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Determination of multi-direction loading path based on analytical method in forming of multi-cavity parts by considering folding defect

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Abstract

In the forming of multi-cavity parts by multi-direction loading, the loading path greatly affects the material flow, the cavity filling, and folding defect generation, which is prone to occur and restricts the realization of forming process and guarantee of forming quality. How to determine the reasonable loading path related to part structures is urgent and of challenges. In this paper, the design principle of loading path is proposed, and aiming at the complex structures (different diameters and angles of main and branch pipes, different structures and dimensions) of the formed multi-cavity parts, the initial loading displacement of main punch is quickly determined by a new analytical method and further the overall reasonable loading path, where the volume transfer law and invariance principle are considered. The application in quick determination of loading path in 316LN stainless steel cross valve shows that the analytical method proposed in this paper is reliable and practical. Consequently, the method can provide a scientific basis for the quick determination of the reasonable loading path for diverse and complex multi-cavity parts.

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Funding

The authors would like to gratefully acknowledge the supports of the National Natural Science Foundation of China (51675432) and the Research Fund of the State Key Laboratory of Solidification Processing (NWPU) (156-QP-2016).

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Authors and Affiliations

  1. State Key Lab of Solidification Processing, Department of Materials Science and Engineering, Northwestern Polytechnical University, P. O. Box 542, Xi’an, 710072, Shaanxi, People’s Republic of China

    Zhichao Sun, Jing Cao, Hongwei Qiu, Chenghao Zhang & Han Zhang

Authors
  1. Zhichao Sun
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  2. Jing Cao
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  3. Hongwei Qiu
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  4. Chenghao Zhang
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  5. Han Zhang
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Correspondence to Zhichao Sun.

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Sun, Z., Cao, J., Qiu, H. et al. Determination of multi-direction loading path based on analytical method in forming of multi-cavity parts by considering folding defect. Int J Adv Manuf Technol 100, 475–483 (2019). https://doi.org/10.1007/s00170-018-2751-x

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  • DOI: https://doi.org/10.1007/s00170-018-2751-x

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