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Improvement of Rolling-cut Double Side Trimming Shear’s Shearing Quality in Heavy Plate Mill of Baosteel Co., Ltd. |
JIA Bin |
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Abstract Rolling-cut Double Side Trimming Shear is the main equipment on the shearing product line in Baosteel Heavy Plate Mill, bearing the task of trimming the heavy plate of less 50mm thick, but since the production was put into practice, there have been many problems about shearing quality. At present the “burr” and “missed cutting line” are the main shearing problems. Although some measures are taken, the results are not enough good. This situation would delay the schedule of orders, and would increase the cost of production. The reasons for the birth of “burr” and “missed cutting line” are analyzed, meanwhile, the shearing technical parameters are optimized according to the main affecting factors. Finally the effective approaches for the improvement of shearing quality are provided, and verified by the contrast experiment on product line, the results are good.
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Received: 23 June 2008
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