DE1758269A1 - Heat hood and method of making the same - Google Patents

Description

DR. EULE DR. BERG DIPL.-ING. STAPF

PATENT LAWYERS
8 MUNICH 2. HILBLESTRA8SE 2O 1 7 R β? RQ

Dr. Owl dr Berg Dipl.-Ing. Stapf, 8 Munich 2, HilblastraSe 20 Your sign Unjer sign date

Vl / My 17 263 May 3, 1968

Attorney file 17 263

OGLEBAY NORTON COMPANY

l4oo Hanna Building
Cleveland, Ohio (USA)

Warming hood and method of making the same

The invention relates to a heating mantle and a method for manufacturing the same. In particular, it concerns one refractory panel lining with a plurality of interconnected panel fields which are relatively movable, to form a tubular container at the top of a mold so that liquid metal becomes solidified in the mold Metal can be replenished to compensate for the shrinkage of the metal during its solidification.

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According to the invention is a solid, easily transportable, storable and manageable panel lining from a relative cheap, refractory material provided, which has such a high insulation efficiency that a relatively thin lining made of this material, approximately 20 to 30 mm thick. the insulation of expensive insulating stone linings of the same density as the lining panels, however of twice the thickness, about 40 to 65 mm, is equivalent and can therefore be used as a replacement for such thick, expensive insulating stone linings, especially in warming hoods

and the use of such flattened linings in heated hood jackets without stone lining is permitted.

Since the plate lining in comparison to a double thick lining of insulating bricks is cheap, it can be replaced with a new one after a single use, while a lining of insulating bricks of double thickness laid in the warming hood jacket, used repeatedly and protected after each use in order to be economically justified

The above-mentioned panel lining thus simplifies the warming hood casting by using the reusable stone lining and eliminates the work associated with laying and maintaining the same. The sympathy of the resulting Operation of the warming hoods is also affected by a curative

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preparation time as well as increased turnover and increased readiness for action of the warming hoods, so that more ingots with a smaller number of warming hood jackets in a smaller 'preparation area can be generated.

The invention provides an improved, insulating, refractory Panel liner for warming hoods of light but strong construction, so that they are with minimal occurrence of Breakage can be easily handled, shipped and stored. Despite the structural strength of the panel lining, the Plates thereof are easily moved relatively to form the hollow, tubular container for use. Furthermore the panel lining is designed so that the adjacent dtoßflächen the panels without grinding or a other additional processing of the same can be made. The entire lining is manufactured using a process that only requires a single vacuum forming process without f Treatment of the individual panels includes "

The highly insulating, refractory lining is particularly for use in a warming hood jacket without one at the top Ceramic lining attached to a mold or for use without a heating hood jacket directly in the mold suitable. The highly insulating refractory lining according to the invention is also suitable for use in heating hood jackets suitable if they are made of hard, dense, fireproof

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Bricks or an equivalent “stamped lining” backed up is·

Also in accordance with the invention is a new and improved, highly insulating one Panel lining provided in which the adjacent panels by integrally formed, breakable Connecting parts are connected that can be easily broken to allow relative movement of the plates to form the to allow tubular container, with the adjacent Moving abutment surfaces of the plates in surface contact with one another will.

The invention also provides a new and improved, highly insulating Panel lining, as explained in the previous paragraph, in which the refractory panels and the frangible connecting parts are made of the same refractory material and in which there is a flexible one The replacement hinge extends between adjacent panels and the panels after breaking the frangible connecting parts connects with each other.

The invention further provides a new and improved, highly insulating Plate lining, in which the hinge device is a wire mesh, which at least partially in which the refractory material forming the plates and the connecting parts is embedded.

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The invention also provides a new and improved, lightweight insulating lining for protecting the inner surface of a metallic heating hood jacket, which is formed from a granular, refractory material, a preferably inorganic fiber material and a binder, the entire lining being made of one and the same material and is in two parts, the one part forms a shroud to protect the ύ bottom of the shell and the other part an arrangement for protecting the substantially axially extending inner walls of the shell.

The invention also provides a new and improved bezel with high heat insulating properties, but the has a low weight and is easy to handle and carries the "ärmeschutzauskienung" in the warming hood.

The invention further provides a new and improved method for producing a highly insulating panel cladding,

as described in the preceding paragraphs / which characterized by a molding process in which the flexible hinge means are substantially within the refractory Material is embedded and the panels and the frangible panel connectors are formed.

