Abstract: A cooling mold has first and second water cooling jackets provided inside the mold. A primary cooling water jetting mouth is located at a distance between 15 and 40 mm from the meniscus of the molten metal. A secondary cooling water jetting mouth is located at an interval of 20 to 45 mm between a contact point of a primary jet of cooling water and another contact point of a secondary jet of cooling water on an ingot. The primary and secondary cooling water jetting mouths are respectively set at an angle of 15 to 30 degrees and of 30 to 60 degrees relative to the ingot surface. The primary jet of cooling water from the primary mouth impinges on the molten metal cooled in the cooling mold at a distance from the meniscus to establish a transition boiling zone and a film boiling zone. The secondary jet of cooling water impinges on initial zones of the transition boiling zone and the film boiling zone to break-out a vapor film.

Abstract: Low carbon stainless steel parts are formed utilizing a high vacuum of 20" to 29" of mercury during the pouring stage of the lost foam process.

Abstract: A solid material is bonded to a metal cast thereagainst by means of a metallurgical diffusion bond. The solid material is coated with a latent exoergic coating which coating reacts exothermically to produce intermetallic phases at the surface of the solid when the metal is cast thereagainst. The heat generated by the intermetallic-phase-formation reaction promotes the diffusion bond.

Abstract: The apparatus includes a wheel mold that has a top segment having a plurality of openings formed therethrough. Movable cores are carried in the top segment openings. A mechanism is mounted on the top segment to alternately extend the cores into the mold cavity and retract the cores into the openings. To form a wheel, the movable cores are extended and molten metal is introduced into the mold cavity. The movable cores form recesses in the resulting wheel casting. After casting has cooled sufficiently, the movable cores are retracted from the recesses allowing the top segment to be withdrawn from the wheel casting. The casting is then removed from the mold.

Abstract: A vacuum casting apparatus includes a plurality of pressure pins arranged in a molding cavity, and at least one pressure pin is located in a portion of the molding cavity farthest from a gate. The pressure pins are operated to pressurize the molding cavity in an order from the pressure pin located farthest from the gate to a pressure pin located nearest to the gate. A cross-sectional area reduced portion can also be formed in a portion of a runner connecting the molding cavity and the molten metal retaining dome. A molten metal in the molding cavity is thereby suppressed from flowing backward into the molten metal retaining dome when being pressurized by the pressure pins, so that the quality of the cast products is improved.

Abstract: The sprue/riser sleeve 40 has a tubular, preferably cylindrical wall 42 extending between an inlet end 48 and an outlet end 50. The sleeve 40 has a woven mesh filter extending across a central passageway 51 with a periphery 54 of the filter 52 embedded into the wall 42. The periphery 54 has three or more, evenly spaced tabs 56 formed thereon that project further into or through the wall to secure the filter to the wall without materially weakening the wall. Preferably, the filter has a square-shaped periphery 54 with corners 64 that define the tabs 56. The main portion of the periphery extends into the wall less that one-half the thickness of the wall, whereas the tabs extend into the wall a distance greater than one-half the thickness.

Abstract: The liner cap assembly includes an outer tubular sleeve, an inner cowl and a cone portion extending between the outer sleeve and the inner cowl. The cone portion includes a plurality of annular, concentrically arranged directional vanes on a downstream surface of the cone portion. At least the inner cowl and the cone portion are formed by casting. Plural apertures are formed in the cone portion during casting or after casting.

Abstract: Metal parts formed by casting in a foundry and which contain the sand cores used to form internal passages are cleared of the sand cores by subjecting them to temperatures sufficient to pyrolyze and/or combust the bonding agents holding the sand cores together, in a fluidized-bed furnace.

Abstract: The apparatus includes a gripping device (3) for picking up the parts (1, 2) to be joined and at least one screwdriver (6) comprising a screw spindle (10) and a drive (11) for the screw spindle. The screw spindle (10) is resiliently mounted for movement in the direction of the screw feed and it may be laterally adjusted in each of two perpendicular directions so as to permit an accurate alignment of the screw with the parts to be joined.

Abstract: In a method of vacuum casting molten metal sucked from a molten metal reservoir into a cavity held under a reduced pressure by opening a gate having been blocking the communication between the molten metal reservoir and the cavity, the trapping of gas and foreign matter in the cavity is effectively prevented. To this end, an accommodation space for accommodating gas and foreign matter is provided in the molten metal reservoir. The accommodation space is provided at a position from which the accommodated matter is not sucked into the cavity.

