Dimensionally stabilized roller body
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United States of America Patent
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Jun 21, 2005
Grant Date -
Aug 14, 2003
app pub date -
Dec 30, 2002
filing date -
Dec 28, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
A roller body for a roller, for pressure-treating or temperature-treating or combined pressure- and temperature-treating a web-shaped medium, for example paper, includes a casting body made of an iron-based alloy comprising graphite lamellae. Particular regions of the roller body are placed under tensile stresses during or after production. The stresses being applied are larger than those which occur in these regions during operation of a roller. The additionally applied tensile stresses trigger local plastic deformations in peripheral regions of the graphite lamellae, such that once the tensile stresses are no longer applied, the roller body behaves elastically and no longer permanently deforms up to the stress level achieved.
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