The invention also provides a new and improved paneled garment which, when spread flat, trans-

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ported and then folded to fit into the hollow heating hood construction fits, the liner having corner panel parts which connect to panel parts which are arranged substantially transversely to one another in use, the corner panels being made up of a plurality of relatively movable ones Plate members are assembled so that the corner plate portion conforms to a rounded edge of the ring construction.

The invention further provides a new and improved method to produce a highly insulating panel lining of the type described in the preceding paragraphs according to this method, the flexible hinge reinforcement, preferably a wire mesh or wire screen, is placed on the filter screen a vacuum box) a profile forming frame designed for forming the refractory panels and the panel connection parts is placed over the flexible wire mesh and onto the Filter sieve in place} a refractory pulp is poured into the profile frame and partially drained by vacuum, see above that a fire-resistant, moist mat is formed or shaped} the profile molding frame is then made of the fire-resistant mat panels picked up; Finally, by heating in the oven or on another way of removing the moisture and curing the mat to preserve the high-insulating panel liner.

The invention also provides a new and improved method for the production of a panel lining, as it is in the

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standing paragraph is described, wherein the grooves which delimit the abutting surfaces of the plates are formed by inserting rods in the mold frame at a distance from the vacuum filter screen. The molding process is carried out so that a vacuum is created under the filter screen to remove most of the liquid from the slurry after the slurry has been poured into the mold and flowed under the M bars and around the wire mesh to form the frangible parts integrally connecting the adjacent panels.

The invention also relates to various new constructions and arrangements of parts. Further advantages of the invention will be Those skilled in the art will appreciate and will refer to the following detailed description of an embodiment of the drawings which form a part of this specification and in which like reference numerals are used for designation used by corresponding parts in the multiple views.

Fig. 1 shows a partially sectioned partial view of a heating hood according to the approximately along the line 1-1 in Fig. 2 Invention inserted into the open top of a mold;

Fig. 2 is a fragmentary sectional view taken approximately along line 2-2 in Fig. 1;

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3 is a view of a panel liner according to FIG Invention that includes the liner in its molded and thermoset state, ready for packaging and packaging • Shipping, shows;

4 are partial sectional views of the panel cladding according to FIG and 4a "

3 on an enlarged scale;

fc Fig. 5 is a partial vertical section through a liner

according to the invention, which is installed in the open upper end of a mold;

Figure 6 is a partial top plan view of the bezel used with the liner;

Fig. 7 is a somewhat schematic partial plan view of a

Apparatus for producing the panel lining according to FIG. 3;

Fig. 8 is a partial longitudinal section through the device of Fig. 7 on an enlarged scale;

Fig. 9 is a view of a modified warming hood jacket and a modified liner inserted therein;

Figure 10 is a partial front view of the liner of Figure 9t and

FIG. 11 is a section taken along line 11-11 in FIG. 10.

The invention provides a novel panel liner and a method of making the same. In particular, it creates a novel preformed panel liner with a Plurality of feat-related plates or plate parts 10a, 10b,

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which are relatively movable and form a tubular container with a plurality of side surfaces at the upper end of a mold which receives a quantity of metal in the liquid state above the mold to compensate for the shrinkage of the metal in the mold during the solidification of the same. Can be Although the preformed plate lining installed or 10 in various types of Wärmhaubenkonstruktionen used m, so it is particularly useful when it is folded and inserted into a Wärmhaubenmantel, to form a highly insulating Wärmhaube A.

The heating hood A can be attached in the open upper end of a mold 12. The metal shell 11 and its use are of a natural nature. As best shown in Fig.1 As can be seen, the metal jacket 11 is formed in one piece with a central opening 13, although the jacket is also made of two pieces can be made and screwed together. The opening or the interior space 13 tapers from below above. The opening 13 can of course also be designed without a taper and have any suitable shape, such as circular or oval if so desired.

The panel liner 10 can be folded into a tubular shape To form containers with several side surfaces or a heating hood lining, whose sides in their shape and Number correspond to the sides that the opening 13 in the meter

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- ίο -

Limit jacket 11. In the embodiment shown, the opening 13 in the metal jacket 11 has eight sides and the panel liner 10 also has alternating side and corner plates 10a and 10b which form an eight-sided, hollow body which is complementary to the eight-sided opening 13. When the disk liner 10 is ψ gefal- tet, to form the Wärmhaubenauskleidung, it may be pushed into the opening 13 of the metal jacket 11. the Panel lining is on the inside of the shell 11 by its taper, which rests on the taper of the shell, held and carried by the bezel.