Abstract: Metal heated to a molten state is injected under a high hydrostatic penetion pressure into extremely small and closely spaced channels of an insulating matrix to form an array of electrically conductive pins or wires. The materials for the pins and matrix are selected for compatibility with respect to melting, matrix sintering and surface tension penetration conditions associated with the fabrication of a high density charge transfer device.

Abstract: The mold includes a first end molding component having an imperforate exterior face and an interior face with alignment pins and a recess for the receipt of fluid material to be molded; a second end molding component having an exterior face with a horizontal bore and an interior face with alignment holes and a recess for the receipt of fluid material to be molded, the second end component being provided with lateral clamping members, the second component being formed of a pair of laterally disposed subcomponents; a plurality of intermediate molding components, each with alignment pins on one face and alignment holes in the opposite face and with a recess therethrough adapted to be positioned between the end components, the number of intermediate components being a function of the desired size of the molded end products; and a pair of filler molding components both with alignment pins on one face and alignment holes in the opposite face and with a recess therethrough adapted to be positioned between the end co

Abstract: An improved method of and system for die casting an engine block made of aluminum is provided. Included in the system is a calorific fluid for circulating through a bore pin assembly in a preselected temperature range which is continuously maintained by a heat transfer fluid controlling device.

Abstract: In the process, which enables complete automation of casting and limiting the intervention of the operator, the level of metal in the supply runner is monitored, a common law of metal levels is set as a function of time for all ingot molds after individual laws have been applied to each of the molds in order to permit them to meet the common law, lowering of the table supporting the molds is actuated and the casting process is halted when the program length has been obtained. The apparatus comprises probes for detecting the height and levels of metal in the runner and in the ingot molds, and an automation system for adjusting the levels and controlling the various operations.

Abstract: Sand is charged into two spaces defined by a match plate, a pair of flasks, and a pair of squeeze plates, and is then compressed by moving the squeeze plates in the flasks toward the match plate to form the cope and drag molds. The properties of the molding sand are detected during the forming of the molds in order to suitably adjust the sand and the device. The device includes linear encoders connected to the squeeze plates so as to detect the amounts of the movements of the squeeze plates, and an electrode penetrating one squeeze plate so as to detect the electric resistance or the water-content value of the mold in the flask.

Abstract: The mold includes a mold tube having pairs of parallel opposed outer surface portions which extend axially of the mold tube. The mold tube defines an axial casting passage having an inlet end for molten metal and an outlet end for a continuously cast strand of the metal. The mold tube is provided with internal concavities which are uniformly distributed peripherally of the casting passage. The internal concavities, which extend in a direction from the inlet end towards the outlet end, become smaller in this direction and are designed so that the strand is shaped as it travels along the casting passage. To form the mold tube, external concavities are impressed or cut in a tubular blank and a mandrel with external protuberances is then pressed into the blank. If necessary, the tubular blank can thereafter be drawn or otherwise processed to produce the desired outer contour of the mold tube.

Abstract: A device for receiving dental investment solution to create an investment mold, has an oval casing which fictionally engages an oval base. Anti-rotation tabs of the base extend into anti-rotation slots in the casing, with both casing and base made of flexible plastic material.

Abstract: In a vacuum casting method, a mold cavity is reduced in pressure to a vacuum, and when a gate is opened, a molten metal which has been raised to a molten metal retaining dome is charged into the cavity at a high speed. When a portion of a molten metal held in a molten metal holding furnace is raised to the molten metal retaining dome, an upper surface of the molten metal is moved downwardly and upwardly through at least one cycle in the molten metal retaining dome, or a swirl flow is generated in the molten metal in a stalk. Such a unique motion as the downward and upward motion or the swirl flow effectively operates to detach solid metal pieces from an inside surface of the molten metal retaining dome or the stalk to push them to an upper portion of the molten metal. As a result, the detached metal pieces are prevented from being charged into the mold cavity to thereby cause defects in a cast product.

Abstract: The apparatus includes a set of no more than three pairs of deformation rollers for deforming the continuous cast strip. A drive device positioned downstream of the deformation rollers drives the cast strip. Guide rollers are positioned downstream of the deformation rollers.

Abstract: The machine includes a train of molds moving through an arcuate pouring zone, a supply vessel for the metal, a trough extending between the vessel and the mold trains to convey the metal therebetween. The metal is discharged from beneath the surface of the metal in the vessel and into one end of the trough beneath the surface of the metal therein. The other end of the trough is registered with a mold in the trains and moves with the trains while metal is dispensed into the mold from beneath the surface of the metal in the trough. Valves control the discharging and dispensing of the metal to and from the trough. A motor moves the trough, as needed, in the pouring cycle, and a coupler coordinates the movement of the trough and the mold to keep them registered in the pouring zone.