Metal founding – Including vibrator means – In continuous casting mold
Patent
1995-04-10
1996-08-20
Batten, Jr., J. Reed
Metal founding
Including vibrator means
In continuous casting mold
164429, 164442, 164443, 164444, B22D 1106
Patent
active
055470130
ABSTRACT:
A casting wheel carries a rotating inner-radius mold wall along its rim and features a non-rotating mold segment incorporating the outer-radius mold wall, circumferentially oscillated about an external stationary support. The casting wheel includes circumferential guide tracks around the wheel periphery, along which cam guide rollers carrying the non-rotating segment act to maintain a closely controlled interface clearance between the inner and outer-radius mold wall edges throughout the rotation. The non-rotating mold segment may be constructed as a single box or multiple box segments hinged together for oscillation by a single oscillator, each segment incorporating its own guide roller system. Each box inside wall doubles as the mold envelope outside wall, against which water sprays may be directed from nozzles within the box enclosure, which is drained by gravity from an outlet proximate the lower end. Because of the rigid construction of both wheel and closure, wide slab sections for flat-rolled products can be cast by simply increasing the width of the wheel in relation to the depth of the mold envelope. Adjustable-width side dams can be used for adjusting cast slab width, extra clearance for entry of submerged shrouds for casting of this slab sections, and is adaptable for a variety of near net shape products including structural sections. Box enclosures carrying a series of idler rollers can be used in place of the outer-radius mold wall, following the formation of a cohesive solid skin on the section being cast. This eliminates significant closure friction and assures non-sliding contact at controlled pressure between stock and wheel, thereby propelling the stock by static friction along the arc of contact with the wheel, rather than by pulling with withdrawal rollers following discharge, or with driven rollers along the containment section. A mechanical-hydraulic oscillator transmission can be employed to accomplish the rapid oscillation characteristic of high speeds of continuous casting.
REFERENCES:
patent: 441643 (1890-12-01), Close
patent: 3659643 (1972-05-01), Pavels
patent: 4589470 (1986-05-01), Bedell et al.
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