After inserting the panel liner 10 into the metal jacket 11, a refractory cover ring 16 is placed on the lower end placed on the warming hood. The type of touchdown and the green These are well known to those skilled in the art. The refractory shroud 16 has an upper surface which abuts the lower edge of the panel liner 10 around the latter to keep within the metal shell 11 and the penetration of the to prevent liquid steel behind the lining. On the Deokring 16 has an abutment ring 18 arranged which, for reasons well known to those skilled in the art, bears against the sides delimiting the opening at the upper end of the mold 12. The fireproof Deokring 16 and the WuIatatreifen 18 can any suitable or conventional manner, such as by parentheses

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the jacket 11 fastened by notches 17 in the inner surface of the ring.

When the thus equipped heating hood A is used for a casting process, it is placed at a predetermined distance in the upper open end of a mold 12 and initially held in this position by suitable blocks (not shown). % After having poured the liquid metal in the mold 12 and the Wärmhaube A, the blocks are knocked out or destroyed, resting whereupon the Wärmhaube on the solidifying ingot or "floats", the Wärmhaube contains a quantity of molten metal ", one part of the Ingot is fed into the mold in order to compensate for the shrinkage of the metal during solidification.

The insulating shroud further protects the lower end of the, sheath and, most importantly, provides a highly insulating heat barrier between the molten steel and the 'Wärmhaubenmantel at the critical lower widened orifice or connecting point of the Wärmhaube, making it critical that quenching of the Wärmhaubenmantels at this Reduces point to a minimum and prevents the formation of a steel bridge on this lunkt before the metal in the heating hood has completely filled the void in the raw block under the neck or the connection point of the heating hood with the mold.

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The plates or plate parts 10a, 10b of the plate lining 10 are preferably made of a highly insulating, refractory material and placed side by side together, the adjacent panels being firmly connected by refractory members 22, the thickness of which is less than that of the panels 10a, 10b. The plates preferably have a thickness of 16 to 38 mm. The panels have substantially flat front and back panels rear surfaces 23 and 24 which form the inner and outer surfaces, respectively, of the hollow heating hood liner when the Liner 10 is folded. In the view of the Pig. 3, the plates 10a, 10b have flat upper and lower edge surfaces 27, 28, which adjoin the front and rear surfaces 23, 24 and extend in the transverse direction, and planar, adjoining Side edge surfaces 30, 31 which adjoin the front surface and extend towards the rear surface but terminate at a distance from the rear surface 24. The top and bottom edge faces 27, 28 are preferably tapered so that they enclose an obtuse angle with the front surface.

The adjacent side edge surfaces 30, 31 of adjacent ones Plates 10a, 10b are at a distance from one another and are opposite one another. They are so inclined that they with the Front surfaces 23 enclose an obtuse angle. The adjacent side edge surfaces 30, 31 are flat and are relative to one another inclined so that they come together at a point between the front and rear surfaces 23, 24 of the plates.

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and delimit grooves 32, the bottom 33 of which is at a distance from the rear surface 24 of the plates, preferably about 4 to 5 mm from the latter. The grooves 32 are V-shaped, and the adjacent side edge surfaces 30, 31 enclose an angle. The angle of the groove is different depending on the number of plates in the liner and the angular distance over which the plates move%, need to coincide with the opening in which they are to be inserted. If, for example, there are four panels in the lining arrangement which is intended to form a complete lining, the angle of the groove is approximately 90 °. In the in Pig. In the embodiment shown in FIGS. 1 to 4, the angle is approximately 45.

Lie refractory members 22, which firmly connect the adjacent panels 10a, 10b, extend between the base 33 of FIG Grooves 32 and rear surface 24 of the plates - these parts 22 are breakable and expand substantially along the bottom 33 of the V-shaped grooves 32 when the plates 10a, 10b are relative be moved to form the high lining, as will be better seen from below.

The panels 10a, 10b of the preformed liner 10 are also hinge-like by a flexible support or hinge device 40 connected to one another, which are attached to the lining and preferably essentially incorporated in the same.

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is in bed. The hinge 40 may be of any suitable construction and are auegebildet of any suitable material having sufficient strength to carry the respective plates when the frangible portions have been broken 22 · The hinge means is preferably a flexible wire mesh or wire mesh · Jk The flexible wire mesh or mesh is preferably entirely embedded within the material, a distance behind the base 3-3 of the grooves 32 and between the base 33 of the grooves 32 and the rear surface 24 of the panels 10, 10b. The thickness of the wires forming the wire mesh is somewhat exaggerated in the drawings for reasons of clarity.

