TY - GEN
T1 - Methods to decrease cut edge sensitivity of high strength steels
AU - Gläsner, Thorsten
AU - Sunderkötter, Christina
AU - Plath, Armin
AU - Bednarz, Martin
AU - Volk, Wolfram
AU - Hoffmann, Hartmut
AU - Golle, Roland
PY - 2014
Y1 - 2014
N2 - 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.
AB - 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.
KW - Cut edge sensitivity
KW - Cutting edge quality
KW - Formability of cut edges
KW - High strength steels
KW - Shear cutting
UR - https://www.scopus.com/pages/publications/84902596904
U2 - 10.4028/www.scientific.net/KEM.611-612.1294
DO - 10.4028/www.scientific.net/KEM.611-612.1294
M3 - Conference contribution
AN - SCOPUS:84902596904
SN - 9783038351061
T3 - Key Engineering Materials
SP - 1294
EP - 1307
BT - Material Forming ESAFORM 2014
PB - Trans Tech Publications Ltd
T2 - 17th Conference of the European Scientific Association on Material Forming, ESAFORM 2014
Y2 - 7 May 2014 through 9 May 2014
ER -