摘 要

随着用户对带材平直度要求的不断提高,带材平直度的控制和改善显得日益重要。拉伸弯曲矫直技术是消除带材板形缺陷,改善带材质量的重要途径。由于拉伸弯曲矫直过程涉及拉弯、弹复等多方面问题,变形十分复杂,如何准确的定量的描述这一变形过程成为关键。因此对其展开研究,具有重要的理论和实际意义。

本文根据五辊矫直机的功用,讨论了辊缝设定原则,运用弹塑性弯曲理论建立了力学模型,得出了辊缝设定简明计算式；讨论了当厚度、材质变化时带钢的矫直质量对辊缝误差的敏感性及辊缝设定所需的精度级别;针对冷轧带钢引头矫直问题,分析了五辊矫直机矫直辊压下量与带钢来料厚度的关系,并介绍了矫直辊压下量的调整方法.文中主要讨论五辊矫直机力能参数的计算,结合实际生产矫直功率值,对三种矫直力矩的计算模型进行对比,得出更符合生产实际的计算模型。

关键词：五辊；矫直机；原理；结构；校核

Abstract

With the continuous improvement of the demand for strip flatness, it is increasingly important to control and improve the strip flatness. Tensile bending straightening is an important way to eliminate the defect of strip shape and improve the quality of strip. Because the process of tensile bending straightening involves many problems, such as bending, elastic recovery and so on, the deformation is very complex, how to accurately and quantitatively describe this deformation process becomes the key. Therefore, it is of great theoretical and practical significance to study it.

According to the function of the five-roll straightener, this paper discusses the principle of roll seam setting, establishes the mechanical model by elastic-plastic bending theory, obtains the simple calculation formula of roll seam setting, discusses the sensitivity of strip straightening mass to roll seam error and the precision level of roll seam setting when the thickness and material change. This paper mainly discusses the calculation of the force energy parameters of the five-roll straightener, and compares the calculation models of the three straightening moment with the actual production of the straightening power value, and obtains more  in line with the actual production calculation model.

Keywords: Five rollers; Straightener; Principle; Structure; Check