of a respective piston such as to allow an extraction of the roll-holder cartridge along a horizontal plane from the side opposite to the horizontally arranged hydraulic capsule,
- wherein all hydraulic capsules are firmly fixed to the fixed structure,
- and wherein the roll-holder cartridges of the rolling mill stands are configured to be alternatively extracted from the various stands of the rolling mill on the two sides of the rolling mill itself along said horizontal plane.
Dependencies are inferred from the claim text.