Provided are a die casting method and a die casting apparatus for preventing molten metal from being unexpectedly supplied into a sleeve under decompression. Molten metal supply control for pumping up molten metal with an electromagnetic pump and supplying the molten metal into a sleeve in a state of decompressing a cavity of a die and the inside of the sleeve attached to the die, including: moving the surface of the molten metal, with the electromagnetic pump, from a standard position to the side opposite to a supply direction of the molten metal; decompressing the cavity and the inside of the sleeve; and weakening force of the electromagnetic pump, which pumps down the molten metal to the side opposite to the supply direction to supply the molten metal into the sleeve.

A device and method for transferring filtered molten metal to a die casting mold. The device and method include a casting filtration system that includes a funnel and a continuously replaceable filter placed fluidly between a molten metal source and a casting mold. Both the funnel and filter are automatically moved into cooperation with a molten metal receptacle such as a shot sleeve prior to each casting operation, and then automatically moved out of the way so that pressurization of the filtered molten metal may take place in the receptacle. In addition, the filter may be formed on a continuous strand such that indexed movement of the strand will advance the used portion of the filter out of the way to make room for a new unused filter portion that will be ready for a subsequent repeated casting operation.

A device and method for transferring filtered molten metal to a die casting mold. The device and method include a casting filtration system that includes a funnel and a continuously replaceable filter placed fluidly between a molten metal source and a casting mold. Both the funnel and filter are automatically moved into cooperation with a molten metal receptacle such as a shot sleeve prior to each casting operation, and then automatically moved out of the way so that pressurization of the filtered molten metal may take place in the receptacle. In addition, the filter may be formed on a continuous strand such that indexed movement of the strand will advance the used portion of the filter out of the way to make room for a new unused filter portion that will be ready for a subsequent repeated casting operation.

A molten metal feed pipe for feeding a molten metal of an nonferrous alloy includes an outer tube made of a ferrous material, an inner tube made of a molten metal resistant material, and an intermediate member made of a compact of a fibrous non-organic material, which is disposed between the outer tube and the inner tube. The intermediate member, positioned in the central region of the molten metal feed pipe with respect to the longitudinal axial direction of the molten metal feed pipe, is disposed between the outer tube and the inner tube with the intermediate member being compressed in a radial direction of the molten metal feed pipe.

A molten metal feed pipe for feeding a molten metal of an nonferrous alloy includes an outer tube made of a ferrous material, an inner tube made of a molten metal resistant material, and an intermediate member made of a compact of a fibrous non-organic material, which is disposed between the outer tube and the inner tube. The intermediate member, positioned in the central region of the molten metal feed pipe with respect to the longitudinal axial direction of the molten metal feed pipe, is disposed between the outer tube and the inner tube with the intermediate member being compressed in a radial direction of the molten metal feed pipe.

An improved shot sleeve for high pressure die casting of low-iron aluminum silicon alloys and a method of making the shot sleeve, the shot sleeve includes a top portion including a pouring hole and a bottom portion including an impingement site on an inner surface of the bottom portion opposite the pouring hole. The impingement site is constructed of an erosion resistant material. The erosion resistant material is selected from: titanium, tungsten, molybdenum, ruthenium, tantalum, niobium, chromium, vanadium, zirconium, hafnium, boron or a secondary, tertiary or quaternary alloy formed from combination thereof. An erosion resistant insert located at an impingement site of a shot sleeve may accomplish the construction. The insert may be introduced into an internal surface of a conventional shot sleeve or replace a bottom portion of a conventional shot sleeve.

An improved shot sleeve for high pressure die casting of low-iron aluminum silicon alloys and a method of making the shot sleeve, the shot sleeve includes a top portion including a pouring hole and a bottom portion including an impingement site on an inner surface of the bottom portion opposite the pouring hole. The impingement site is constructed of an erosion resistant material. The erosion resistant material is selected from: titanium, tungsten, molybdenum, ruthenium, tantalum, niobium, chromium, vanadium, zirconium, hafnium, boron or a secondary, tertiary or quaternary alloy formed from combination thereof. An erosion resistant insert located at an impingement site of a shot sleeve may accomplish the construction. The insert may be introduced into an internal surface of a conventional shot sleeve or replace a bottom portion of a conventional shot sleeve.

The present invention relates to a die casting apparatus and, more specifically, to a die casting apparatus in which a movable electromagnetically controlled structure control module, which can be withdrawn to the outside, is provided adjacent to a sleeve. The present invention provides a die casting apparatus (100) comprising: a movable die (110) provided with a forming space (S); and a lower fixed die (120) which corresponds to the movable die and accommodates molten metal, and includes a sleeve (150) into which the molten metal is injected, wherein the molten metal is cast into a formed object by bringing the movable die and the lower fixed die into contact with each other. The die casting apparatus is provided with a movable electromagnetically controlled structure control module (200) including at least one electromagnetic stirring device-accommodating part (123) that accommodates an electromagnetic stirring device therein and is configured to pass through the lower fixed die to the vicinity of the sleeve in order to electromagnetically stir the molten metal injected through the sleeve.

The present invention relates to a die casting apparatus and, more specifically, to a die casting apparatus in which a movable electromagnetically controlled structure control module, which can be withdrawn to the outside, is provided adjacent to a sleeve. The present invention provides a die casting apparatus (100) comprising: a movable die (110) provided with a forming space (S); and a lower fixed die (120) which corresponds to the movable die and accommodates molten metal, and includes a sleeve (150) into which the molten metal is injected, wherein the molten metal is cast into a formed object by bringing the movable die and the lower fixed die into contact with each other. The die casting apparatus is provided with a movable electromagnetically controlled structure control module (200) including at least one electromagnetic stirring device-accommodating part (123) that accommodates an electromagnetic stirring device therein and is configured to pass through the lower fixed die to the vicinity of the sleeve in order to electromagnetically stir the molten metal injected through the sleeve.

A casting unit for a die casting machine has a casting container with a casting chamber, a casting piston, which is arranged in an axially movable manner in the casting chamber, a melt bath connection opening, a melt inlet channel from the melt bath connection opening to the casting chamber, a melt outlet channel, which leads out of the casting chamber separately from the melt inlet channel, and a shut-off control valve for the melt inlet channel. The shut-off control valve has a valve main body arranged on the casting container, a valve seat and a valve closing body. The valve main body is held on the casting container at a lateral valve assembly region of the casting container in a manner accessible from the outside and includes the melt bath connection opening, and/or the casting piston is of a spool type, and the shut-off control valve is located with its valve closing body in the melt inlet channel at a flow-technical distance from the melt bath connection opening on the one hand and from the casting chamber on the other hand.