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玻璃升降器复合拉深模的设计.zip

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玻璃升降器复合拉深模的设计

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JournalofMaterialsProcessingTechnology139(2003)422–binedforward–backwardcoldextrusionofapiston-,,,∗aDepartmentofPrecisionMechanicalEngineering,GraduateSchool,PusanNationalUniversity,Pusan,SouthKoreabDepartmentofMechanicalDesignEngineering,GraduateSchool,PusanNationalUniversity,Pusan,SouthKoreacDepartmentofMechanicalEngineering,ShapeandDieManufacturing,PusanNationalUniversity,,Janjeon-Dong,Kumjeong-Ku,Pusan609-735,SouthKoreaAbstractAﬂowdefectofapiston--pin,alappingdefect,whichisakindofﬂowdefect,-pinhasbadeffectsonthestrengthandthefatiguelifeofthepiston-,.©:Flowdefect;Piston-pin;Materialﬂowcontrol;Forward–backwardextrusion;Deadmetalzone;-Wiﬁetal.[5]studied

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