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A Study on Weldability Criteria of Mash Seam Tailored Blank Welds in the Ultra-low Carbon Steel Applied on Automotive Body  

한창우 (한양대학교 신소재공학부)
이창희 (한양대학교 신소재공학부)
이명호 (자동차부품연구원)
Publication Information
Journal of Welding and Joining / v.20, no.4, 2002 , pp. 538-543 More about this Journal
Abstract
M/S TB(Mash Seam Tailored Blank) is a production method for blanks by welding together blanks of different material, thickness and coating, and is an attractive method for manufacturing car body because it makes parts lighter and can save the cost and time to manufacture. However, there have not been quantified criteria to evaluate the quality of TB weld. This study introduced FHR (failure height ratio) in order to assess formability or/and weldability of the M/S welds and the applicability of FHR was confirmed by actual auto body forming and FLD tests. Furthermore, a new parameter, HN(heat number) based on the heat input of "$Q=I^2Rt$" was proposed and assessed. It was found that the concept of HN could be utilized to evaluate the soundness of M/S welds without any destructive tests.ive tests.
Keywords
Tailored blank (TB); Erichsen test; Actual test; Failure height ratio(FHR); Mash Seam welding (M/S); Heat number (HN);
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  • Reference
1 /
[ B.G. Chung;C.H. Lee ] / Mater. Sci. & Eng.   DOI   ScienceOn
2 /
[ R.L. O'Brien ] / Welding Handbook(8th edition)
3 /
[ W. Prange ] / 1989 SAE International Congress & Exposition
4 /
[ B.G. Chung;G.M. Ko;K.H. Chung;C.H. Lee ] / J. Kor. Soc. Laser Processing
5 /
[ E.J. Funk;M.L. Begeman ] / Welding J.
6 /
[ M.F. Shi;K.M. Pickett ] / 1993 SAE International Congress & Exposition
7 /
[ A.P. Lee;E. Feltham;J.V. Deventer ] / 1996 SAE International Congress & Exposition
8 /
[ R.W. Messler, Jr. ] / Principles of Welding-Processes, Physics, Chemistry and Metallurgy