The materials and the mixtures from which the rings and plates are made can be different within certain limits, but in cases where the highly insulating Lining in a cast iron jacket or in a chill mold is to be used, as shown in the drawings, the Lining is preferably made of a material which contains a granular, refractory filler such as silica flour having a particle size substantially all of which passes through a 0.074 mm (200 mesh US sieve) sieve, a heat-decomposable binder and a organic fiber material such as wood pulp and paper pulp and / or inorganic fiber material such as slag wool or as-

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"best, or a synthetic inorganic fiber material. The fiber material is preferably an asbestos material or a synthetic fiber material. A material of this kind is described in U.S. Patent No. 3,733,047.

The material can essentially be composed as follows

be: Λ

Component area (parts by weight)

Granular refractory filler 79-90

Binder 5-10

Asbestos with less than $ 6 water 5-10

Organic fiber material less than 2

The asbestos material is preferably Amositasbest and may contain a proportion of chrysotile asbestos, but in amounts not sufficient to at an impermissible water content mono- g accommodate. For example, the asbestos in the ring may contain 25% ghrysolil asbestos. Crocidolite, anthophyllite, and tremolite are other examples of low-water asbestos that can be used. Other refractory fillers such as diatomaceous earth, magnesia, clay, or forsterite are also useful.

The fine-pored structure that was used in the manufacture of the hats is formed, gives the panels a high insulating capacity. The high insulation properties of the panels can be achieved by the thermal conductivity

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ability or the K number of the material. The K-number is here, as is known, the amount of heat in BTU (1 BTU = 0.252 Kcal), which by a plate with a thickness of 1 inch English and an area of 1 square foot English in one hour per degree Fahrenheit temperature difference between the hot and cold side or face of the plate flows. The K- ^ number changes with the average or mean temperature between the hot and cold surfaces of the material. The present plates are highly insulating, since they have a K-value of less than 1.5, calculated for a range of average or mean temperatures of 1000 F to 175O ^{0 0} F. This means, of course, that less than 1.5 BIU through 1 square foot of 1 inch thick plate is lost in one hour for every degree F of temperature difference between the hot and cold surfaces of the plate by conduction. The relatively low K number shows that the plates are highly insulating and are particularly suitable for use in a heating hood jacket without a ceramic lining or directly in a mold.

The panel liner 10 is preferably made by a wet molding process formed by means of vacuum or pressure, whereby the flexible wire mesh is immersed in the aqueous slurry in the mold is immersed and wherein the panels 10a, 10b are formed in an open, unfolded position side by side, as in FIG 3, in a manner to be described in greater detail below.

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The panel liner can be folded from its unfolded position (Pig. 3) into a position in which the adjacent side and corner panels 10a, 10b are at an angle to each other to form a tubular container which is pushed into the opening 13 of the metal shell 11 will. Here, the adjacent plates 10a, 10b are gripped and the flexible one. Braid 40 is bent and stretched on and along the frangible portions 22 between the m panels to an angle necessary to bring the adjacent side edge surfaces 30,31 of the panels into abutment with one another. During the folding movement of the adjacent panels 10a, 10b, the frangible portion 22 breaks between them so that the flexible braid 40 can be bent so that the adjacent side edge surfaces 30, 31 of the panels 10a, 10b properly engage to close the tubular container form. The flexible braid holds the panels together after the breakable parts 22 are broken. After the preformed lining 10 has been "folded" to form the heating hood lining, it is pushed into the opening 13 of the metal jacket up to the upper end. The cover ring 16 and the abutment ring 18 are then fastened and the heating hood A in the opening at the upper end The liquid metal to be poured into the raw block is then poured through the hollow opening 13 in the heating hood A and the heating hood is filled to the desired height -

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tails in the heating hood A flows through gravity into the ingot located in the mold in order to reduce the shrinkage of the Equalize metal during solidification.

