Abstract: The invention relates to an electromagnetic casting apparatus having an annular coolant jacket wherein a ring-type electromagnetic inductor is employed as the innermost wall of the coolant jacket and the inductor is preferably provided with conduits to direct coolant from within the coolant jacket onto the metal being cast.

Abstract: A metallurgical furnace vessel is provided with means for injecting fluid into a melt in a vessel, the fluid carrying materials reactive with the melt and incidentally causing rapid erosion of the vessel's wall portion above the location where the fluid is injected. This wall portion is provided with cooling means and is made so that it can be removed for repair or replacement.

Abstract: A DIP lead former including a cabinet housing an electric motor, a pair of lead forming rollers disposed in side-by-side spaced apart relationship and driveably coupled to the motor, an elongated forming rail located between the lead forming rollers for transporting DIPs into engagement with the rollers, an upper guide for guiding the DIPs along the forming rail, and a pair of adjustment knobs for varying the distance between the upper guide and the forming rail.

Abstract: An injection-molding apparatus for making ceramic moldings has a mold provided with a mold cavity, a structure formed with a passage which communicates with the mold cavity, and an injecting arrangement for injecting the molding material via the passage into the cavity. The injecting arrangement has a cylinder a front end of which is provided with an outlet communicating with the passage, and which also has a material inlet rearwardly spaced from the outlet. A ram is reciprocable in the cylinder between a first end position in which it is located rearwardly of the inlet and another end position in which it is located forwardly of the inlet and close to the outlet. The ram carries a rearwardly extending skirt which extends across the inlet when the ram is in its forward or second end position, so as to prevent material from entering the cylinder behind the ram through the inlet.

Abstract: An apparatus for preventing the transmission of converter oscillations in the blowing phase onto the converter carrying bearings and the converter drive, wherein at least one of the carrying trunnions of the converter is driven by a spur gear with a plurality of slip-on gears arranged around the periphery of the spur gear wheel and at least one of the drive pinions of the slip-on gears can be braced relative to the spur gear wheel and the torsion flank play is compensated.

Abstract: An apparatus for introducing additives into a casting mold having a flow path for directing a stream of molten metal into a casting cavity formed within the casting mold, and a mixing chamber in the flow path being in registry with a substantially endless wire of additive material continuously fed into the mixing chamber for erodibly substantially completely mixing with the molten metal flowing through the mixing chamber prior to its entry into the casting cavity.

Abstract: A method of molding finger rings of the type having a hollowed-out interior portion, but whose exterior surfaces are identical to rings without such hollowed-out portion comprising securing a wax, shell ring pattern to the exterior surface of a wax, tubular section to form a wax ring pattern and molding a finger ring from said wax ring pattern via an investment method of casting.

Abstract: An apparatus for adding a metallic additive to a molten metal having a temperature higher than the boiling point of the metallic additive comprises a double-walled ladle structure having an adiabatic space formed between inner and outer containers which constitute the ladle structure, and a lid. The lid is adapted to close the top opening of the ladle structure so that a substantially hermetically sealed working chamber can be formed therein and above the surface level of the molten metal within the inner container. The working chamber is, when the lid is in position to close the ladle opening, held in communication with the adiabatic space through a plurality of vent passages.

Abstract: A process of producing steel ingots having a steel composition at the skin hich differs from that at the heart comprises tapping incompletely killed steel from a tapping ladle into an ingot mould, adding a deoxidizing agent to the steel in the mould, intensively mixing the steel for a period in minutes equal to at least half the height of the ingot in meters and decanting the inclusions in the steel, both the intensive mixing and decant taking place during the basaltic crystallization phase.

Abstract: Apparatus for electroslag remelting of at least one consumable electrode in a cooled mold assembly with a cooled bottom plate having mechanism accomplishing relative movement between at least a part of the mold assembly and the ingot being formed during forming of the ingot. Movement of selective parts of the mold assembly relative to the ingot and/or the electrode is provided with or without movement of the electrode itself. Structure for bottom pouring of molten slag is provided. A specific mold assembly has, as an element, a cooled core device enabling making hollow ingots, in which case the hollow core device can be moved axially, reciprocated axially and reciprocally rotated during forming of the ingot. Electrical power for the electroslag remelting can be connected between the consumable electrode and any or all elements of the mold assembly.

