Dispensing – Molten metal dispensing – Flow controllers or assists
Patent
1995-01-18
1997-12-09
Kastler, Scott
Dispensing
Molten metal dispensing
Flow controllers or assists
222597, B22D 4122
Patent
active
056956746
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a device for controlling a pour rate, the device comprising a rectangular metal chassis arranged so as to be able to pivot with respect to a bottom wall of the pouring ladle and a push-cover containing a stationary upper plate and a carriage carrying a movable plate which is compressed between the stationary upper plate and a flange of a pouring tube.
2. Description of the Prior Art
Document EP-A-0,202,213 discloses a metal chassis for a sliding closure device of a metallurgical container for continuous casting mainly including a base plate integral with the metal container and a pivoting swing door hinged onto the base plate.
In this document, the renewal of wear elements is greatly facilitated by the use of sliding closures fitted with one or more hinged doors.
The removable rotation hinges and the removable device for locking the door on the base plate allow easy access to the wear components, at the very point at which the steel is poured. A pressure-taking device is provided so as to apply the movable plate against the stationary plate whilst the pouring tube is held movably against the movable plate.
One drawback of this known device lies in the fact that the movable plate is held tightly between two stationary elements. Such a movable plate consequently has two gliding surfaces, the first face sliding with respect to the upper plate of the pouring tube.
SUMMARY OF THE INVENTION
The present invention aims to reduce the number of wear elements in gliding contact during control of the rate and also aims to improve the bringing and the exchange of a pouring tube under a pouring ladle or under a pour dispatcher without having to considerably modify the speed of extraction of the slab, bloom or billet.
To this end, the present invention proposes a hinged chassis for a device for controlling a pour rate making it possible to bring and to exchange a pouring tube such as described in the first paragraph of the descriptive text.
The present invention resides in a device for controlling a pour rate, including a rectangular metal chassis arranged so as to be able to pivot with respect to a bottom wall of a pouring ladle and a push-cover containing a stationary upper plate and a carriage carrying a movable plate which is compressed between the stationary upper plate and a flange of a pouring tube. The movable plate being capable of being moved from a position for blocking the tap hole to a position for opening it and vice versa. The carriage includes means for guiding the pouring tube in a horizontal plane and in a vertical position from a loading position to a standby position beneath the pouring office of the movable plate and from the standby position to a position for unloading the pouring tube and means for pushing upwards which fixedly apply the pouring tube against the pouring orifice of the movable plate in the position for blocking the tap hole and a device for pressing the upper plate against the movable plate.
The hinged chassis is essentially characterised in that the carriage includes means for guiding the pouring tube in a horizontal plane and in a vertical position from a loading position to a standby position beneath the pouring orifice of the movable plate, means for pushing the pouring tube upwards under the pouring orifice of the movable plate in the position for blocking the cap hole and a device for pressing the upper plate against the movable plate.
According to one feature of the invention, the push-cover is hinged onto the metal chassis around second pivots.
In one specific embodiment, the device for pressing the stationary upper plate against the movable plate consists of two series of spring cartridges arranged on either side of the tap hole along opposite sides of the stationary upper plate.
So as to prevent them from falling when the swing door opens, the spring cartridges are kept in place by a compression plate fixed removably to the push-cover with the aid of studs.
The original nature of the
REFERENCES:
patent: 3760993 (1973-09-01), Meier
patent: 4063668 (1977-12-01), Shapland et al.
patent: 4687186 (1987-08-01), Francois-Noel
patent: 4848604 (1989-07-01), Fricker
patent: 4921148 (1990-05-01), Muller
patent: 5141139 (1992-08-01), Kleeblatt
patent: 5400930 (1995-03-01), Richard
International Industrial Engineering S.A.
Kastler Scott
LandOfFree
Casting flow control device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Casting flow control device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Casting flow control device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1604896