Method to control the axial position of slabs emerging from continuous casting and relative device
AssigneeDanieli & Officine Meccaniche SpA
InventorsEstore Donini, Fausto Drigani, Cesare Galletti, Roberto Millone
Life of this patent
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Abstract
Method and device to control the axial position of slabs emerging from a continuous casting machine, providing to control the axial position of the slab (24) in correspondence with the inlet to the first rolling stand and to act in feedback on means to modify the correct position of the axis (32) of the slab (24) in a position located between the first rolling stand and the foot rolls (26) of the ingot mold (13) from which the slab (24) emerges, wherein alignment means operating inside the furnace (15) are employed to induce a controlled lateral displacement governed by the control of the axial position of the slab (24).
Claims31
Method to control the axial position of slabs emerging from the continuous casting machine applied in rolling lines comprising at least a continuous casting machine (11) with at least an ingot mold (13), an extraction and straightening assembly (12), shearing means (14), a heating and/or temperature maintenance furnace (15), a roughing or pre-finishing train (16) and a finishing train (19) defining a rolling axis (25), wherein said furnace (15) comprising a plurality of transport rollers (39) defining a substantially horizontal supporting and conveying plane for said slabs, there being included between the outlet of said heating and/or temperature maintenance furnace (15) and the inlet of said roughing train (16) lateral guides (20) and at least a descaling assembly (22), comprising the steps of:
- laterally aligining the axis (32) of said slab (24) emerging from said continuous casting machine (11) to the rolling axis (25) of a first stand of said roughing or pre-finishing train (16) or of a first stand of said finishing train (19), providing to continuously control the axial position of the slab (24) with respect to said rolling axis (25) by means of detector means (36) arranged at least upstream of the entrance of said first rolling stand and to act in feedback on alignment means operating inside said heating and/or temperature maintenance furnace (15) and cooperating with said transport rollers (39), wherein said aligment means being able to modify the position of said axis (32) by inducing a controlled lateral displacement of said slab (24) in transit on said supporting and conveying plane functionally correlated to said control of the axial position of the slab (24).
Device to control the axial position of slabs emerging from continuous casting applied in rolling lines comprising at least a continuous casting machine (11) with at least one ingot mold (13), an extraction and straightening assembly (12), shearing means (14), a heating and/or temperature maintenance furnace (15) comprising a plurality of transport rollers (39) arranged parallel to each other with their axis substantially orthogonal to the axis of feed of the slab (24) and defining a substantially horizontal supporting and conveying plane for said slab, a roughing or pre-finishing train (16) and a finishing train (19) defining a rolling axis (25), there being included between the outlet of said heating and/or temperature maintenance furnace (15) and the inlet of the roughing or pre-finishing train (16) lateral guides (20) and at least a descaling assembly (22), the device being characterised in that it comprises means (36) to control the axial position of said slab (24) with respect to said rolling axis (25), said means (36) being arranged at least upstream of a first stand of said roughing or pre-finishing train (16) or of said finishing train (19), and alignment means operating inside said heating and/or temperature maintenance furnace (15) and cooperating with said transport rollers (39), said alignment means being able to induce a controlled lateral displacement of said slab (24) in transit on said supporting and conveying plane functionally correlated to the control of said axial position made by said means (36).
Dependencies are inferred from the claim text.