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Abstract：
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On the base of foundational experiment, theorical analysis and application research, this paper emphatically carried out deeply analyzing that effect of the stress state on relieving casting structure during the process of cast blank die forging, and also it proposed the foundation and the principle, which was how to select reasonably the forging ratio (or deformating degree) in the stress state of cast blank die forging. The researched results gave that the mechanical characteristic of cast blank in die forging was useful to improve the mechanical properties and the forging qualities.
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AuthorIntro：
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Reference：
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1汪大年等编．金属塑性成形原理．北京：机械工业出版社，1982．2胡赓祥等编．金属学．上海：上海科学技术出版社，1980．3GE迪特尔著，李铁生等译．力学冶金学．北京：机械工业出版社，1986．4罗守靖等著．钢质液态模锻．哈尔滨：哈尔滨工业大学出版社，1990．5姚洛均主编．金属机械性能试验常用手册，北京：机械工业出版社，1985．6MB斯德洛日夫，EA波波夫等著．金属压力加工原理．北京：机械工业出版社，1983．7汪家才著．金属压力加工现代力学原理．冶金工业出版社，1991．
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