An early warning method for the problem of hanging edge of cold-rolled disc
A disc shearing and problematic technology, applied in the field of cold rolling, can solve the problem of not knowing whether there is hanging edge on the strip steel
Active Publication Date: 2017-08-29
SHOUGANG ZHIXIN QIAN AN ELECTROMAGNETIC MATERIALS CO LTD
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Problems solved by technology
[0003] The present invention provides an early warning method for the edge-cutting problem of cold-rolled disks, which solves or partially solves the technical problem in the prior art that the edge-cutting process of the disk does not know whether there is edge-hanging on the strip steel
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Embodiment Construction
[0015] see figure 1 According to an embodiment of the present invention, a method for early warning of a cold-rolled disc shearing edge problem includes the following steps:
[0016] Step 1, see also figure 2 , determine the calculated length of the camber according to the positional relationship between the centering detection device 2 before the disc shears, the disc shears 3, and the tension roller 4 after the disc shears, the distance L between the centering detection device 2 and the tension roller 4, and the centering detection device 2 and disc shears 3 distance L1.
[0017] Step 2, according to the response speed of the hydraulic cylinder of the correction roller 1 and the running speed of the steel strip, the deviation correction capability Y1 of the deviation correction roller 1 at the centering detection device is calculated.
[0018] Step 3. Determine the camber offset Y2 at any point according to the centerline offset curve of the hot coil, L and L1.
[0019] ...
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The invention discloses an early-warning method for an adhesion problem of a cold rolling circle shear and belongs to the technical field of cold rolling. The early-warning method for the adhesion problem of the cold rolling circle shear includes the steps that according to the position relation of a circle shear front centering detection device, the circle shear and a circle shear rear tension roller, the computing length of an edge camber is determined, and the distance L between the centering detection device and the tension roller and the distance L1 between the centering detection device and the circle shear are determined; according to the response speed of a deviation rectifying roller hydraulic cylinder and the operation speed of band steel, the deviation rectifying capacity Y1 of the deviation rectifying roller at the centering detection device is worked out; according to the center line offset curve of a hot roll, the L and the L1, the offset Y2 of any point of the edge camber is determined; according to the width curve, the single-edge minimum trimming width and the trimmed band steel of the hot roll, the width surplus Y3 of any point is determined; and the Y value of the adhesion occurrence rate is determined according to the deviation rectifying capacity Y1, the offset Y2 of the edge camber and the width surplus Y3. By means of the early-warning method for the adhesion problem of the cold rolling circle shear, whether adhesion exists or not on the band steel in the trimming process of the circle shear can be known.
Description
technical field [0001] The invention relates to the technical field of cold rolling, in particular to an early warning method for the problem of hanging edges of cold rolling discs. Background technique [0002] Disc shears are important equipment for continuous production in cold rolling mills. The continuity of their operation will directly affect the production continuity of the cold rolling production line, and also affect quality indicators such as the same plate difference, edge quality, and thickness accuracy. . Hanging side is that during the process of cutting the edge of the disc, it cannot be torn because the cutting width is too small, so it continues to stick to the strip and continue to run. Hanging edge is generally greatly affected by hot-rolled raw materials, including problems such as narrow gauge of raw materials and large camber. Hanging side defects have a relatively high proportion of disc shearing side abnormalities in cold rolling mills, but because...
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IPC IPC(8): B23D33/00
Inventor 安冬洋王付兴胡志远余威
Owner SHOUGANG ZHIXIN QIAN AN ELECTROMAGNETIC MATERIALS CO LTD