Apparatus, systems, and methods that ultrasonically agitate a semisolid metal slurry to prevent dendrite formation that can lead to clogging of a nozzle during direct metal writing.

Apparatus, systems, and methods that ultrasonically agitate a semisolid metal slurry to prevent dendrite formation that can lead to clogging of a nozzle during direct metal writing.

An up-drawing continuous casting apparatus according to one aspect of the present invention is an up-drawing continuous casting apparatus including a molten metal holding furnace (101) configured to hold molten metal (M1) therein, and a shape determining member (102) placed on a molten metal surface of the molten metal (M1) and configured to determine a sectional shape of a casting (M3) to be casted when retained molten metal (M2) led out from the molten metal surface passes through the shape determining member (102). The shape determining member (102) includes inner shape determining plates (1041, 1042) connectable to each other, and an inner shape determining plate (1043) serving as a connecting member configured to connect the inner shape determining plates (1041, 1042) to each other.

An up-drawing continuous casting apparatus according to one aspect of the present invention is an up-drawing continuous casting apparatus including a molten metal holding furnace (101) configured to hold molten metal (M1) therein, and a shape determining member (102) placed on a molten metal surface of the molten metal (M1) and configured to determine a sectional shape of a casting (M3) to be casted when retained molten metal (M2) led out from the molten metal surface passes through the shape determining member (102). The shape determining member (102) includes inner shape determining plates (1041, 1042) connectable to each other, and an inner shape determining plate (1043) serving as a connecting member configured to connect the inner shape determining plates (1041, 1042) to each other.

An acoustic attenuation device extends from a first end to a second end and includes first and second sheets. A plurality of webs positioned between the first and second sheets cooperates with the first and second sheets to form a series of sound attenuation chambers containing a volume and mass of fluid. A first panel secured to the sheets closes the chambers at the first end of the device. A second panel secured to the sheets closes the chambers at the second end of the device. The device further includes first and second openings associated with each chamber and through which excited fluid resonates. The first and second openings extend through the first sheet into each chamber. The first openings have an invariable cross-section. At least one of the second openings has an adjustable cross-section for varying a resonant frequency of the chamber.

A rapid solidification apparatus is provided. The rapid solidification apparatus includes a movable chill body defining a quench surface, a molten material nozzle for directing one or more streams of molten material towards the quench surface and a source of inert gas. The source of inert gas is configured to provide a conical shield of pressurized inert gas around the one or more streams of molten material. The conical shield extends from the molten material nozzle towards the quench surface with focal point of the conical shield at or proximate the quench surface.

A rapid solidification apparatus is provided. The rapid solidification apparatus includes a movable chill body defining a quench surface, a molten material nozzle for directing one or more streams of molten material towards the quench surface and a source of inert gas. The source of inert gas is configured to provide a conical shield of pressurized inert gas around the one or more streams of molten material. The conical shield extends from the molten material nozzle towards the quench surface with focal point of the conical shield at or proximate the quench surface.

To provide a molding-material supplying mechanism and a molding apparatus capable of improving a volume occupancy ratio of a molding material.

A cassette 61 (a molding-material supplying mechanism) includes a tape-like molding material 10 having a rectangular shape in section and a bobbin 616 (a winding core) on which the molding material 10 is wound. In sectional view orthogonal to a rotation axis of the bobbin 616 (the winding core), the molding material 10 is wound on the bobbin 616 (the winding core) in a concentric shape centering on the rotation axis.

To provide a molding-material supplying mechanism and a molding apparatus capable of improving a volume occupancy ratio of a molding material.

A cassette 61 (a molding-material supplying mechanism) includes a tape-like molding material 10 having a rectangular shape in section and a bobbin 616 (a winding core) on which the molding material 10 is wound. In sectional view orthogonal to a rotation axis of the bobbin 616 (the winding core), the molding material 10 is wound on the bobbin 616 (the winding core) in a concentric shape centering on the rotation axis.

A system of 3D printing using a high temperature 3D print head that functions as a modified ink jet printer. The print head has the ability to print high temperature material such as metal, silicon carbide, and other high temperature material as opposed to inks or plastics. The print head is fabricated from a high temperature material to maintain structural integrity while operation at temperatures above the melting temperature for the material that is being printed.