Abstract: A method for cleaning a component comprises a first stage including the steps of: (i) loading a component into the cleaning chamber of a flush station, (ii) directing a deionized water stream through first filter means, (iii) introducing carbon dioxide into the filtered water stream, (iv) directing the carbonated water stream into a fluid passage to be cleaned in the component, and (v) collecting the dirty water stream after it passes through the component and directing the collected dirty water stream through second filter means for reuse. The method can further include a second stage including the steps of: (vi) loading the component into a testing chamber of a testing station, (vii) directing a deionized water stream through third filter means, (viii) directing the filtered water stream into the fluid passage in the component, and (ix) collecting the water stream after it passes through the component and directing the collected water stream into a particle counter.

Abstract: Disclosed is a foundry mix containing an organic salt and its use to make foundry shapes by the warm-box, hot-box, no-bake, and cold-box process, the use of these foundry shapes to make metal castings, and the metal castings prepared by the process.

Abstract: The invention relates to a chassis component for an automobile and a method for producing such chassis component. A mineral core body made of silicate is cast inside a light metal casting, and the blank produced in this manner is processed by forging, forming they chassis component 1. The density and strength of the base body of the light metal casting forming the chassis component as well as of the core body can be adjusted during the forging process.

Abstract: A flask for containing mold sand within it prevents any mold shifting or mold dropping. Each of an upper flask 2 and a lower flask 3 includes a body that defines an opening in which a sand mold is to be molded. The body has at least one inlet 101 for introducing the mold sand into the opening. Two flanges 102 are extended from the body such that they are opposed to each other across the opening. Each flange has a through bore. The flask also includes engaging members for engaging an actuator in the outside of the flask such that a force or forces from said actuator could be transmitted to the flask. An upper flask 104 and a lower flask 105 are opposed to each other across a pattern plate 107. They are integrally assembled to make a flask unit by means of a pair of connecting rods 106 that are fitted in each bore.

Abstract: Disclosed is a sand casting molding machine for double indexing molds in a mold string. The machine can include a shot chamber having sand, a swingable squeeze head, a lateral squeeze head, a core setter, a mold hold down, a mold retention device and a mold string conveyor.

Abstract: The present invention relates to a method of producing mold parts (5) on a string molding apparatus comprising a molding chamber (1) between a squeeze plate (2) and a pivoted squeeze plate (3) in which both the squeeze plate (2) and the pivoted squeeze plate (3) can move in a direction towards each other and a direction away from one another comprising the steps of introducing a compressible particulate molding material (4) in the molding chamber (1) and then squeezing the molding material (4) by moving the squeeze plate (2) and the pivoted squeeze (3) towards one another wherein the velocity of the squeeze plate and the velocity of the pivoted squeeze plate are controlled independent from one another during the squeezing of the mold part (5).

Abstract: Mounted on plate (9), associated to the machine's compacting and ejection piston is pattern plate (10), which incorporates stops (11) restored by springs (12), with an ejection plate (13) placed between said pattern plate (10) and plate (9), aided by guiding elements (14) and complemented by hold down plates (15) which correspond to the holes of the pattern plate. Inside compacting rammer (6) are mounted four ejectors (17) embodied as hydraulic cylinders which, by means of hold down plates (15) attached to ejection plate (13) compact the sand in the holes to then eject the mote. Therefore, the ejection plate has a compacting stroke (Y) prior to the ejection stroke (Z). The machine is thus particularly well suited for efficient moulding of motes having round or otherwise shaped deep holes, without requiring the use of cores.

Abstract: A space defined by inside surfaces of a main molding flask and lower auxiliary flask and the upper surface of a pattern plate where the upper surface of the pattern plate is retained at a predetermined level along the inside surfaces of the main molding flask and lower auxiliary flask is filled with an amount of molding sand. The molding sand is then squeezed in the space with upper and lower press heads in at least one of upward and downward directions to form at least one of first and second halves of a sand mold such that a lower surface of the first or second half of the sand mold is formed at a desired level along the inside surfaces of the main molding flask and lower auxiliary flask irrespective of edges of the main molding and lower auxiliary flasks. The desired level is determined by the level of the upper surface of the pattern plate at the time when the squeezing step has finished.

Abstract: A method and apparatus of forming a plurality of moulds in a string system is provided by squeeze plates which compress the particulate mould material. One of the squeeze plates is pivotable so that when a pair of squeeze plates are compressed by particulate mould material, the pivotable squeeze plate may be pivoted out of the way to provide a string mould system. In another embodiment of the invention the pivotable squeeze plate is movable laterally to provide bilateral pressing of both of the squeeze plates.

Abstract: In a molding system a box has a pair of oppositely open ends has inner side faces and respective mold plates are engageable in the open ends to close same and have faces defining with the inner side faces a mold cavity. Sand is introduced into the cavity between the faces and is compressed in the cavity to form a mold part. An aerosol mist under superatmospheric pressure and comprised of air and finely divided droplets of a coating liquid is sprayed into the mold cavity when same is closed by the mold plates but before the sand is introduced into the cavity so that the droplets settle on the faces and coat same with the liquid.

