Forging of Parts Having Strength Distribution Using Tailor Friction-Welded Billets Composed of Steel Bars Having Different Quenchabilities

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Parts having a strength distribution were produced from tailor friction-welded billets consisting of steel bars having different quenchabilities. Chrome steel SCr420 and mild steel S25C bars having high and low quenchabilities, respectively, were joined by friction welding. The tailor friction-welded billets were forged, and then quenched so as to have a strength distribution. The cold formability of the tailored billet was first examined from simple compression in the normal and tangential directions to the joint. No cracks appeared even for an 80% reduction in height in the compression. In a tensile test of the 80% reduced billet, the softer S25C side was fractured and the interface was not fractured. The tailor billets have enough cold formability. The thermal influence around the joint of the tailor friction-welded billets was eliminated by annealing, and thus inhomogeneous deformation around the joint in forging was prevented. A shaft having a high strength flange and a connecting rod having high strength and machinability were produced by forging and quenching of the tailored billet.

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Periodical:

Key Engineering Materials (Volumes 622-623)

Main Theme:

Edited by:

Fabrizio Micari and Livan Fratini

Pages:

186-193

Citation:

T. Maeno et al., "Forging of Parts Having Strength Distribution Using Tailor Friction-Welded Billets Composed of Steel Bars Having Different Quenchabilities", Key Engineering Materials, Vols. 622-623, pp. 186-193, 2014

Online since:

September 2014

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$38.00

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[1] E. Kubel, Manufacturers want more tailored blanks, Manufacturing Engineering, 119–5 (1997) 38–45.

[2] B. Irving, Welding tailored blanks is hot issue for automakers, Welding Journal, 74–8 (1995) 49–52.

[3] H. Kusuda, T. Takasago, F. Natsumi, Formability of tailored blanks, Journal of Material Processing Technology, 71(1997) 134–140.

DOI: https://doi.org/10.1016/s0924-0136(97)00159-3

[4] M. Merklein, M. Johannes, M. Lechner, A. Kuppert, A review on tailored blanks – Production, applications and evaluation, Journal of Material Processing Technology, 214–2(2014) 151–164.

DOI: https://doi.org/10.1016/j.jmatprotec.2013.08.015

[5] M. Urban, M. Krahn, G. Hirt, R. Kopp, Numerical research and optimisation of high pressure sheet metal forming of tailor rolled blanks, Journal of Materials Processing Technology 177–1–3(2006) 360–363.

DOI: https://doi.org/10.1016/j.jmatprotec.2006.03.195

[6] A. Meyer, B. Wietbrock, G. Hirt, Increasing of the drawing depth using tailor rolled blanks — numerical and experimental analysis. International Journal of Machine Tools and Manufacture 48-55(2008) 522–531.

DOI: https://doi.org/10.1016/j.ijmachtools.2007.08.003

[7] C.J. Tan, K. Mori, Y. Abe, Forming of tailor blanks having local thickening for control of wall thickness of stamped products, Journal of Materials Processing Technology 202–1–3(2008) 443–449.

DOI: https://doi.org/10.1016/j.jmatprotec.2007.10.014

[8] C.J. Tan, Y. Abe,K. Mori, M. Suzuki, Forming of tailor blanks for increase in wall thickness at corner of stamped high strength steel products. Steel Research International 81–9 (2010) 833–836, Supplement Metal Forming (2010).

[9] K. Mori, Y. Abe, K. Osakada, S. Hiramatsu, Plate forging of tailored blanks having local thickening for deep drawing of square cups, Journal of Materials Processing Technology 211–10 (2011) 1569–1574.

DOI: https://doi.org/10.1016/j.jmatprotec.2011.04.010

[10] J. Domblesky, F. Kraft, B. Druecke, B. Sims, Welded preforms for forging, Journal of Materials Processing Technology 171–1(2006) 141–149.

DOI: https://doi.org/10.1016/j.jmatprotec.2005.06.066

[11] J. Domblesky, F.F. Kraft, Metallographic evaluation of welded forging preforms, Journal of Materials Processing Technology 191–1–3(2007) 82–86.

DOI: https://doi.org/10.1016/j.jmatprotec.2007.03.077