A new method for evaluating wedges of steel plates and strips  

作　　者：Xiao-bao Ma Xiao-xin Ma Tao Wang Zhong-kai Ren Yu-cheng Ren 

机构地区：[1]College of Mechanical and Vehicle Engineering,Taiyuan University of Technology,Taiyuan 030024,Shanxi,China [2]Ministry of Education Engineering Research Center of Advanced Metal Composite Forming Technology and Equipment,Taiyuan University of Technology,Taiyuan 030024,Shanxi,China [3]National Key Laboratory of Metal Forming Technology and Heavy Equipment,Taiyuan University of Technology,Taiyuan 030024,Shanxi,China [4]China National Heavy Machinery Research Institute Co.,Ltd.,Xi'an 710018,Shaanxi,China [5]Faculty of Mechanical Engineering,Hebei University of Architecture,Zhangjiakou 075000,Hebei,China

出　　处：《Journal of Iron and Steel Research International》2024年第7期1719-1735,共17页钢铁研究学报（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant No.52305405);the Natural Science Foundation Research Program of Shanxi Province (Grant No.202203021222121);the Major Project of Science and Technology of Shanxi Province (Grant No.20181102016);the Chinese Postdoctoral Science Foundation (Grant No.2021M702544);the Central Government Guides the Special Fund Projects of Local Scientific and Technological Development (YDZX20191400002149);the Open Project of Research Institute of Hai'an-Taiyuan University of Technology (Grant No.2023HA-TYUTKFYF008);the School Fund of Taiyuan University of Technology (Grant No.2022QN007).

摘　　要：To overcome the inaccuracy problem of the traditional wedge evaluation of steel plates and strips caused by the ran-domness of the thicknesses of two local points and improve the reliability of the wedge index,the double-centroid method for the wedge evaluation was proposed,and a model based on the centroid theory was established.Meanwhile,an integral model for the discrete thickness values of the cross-section profiles was derived.The discussion focused on the distinct characteristics of the two-point method,asymmetric method,and double-centroid method in evaluating the asymmetric distribution of cross-sections.The three methods were employed to evaluate the wedge values of both the theoretical and measured cross-sections of steel plates and strips,and the accuracies of three wedge evaluation models were analyzed and discussed.The results showed that the double-centroid method objectively reflects the degree and variation characteristics of the wedge values of the cross-sections of steel plates and strips,and this method is feasible,reliable,and outstanding.

关 键 词：Steel plate and strip WEDGE Two-point method Double-centroid method Reliability 

分 类 号：TG142.1[一般工业技术—材料科学与工程]