Abstract: Support device for an assembly (14) of the casting rolls (11, 11?) of a continuous metallic strip casting line comprising a movable support at each axial end. Such supports (17, 17?, 19, 19?) are provided with a hydraulic bearing (13) to reduce friction during motion with respect to the assembly. Between the movable supports of one of the rolls (11) and the assembly is located a hydraulic actuator (18), which thrusts the first roll (11?) towards the second roll (11?) against a stop (16). Between the second roll (11?) and the assembly there are located magnetostrictive actuators which thrust the second roll (11?) against the first roll (11). The device has a joint provided with a housing (22) inside which a telescopic tube (21) for the supply of the cooling water to conduits present in the rolls may slide. The housing (22) is connected to the assembly (14) by means of a bellows (27) allowing for oscillation.

Abstract: A copper casting mold for the continuous casting of steel melts is provided, in the presence of zinc and or sulfur in the thermally most greatly stressed contact region with the steel melt, with an at least single-layer diffusion barrier layer made of at least one metallic/metalloid material.

Abstract: The present invention provides coating systems that minimize thermal and residual stresses to create a fatigue- and soldering-resistant coating for aluminum die casting dies. The coating systems include at least three layers. The outer layer is an alumina- or boro-carbide-based outer layer that has superior non-wettability characteristics with molten aluminum coupled with oxidation and wear resistance. A functionally-graded intermediate layer or “interlayer” enhances the erosive wear, toughness, and corrosion resistance of the die. A thin adhesion layer of reactive metal is used between the die substrate and the interlayer to increase adhesion of the coating system to the die surface.

Abstract: The invention relates to a method for producing a brake disk (B) that comprises a supporting part (2) and a friction ring (R). The inventive method involves the following working steps: manufacturing, especially by casting, the supporting part (2) with at least one radially protruding projection (10) situated on the periphery of the supporting part; forming a cast core (14), which is made of core sand and which surrounds the projection (10) over a foot section (10a) that is assigned to the supporting part (2), onto the supporting part (2) while sealing a free end section (10b) of the projection (10) so that this end section (10b) is not made wet by the sand of the cast core (14); casting the friction ring (R) onto the supporting part (2), which is provided with the cast core (14), while casting around the free end section (10b) of the projection (10).

Abstract: A method and apparatus for continuous casting of metal strip, the apparatus having (i) a first endless belt supported and moved on the surfaces of a first entry pulley and a first exit pulley and (ii) a second endless belt supported and moved on the surfaces of a second entry pulley and a second exit pulley, with an entry nip defined between the first and second entry pulleys and an exit nip defined between the first and second exit pulleys. Opposing surfaces of the first and second belts progressively diverge from each other in the direction of movement thereof. The apparatus may include a cooled roll in place of the first pulley and first belt with a nip defined between the cooled roll and the second entry pulley.

Abstract: A method of making a casting having a cast portion and a cap nut includes forming a hole with a stepped shape in the cap nut to have a large-diameter hole on an opening side and a threaded small-diameter hole on a bottom side, inserting a fixing member into the large-diameter hole, supporting the fixing member in a sand mold, pouring a casting material into the sand mold so that the cap nut is enveloped in the cast portion and that a first surface of the cap nut adjacent to the hole is exposed outside without being covered with a second surface of the cast portion, and removing the fixing member from the cap nut after the casting is taken out of the sand mold.

Abstract: A continuous casting method is demonstrated, in which a slab including a liquid core 11 is bulged and then reduced in its thickness with a reduction roll pair 7, in which case, the uppermost surface of the lower roll 7b in the reduction roll pair 7 is located at a higher level than the lower pass line 9 of the slab. With this method, the slab can be efficiently reduced in its thickness without any loss of reduction force and the generation of segregation can be suppressed at the center area of the slab in the thickness direction. A continuous casting apparatus according to the invention is suitable for carrying out the continuous casting method according to the invention. A slab produced by the method according to the invention has good quality, since the segregation at the center area can be improved over the entire width in which the liquid core 11 is included.

Abstract: An apparatus for the continuous casting of metals, especially of steel, is equipped with a base frame (2) carrying a continuous casting mold (1) and an oscillating device (3) disposed on the base frame (2) and with a foot roller frame (4) disposed on the foot end (1a) of the continuous casting mold (1). In order to obtain better protection for the mold region and components disposed downstream thereof, it is proposed that the continuous casting mold (1) together with an oscillation frame (3b) and an oscillating drive (3a) engaging the oscillating frame (3b) be arranged in an upwardly and laterally closed housing (5) and that the foot roller frame (4) fastened on the continuous casting mold (1) extends through a laterally shielding lower housing (6).

Abstract: There is provided a method or process for fabricating a hollow jewelry article which is hollowed or bored out. In accordance with this process, a metal ring model is prepared comprising a solid shank and a metal plate supported along the internal perimeter of the shank by means of a series of spokes extending from the shank. A first metal mold is produced from the metal ring model having the external shape of the jewelry article to be manufactured. From this mold, a wax model of the jewelry article is produced which is first filed down and then cast in order to form a metal model of a core insert; the core insert, like the ring model, has a plate disposed along the perimeter of the shank. This core insert is used to produce a second metal mold. This second mold may then be used repeatedly in order to form a soluble wax core insert model which is then inserted into the cavity of the first mold in order to define the hollow region of the article.