It has been found that by arranging the breakable parts 22 for connecting the adjacent plates 10a, 10b to form a unit, a strong, flat construction is achieved which can be transported without significant breakage. However, when the adjacent panels are folded, they form a tubular container which is supported by a heating hood jacket or mold wall. By sandwiching the flexible wire mesh 40 in the panel liner 10 near the bottom of the grooves but between the bottom of the grooves and the rear surfaces 24 of the panels, the adjacent panels can be folded so that their adjacent abutment surfaces are along their entire length Length in engagement. By creating sufficiently tight butt joints between the adjacent panels, seepage of the metal through the joints and behind the panels is minimized. It has also been found that when the flexible wire mesh is substantially embedded between the rear surfaces of the plates and the bottom of the grooves, the plates reinforced by the wire mesh can withstand rough handling and that the liners hold together and are usable even if bil is in the boards during the transport, storage and handling of ^the cracks * 009 882 / 07U

It should be noted that since the central opening 13 of the shell 11 is tapered, the panel liner 10 is designed to form a generally trapezoidal tubular container when folded. In the flat, unfolded state, as shown in "Pig. 3, the platen liner is divided into segments 10 and slightly arcuate with the plates 10b 10a have a trapezoidal shape and the plates a Rechteckforin. Tapering the central opening of the shell not, but if it is formed by parallel sides, the plate lining has the shape of a rectangle in its flat state and forms a substantially cylindrical container in the folded state.

Fig. 5 shows another possibility, such as the panel lining 10 can be used to form a heating hood. The panel liner 10 is here in the open upper end of the Mold 50 inserted and attached directly to the same. "The mold 50 shown in Fig. 5 is a known, conventional, Normally conical mold with a central opening 52 which tapers from the bottom upwards. In a normal conical mold In the mold, the central opening 52 tapers in such a way that it is larger at its lower end than at the upper end. The invention can of course also be used for inverted conical molds and for molds with different outlines.

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When the panel liner 10 is folded into a tubular container or shape that conforms to the sides of the opening 52 corresponds, it is pushed into the opening of the mold 50 and an.den inner sides delimiting the opening 52 with the aid attached or retained by any suitable or conventional means to form a heating hood. When the plat- ^ ten liner 10 is attached, the molten metal to be poured into an ingot can through the tubular container to be poured to a desired level to ensure that some of the molten metal is at the top of the ingot located in the mold will flow downwards to reduce the shrinkage of the metal in the solidifying Balance raw block.

In the preferred embodiment, the lining has the cover ring 16 to protect the jacket, although it is a self-changing diges part, but from the same type of material as the panel liner 10 is formed. This material is relatively light and highly insulating and the ring formed from it is very easy to handle. In addition, it has been found that through the Using the Hinges according to the invention, better metallurgical results can be obtained than with those currently in the industry used conventional warming hood cover rings, which are essentially made of silica and soda water glass as binders and are much heavier and less insulating.

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As shown in Figure 6, the ring has an annular outer flange portion 16a which runs along the underside of the shell adjacent the outside thereof, an upwardly sloping frusto-conical portion 16b extending from the smaller dimension of the annular portion 16a leads at the top and ends with a substantially horizontal top surface 16c and a substantially vertical inner surface 16d which extends downwardly from the inner edge of the top surface 16c for a short distance. The inclined part 16b follows the bevel of the lower end of the shell 11, and its outer shape is complementary to the beveled part of the shell. The surface 16d extends inwardly from the axial sides of the shell 11 and forms a support for the panel liner 10. A wire mesh is also embedded in the ring and extends around the central opening of the ring. The mesh preferably extends all around the Öff- * voltage around.

The cover ring 16 not only ensures better metallurgical properties Conditions, but it forms together with the panel lining 10 an insulating lining for all surfaces of the shell 11, which must be protected from molten metal, thus creating a complete, lightweight lining that is easy to handle and can be transported in the smallest possible space.

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Am novel and economical process can be used to manufacture the plate liner and the ring can be used. The process essentially comprises a one-step molding operation for the plate lining and for the ring in which the plates 10a, 10b and the breakable parts 22 are molded in one piece and the flexible wire mesh is embedded in the fireproof material. The individual stages in the implementation of the method will now be made with reference to the description of a device 55 for carrying out the method described, which is shown in Figs. 7 and 8 schematically.

The device 55 for carrying out the method according to the invention has a vacuum box 60. This is a box with an open upper end of the desired shape in which a vacuum screen 61 is horizontally arranged and of one strong grid 61a which extends across the box at its upper end. The box 60 is with an upwardly facing, circumferentially extending support shoulder 62 on which the vacuum screen 61 and the grid 61a rest. The vacuum screen 61 defines together with the sides and bottom of the box 60 a vacuum chamber 63, the is arranged under the vacuum screen 61. The vacuum chamber 63 can be connected to a suitable vacuum source to create a vacuum in chamber 63. The presence of dee Vacuum in chamber 63 is generally indicated by arrow 64.

