针对带钢切边过程现场与下游客户缺少统一的切边质量评价标准的问题,结合圆盘剪的设备与剪切工艺特点,经过大量现场试验与理论研究,在分析了带钢切边过程所存在的扣边、毛刺、切断比失衡三大主要质量缺陷的基础上,提出了一套有效实用的带钢切边质量评价方法.将带钢切边综合质量评价函数作为目标函数,圆盘剪间隙量与重叠量作为优化变量,开发出一套圆盘剪切边过程间隙量与重叠量综合优化设定的技术,并将其应用到某钢厂1420生产线,大大提高了带钢切边质量,扣边、毛刺和切断比失衡缺陷改判率从技术应用前的0.52%下降到0.03%,同时保障了无返修,为企业创造了较大的经济效益,具有进一步推广应用的价值.
In view of the lack of uniform evaluation criterion between strip edge cutting process and downstream cus-tomer,an effective and practical quality evaluation method on strip cutting edge is developed which is on the basis of the analysis of three main quality defects including edge defect,veining defect and cut-off ratio imbalance after a lot of field experiments and theoretical research,combining the equipment and cutting process characteristics. Then,the comprehen-sive quality evaluation function of the strip cutting edge is used as the objective function,and the clearance quantity and the overlap quantity as the optimization variables,a set of integrated optimization and setting techniques for clearance and overlap in the process of rotary shears are developed. It has been applied to a steel production line 1420. The strip trimming quality is greatly improved,and the commuted rate of edge defect,veining defect and cut-off ratio imbalance reduced from 0.52%before the technology application down to 0.03%,which protects the free repair. Thus,it creates a greater economic benefit for enterprises and has the value for further popularization and application.
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