冷轧带钢表面质量评价模型构造方法

Construction Method of Surface Quality Evaluation Model for Cold-Rolled Strip Steel

冷轧带钢表面质量评价是一个与多种影响因素相关的十分复杂的问题,其中表面缺陷种类繁多,其成因复杂,与之相关的数量、等级、位置、分布特性等不同程度地影响着表面质量.将带钢表面质量抽象成多因素、多层次和多方案情况下的系统,从而将质量评价问题转化成了分析决策问题.通过各层次对质量影响因素权值的确定,提供了一个比较完善的表面质量评价指标体系.该方法保证了带钢表面质量评价的科学性与精确性,给出了应用实例,验证了该方法的实用性和有效性.

The surface quality evaluation of cold rolled strip steel is a complex problem involving many influencing factors among which many different causes of formation of surface defects are possible and the amount, level, position and distribution of surface defects affect differently the surface quality. Abstracting the surface quality from those factors and regarding it as a multifactor, multi-hierarchy and multi-scheme system by means of AHP （analytic hierarchy process）, the quality evaluation problem can be transformed into an analysis program and decision making problem. A relatively perfect surface quality evaluation index system is thus provided by determining the weights of all influencing factors on surface quality at different levels. This system is available to ensure the scientific and precise evaluation, and an application example is given to verify its practicality and validity.