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The profile molding frame 70 has an outer frame part 71, the is designed so that it ensures the outer peripheral shape of the plate liner 10 in its flat position (Pig. 3). A plurality of spaced rod members 72 extend transversely between the upper and lower ones (Fig. 7), extending substantially in the longitudinal direction parts of the outer frame part 71 'and they are on these in appropriately attached. The bars 72 serve to form the grooves 32 in the panel liner 10 and are spaced arranged relative to each other and to the outer frame 71 so that they with the outer frame 71 the shape of the plates to be formed Delimit 10a and 10b.

'tile is best seen in Fig. 8, the rods are V-shaped to form the V-shaped grooves 32 in the panel liner 10 to the. The inner vertical sides 75 of the outer frame part 71 are correspondingly profiled or beveled and shape the. freer; Side edge surfaces 30 and 31 of the two edge panels. The surfaces at the top and bottom of each plate are chamfered and formed by the corresponding surfaces of the frame 71. The outer frame part 71 has a flat lower surface 76 which rests directly on the vacuum screen 61. The lowermost portions 78 of the rods 72 are spaced above the plane of the lower surface 76 of the outer frame member 71 and thus above the vacuum screen 61 for reasons which will be described in more detail below.

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When performing the procedure, the flexible wire mesh is used 40 placed directly on the vacuum sieve 61, whereupon a profiled mold frame 70, which relative to the box 60 is movable, is placed on the vacuum screen 61.

After the profiled mold frame 70 on the vacuum screen 61 on « fe has been set to form a mold, it is made the same with a slurry of suitable composition as that in the foregoing mentioned U.S. Patent No. 3,733,047. The slurry covers the vacuum screen 61 and surrounds the rod members 72, flowing under them to form the breakable parts 22. The pulp also surrounds the wire mesh, around essentially embedding the same in the slurry. By creating the vacuum 64, the slurry is partially dewatered, so that a damp mat is left behind. The profiled mold frame 70 is then moved upwards with respect to the vacuum box 60, to remove it from the damp mat which will subsequently form the panel liner 10.

By using the rod members 72, their lowermost parts at a distance from the vacuum screen 61 in an upward direction are arranged so that the slurry flows under the rod members, a precise distance between the adjacent abutment surfaces becomes 30, 31 of the adjacent plates achieved. This in turn causes miter joints when the panel liner to one tubular container is folded, and a proper fit

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the lining achieved in the heating hood jacket or in the mold. In addition, it has been found that the use of this molding process enables the panel liners to be manufactured more quickly since air leakage through the slurry around the bottom surface and sides of the rod members is minimized. Thus, the method helps prevent the vacuum leakage around the periphery of the panels U and allows the panel liners 10 to be manufactured at a relatively low cost. The fact that the flexible mesh is essentially embedded within the refractory panel lining also minimizes or eliminates any detachment of the panels from the mesh and breakage of the panels.

The bezel can be made in a similar manner, i.e. by adding a refractory slurry of suitable composition on a braid corresponding to the ring shape is partially drained by placing the pulp against the shaped braid is pressed by a pressure or vacuum system, or a combination of the two.

The invention also relates to the creation of a panel lining, which can be used in a heating hood jacket which has rounded corners, as shown in FIG. The one shown in Fig.9 The hood jacket is limited by flat sides 80 opening, which are connected by arcuate corners 81.

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The panel liner has panel members 84, each correspond to the flat sides of the heating hood, and corner plate parts 85, each of which corresponds to a rounded corner 81 assigned to it, which it is intended to cover) in the embodiment according to FIG. 9, a corner plate part 85 is between every two Side plate parts 84 arranged, and the construction of Panel lining is essentially the same as in the first described embodiment, with the exception of the Eokplatte parts 85 specially designed for use in an arcuate corner. In each of the corner plate parts A plurality of V-shaped grooves 85 are formed in the front side thereof. The grooves 86 extend from the upper to lower end of the panel liner and divide the corner panel part into a plurality of parts 87t that extend extend the height of the plate and are angularly movable with respect to one another to conform to a rounded corner. In a tapered warming hood construction, the grooves converge roughly in the direction from the lower to the upper end of the Panel lining, as in the case of the large panel parts. The grooves 86 are made in the same manner as the grooves 32 of the first described embodiment formed to ensure a relative angular movement between the partitions 86, in the same way as uie the relative angular movement of the plate parts 10a, 10b of the embodiment described first is ensured. This makes it possible to use the corner plate part in the to convey flat condition and only when using the

