ABSTRACT

The overall quality of the steel wire is composed of the mechanical properties, the key process parameters, the geometrical parameters, surface quality, etc. A uniformity and comprehensive quality evaluation method of steel product based on the improved process capability index and TOPSIS (Technique for Order Preference by Similarity to Ideal Solution) is proposed. First, the uniformity of the process parameters is described by the volume ratio between the process data area and the specification area which is calculated via kernel density estimation. The relative closeness of the newly added batches is obtained by TOPSIS, which is used as a comprehensive quality evaluation index. A time dimension is added to the radar chart to visualize high-dimensional data, which is intuitive to compare the differences between batches. The results show that the evaluation method can accurately obtain the uniformity and comprehensive quality of steel products.

摘要

钢丝综合质量由力学性能、关键工艺参数、几何参数、表面质量等组成。 一种基于改进工艺能力指数和TOPSIS（Technique for提出了通过与理想解决方案相似的顺序偏好）。首先，过程参数的均匀性由过程数据区与通过核密度估计计算的规格区之间的体积比来描述。通过TOPSIS得到新增批次的相对紧密度，作为综合质量评价指标。雷达图增加时间维度，可视化高维数据，直观比较批次间的差异。