Abstract: A method of manufacturing a core and a mold for manufacturing a core or a mold using self-hardening molding sand or gas-hardening molding sand, wherein the self-hardening molding sand or the gas-hardening molding sand is charged in a core pattern or a flask while applying three-dimensional jolt, and a method of manufacturing a core and a mold for manufacturing a core or a mold using self-hardening molding sand, wherein air flow is precipitated by sucking the self-hardening molding sand in a core pattern or a flask.

Abstract: In producing casting molds or mold parts by compacting mold sand in a molding chamber between two pattern plates, the volume of the molding chamber is measured and/or computed, such as by using sensors and a timer/controller capable of computing, before and after the compacting step. The values obtained are used to calculate a compaction ratio which is compared with a desired compaction ratio as a basis for making adjustments to the starting conditions, before the next mold or mold part is produced. In this manner it is possible to achieve a continuous correction of the compacting ratio to form correctly sized molds or mold parts in a series.

Abstract: A lining plate for the molding space of a molding machine is provided with functional openings such as sand supply openings and air-exhaust openings traversing the lining plate, the latter openings optionally provided with nozzle inserts. The lining plate is subdivided into two plate layers detachably fastened to each other, namely into a wear plate bordering the molding space and a carrier plate supporting the back of the wear plate. The mutually facing larger surface areas of the wear--and carrier plate are kept fully adherent to each other by magnet clamps and are additionally insured, in a detachably form-locking manner, against relative displacement with respect to each other. The lining plate allows a problem-free and comparatively cost-efficient restoration afer wear.

Abstract: In a method of operating an apparatus with a mold chamber (8) being supplied with fluidized mold sand (2) from a supply chamber (1) under air pressure applied through suitable air channels (3), and in which the pressure in the supply chamber (1) is increased gradually from a low to a high value to avoid turbulences in the initial filling stage and ensuing weak spots in the molded article, while at the same time achieving a short total filling time and a high degree of compaction during the final stage, the new feature is that vacuum is applied through air-permeable mold chamber walls (9,10), preferably before increasing the pressure in the supply chamber (1), thus avoiding the formation of air pockets in depressions in the mold chamber walls, that could otherwise cause reduced compactness and density in protruding parts of the shaped body (not shown) being formed in the mold chamber (8).

Abstract: A method of producing a mold core from green sand, wherein green sand is blown into a mold cavity which is sized to be greater than the size of the mold core to be obtained, so that a preformed mold body is prepared. The preformed mold body is then compacted by a compacting die having a cavity recess which is sized in conformity with the size of the mold core to be obtained, until the preformed mold body size is reduced to the final stage. In consequence, the green sand is compacted to develop uniform distributions of strength and hardness over the entire portion of the mold core as the product.

Abstract: A method and an apparatus for replacing pattern plates in a moulding plant for making boxless mould parts of sand or other like material is characterized by the use of a revolving table (1), which is provided with e.g. four symmetrically placed arms (1), in which are suspended pattern plates (2,3). The revolving table is designed for sequential conveying of the pattern plates (2,3) for placing these on a squeeze plate (PP) and a counter-pressure plate (MTP), respectively, in the moulding chamber of a moulding plant (suggested only on the drawing). The pattern plates (2,3) are placed in the respective arms (1) when the latter are just opposite the changing position. From the changing position, the pattern plates (2,3) are conveyed into a moulding chamber by a transverse sliding movement in an essentially known manner.

Abstract: A foundry molding machine is provided with a pattern plate surrounded by and movable in a well form. In a preferred form springs bias the well form upwardly around the pattern plate to form a well. The pattern plate and well form are mounted on a squeeze table and cooperate with the underside of a conventional flask which in turn engages an upset to form a mold chamber for receiving molding sand. In such preferred form the sand is blown under very low pressure into the chamber through a slotted squeeze head. As the squeeze table moves upwardly, sand is initially squeezed from the top against the squeeze head while the flask, upset, well form and pattern plate move upwardly as a unit. When a selected level of the flask is reached, preferably when the top is flush with the squeeze head, upward movement of the upset is stopped while the table continues upwardly. The pattern plate then telescopes upwardly within the well form while the flask and well form are held fixed.

Abstract: Apertures are formed in the top surface of the platen assembly. A resilient diaphragm extends across each aperture and is extended upwardly through the aperture by a plunger. The extended diaphragm protrudes into sand within the flask and locks the sand mold against movement parallel to the top of the platen assembly.

