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Abstract：
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The characteristics of the die appearance and metal deformation in the process of step shaping were analyzed in this paper. The cause of producing the spiral step and its region was discovered. The criterion that should be obeyed as designing the die transition of cross wedge rolling was expounded in theory. Contrasting and analyzing many schemes that are satisfied with the transition criterion, the way of cut-off step shaping was pointed out as optimum. Three principles of volume balance and its relevant formula were presented to solve the formula of step shaping curve. In the end, the shaping curve of oblique step was done with the principle of micro volume balance.
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AuthorIntro：
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Reference：
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1胡正寰．斜轧与楔横轧．北京：冶金出版社，1985．2张鹏．二辊楔横轧截止曲线．锻压技术，1981，6（5）．3朱人杰．内直角台肩楔横轧孔形设计．锻压技术，1979，4（1）．4Hidehikotsukamoto．CrossRollMethodfortheProductionofAxi－symmetricalSteppedShaft．Proceedingsof2nd．InternationalConferenceonRotarymetalworkingprocesses，U．Koct．1982．5倪泽明．内斜角台阶轧齐曲线浅析．锻压技术，1990，15（1）．6王宝雨．楔横轧模具设计理论及其孔形CAD研究．北京科技大学博士论文，1991．
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