[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.5228/KSPP.2003.12.4.370

Determination and Analysis of Interface Heat Transfer Coefficients in Hot Forming of Ti-6Al-4V

염종택 (한국기계연구원 공정연구부)
임정숙 (한국기계연구원 공정연구부)
박노광 (한국기계연구원 공정연구부)
신태진 (포항공과대학교 기계공학과)
황상무 (포항공과대학교 기계공학과)
홍성석 (국방과학연구소 기술연구본부)

Publication Information

Transactions of Materials Processing / v.12, no.4, 2003 , pp. 370-375 More about this Journal

Abstract

Determination of the interface heat transfer coefficient was investigated in non-isothermal bulk forming of glass-coated Ti-6Al-4V. FE analysis and experiments were conducted. Equipment consisting of AISI Hl3 die was instrumented with thermocouples located at sub-surface of the bottom die. Die temperature changes were investigated in related to the process variables such as reduction, lubricant and initial die temperature. The calibration approach based on heat conduction and FE analysis using an inverse algorithm were used to evaluate the interface heat transfer between graphite-lubricated die and glass-coated workpiece. The coefficients determined were affected mainly by the contact pressure. The validation of the coefficients was made by the comparison between experimental data and FE analysis results.

Keywords

Interface Heat Transfer Coefficient; Ti-6Al-4V; Inverse Algorithm; FE analysis; Contact Pressure;

Citations & Related Records

Reference

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1	Investigation of Forming Stabilities Criteria in Hot Backward Extrusion of Ti-6Al-4V / [Yeom Jong-Taek;Park Nho-Kwang;Lee You-Hwan;Shin Tae-Jin;Hwang Sang-Mu;Hong Sung-Suk;Shim In-Ok;Lee Chong-Soo;] / Journal of the Korea Institute of Military Science and Technology
2	A Study of Interface Heat Transfer Coefficient Between Die and Workpiece for Hot Forging / [Kwon J. W.;Lee J. H.;Lee Y. S.;Kwon Y. N.;Bae W. B.;] / Transactions of Materials Processing
3	Process Design of Isothermal Forging for Three-Dimensional Ti-6Al-4V Wing-Shape / [Yeom J. T.;Park N. K.;Lee Y. H.;Shin T. J.;Hong S. S.;Shim I. O.;Hwang S. M.;Lee C. S.;] / Transactions of Materials Processing
4	Development of Hot die Forging Process for Large-size Titanium Alloy Container / [Kwon, I.K.;Kim, D.S.;Park, T.D.;Park, H.S.;Hong, S.S.;Shim, I.O.;] / Transactions of Materials Processing

KSCI

Determination and Analysis of Interface Heat Transfer Coefficients in Hot Forming of Ti-6Al-4V Ti-6Al-4V 합금의 열간성형에 대한 계면열전달계수의 결정 및 분석

Determination and Analysis of Interface Heat Transfer Coefficients in Hot Forming of Ti-6Al-4V