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A new method for evaluating wedges of steel plates and strips

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Abstract

To overcome the inaccuracy problem of the traditional wedge evaluation of steel plates and strips caused by the randomness 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.

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Acknowledgements

This work was 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), and the School Fund of Taiyuan University of Technology (Grant No. 2022QN007).

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Authors and Affiliations

  1. College of Mechanical and Vehicle Engineering, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, China

    **ao-bao Ma, Tao Wang & Zhong-kai Ren

  2. Ministry of Education Engineering Research Center of Advanced Metal Composite Forming Technology and Equipment, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, China

    **ao-bao Ma, Tao Wang & Zhong-kai Ren

  3. National Key Laboratory of Metal Forming Technology and Heavy Equipment, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, China

    **ao-bao Ma, Tao Wang & Zhong-kai Ren

  4. China National Heavy Machinery Research Institute Co., Ltd., **’an, 710018, Shaanxi, China

    **ao-bao Ma & Yu-cheng Ren

  5. Faculty of Mechanical Engineering, Hebei University of Architecture, Zhangjiakou, 075000, Hebei, China

    **ao-xin Ma

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  1. **ao-bao Ma
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Correspondence to **ao-bao Ma.

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Ma, Xb., Ma, Xx., Wang, T. et al. A new method for evaluating wedges of steel plates and strips. J. Iron Steel Res. Int. (2024). https://doi.org/10.1007/s42243-023-01128-8

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  • DOI: https://doi.org/10.1007/s42243-023-01128-8

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