 Resistance Heating
| 127 - Resistance Heating Analysis |
Module:HT,TR |
2011-01-17 |
| The characteristics of metal that are fabricated, such as shafts, worsen
as deformation occurs. Therefore, the fabricated deformation that occurs
during thermal processing is difficult to repair, but needs to be removed
so that a standard composition is achieved. The entire metal body needs
to be heated uniformly by the thermal processing to improve the characteristics.
It is advantageous to measure the temperature distribution when heating
the metal. A thermal analysis can be performed by using the Joule losses
that are obtained with a magnetic field analysis as the heat source in
JMAG. This example presents the use of a thermal and magnetic field analysis
to obtain the temperature distribution, heat generation density distribution,
and current density distribution of metal object heated by resistance heating. |
| 44 - Resistance Heating Analysis of a Steel Sheet |
Module:HT,TR |
2011-02-28 |
| Resistance heating is one method of heating used to fabricate steel sheets.
Resistance heating uses the heat produced by the Joule losses that occur
from the electric resistance when a current flows through a heated body.
This type of heating is used in hot formed pressing because an object can
be uniformly heated. Generally, more than 600 degrees Celsius is required
for hot formed pressing. The loss distribution obtained with a magnetic
field analysis can be used as the heat source for a thermal analysis in
JMAG-Designer. This example presents the use of a coupled thermal and magnetic
field analysis to obtain the temperature distribution of a resistance heated
steel sheet and the difference in the rising temperatures versus the making
current. |
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