Abstract: In a continuous casting process for steel, a molten core inside a strand is stalled at a specific point Q in a pass line of the strand to form a cored portion including no molten steel in the strand downstream of the specific point Q, and the cored portion is rolled by a pair of rolls under pressing into a solid strand in the latter half of a strand drawing stroke. The resulting solid strand comprises a skin formed of a chill crystal and the interior formed of a columnar crystal by addition of proper casting temperature. A through continuous casting/rolling process in which the above improved continuous casting process is combined with a subsequent hot rolling process is also disclosed. A drastic increase in the casting efficiency, an improvement in quality, and an equipment capable of freely adjusting a casting thickness can be resulted so that direct coupling between continuous casting and rolling is achieved and near-net-shaping of various steel materials is promoted.

Abstract: Process and apparatus for continuous casting of metal strip in which a layer of liquid parting agent, and any solid detritus contained therein, is completely removed from a casting surface of a rotating belt after contact with the metal, and in which a new layer of liquid parting agent is applied to the casting surface thereafter and prior to renewed contact with the molten metal. The removal of used parting agent and the application of fresh helps to present the formation of surface blemishes and defects on the cast metal strip product. Such blemishes and defects can also be minimized by using an injector having a flexible tip used to inject the molten metal onto the casting surface and preferably one or more spacers to create a gap between the tip and the casting surface itself. The spacer is preferably a screen of wire strands orientated to minimize disruption of the new layer of liquid parting agent applied to the casting surface.

Abstract: A tundish used in a continuous steel casting operation is sealed to permit effective purging of the tundish to eliminate free oxygen and nitrogen by providing a plurality of generally rectangular planar sealing boards of refractory fiber material having sufficient density to be self-supporting and placing the boards in side-by-side relation on the open top of the tundish prior to installation of the refractory cover whereby the sealing boards form a gasket between the cover and tundish top wall, and form a continuous panel underlying the cover. The refractory fiber material may be penetrated by the ladle shroud tube and/or the tundish stopper rod(s).

Abstract: A die for use with a die casting machine comprised of a left hand die half, a right hand die half, in which the die halves close on a part line, an injection nozzle seat, an injection fluid inlet, a runner and a cavity, the invention comprising a left hand die half having a protrusion extending over the part line when the die halves are closed, the top of the protrusion forming the base of the injection fluid inlet when the die halves are closed, the bottom of the protrusion is spaced from the upper surface of the lower part of the right hand die half

Abstract: Apparatus for removing burrs from flame cut steel slabs including multiple deburring pistons extendably mounted in a piston body. Pressurization of the piston body causes extension of the pistons, while rotation of the piston body positions the deburring pistons at an inclined angle with respect to the work piece.

Abstract: Disclosed is a method and apparatus for rapidly producing a metal component from partially solidified metal slurry. A source of metal alloy slurry is provided and maintained under conditions to maintain the slurry state, for example by shearing at a temperature between a liquidus and solidus thereof. The slurry is dispensed through a source nozzle and deposited upon a substrate or upon previously dispensed slurry in a predetermined, controlled manner to produce a component of desired geometry. The substrate may be planar or contoured and may comprise an element of the component being produced. A temperature, pressure or chemical composition controlled deposition environment may be provided to facilitate producing a component having desired characteristics.

Abstract: The present invention pertains to a process for preparing ceramic shells as casting molds, wherein a) a pattern of a part to be cast, which pattern can be melted or dissolved out, is prepared, b) the pattern is dipped into a dip-coating composition of a slurry of a refractory material and a binder in order to form a wet coating on the pattern, c) a coarse refractory powder is sprinkled onto the coating, d) the coating is dried, and e) steps b), c) and d) are repeated until the mold shell has reached the desired thickness. A ceramic protective material is added to the dip-coating composition and/or to the coarse refractory powder. Carbon is introduced into the ceramic protective material during the preparation in the molten state. The carbon is able to chemically bind oxygen at the time of the cooling of the casting essentially at mold temperatures above the firing temperature of the casting mold and is thus able to prevent skin decarburization and surface defects in carbon-containing steels.

Abstract: A method and apparatus for the accurate formation of a three-dimensional article comprises providing a supply of substantially uniform size droplets of a desired material wherein each droplet has a positive or negative charge. The supply of droplets is focused or aligned into a narrow stream by passing the droplets through or adjacent an alignment means which repels each droplet toward an axis extending through the alignment means. The droplets are deposited in a predetermined pattern at a predetermined rate onto a target to form the three-dimensional article without a mold of the shape of the three-dimensional article. A supply of support material is provided in a predetermined pattern adjacent the deposited droplets. The support material receives a further supply of droplets which form a part of the three-dimensional article.

Abstract: Apparatus and method for closing, connecting, clamping, unclamping, disconnecting and opening the die halves attached to a moving platen and fixed platen of a the die casting machine comprising clamping means, open-closing means, and connecting-disconnecting means, the clamping means comprising a clamping cylinder and a clamping piston, the open-close means comprising an open-close cylinder connected to the rear of the moving platen and an open-close piston connected to the interior center of clamping cylinder, the open-close means comprising an insertion or removal of an insertion between the clamping piston and the open-close cylinder.

