Abstract
The large deformations in backward can extrusion result in a rise
of temperature of more than 200 oC. In the experiments, cans in
low carbon steel are formed with a lubrication layer of phosphate
soap. The temperature is measured by thermocouples in the die
insert and the punch. The die insert is divided into two halves
where the thermocouples are welded to the end of milled grooves in
the lower part. The temperature of the workpiece is measured by
welding a thermocouple directly onto the free surface. The punch
is equipped with three thermocouples mounted at a distance of 0.2
mm from the surface. The thermocouples are welded to the end of
grooves milled in a small plug, which is pressed into a hold in
the punch nose. All the temperature measurements in the tool and
the workpiece are compared with a number of finite element (FE)
simulations computed with different heat transfer coefficients.
The current heat transfer coefficient (HTC) is then determined by
the least square method
Original language | English |
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Title of host publication | Modelling of structure and Mechanics of Materials from Microscale to Product |
Publisher | Risø National Laboratory |
Publication date | 1998 |
Pages | 279-284 |
Publication status | Published - 1998 |
Event | 19th Risø International Symposium on Materials Science - Risø, Roskilde, Denmark Duration: 7 Sep 1998 → 11 Sep 1998 |
Conference
Conference | 19th Risø International Symposium on Materials Science |
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Location | Risø |
Country | Denmark |
City | Roskilde |
Period | 07/09/1998 → 11/09/1998 |