Research on surface quality evaluation model of hot-rolled coil based on fuzzy analytic hierarchy process
As an important raw material in the steel process,the surface quality of hot-rolled coil has a significant impact on the quality of steel products,and it is of great significance to determine the surface quality of hot-rolled coil efficiently and accurately.At present,there are some problems in the surface quality evaluation of hot-rolled coils,such as the design of the judgment rules is not objec-tive,the quality factors covered by the rules are too few,and the level of judgment analysis is low.Based on the fuzzy analytic hierarchy process(FAHP)and experiences of the experts,the hierarchi-cal structure model of hot-rolled coil surface quality evaluation was constructed,and the membership function selection and function construction were carried out based on the fuzzy mathematical theory,and the defect classification membership matrix was formed,and the comprehensive evaluation of the surface quality of hot-rolled coil was realized according to the statistical analysis method of steel coil surface meshing.By comparing with the judgment data of the production site,the validity of the model results is verified,which can reduce the labor cost of judgment,improve the judgment efficiency,and improve the intelligent level of quality control.
hot-rolled coilsurface qualityfuzzy analytic hierarchy process(FAHP)membershipgrid-basedquality control
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