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针对工字形截面锻件的预成形设计问题，建立了一系列数学模型和锻模ＣＡＤ方法，开发了相应锻模、飞边槽ＣＡＤ软件和数据库，最后举例证实该方法的可靠性。
Aiming at the preform design of I-shaped cross-section forgings, a series of mathematical models and CAD models of forging die were established. The CAD software and database for die forging die and flash slot were developed. Finally, the reliability of the method was verified by an example.