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To move corner plate parts relative to one another and to the side plates and to adapt to the opening. As a result of the movement of the plate parts, including the partitions, relative to one another, the adjacent plate parts are placed against one another with the adjacent edges. The outer sides of the flat ropes immersion each corner panel respectively along a short chord of the corresponding rounded corner and ensure a satisfactory dt seat in the rounded corner. The number and depth of the grooves 86 and the angle included by the sides of the grooves of each corner portion depend on the radius of curvature of the arcuate corner of the shell. The V-shaped grooves in each gusset portion are formed such that the sides of each groove, ie, butt surfaces 90, engage face contact when the gusset portion is folded to conform to the rounded corner it is intended to protect. In view of the fact that the construction and the puncture of the subdivisions of the corner plate parts are the same as the construction and the puncture of the adjacent hats in the first described embodiment, as well as in view of the fact that the corner plate parts with the adjacent side plate parts in the same Y / are molded, as in the first described embodiment, the construction, molding process and operation are not repeated; It should be noted that the corner panel parts are shaped so that the flexible connecting material is located near the rear of the corner parts and that it is between

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- 28 -

see the subdivisions between the bottom of the V-shaped grooves and the rear of the panel liner extends.

It will be apparent to those skilled in the art that the frangible portions 22 must be removed prior to the actual use of the liner can be broken in a coat. In such a case, the breakable portion 22 is useful in manufacture a commercially acceptable one-piece liner.

While the various parts of the preferred embodiments have been described in detail, so too can other equivalent elements may be used.

Claims

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Claims (1)

