Methods to decrease cut edge sensitivity of high strength steels

Thorsten Gläsner, Christina Sunderkötter, Armin Plath, Martin Bednarz, Wolfram Volk, Hartmut Hoffmann, Roland Golle

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

6 Scopus citations

Abstract

The edge cracking sensitivity of AHSS and UHSS is quite challenging in the cold forming process. Expanding cut holes during flanging operations is rather common in automotive components. During these flanging operations the pierced hole is stretched that its diameter is increased. These flanging operations stretch material that has already been subjected to large amounts of plastic deformation, therefore forming problems may occur. An innovative cutting process decreases micro cracks in the cutting surface and facilitates the subsequent cold forming process. That cutting process consists of two stages, which produces close dimensional tolerance and smooth edges. As a result the hole expanding ratio was increased by nearly 100% when using thick high strength steels for suspension components.

Original languageEnglish
Title of host publicationMaterial Forming ESAFORM 2014
PublisherTrans Tech Publications Ltd
Pages1294-1307
Number of pages14
ISBN (Print)9783038351061
DOIs
StatePublished - 2014
Event17th Conference of the European Scientific Association on Material Forming, ESAFORM 2014 - Espoo, Finland
Duration: 7 May 20149 May 2014

Publication series

NameKey Engineering Materials
Volume611-612
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795

Conference

Conference17th Conference of the European Scientific Association on Material Forming, ESAFORM 2014
Country/TerritoryFinland
CityEspoo
Period7/05/149/05/14

Keywords

  • Cut edge sensitivity
  • Cutting edge quality
  • Formability of cut edges
  • High strength steels
  • Shear cutting

Fingerprint

Dive into the research topics of 'Methods to decrease cut edge sensitivity of high strength steels'. Together they form a unique fingerprint.

Cite this