Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1983-05-02
1985-12-10
Rosenbaum, Mark
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
29129, B21B 2900
Patent
active
045570280
ABSTRACT:
An inflatable crown roll for a rolling mill is made entirely from castings and has a cavity of very small radial dimension. In one embodiment the arbor is cast in the usual way. Its surface bounding the cavity is coated with a refractory composition that will disintegrate after being heated to casting temperature. A sand mold for the sleeve is then formed around a pattern, the pattern is removed, the cast arbor is positioned vertically in the sleeve mold and the sleeve is cast around the arbor. The sleeve metal temperature is regulated so that the sleeve fuses to the arbor at its necks. The disintegrated coating is flushed out through drill holes in the sleeve by fluid, leaving a cavity between arbor and sleeve. A sleeve with a composition of metal on its working face different from that of its neck portion may be cast by positioning gates with shut-off valves and risers at appropriate positions in the sleeve mold. Another embodiment of the sleeve is cast in a vertical mold provided with a sand core on a vertical support, the core having an external surface which bounds the cavity. After the casting solidifies the core and support are disintegrated and removed. The cast sleeve is then turned end-for-end and its interior is filled with molten metal of a composition which will shrink but will not fuse with the sleeve material. The shrinkage provides the cavity between sleeve and core.
REFERENCES:
patent: 3604086 (1971-09-01), Bretschneider
patent: 4242781 (1981-01-01), Takagawa et al.
Blenko, Jr. Walter J.
Eley Timothy V.
Rosenbaum Mark
Silverman Arnold B.
White Consolidated Industries, Inc.
LandOfFree
Composite inflatable crown roll does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Composite inflatable crown roll, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Composite inflatable crown roll will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-51385