US 2019/0337036 A1 · Cut-To-Length Steel Coil Processing Line With Slurry Blasting Descaling Unit

Abstract

A cut-to-length line for processing coiled sheet metal having a thickness of greater than 0.200 inches has an uncoiler, a descaler, and flattening machinery which may be a stretcher leveler or a temper mill. The line is operated in an advancement mode by (i) the advancing the sheet metal through the line; and (ii) descaling the sheet metal in the descaler. In one aspect, when a length of sheet metal to be stretch leveled is positioned in the stretcher leveler, the line may be operated in an idle mode by: (i) stopping the advancement of the sheet metal from the uncoiler through the descaler; (ii) stopping descaling of the sheet metal in the descaler; and (iii) stretch leveling the length of the sheet metal. When stretch leveling is complete, the line may be operated in the advancement mode.

Claims20

Dependent claims

In a cut-to-length steel coil processing line having an uncoiler followed by descaler followed by a stretcher leveler followed by a shearer followed by a stacking apparatus, all arranged to sequentially process a continuous length of sheet metal having a thickness of greater than 0.200 inches, a method comprising:

operating the uncoiler, the descaler, and the stretcher leveler in an advancement mode by (i) the advancing the sheet metal from the uncoiler through the descaler to the stretcher leveler;
and (ii) descaling the sheet metal in the descaler;
when a length of sheet metal to be stretch leveled is positioned in the stretcher leveler, operating the uncoiler, the descaler, and the stretcher leveler in an idle mode by:
(i) stopping the advancement of the sheet metal from the uncoiler through the descaler;
(ii) at least reducing descaling of the sheet metal in the descaler;
and (iii) stretch leveling the length of the sheet metal with the stretch leveler;
and
when stretch leveling the length of the sheet metal with the stretch leveler is complete, operating the uncoiler, the descaler, and the stretcher leveler in the advancement mode.

5 more elements

In a cut-to-length steel coil processing line having an uncoiler followed by a temper mill followed by descaler cell followed by a shearer followed by a stacking apparatus, all arranged to sequentially process a continuous length of sheet metal having a thickness of greater than 0.200 inches, a method comprising:

operating the uncoiler, the temper mill, and the descaler in an advancement mode by (i) the advancing the sheet metal from the uncoiler through the temper mill to the descaler;
and (ii) descaling the sheet metal in the descaler;
when a desired length of sheet metal to be cut to length extends past the shearer, operating the uncoiler, the temper mill, and the descaler in an idle mode by:
(i) stopping the advancement of the sheet metal from the uncoiler through the temper mill and through the descaler;
(ii) at least reducing descaling of the sheet metal in the descaler;
and (iii) cutting the sheet metal to the length with the shearer;
and
when the sheet metal is cut to the length, operating the uncoiler, the temper mill, and the descaler in the advancement mode.

5 more elements

Dependencies are inferred from the claim text.

Cut-To-Length Steel Coil Processing Line With Slurry Blasting Descaling Unit

Life of this patent

Cut-To-Length Steel Coil Processing Line With Slurry Blasting Descaling Unit

Life of this patent

Abstract

Claims20