Abstract: In order to create a wear-resistant hard-surfacing for the rolls of high-pressure roll presses for the compressive size reduction of granular material, which is suitable for autogenous wear protection and which is simple from the fabrication standpoint and also exhibits a long potential surface life with minimized danger of cracking, even under the action of high pressing compressive loads, it is proposed in accordance with the invention that a multitude of profiles, such as, in particular, nub pins (17), arranged at intervals from one another, be welded onto the roll surface by mold welding, specifically with the assistance of a mold (11) laid on the roll body (10), which mold is provided with radial through openings (12, 13, 14), which are filled with surface weld metal, after which, after solidification of the weld metal, the preferably water-cooled mold (11) is lifted off the roll (10).

Abstract: Apparatus for removing burrs from flame cut steel slabs having a rotating shaft and burr knocking members loosely mounted on the shaft for impact removal of the burrs.

Abstract: A process and a device are proposed for the casting and unpacking of clusters which, after the casting, after passage over a primary cooling path, are freed by jolting from the surrounding molded clump consisting of mold sand, whereupon, after passage over a secondary cooling path, the individual castings are separated from the cluster. The cluster is cast with a hanger which is present in front in the direction of transport, and the molded clump is conveyed over a discharge shaft for old sand against a transport hook in the manner that the hanger with the transport hook suspended, swings downward, throwing off the predominant quantity of old sand from the molded clump, whereupon the cluster is jolted.

Abstract: A foundry mold member made from a plurality of sand particles bound together with a binder which is concentrated at the contact points between contiguous sand particles and consists essentially of gelatins having a Bloom rating less than about 175 Bloom grams. The sand particles are first coated with a sol of the gelatin, cooled to ambient temperature and conditioned to a prescribed water content necessary to effect migration of the gelatin to the interparticle contact points upon heating of the coated particles in a pattern mold.

Abstract: This invention relates to inorganic no-bake foundry binder systems and their uses. The binder systems comprise as separate components: (A) mono-aluminum phosphate in an aqueous solution containing specified phosphoric acids, and (B) magnesium oxide; and certain specified zinc compounds in either the Component A, Component B or both. The components of the binder system react when they are mixed with a foundry aggregate to prepare foundry mixes which are used to prepare foundry molds and cores. The foundry molds and cores are used to cast metals.

Abstract: A mold flux for the continuous casting of steel (including ultra low carbon steel) comprises refractory metal oxide, at least one fluxing agent, a binder, and expandable graphite in the amount of 0.3-1.0% by weight, the expandable graphite having a size less than about 80 mesh, and the flux in the form of spherical granules 200-500 microns in diameter. The binder typically comprises between about 8-14% weight soda ash, or between about 4-7% by weight lithium carbonate, or a combination of soda ash and lithium carbonate wherein double the percentage of lithium carbonate plus the percentage of soda ash is between about 8-14%. The flux may additionally include--especially where ultra low carbon steel is being continuously cast--starch and MnO.sub.2 to reduce slag rim, improve thermal insulation, and reduce carbon pickup.

Abstract: The present invention relates to an improved process for the preparation and fabrication of horseshoes whereby pure titanium or titanium alloys are processed with the exclusion of contaminating gases such as Oxygen, Nitrogen and Hydrogen. The titanium horseshoes have many advantages over the present state of art such as light weight, higher tensile strength, flexible, wearing resistance, abrasion resistance, hypoallergenic, workability, formability, friction-free, physiologically inert, and are easily formed and shaped into the desired configuration.

Abstract: A casting conduit (5) is attached at a low-level location to a completely sealable furnace (1) for a casting material (2). At this connection, the furnace is provided with an outlet opening (4) which is capable of being closed by a shutter (3). The casting conduit (5) leads down to a mold chamber (6) in which the mold (7) is located. The casting conduit (5) is closed, e.g. in the manner of a tube, and can be connected by a vacuum connection (8) to a vacuum installation together with the mold chamber (6). When the vacuum in the furnace (1) and in the casting conduit (5) resp. the mold chamber (6) is equivalent, the outlet opening (4) can be opened by means of the shutter (3), and the casting material (3) can flow into the mold chamber (6) and into the mold (7) via the casting conduit (5).

Abstract: A pressure casting system including a core having self-cleaning core prints. The core prints are spaced from the bottom wall of the pockets with which they mate, and include channels for admitting molten metal into the print-pocket space so provided.

Abstract: A method for pressure infiltration casting is provided wherein steps of preheating and evacuating a mold cavity and infiltrant charge are carried out in a separate vessel from a pressure vessel wherein the mold cavity is filled, allowing for rapid finished article throughput. An apparatus for pressure infiltration casting is also provided.

Abstract: A method of casting molten material into a strip-shaped product having substantially intended final dimensions that first supplies molten material into the interior of a vessel having a casting nozzle connected thereto. The nozzle is formed of a refractory ceramic material and has a passage extending therethrough from an inlet opening connected directly to the interior of the vessel to an outlet opening. The nozzle is oriented relative to the vessel so that the outlet opening is positioned at a location higher than the inlet opening. Molten material passes from the vessel interior directly through the inlet opening and into the passage until an upper level of molten material in the passage is the same as an upper level of molten material in the vessel interior and below the outlet opening. Solidification of the molten material is commenced in the passage, thereby forming solidifying material.