Understanding the regulation ability of roll bending on strip shape in a CVC-6 tandem cold mill using a 3D multiple stand FE model

Lianjie, Li; Xie, Haibo; Zhang, Tao; Huo, Mingshuai; Pan, Donald; Wu, Hui; Chen, Fenghua; Liu, Tianwu; Li, Xingsheng; Xu, Lihua; Liu, Hongqiang; Jiang, Zhengyi

doi:10.1016/j.jmapro.2023.06.028

Cited by 12 publications

(3 citation statements)

References 20 publications

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“…Figure 13 shows a schematic representation of each dimension of the strip during operation. The steps to identify the two types of side scrap blockage risks mentioned above are as follows: (1) According to the cold rolling production plan, the hot state width data of the full length of the strip under the plan measured in the hot rolling process is obtained, and the full-length cold state width of the strip is calculated as shown in Equation (6).…”

Section: Identification Of the Scrap Blockage Riskmentioning

confidence: 99%

“…where Wi C and Wi H are the cold and hot widths of the strip; i is the position in the length direction of the strip; α is based on empirical data from industrial sites on the changes in width dimensions of strips after hot rolled and after cooling, usually taking a value of 1.01 to 1.02. (1) According to the cold rolling production plan, the hot state width data of the full length of the strip under the plan measured in the hot rolling process is obtained, and the full-length cold state width of the strip is calculated as shown in Equation (6).…”

Section: Identification Of the Scrap Blockage Riskmentioning

confidence: 99%

“…The raw material of the PL-TCM is usually the hot-rolled strip, which often has defects such as irregularity and cracks on the sides, so it often needs side trim treatment before rolling [2][3][4]. In the PL-TCM, the hot-rolled strip after shearing, welding, and pickling, in front of the entrance to the tandem cold mill is arranged with a side trimmer equipment, used to trim both sides of the strip according to the required width to provide protection for the stable operation of the tandem cold rolling process [5,6].…”

Section: Introductionmentioning

confidence: 99%

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Research on the Pre-Control of Side Scrap Blockage Failure during Trimming with the Side Trimmer

Wu,

Wang,

Yang

et al. 2023

Metals

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In the coupled pickling line and tandem cold mill (PL-TCM), the hot-rolled strip needs to be trimmed on both sides of the strip before the tandem cold rolling process to ensure stable operation of the rolling process. The equipment for trimming the strip is the side trimmer, and during trimming a failure of the side scrap blockage is often caused by the variation in the width of the hot-rolled strip and the deviation during the actual operation. For this problem, this paper established a finite element model of strip trimming by side trimmer, analyzed the influence of side scrap width, structure parameters, and strip specifications on the equivalent plastic strain at the trimmed position of the strip, and obtained the influence law of each factor during the trimming process. On this basis, by collecting the historical data of side scrap blockage failure of the side trimmer, the threshold value of the side scrap width setting is obtained. Combining the width data of the hot-rolled strip and the actual operation status monitoring of the strip in the inlet section of the PL-TCM, the side scrap blockage risk identification function and the speed reduction strategy of the side trimmer are designed to form the side scrap blockage pre-control model together. After applying the side scrap blockage pre-control model to a PL-TCM, a 40.5% reduction in side scrap blockage failures was achieved compared with the same length of time before the application, which achieved satisfactory results.

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Section: Identification Of the Scrap Blockage Riskmentioning

confidence: 99%

Section: Identification Of the Scrap Blockage Riskmentioning

confidence: 99%