Abstract: The invention relates to a method for producing a monocrystalline component, having a complex moulded structure with different structure parts, from a molten metal. According to the method, said molten metal is located in a negative mould, corresponding to the moulding structure and said negative mould moves with the formation of a solidification front on a temperature drop, which is adapted to the crystallization speed of the molten metal and which includes the melting point. Said method is characterized in that at least one of the structure parts of the moulded structure experiences an individual temperature drop. If the solidification front has to grow through a structure part, which is inappropriately oriented in relation to the solidification front, said structure part or zone can experience an individual temperature drop. This enables monocrystalline components, having a complex moulded structure, to be produced in a reliable and economic manner.

Abstract: A foamed structure of bulk solidifying amorphous alloy with improved impact resistance, with high stiffness to weight ratio, and/or with high resistance to fatigue and crack propagation, and a method for forming such foamed structures are provided.

Abstract: A process and apparatus for producing a metal strip using a two-roller casting device formed by two oppositely rotating casting rollers with parallel casting-roller axes and two side plates which bear against end sides of the casting rollers. The metal melt is conveyed out of the casting gap formed by the casting rollers as an at least partially solidified metal strip. To improve the sealing of the melt pool at the start of casting and in the event of parasitic solidifications passing through the casing gap, the side plates during a first time interval are moved onto the end sides of the casting rollers in a first direction of movement parallel to the casting-roller axes, and the side plates during a second time interval, are moved onto a portion of the lateral surfaces of the casting rollers in a second direction of movement parallel to the casting direction in the casting gap.

Abstract: Methods for casting an austenitic stainless steel thin strip casting through a continuous caster, e.g., a twin-drum type caster, in which the mold walls move synchronous with the casting to obtain a casting, wherein defects, e.g., salt-and-pepper unevenly glossy defects, on a steel sheet formed after cold rolling or cold forming are prevented. In particular, casting an austenitic stainless steel thin strip casting by regulating a pressing force P of mold wall faces against the casting in the range from more than 1.0 to less than 2.5 t/m, and preferably from more than 1.1 to not more than 1.6 t/m. The continuous caster used may be a twin-drum type continuous caster, with a drum radius R(m) and a pressing force P(t/m) of mold wall faces satisfying the relation 0.5?(?{square root over (R)})×P?2.0, and preferably 0.8?(?{square root over (R)})×P?1.2.

Abstract: The present application relates to a method of producing a metal article having an internal passage coated with a ceramic coating. The method comprises: preparing a core for defining the internal passage; applying the ceramic coating on the core; assembling the core with the ceramic coating applied thereon into a mold; casting metal into the mold at a pour temperature lower than the melting temperature of the ceramic coating; and removing the core. The ceramic coating may be applied by plasma spraying or slurry deposition.

Abstract: A device for casting a molten metal comprising casting rolls and a housing arranged downstream from the rolls for the cast strip. The aim of the invention is to be able to replace the casting rolls with minimum mounting, and to simultaneously reduce the thermal load of the casting rolls and the adjacent units. A casting roll screen which forms a displaceable structural unit with a frame used to support the casting rolls.

Abstract: The invention relates to a investment casting shell molds and their method of manufacture. The method entails mixing fiber and refractory filler to form a dry blend; mixing the dry blend with a binder sol to form a refractory slurry, and employing the refractory slurry to produce an investment casting shell mold.

Abstract: A method, and the related implementation device, for the regulation of strip temperature in a continuous metallic strip casting plant, wherein such temperature regulation begins on the strip whilst under the casting equipment and at a certain distance from it, and then continues along the roll path. The device provides that the rolls on which the strip is transported are fitted with a cooling system.

Abstract: A device for the continuous casting of metals, especially steel material, to elongated products in a multistrand casting apparatus with a plurality of continuous casting molds which are oscillatingly driven in an oscillating frame (2) by means of leaf springs (4) whereby the leaf springs (4) extend transversely to the casting direction (1) and serve for guide and weight compensation. The smallest possible strand spacing “A” is provided for that on a longitudinal foundation frame (5) to housings (6a) in the form of compact flat cassettes (6) are secured one behind the other in the strand travel direction. In the housings upper and lower leaf spring pairs (4a; 4b) run transversely to the cast strands (3) and the oscillating strands (11) engage the leaf spring pairs (4a; 4b), whereby a front oscillating drive (11a) works synchronously with the rear oscillating drive (11b).

Abstract: The present invention relates to a method of molding a low-melting-point metal alloy which exhibits thixotropy properties in a solid-phase and liquid-phase coexisting temperature region. In this method, a temperature of a heating holding cylinder is increased to a liquidus temperature or higher at the start of a molding operation. Then a remaining material in the preceding molding remaining in the heating holding cylinder in a solid state is wholly melted. After that a temperature of the heating holding cylinder is lowered to a temperature in the solid-phase and a liquid-phase coexisting temperature region. At the same time a molding material is supplied and a provisional molding is carried out. After the temperature has reached the solid-phase and liquid-phase coexisting temperature region, a regular molding is started. By the present invention a problem of a remaining material in the heating holding cylinder, which becomes a trouble at the start of molding by injection, is solved.

Abstract: A method of molding a low melting point metal alloy which exhibits thixotropy properties at a solid-liquid coexisting temperature, said method comprising the steps of heating said metal alloy at a temperature in the solid-liquid coexisting temperature region to form a semisolid, supplying said semisolid to a heating/holding cylinder to be accumulated, and injecting said semisolid into a mold. At the end of the molding process, a remaining semisolid material is heated to a wholly molten state, then discharged by injection, and heating is stopped so that the molding operation is finished; or, at a temporary suspension of molding, an accumulated material is heated to a wholly molten state and, at the resumption of molding, the temperature of the heating holding cylinder is lowered to the original solid-liquid coexisting temperature region while discharging said wholly molten material by injection and resupplying with new semisolid molding material.