A hot upset forging operation is performed in an open die. The initial size of the workpart is: Do = 25 mm, and ho = 50 mm. The part is upset to a diameter = 45 mm. The work metal at this elevated temperature yields at 95 MPa (n = 0). Coefficient of friction at the die-work interface(u)=D 0.35. Determine maximum force in the operation. a) 278912 N b) 345876N C) 105649 N d) 212843 N

A hot upset forging operation is performed in an open die. The initial size of the workpart is: Do = 25 mm, and ho = 50 mm. The part is upset to a diameter = 45 mm. The work metal at this elevated temperature yields at 95 MPa (n = 0). Coefficient of friction at the die-work interface(u)=D 0.35. Determine maximum force in the operation. a) 278912 N b) 345876N C) 105649 N d) 212843 N

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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