Disclosed are a brake disc manufactured from heterogeneous materials and a method of manufacturing the brake disc. In particular, the brake disc manufactured from heterogeneous materials, in which the number of bridges may be optimized to improve castability and relieve stress, thereby eliminating occurrence of a crack and the like which may be generated due to a difference in a thermal expansion coefficient between a friction part and a hat part.

A metal casting method and a plastic injection molding method in which an insert is molded in molten material such that no molten material enters the interior of the insert. At the usage of a wire thread insert as insert this has the advantage that for example in an aluminum cast part thread holes can be produced already as part of the casting process. For this purpose, the present disclosure describes an the casting mold, the insert as well as the casting method.

A method of manufacturing a vehicle chassis part capable of increasing bonding strength between a cast material and an extruded material forming the chassis part is proposed. The method includes: forming a pattern portion for bonding to a cast material on an outer surface of an extruded material; inserting and fixing the extruded material into which the pattern portion is formed, in a mold for molding the cast material; and injecting molten metal for molding the cast material into the mold to form the cast material. A portion of the cast material overlaps the pattern portion of the extruded material to be formed integrally therewith.

A method of repairing defect in cast iron workpiece, including: machining the workpiece in the area of the defect to remove the defective material and form a chamber opening at a surface of the workpiece; anchoring a receptacle to the workpiece above the chamber (2), the receptacle is provided with an orifice in communication with the chamber; adding molten iron (4) into the receptacle so that it at least part of it flows into the chamber; adding slagging agent (5) into the receptacle; heating the slagging agent and the molten iron with an electrode (6); adding nodulizing agent into the molten iron so as to segregate graphite; and allowing the molten iron and the workpiece to cool down slowly. The above-described technique also has applicability for connecting two cast iron workpieces (11,12) together.

The application discloses a preparation method for an aluminum alloy cavity casting filled with special-shaped foamed aluminum. The preparation method includes: preparing special-shaped foamed aluminum in a first mold by adopting a powder metallurgy foaming method; fixing the special-shaped foamed aluminum coated with the soldering flux in a second mold after the special-shaped foamed aluminum is coated with soldering flux; and casting by using molten aluminum alloy. According to the preparation method for the aluminum alloy cavity casting filled with the special-shaped foamed aluminum, the overall strength of the casting can be improved while the wall thickness of the casting is reduced to meet the requirement that the overall quality of the casting is not increased.

A method for producing a metal matrix composite by compounding a matrix material and a reinforcing material. The metal matrix composite has a near-net shape with high dimensional accuracy and a high reinforcing material volume ratio (Vf %). The matrix material is a pure metal or an alloy, and the reinforcing material includes ceramic particles, graphite particles, and/or metal particles, and the reinforcing material is different from the matrix material. The method includes molding a reinforcing material-molded or filled body having a near-net shape and pores, in a metal mold having a cavity corresponding to the near-net shape, pre-heating the mold including the reinforcing material-molded or filled body, placing the mold in an outer shell metal mold, casting a molten matrix material into the pores of the reinforcing material-molded or filled body, thereby obtaining the metal matrix composite. The method uses the same mold throughout the entire process.

The present invention is related to hierarchical composite wear component comprising a reinforced part, said reinforced part comprising a reinforcement of a triply periodic minimal surface ceramic lattice structure, said structure comprising multiple cell units, said cell units comprising voids and micro-porous ceramic cell walls, the micro-pores of the cell walls comprising a sinter metal or a cast metal, the ceramic lattice structure being embedded in a bi-continuous structure with a cast metal matrix.

A method of producing hybrid castings, combined, movably joined from metal alloys in sand or permanent casting molds, where the method for manufacture of hybrid castings, especially with movable connections, in sand moulds or permanent moulds, comprises preparing metal components if the form of cast-in pieces, insert (5) for setting in the cope or drag (1,2), pre-heating to a given temperature depending on the material to increase the adhesion of the cast-in piece, insert (5) surface in the process of casting a hybrid casting (4), resulting in a final product comprising connected, movable hybrid components as an assembly for direct use.

A method of forming a metal matrix composite component includes positioning a preform including an electrically non-conductive fibrous material in a shaping tool. The fibrous material is pre-coated. The method includes flowing a molten metal comprising zinc into the shaping tool so that at least a portion of the preform is enveloped by the molten metal to form the metal matrix composite component; and cooling the metal matrix composite component.

A process of forming an erosion, oxidation, and wear resistant shot chamber, either a gooseneck or a shot sleeve, is provided. The process utilizes a casting process for forming a one-piece shot chamber having a liner metallurgically bonded to the bulk portion of the shot chamber. Channels of predetermined shape and layout are built on the tubular external surface of the liner for facilitating thermal management of the shot chamber during die casting operations.