Electric heating – Heating devices – Combined with container – enclosure – or support for material...
Patent
1985-03-25
1986-12-16
Goldberg, E. A.
Electric heating
Heating devices
Combined with container, enclosure, or support for material...
219 1061R, 219 1061A, 219244, 219531, 219470, 165 89, 432 60, H05B 302, B21B 2706
Patent
active
046298673
ABSTRACT:
There is disclosed a heated roll for the thermal treatment of formed products. It includes a driven hollow shaft and a hollow roll body of a circular-ring-shaped cross section and closed on all sides to accommodate a heat transfer medium. Power supply lines for heating elements as well as electric wires of temperature probes are led through the hollow shaft. In order to provide a heated roll to be used without problems both in the low-temperature range and in the high-temperature range up to about 600.degree. C. and to reach a uniform temperature profile over the total operation surface of the roll outer shell and a long service life of the heat transfer medium, without excessive temperature prevailing at the bearings of the driving shaft, and to provide for an easy repair, the hollow shaft is connected with the roll body by a hub. One or several saline compound(s) or (a) low-melting metal(s) or metal alloy(s) are contained in the interior of the hollow roll body. The heating elements are provided in the cylindrical inner part of the roll body. The temperature probes are arranged both in the cylindrical inner part and in the cylindrical outer shell, of the roll body.
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Baumgartinger Josef
Harms Haio
Rauch Ernst
Wimmer Adalbert
Goldberg E. A.
Lenzing Aktiengesellschaft
Preston Gerald E.
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