Score cut compact mode sectioning method of cold rolled aluminum roll

Abstract

The invention discloses a score cut compact mode sectioning method of a cold rolled aluminum roll. In a score cut sectioning production line of cold rolled aluminum rolls, liftable flattening and tensioning device sets are respectively arranged before and behind a separation disc and used for fixing the height of belt materials at the separation disc so that a wrap angle exists between the belt materials and the separation disc and the belt materials are flattened and stabilized. Thus, a score cut machine directly builds tension with a recoiling machine. The aluminum roll undergoes lengthwise sectioning and then are flattened and tensioned by the flattening and tensioning devices. Stable separation and recoiling of the belt materials are ensured. During the whole score cut sectioning process, the belt materials are maintained at a tensioned state. Veering section can be performed on cold rolled aluminum belts which are 1.0mm to 0.1mm thick, 40mm to 2100mm wide and of an H state and an O state with the score cut compact mode sectioning method of the cold rolled aluminum roll. The quality defects of aluminum belts with uneven width, abraded and scraped surface patterns, flanging in recoiling and the like do not exist and the problems that a tension cushion is set on fire and the like are solved. Damage to the health of working staff by aluminum powder is reduced and production efficiency is improved.

Description

Technical field [0001] The invention relates to a slitting method in a slitting tight mode of cold rolled aluminum coils, which belongs to the technical field of aluminum processing. Background technique [0002] At present, the aluminum cold rolled coil slitting production line generally adopts the loose mode when multiple slitting (such as figure 1 (Shown) production, that is, the strip hangs in the looper pit in a relaxed state after slitting by the slitter knife, and after passing through the separation disc to separate, it is wound by tension between the tension pad and the coiler. In loose mode production, because the tension pad is on the exit side of the separation tray, the strip is always slack at the entrance side of the separation tray. When the strip enters the separation tray for separation, the strip is relatively free, which will cause the separation tray to jump and cause the strip Edge deformation or friction and grinding of the strip with the separation disc wi...

AI Technical Summary

Problems solved by technology

In loose mode production, since the position of the tension pad is at the exit side of the separation disc, the strip is always in a relaxed state at the entrance side of the separation disc. When the strip enters the separation disc and is separated, the strip is relatively free and will jump at the separation disc, resulting in Deformation of the edge or friction grinding of the strip and the separation disc to produce aluminum wire, resulting in uneven width of the strip and flanging of the strip after coiling; after the strip is separated by the separation disc, the strip and the coiler need to be established through a tension pad Tension, the pressure of the tension pad is too small will lead to coiling defects such as coiling deviation, staggered layers, tower shape, etc., and the coiling quality cannot meet the requirements. In order to ensure the coiling quality, it must be ensured that the tension pad is pressed tightly to effectively build tension.

The problem caused by the high pressure of the tension pad is that the sliding friction between the strip and the tension pad causes a large number of stripes, scratches, scratches, etc. on the surface of the strip, and the surface quality cannot meet the requirements; the friction between the strip and the tension pad will also produce A large amount of aluminum powder, the surface of the strip and the tension pad is polluted by the aluminum powder is very serious, and at the same time the heat generated by the friction between the strip and the tension pad will cause the tension pad to catch fire

[0003] Production practice shows that the longitudinal slitting of aluminum coils using traditional tension pads not only affects the coiling quality and surface quality of the product, but also poses a major safety hazard. At the same time, cleaning and maintaining the tension pads is time-consuming and labor-intensive, and the aluminum powder will be damaged during the cleaning process. Feiyang caused extremely heavy aluminum powder content in the air, which seriously affected the health of employees and brought great difficulties to production

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