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計要求。對 截 面 B- B 而言,其 最小的厚度是 , 也就是 其減薄率為 %。零件不能不經(jīng)預處理而直接從簡單的管材制造成形。 因為 零件需要很大 的延展比率 ,或是具有 低的成形性的材料 ,如鋁合金 和布滿皺紋的管狀材料 可以用作空心工件 的成形 。 參考文獻 [1] F. Dohmann, Ch. Hartl, Tube hydroforming—research and practical application, J. Mater. Process. Technol. 71 (1997) 174–186. [2] M. Koc, T. Altan, An overall review of the tube hydroforming (THF) technology, J. Mater. Process. Technol. 108 (2020) 384–393. [3] F. Vollertsen, T. Prange, M. Sander, Hydroforming: need, develop ments and perspectives, in: Proceedings of the Sixth International Conference on Technology of Plasticity, Nuremberg, Germany, 1999, pp. 1197–1209. [4] . Yuan, . Wang, Fundamentals and application of tube hydro forming, Chin. J. Mech. Eng. 38 (2020) 12–25 (in Chinese). [5] . Yuan, L. Lang, X. Wang, . Wang, Experimental and numer ical simulation of aluminum tube hydroforming, in: Proceedings of the Second International Conference on Hydroforming, Fellbach, Ger many, November 6–7, 2020, pp. 339–347.