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US 2003/0037583 A1Published application
Rolling method and line for rails or other sections
AssigneeDaniel & C. Officine Meccaniche S.P.A.
InventorsLoris Maestrutti, Giorgio Lavaroni, Stefano Zuttion
Life of this patent
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Abstract
Rolling method and line for rails or other sections starting from a steel bar, including a roughing step and a finishing step. The roughing step provides use of a two-high reversible roughing stand, or BDM (Break-Down Mill), associated with a reversible edging stand (RES), which can be located irrespectively upstream or downstream of the BDM stand.
Claims21
A rolling method for rails or other sections starting from a steel bar, comprising
- a roughing step to shape said steel bar into a roughened shape comprising passing said steel bar through means of at least a Break-Down Mill (BDM) stand comprising a two-high reversible roughing stand, and
- a finishing step for finishing said steel bar having a roughened shape,
- wherein said roughing step provides passing said steel bar through at least a Reversible Edging Stand (RES) located irrespectively upstream or downstream of said BDM stand,
- wherein said RES comprises two first working rolls shaped to define one grooved profile having a cross-section substantially rectangular or squared,
- wherein said BDM stand has second working rolls shaped so as to define a plurality of grooved profiles, wherein said plurality of grooved profiles comprises a first grooved profile with a substantially rectangular cross-section in which said bar passes at least once, and
- wherein said grooved profile of said first working rolls is substantially aligned with said first grooved profile of said second working rolls.
3 more elements
A rolling line for rails or other sections starting from a steel bar, comprising
- a roughing assembly comprising a Break-Down Mill (BDM), comprising at least a two-high reversible roughing stand, able to receive at inlet said steel bar, and
- a finishing train arranged downstream of said roughing assembly,
- wherein said roughing assembly comprises at least a Reversible Edging Stand (RES) located irrespectively upstream or downstream of said BDM stand,
- wherein said RES comprises two first working rolls shaped so as to define one grooved profile having a cross-section substantially rectangular or squared,
- wherein said BDM stand has second working rolls shaped so as to define a plurality of grooved profiles, wherein said plurality of grooved profiles comprises a first grooved profile with a substantially rectangular cross-section in which said bar is able to pass at least once, and
- wherein said grooved profile of said first working rolls is substantially aligned with said first grooved profile of said second working rolls.
3 more elements
Dependencies are inferred from the claim text.