A study on a hot forging process monitoring for measurement of indirect forging force in flange bolt forming of titanium alloys

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, 15 1 , 2021

J. Korea Society of Die & Mold Engineering, Vol.15 No.1, 2021 ISSN 2092-9692

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A study on a hot forging process monitoring for measurement of indirect

forging force in flange bolt forming of titanium alloys

Seok-Jae Ha

1

_{Doo-Sun Choi}

2

_{Dong-Won Lee}

2,3

_{Ki-Hyeok Song}

R&D Center, HARANGAMI INC.1 _{Department of Mechanical Engineering Inha University}2_, Shape Manufacturing R&D Department, Korea Institute of Industrial Technology3_,

Department of Die & Mold Design, Korea Polytechnics, Incheon

(Received January 19, 2021 / Revised March 29, 2021 / Accepted March 31, 2021)

Abstract: The objective of this study is to introduce the new possibility of sensing technology based on inductive displacement sensors to monitor the status of wheel position in the hot forging process. In order to validate effectiveness of proposed sensing technology, the indirect forging force measurement with displacement sensor was applied into a typical closed hot forging die-set used for the manufacturing of flange bolts. The locations to implement the displacement sensor were selected carefully by simulating forming process and static structural. From the measurement results of the forging force change during one hot forging cycle, it was found that the proposed monitoring system can provide useful information to understand the detailed behaviors of die-set in the closed hot forging process.

Key Words: Displacement sensor, Hot forging process, Indirect forging force measurement, Process monitoring, Flange bolt, Titanium alloys

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