SU1227317A1 - Method of lining the head part of ingot mould - Google Patents

Description

 1227317

The invention relates to metallurgy and can be used in curing solid steel ingots.

The purpose of the invention is to increase the reliability of the cladding.

FIG. 1 to 3 schematically depict successive stages of lining the profitable part of the mold 1 with curvilinear inner walls. The lining consists of curvilinear plates 2, which are affected by the clamping devices 3. There are mounting gaps 4 in the front of the plates.

The method is carried out as follows.

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Thermal insulating curved plates 2 are installed in the profitable part of the mold 1. There are installation gaps 4 between the plates (Fig. 1). Then, using the clamping devices 3, the radius of curvature of the plates 2 is changed until the installation gaps between them disappear. The plates 2 are then in tight contact with each other (Fig. 2). After that, the lining is heated to a plastic state and the action of the clamping devices changes its shape until the outer contours of the lining coincide with the inner contour of the profitable part of the mold. The lining is assembled and the mold can be filled with liquid metal (Fig. 3).

The lining is heated as a result of its contact with a hot rag. If they equip a cold mold, then the lining is heated in the process of filling the mold with liquid metal. For carrying out the process of the present invention, any plates containing fibrous material, refractory filler and organic binder are suitable. Necessary and possible change of the radius of curvature

The plates are determined by simple calculation of the gaps between its individual elements of the plate for bending, depending on the mechanical properties of the plate material, the geometric parameters of the plate and the geometric parameters of the inner plate and the elimination of the need to make a special recess on the inner surface of the mold. molds. JQ tsovki profitable part out of)

As a clamping device, the yield of a suitable metal will be increased and any known clamping devices can be consumed.

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devices such as spring metal brackets.

Example. A seven-toned mold with curved walls in the nail part is equipped with curvilinear heat-insulating plates containing, in wt.%: Quartz sand. 75; pulp and paper industry waste 7; clay refractory hammer 5; sulphite-alcohol bard 13. The temperature of the mold 120. The radius of curvature of the inner walls of the seven-ton mold is equal to 1555 mm. The radius of curvature of the plates - 1580 mm. Plates are installed in the profitable part of the mold with installation gaps between them.

Then, the radius of curvature of the plates is changed with the help of metal spring clips until the installation gaps between the plates disappear. The radius of curvature of the plates with 1560 mm. After 5–10 minutes, as a result of heating the liners with the heat of the hot mold, under the action of metal spacing clamps, the radius of curvature of the plates decreases to 1555 mm and the outer contours of the lining coincide with the inner contours of the profitable part of the mold. The metal can be poured into the mold immediately after the radius of curvature of the plates is changed and the installation gaps between the plates disappear.

The proposed method of lining the profitable part of the mold is simple to implement. The absence of gaps between the cladding elements assembled by the proposed method, the constant effect of the bursting force between them allows the cladding to be exerted by the buoyant force created by filling the profitable part of the mold with liquid metal. Thanks to reliable fastening of the facing on the mold, the absence

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MI and the elimination of the need for a special recess on the inner surface of the mold using the proposed method, the composer N. Romashova

Editor A.Revin Tehred V.Kadar Proofreader 0.Lugov i

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Order 2244/10 Circulation 757Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, Projecto st., 4

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Claims (1)

METHOD FOR FACING THE PROFITABLE PART OF THE TILES, including installation with a gap relative to the walls of the mold of heat-insulating fibrous material with a refractory filler and organic binder and pressing the plates to the indicated walls, characterized in that, in order to increase the reliability of the lining, the pressing is carried out over the entire height of the plates with simultaneous their heating. FIG. 1 (L s Yu N3 M W m