- 29 patent claims 1. Insulating lining, which is a highly insulating, fireproof panel lining for lining a metal jacket having, characterized in that the panel lining Front surfaces and a rear surface remote therefrom has j and a plurality of plate parts with front surfaces, which form the adjacent inner surfaces of a warming hood opening, that the plate parts have shaped abutment surfaces, the abutment surfaces of adjacent plate parts facing each other and the abutting surfaces with the front surface of their plate part enclose a blunt 7 / inch that breakable, refractory material is arranged lying between the plate parts in the area of the rear side of the plate lining, wherein the breakable, refractory material a relative angular movement of the plate parts from an open shipping position in which opposite- " de abutment surfaces of adjacent refractory plate parts are at a distance, in a position in which the the joint surfaces of adjacent refractory panels are essentially in contact in order to adjust the refractory panels so that that they form the inner surfaces of the warming hood and leak through of liquid metal behind the panels prevent the panel liner from being a vacuum or compression molded one-piece configuration and that the plate parts are made of a material that is a granular, refractory material, a heat-decomposable one Contains binder and a fiber material. 009882 / 07U - 30 - 2. Highly insulating, refractory plate lining according to Anspruoh 1, characterized in that it further has an embedded hinge device which extends between the Fireproof plate parts extends and the same interconnect, and that the fiber material contains asbestos. 3. Highly insulating, fireproof panel lining according to claim 1 or 2, characterized in that the panel parts at an average temperature of the interfaces ffiäeke »in the range of 175O ⁰ F to 1000 ⁰ F a K number (BTü / H4 ⁿ ^ h- ⁰ F ) less than 1.5. 4. Highly insulating, fireproof panel lining according to claim 1, 2 or 3 »characterized in that at least one of the refractory panel parts of the panel lining tapers vertically. 5. Highly insulating, refractory panel lining according to claim 1, 2, 3 or 4, characterized in that the panel lining inside a warming hood jacket without a ceramic one Lining is attached. 6. Highly insulating, refractory panel lining according to one of claims 1 to 51 daduroh characterized in that the panel lining is an integrally molded unit of two or more refractory panels in each unit. 009882 / 07U 7. Highly insulating, fireproof panel lining according to one of claims 1 to 6, characterized in that the hinge device has a flexible wire mesh, which essentially occurs within the panel liner the! underside of the same is embedded adjacent. B. panel lining for heat hood casting, characterized in that that it has front sides and a rear side remote therefrom and a plurality of plate parts with front surfaces which form adjacent inner surfaces of a tubular container that the plate parts have abutting surfaces, wherein the abutting surfaces of adjacent plate parts are opposite to each other and each in a plane which is with the front surface of the plate part includes an obtuse angle that stiff material is arranged between the plate parts on the rear side of the plate lining that the stiff Ivlaterial is breakable to allow relative angular movement of the plate parts from an open shipping position in which the opposing abutment surfaces of the adjacent plate parts are spaced apart located, to allow in a position in which the spaced abutment surfaces of adjacent plate parts substantially in contact to adjust the plates to form the inner surfaces of the tubular container and prevent liquid metal from seeping behind the plates, and that the material between the plate parts, breaks at the relative angular movement. 0098 8 2 / 07U 9. heating hood according to claim 8, characterized in that the abutment surfaces of the adjacent plate parts a substantially Limit V-shaped groove. 10. Warming hood according to claim 8 or 9> characterized in that that the panel liner is a one-piece vacuum or pressure P forms unit, and that the plate parts are made of a material which contains a granular, refractory insulating material, a heat-decomposable binder and an inorganic fiber material and in a range of mean temperatures from 100O ⁰ F to 1750 ⁰ F a K-factor of less than 1.5. 11. Panel lining made of refractory material for warming hood casting and for insertion into the central opening of an annular metal structure at the upper end of a mold, wherein the structure has substantially flat surfaces connected by arcuate corners formed by the Panel liner to be protected, characterized in that the panel liner has a front which the surfaces of the opening in the construction form that it has an underside which is substantially parallel to the front side in that it has a plurality of shaped grooves which open from the front to the rear of the panel liner and a plurality of panel members limit, to which the first and second flattening parts 009882 / 07U which correspond to the first and second sides of the structure, and a plurality of third plate parts which form a corner plate which conforms to an arcuate corner of the structure and connects the first plate part to the second plate part, the sides of each of the grooves in FIG Converge towards the outside and form opposing abutment surfaces on adjacent plate parts ™ that the depth of the grooves is smaller than the distance between the front and the rear, that the refractory material between the grooves and the rear of the plate parts is breakable js ± and a relative angular movement of the plate parts ensured from an open shipping position, are located in the opposing abutting surfaces of adjacent plate members at a spacing, in a folded position in which the ütoßflächen the adjacent plates are in contact to a substantial depth to the plate portions so mono- Λ notify that they inn Forming surfaces of an opening extending through the structure, and that the panel liner has a flexible, non-breakable device at the rear and holds the panel parts together after the breakable material has broken. 12. Panel liner according to claim 11, characterized in that it is an integral compression-molded unit from a refractory material is welohee essentially made of a fiber material, a refractory filler for the fiber material and an organic binder. 009882 / 07U 13 · Panel lining according to claim 11 or 12, characterized in that that it is a unitary molded unit and that the pliable material in the refractory material is attached to dea The back of the panel lining is embedded in a fitting manner. H. Panel lining according to claim 11, 12 or 13 »thereby ^ characterized in that the flexible material is one at the rear the panel lining is embedded wire mesh. 15; Insulating lining that is a highly insulating, fireproof Plate lining for lining a metal jacket characterized in that the panel liner has front surfaces and a rear surface remote therefrom and having a plurality of plate members having front surfaces which are adjacent inner surfaces of a heating hood opening form that the plate parts have an abutment surface facing each adjacent plate part, each of the abutment surfaces lies in a plane which includes an obtuse angle with the front of the plate part that the refractory material dit Plate parts at the rear of the plate lining connects that the refractory material is breakable to a relative Angular movement of the plate parts from an open shipping position in which the opposing abutment surfaces from adjacent ones Plate parts are at a distance to allow in a position in which the abutting surfaces located at a distance 009882 / 07U Chen of the "adjacent plate parts substantially in contact to adjust the refractory panels to form inner surfaces of the vault and prevent seepage ^ eaci.aolzenem metal behind the plates prevent that Refractory material breaks between the plate parts during the relative angular movement, so that the plate lining is a one-piece A molded unit is that the plate parts are made of a material made sina, which is a granular, refractory Material, a heat-decomposable binder and an i'asermaterial Contains that a cover ring for carrying the plate lining and for the protection of the lower end of the luetallmantels is provided, and that the ring is made of an Ivimaterial, which-a granular, refractory material contains strand decomposable binder and a fiber material. 16. Insulating lining according to claim 15, characterized in that that a wire mesh is embedded in ueni material is, wherein the plane of the braid extends around the opening of the ring around. 17. Annular cover ring for a heat-proof ketallic jacket, This is characterized by the fact that it is made of a lightweight insulating material is made, which has a thermal conductivity of 1.5 or below and essentially made of a fiber material and a heat-decomposable binder. 0 0 9 8 3 2 / Π 7 1 A _{BAD 0} F.; GiNAL 18. Cover ring according to claim 17 »characterized, üaß the granular refractory material of the ring is at least 79% by weight. 19. Isolating lining according to claim 17 or 18, characterized characterized in that a! wire mesh is embedded in the material, wherein the plane of the mesh is around the Opening of the ring extends around. 009 882/07 U BAD ORIGINAL