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.

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.

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.

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.

A serial multi-cavity high pressure casting apparatus includes a three stage mold comprising a fixed mold, an operation mold, and a medium mold disposed between the fixed mold and the operation mold, a main sleeve penetrating a lower portion of the fixed mold, and having molten metal injected thereinto, a main runner formed to extend upward from the main sleeve, an auxiliary sleeve branched to both directions from the main runner, an auxiliary runner formed to extend upward from each of both ends of the auxiliary sleeve and connected to each of a first cavity formed between the fixed mold and the medium mold, and a second cavity formed between the medium mold and the operation mold, and a sleeve core disposed on a lower portion of the medium mold, and having the main sleeve, the main runner, and the auxiliary sleeve inserted thereinto.

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 method for casting an aluminum alloy includes: pouring molten metal of an aluminum alloy comprising 6.0 to 9.0 mass % of Si, 0.4 to 0.8 mass % of Mg, 0.25 to 1.0 mass % of Cu, 0.08 to 0.25 mass % of Fe, 0.6 mass % or less of Mn, 0.2 mass % or less of Ti, and 0.01 mass % or less of Sr, with the balance being Al and unavoidable impurities into a shot sleeve of a die casting machine; filling a mold cavity of a center-gate die with the molten metal at a gate speed of 1 msec or less so as to produce a laminar flow, and subjecting T5 heat treatment so as to obtain the aluminum alloy having a tensile strength of 240 MPa or more.

A die casting sleeve, supported horizontally on a die casting device such that a cylinder portion front end communicates with a cavity and a plunger tip is inserted from a cylinder portion rear end, is configured such that the cylinder portion has a double structure in which an inner cylinder is fitted into an outer cylinder, the inner cylinder is made of a composite material of titanium or a titanium alloy and ceramic in at least a molten metal receiving region under an inlet port, a first planar portion is formed on the outer cylinder in the molten metal receiving region, and a cooling device including a tubular portion for letting a cooling medium flow in a jacket main body as a metal block having a second planar portion is mounted on the outer cylinder in a state where the second planar portion abuts against the first planar portion.

An injection chamber or container for machines for pressure die-casting processes is provided, which is formed by a cylinder (1) includes an external cuff (2) and an internal insert (3), through which passes material that is introduced through an opening (4) and pressure-driven by means of a piston (5) into a mould (6). The internal insert (3) has an outer diameter (d) smaller than the inner diameter (D) of the external cuff (2), there being between the two diameters (d, D), a difference of dimension (a) such that the insert (3) can be inserted into and removed from the cuff (2) directly and cold, that is, without dilating it, and such that he only dilation that the insert undergoes (3), which is caused by the heat of the material to be extruded that passes therethrough when the cylinder (1) is operating, causes the insert to become fixed inside the cuff (2).

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 self-healing erosive wear resistant coating on a liner of refractory metal to serve as the working surfaces of a shot chamber. Such a shot chamber is expected to have an improved service life for die casting of corrosive metals and alloys, including hot chamber die casting of aluminum alloys. An improved hot dipping process using stirring in the motel metal bath is also disclosed.