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http://dx.doi.org/10.7736/KSPE.2017.34.2.83

Design of a Multi-Step Warm Heading Process for Subminiature Screws  

Jang, Yeon Hui (Department of Automotive Engineering, Seoul National University of Science and Technology)
Jeong, Jin Hwan (Department of Automotive Engineering, Seoul National University of Science and Technology)
Jang, Myung Guen (Department of Automotive Engineering, Seoul National University of Science and Technology)
Hong, Jae-Keun (Special Alloys Research Group, Korea Institute of Machinery and Materials)
Kim, Jong-Bong (Department of Mechanical and Automotive Engineering, Seoul National University of Science and Technology)
Publication Information
Journal of the Korean Society for Precision Engineering / v.34, no.2, 2017 , pp. 83-87 More about this Journal
Abstract
A multi-step warm forging process for subminiature screws is investigated. Due to the low formability of Titanium alloys, bit forming of Titanium screws is difficult by cold forging. In order to overcome this low formability of Titanium alloys, two candidate processes, i.e., multi-step forging and warm forging are introduced. First, a multi-step (two-step) forging process is investigated. The punch shape and stroke of forging during the first step is designed via various analyses. Finally, the bit formability is investigated at different forging temperatures. Analyses are carried out for two-step forging at various temperatures and the formability under these thermal conditions is compared.
Keywords
Subminiature screw; Forging analysis; Finite element analysis; Warm forging;
Citations & Related Records
Times Cited By KSCI : 7  (Citation Analysis)
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