Development of satellite mill and trial rolling of profiled metal strip |
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Authors: | Y Saito T Watanabe H Utsunomiya |
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Affiliation: | (1) Department of Materials Science and Engineering, Osaka University, Japan;(2) Dowa Metal Industry Inc. and he is currently with the Nippon Yakin Industry, Japan;(3) Graduate Student of Osaka University, Japan |
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Abstract: | A new type of compact continuous mill called the “Satellite mill” has been developed to produce profiled metal strip from
flat strip. This mill consists of one large-diameter driven roll (central roll) and five smaller rolls (satellite rolls) arranged
along the periphery of the central roll. A strip is continuously rolled at five gaps between the central roll and the satellite
rolls. All rolls are driven at an equal roll peripheral speed to promote transverse metal flow or lateral spread. Guide shoes
are provided between the adjacent satellite rolls and are supported with two adjacent satellite rolls. They prevent a strip
from bulging or buckling. A test mill was constructed, and rolling experiments have been performed on the production of T-shaped
or U-shaped profiled aluminum strip. The deformation- load characteristics were investigated and compared with those of conventional
rolling. As a result, in the satellite mill rolling operation, elongation was suppressed. Lateral spread was enhanced, and
the profile of the product cross section was significantly improved. Consequently, the new rolling process was found to be
forming of profiled metal strip. |
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