Abstract: A mold forming tool for use in the manufacture of casting molds by compression of loose mold forming material by a process in which the final compacting is achieved by pressing, for the casting of cast pieces having undercuts, the tool having an elastically deformable portion in the region of the undercuts, and the elastically deformable portion being made of a material which is deformable, thus creating the undercut pattern, solely under the influence of the pressure exerted on the mold forming material during the final compacting.

Abstract: The improved process comprises placing in an open top, walled enclosure a pattern plate carrying the pattern for the core or mold part to be produced. The height of the pattern plate is adjustable relative to the tops of the walls of the enclosure so that when sand coated with a polymerizable resin is poured onto the top of the pattern the excess sand flows over the tops of the walls, covering the pattern with a mound of sand the slope of the walls of which is determined by the angle of least repose of the sand. A squeeze head having a surface corresponding to the surface of the pattern is now pressed downwardly onto the top of the pile of sand, to compact the sand about the pattern. While thus held by the squeeze head, material such as gas is passed from the bottom of the mold or core up through the now compacted sand, thus to polymerize the resin. The squeeze head is removed and the now cured, resin sand core or mold part is removed, ready for use in the usual way.

Abstract: Casting molds from binder-containing molding sand manufactured by improved vacuum injection, achieved by employing an injection grate with injection slots of a minimum width of at least 50 mm, a filterless connection between the mold container, the vacuum container and a vacuum container having a volume at least 20 times the volume of the mold container, evacuation of the vacuum container by a liquid seal pump and a venturi pipe effect in the sand chamber prior to injection of the sand.

Abstract: In the production of a foundry mold utilizing mold forming apparatus which includes a pattern device, a molding box arranged on the pattern device and a frame attached to the molding box, a surplus amount of molding sand is initially filled in over the pattern device in excess of the amount required for the production of the mold and during the production operation the excess sand is stripped off by profiled stripping means which are moved relative to the molding box to strip the excess sand along a profile which is dependent upon the configuration of the pattern device. In one aspect of the invention a single profiled stripper may be used and in another aspect a plurality of strippers having differring profiles may be employed. In other aspects of the invention different mechanisms are applied to move the stripping means relative to the molding sand by movement of the pattern device either along a linear path or through a circular path.

Abstract: An improvement in a process for making a mold for metal casting by applying a fluid ceramic composition containing binding agent and finely divided refractory substance to a pattern and hardening the same, which improvement comprises employing a ceramic composition which contains special solvents, anti-setting and thixotropic agents, so that this composition after applying gives a uniform coat which does not run down from walls.

Abstract: In a system for the production of molds for casting, a pair of pattern plates are disposed in an opposed facing relationship with a frame located therebetween in a manner whereby the opposing pattern surfaces of the plates, together with the frame, define an enclosed cavity within which a casting mold section may be formed. The frame is preferably provided with an opening through which the cavity may be filled with molding material which, after hardening, forms a mold section. After separation of the pattern plates and frame, the mold section is conveyed into assembled relationship with one or more other mold sections in order to form a mold for casting. Pattern plates and frames may be arranged in a mass production facility to continuously form mold sections which, when assembled, will provide a mold stack for producing multiple castings.

Abstract: In an automatic mold part producing apparatus having a mold chamber which is filled with mold forming material that subsequently is compressed between a pair of opposite end walls, the mold forming material is forced into said mold chamber by means of pressurized air, the pressure of which is gradually or stepwise increased during the chamber filling operation, for the purpose of achieving uniform compactness or density of the mold forming material throughout the height of the mold chamber.

Abstract: An improved method of producing a mould under a reduced pressure is described herein. In the improved method, after a main pattern (1) having a protrusion and a recess is inserted with an auxiliary pattern (8) having the same shape as said recess and having an air-tight film (9) tightly adhered on its outer peripheral surface into said recess, said main pattern (1) is fixedly placed on a surface plate (2) provided with evacuating means, and the surface of the main pattern (1) including the upper surface of said surface plate but excluding the upper surface of said auxiliary pattern (8) is covered with an air-tight film (3). Then, after said air-tight film (3) has been tightly adhered onto the surface of the main pattern (1) excluding the upper surface of said auxiliary pattern (8) and onto the upper surface of the surface plate (2) with the evacuating means of the surface plate (2), said auxiliay pattern (8) is extracted from the main pattern (1).

Abstract: Automatic molding apparatus to make flaskless molds from match plate patterns using sand and binder pre-mix and an activator or catalyst includes form boxes having open faces and double wall construction with a continuous chamber between the walls. The inner wall is vented to the chamber to provide a gas flow passage. The apparatus also includes manifolds which clamp over openings in the top and bottom walls for innoculation and pneumatic withdrawal of activating or catalytic-reacting gases such as hot air or carbon dioxide which are innoculated at an innoculation station into the mold box to decrease the hardening time of the sand. The open faces of the mold box are closed by hinge plates or cover plates each rotated by a rack and pinion. The plates are further secured during sand filling by spring-loaded arms bearing against tapered ribs on the hinge plates.