Friction and bending forces evaluation of AISI 304 DDQ steel sheet forming by bending tests under deep-drawing multiaxial stresses

Authors

  • J. Coello Instituto de Desarrollo Regional; Universidad de Castilla-La Mancha - Escuela de Ingenieros Industriales Albacete; Universidad de Castilla-La Mancha
  • V. Miguel Instituto de Desarrollo Regional; Universidad de Castilla-La Mancha - Escuela de Ingenieros Industriales Albacete; Universidad de Castilla-La Mancha
  • C. Ferrer Departamento de Ingeniería Mecánica y de Materiales; Universidad Politécnica de Valencia
  • A. Calatayud Instituto de Desarrollo Regional; Universidad de Castilla-La Mancha - Escuela de Ingenieros Industriales Albacete; Universidad de Castilla-La Mancha
  • A. Martínez Instituto de Desarrollo Regional; Universidad de Castilla-La Mancha

DOI:

https://doi.org/10.3989/revmetalm.1202

Keywords:

AISI 304 Stainless steel, Bending under tension, Friction, Deep-drawing

Abstract


Die radius is a critical area from the viewpoint of friction in forming processes. Moreover the sheet, that has been previously deformed in flange area, suffers bending and unbending stresses. Then, die-sheet contact in die radius must be especially considered in order to guarantee the suitable lubrication conditions. In the present work, a test method is carried out for evaluating an AISI 304 DDQ steel under similar conditions to those existing in the die radius area and that, usually, are not really reproduced in traditional bending under tensions tests. Deformation under pure shear condition, the bending and the radius angle have been established as variables of the tests. Results allow to obtain the apparent pressure sheet-bending tool, that increases with bending angle and decreases with tool radius. This last variable is the most significant while the bending angle has lesser influence. Although experimental results present some concordances with values obtained by analytical methods, some corrections must be considered in them in order to improve the theoretical values.

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References

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Published

2012-08-30

How to Cite

Coello, J., Miguel, V., Ferrer, C., Calatayud, A., & Martínez, A. (2012). Friction and bending forces evaluation of AISI 304 DDQ steel sheet forming by bending tests under deep-drawing multiaxial stresses. Revista De Metalurgia, 48(4), 264–276. https://doi.org/10.3989/revmetalm.1202

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