Provided is a system and method for metering an amount of molten amorphous alloy into a mold cavity of an injection system. A melting chamber in the system is heated to or above a solidus temperature of the alloy to form a hot chamber. Both the chamber and mold are maintained in an inert atmosphere. The molten alloy is metered from the chamber using a valve system and injected into the mold cavity for molding into a part. A feed tube may extend from the hot chamber to the valve system. The valve system may use gravity or pressure from a pump to meter a volume of molten alloy. In another case, the valve system may include a plunger and a shot sleeve for injecting alloy into the mold. In one embodiment, the plunger itself meters a volume of the alloy. The shot sleeve and plunger may optionally be heated.

A feed device for a metal melt in an injection molding device of, for example, a metal-molding machine has a reservoir for the metal melt and a feed duct, in which the metal melt can be fed to a mold cavity. The feed duct includes a cylinder bore, in which a piston is arranged axially displaceably. A collection chamber for the metal melt, from which the metal melt can be introduced into the mold cavity through a continuing line as a consequence of an axial displacement of the piston, is provided in the cylinder bore. The cylinder bore is surrounded by a first heater, which has at least one heating element.

Provided is a die casting machine and die casting machine control method that are able to change the operation of a plunger at an appropriate timing. A die casting machine operates a plunger such that the plunger moves forward, detects that molten metal extruded from a sleeve by the forward movement of the plunger has arrived at a cavity, determines a deceleration starting position and a intensification starting position for changing the operation of the plunger, using, as a reference (reference position Ls), the position of the plunger 15 at the time when it is detected that molten metal has arrived at the cavity, and, when the plunger moves to the deceleration starting position and intensification starting position, changes the operation of the plunger to operations corresponding to the respective positions.

A piston of a die-casting apparatus comprises: a piston head fabricated of a first material; an elongate, inner carrier coupled to the piston head; a generally annular body seated on the carrier adjacent the piston head; and a wear ring disposed on the piston head, the wear ring being fabricated of a second material. The first material has a higher toughness and a lower hardness than the second material.

Apparatus and methods for injecting molten filler material into a hole. The method in accordance with one embodiment comprises: drilling a hole in a composite layer; heating filler material comprising an electrically conductive low-melting alloy to a molten state; inserting a nozzle having an internal channel system into the hole with a gap separating the nozzle and the hole; forcing molten filler material into, through and out of the internal channel system of the nozzle and into the gap; and retracting the nozzle from the hole. The nozzle may be rotary or not rotary.

A casting nozzle for guiding a melt from an outlet of a casting furnace into a casting box, the casting nozzle comprising a main body; a crown attached to the main body; a guiding channel through the main body and crown; a stub on the main body, which stub has a front side that is insertable into a casting furnace outlet and into which the guiding channel enters; a flange on the stub on a side opposite to the front side for applying onto the casting furnace; and a crown socket that is formed at the flange opposite to the stub for carrying the crown. The casting nozzle in combination with a casting furnace and a casting box.

An example molten material funnel includes a first outlet lip and a second outlet lip. The first and second outlet lips are configured to both contact molten material communicated through the molten material funnel.

A die casting machine of an embodiment includes: a holding furnace holding molten metal; a sleeve located outside the holding furnace and having a molten metal supply port passing through a mold; a plunger sliding through the sleeve and including a plunger rod and a plunger tip fixed to a tip of the plunger rod; a molten metal supply pipe pushed against the sleeve to cover the molten metal supply port and supplying the molten metal into the sleeve; and a pushing force variable mechanism reducing a pushing force for the sleeve in the molten metal supply pipe when the plunger is sliding.

A die casting machine of an embodiment includes: a holding furnace holding molten metal; a sleeve located outside the holding furnace and having a molten metal supply port passing through a mold; a plunger sliding through the sleeve and including a plunger rod and a plunger tip fixed to a tip of the plunger rod; a molten metal supply pipe supplying the molten metal into the sleeve and attachable to and detachable from the molten metal supply port; and a moving mechanism detaching the molten metal supply pipe from the molten metal supply port when the plunger is sliding.

A process for the casting of metals and their alloys includes the steps of providing at least a mold equipped with a plurality of cooling nozzles, making a layer of coolant permeable materials covering the nozzles and maintaining the materials at desired temperatures, delivering a molten metal into the mold, supplying predetermined amount of coolant to each nozzles to contact the casting at desired rate, time, and duration to achieve an acceptable level of progressive solidification from the distal end of the casting towards the riser until the casting has reached desired temperatures.