Abstract: A two part bushing or guide pin for aligning foundry flasks, hot boxes, and the like comprising: a machinable body portion having external threads for threading into a flask, hot box, etc., and internal threads for receiving either a hardened nonmachinable guide ring or a hardened nonmachinable guide pin.In the case of the hardened nonmachinable guide ring, the outer surfaces are provided with hardened ground threads adapted to be threaded into the internal threads of the main body portion. Suitable means is provided for locking the ring in angular relationship with the body after it is threaded therein. The construction permits the main body portion of the bushing to be firmly seated and locked in a flask, etc., following which the hardened ring can be rotated within the main body portion until its surfaces are accurately angularly positioned relative to the flask, and the ring then locked to the bushing.

Abstract: In making columnar grained castings the shell mold is spaced from the chill plate by a ceramic ring on which the mold is positioned, the ring being made thicker and/or of a different ceramic from the mold to withstand the thermal stress developing while the mold is being heated for pouring, so that the mold, not being subjected to such stresses at the base, may be made thinner for producing better castings. In this way the best mold material for the purpose may be selected, as, for example, a material to have no reaction with the alloy and, by lowering the thermal gradient decrease the likelihood of mold failure.

Abstract: A machine in which there is provided a mold mounted on a base plate, a main electrode and an additional consumable electrode and a power supply source connected to the additional electrode and coupled by means of a switch alternately either with the main electrode or with the mold. To effect the remelting process in the above machine, the additional electrode, insulated from the mold, is introduced into the lower portion of the mold melting space, after which a part of the mold melting space is filled with molten slag, the power supply source is connected to the mold and a metal bath is established on the additional electrode; then the main electrode is introduced into the slag bath, the power supply source is disconnected from the mold and connected to the main electrode and melting continues until a casting is melted.

Abstract: A mould for casting at least one component of a complex-shaped metal article, the mould having in the fusion area at least one hole hole fitted from the mould interior with a slot whose geometric dimensions ensure the formation of a slag blanket in the volume which is required for a uniform heat removal in the fusion area. The number of the holes correspond to the number of the article components to be joined by fusion and the geometric dimensions and contour of the holes matching those of the article components to be bonded by the application of a fusion process.

Abstract: A method for making beam leads for use in the interconnecting of electronic packages to a substrate. Metal foil, such as copper, is etched to form a plurality of beam leads and then a second metal having poor adhesion with said metal foil is deposited onto the metal foil. The second metal is then separated from the metal foil and the metal foil is reuseable as a depository for another deposition of the second metal which is the desired beam leads.

Abstract: To move the die parts and cores into position for a casting operation, a plurality of pneumatic cylinders are mounted between two parallel plates of the head of a casting machine and arranged so that they each move a different one of a plurality of die parts and cores of a die from any of several angles, exerting primarily tension on the plates rather than torsion, with each cylinder including an internal locking mechanism having locking balls that drop into holding grooves to hold the piston of the hydraulic cylinder in position with sufficient strength to withstand the pressure of the molten metal applied to the die. To inject the molten metal into the die, a nozzle spool is moved in a straight line to communicate with the interior of the die between two die parts, the molten metal being fed to an annular recess around the spool by an injector and from the annular recess through openings in the spool into a central conduit that communicates with the interior of the die.

Abstract: A method of applying flux powder to the bath level of liquid metal within a continuous casting mold during continuous casting operations, wherein the distribution of the flux powder at the surface of the bath level is measured by measuring elements, and as a function of the measurement results there is controlled the infeed of flux powder and the distribution thereof at the bath level.

Abstract: An apertured casting is made by first forming a duplicate in the shape of the finished casting, positioning refractory metal bodies such as wires in the duplicate at points corresponding to apertures or passageways in finished products, forming a ceramic coating on the duplicate, removing the duplicate material, firing the ceramic in a vacuum or inert atmosphere, vacuum casting the metal in the ceramic form, removing the ceramic form, heating the cast object in an atmospheric furnace to oxidize the refractory metal bodies and then leaching the oxidized refractory bodies from the casting with a molten caustic agent or acid solution.

Abstract: A method of casting an ingot which comprises locating in an ingot mould a vertical tube of fibrous heat-insulating material of melting point less than the casting temperature of the metal of the ingot, and teeming molten metal into the mould.

Abstract: A method is provided for adding reactive metals to a molten metal bath by forming said reactive metal into an elongated member, suspending said member generally lengthwise vertically of a mold and pouring metal to be treated into said mold, to make said formed member an integral part of the molten metal as it rises in the mold and is cooled.