TY - CHAP

T1 - Increased productivity in hot aluminum extrusion by using extrusion dies with inner cooling channels manufactured by rapid tooling

AU - Hölker, Ramona

AU - Haase, Matthias

AU - Ben Khalifa, Noomane

AU - Tekkaya, A. Erman

N1 - Conference code: 17

PY - 2014

Y1 - 2014

N2 - The influence of local inner die cooling on the heat balance in hot aluminum extrusion was investigated. For the manufacturing of the die with cooling channels close to the forming zone, the layer-laminated manufacturing method was applied. The new tooling technology was applied in order to decrease the profile's exit temperature and to avoid thermally induced surface defects with the aim to raise the productivity in hot aluminum extrusion processes. Numerical and experimental investigations revealed that, while maintaining the exit temperature of the extrudate, a distinct increase of the production speed up to 300 % can be realized, while the extrusion force increases only slightly. An effect on the profiles microstructure was also detected. By applying die cooling, grain coarsening can be significantly limited or even be avoided.

AB - The influence of local inner die cooling on the heat balance in hot aluminum extrusion was investigated. For the manufacturing of the die with cooling channels close to the forming zone, the layer-laminated manufacturing method was applied. The new tooling technology was applied in order to decrease the profile's exit temperature and to avoid thermally induced surface defects with the aim to raise the productivity in hot aluminum extrusion processes. Numerical and experimental investigations revealed that, while maintaining the exit temperature of the extrudate, a distinct increase of the production speed up to 300 % can be realized, while the extrusion force increases only slightly. An effect on the profiles microstructure was also detected. By applying die cooling, grain coarsening can be significantly limited or even be avoided.

KW - Die cooling

KW - Hot aluminum extrusion

KW - Productivity

KW - Rapid tooling

KW - Engineering

UR - http://www.scopus.com/inward/record.url?scp=84902602991&partnerID=8YFLogxK

U2 - 10.4028/www.scientific.net/KEM.611-612.981

DO - 10.4028/www.scientific.net/KEM.611-612.981

M3 - Article in conference proceedings

AN - SCOPUS:84902602991

SN - 9783038351061

VL - 611-612

T3 - Key Engineering Materials

SP - 981

EP - 988

BT - Material Forming ESAFORM 2014

A2 - Larkiola, Jari

PB - Trans Tech Publications

T2 - 17th European Scientific Association on Material Forming - ESAFORM 2014

Y2 - 7 May 2014 through 9 May 2014

ER -