A process for permanent mold 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 external surface of 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.

The invention relates to a diecasting method and a diecasting nozzle system (10) for use in a hot-chamber system (1) for the diecasting of metal melt (4), comprising a hot-chamber diecasting machine (2) with a casting vessel (3) and a melt distributor (20), which distributes the melt (4) from a machine nozzle (7) among uniformly heated diecasting nozzles (40). Arranged between a sprue region (42) of the diecasting nozzles (40) and the casting vessel (3) is at least one nonreturn valve (48), which prevents the melt (4) from flowing back from the sprue region (42) in the direction of the casting vessel (3). According to the invention, the nonreturn valve (48) is respectively arranged between the sprue region (42) of at least the upper diecasting nozzles (40) and a final branch of melt runners (22) in the melt distributor (20) to each of the diecasting nozzles (40).

Various embodiments provide apparatus and methods for melting materials and for containing the molten materials within melt zone during melting. Exemplary apparatus may include a vessel configured to receive a material for melting therein; a load induction coil positioned adjacent to the vessel to melt the material therein; and a containment induction coil positioned in line with the load induction coil. The material in the vessel can be heated by operating the load induction coil at a first RF frequency to form a molten material. The containment induction coil can be operated at a second RF frequency to contain the molten material within the load induction coil. Once the desired temperature is achieved and maintained for the molten material, operation of the containment induction coil can be stopped and the molten material can be ejected from the vessel into a mold through an ejection path.

A die casting plunger tip includes a hollow outer portion and a hollow inner portion. The outer portion has a first closed end. The inner portion has a second partially closed end. The inner portion is disposed within the outer portion and the second partially closed end is adjacent the first closed end of the outer portion in an axial direction. A plurality of connectors connects the outer portion and the inner portion. A plenum is formed between the outer portion and the inner portion.

Disclosed is an injection tip for injecting liquid metal under pressure, suitable for being inserted between a liquid metal supply conduit and an injection opening of a mould, the injection tip having a tubular in shape, made from electrically insulating refractory material and in that it includes a channel suitable for the flow of liquid metal between a first end referred to as the upstream end, suitable for being connected to the conduit, and a second end, referred to as the downstream end, suitable for being connected to the mould, and an electromagnetic coil, positioned between the ends, the axis of which merges with at least a portion of the axis of the channel. Also disclosed is a casting machine using such a tip and a method for casting metal using the machine.

A die casting plunger tip assembly includes a first portion having a closed end defining an outer face and a tip cover disposed on the outer face of the closed end. The tip cover includes a support structure extending from an inner surface of the tip cover toward the closed end. The support structure is positioned in contact with the outer face of the closed end and a cavity is formed between the outer face of the closed end and the tip cover.

A method for manufacturing a bushing of a self-lubricating plunger includes: S1. uniformly mixing a base metal powder with a reinforcing metal powder to obtain a mixture, putting the mixture into a mold for pressing by a hydraulic press machine to form a blank, then sintering the blank to form a tubular metal foundation having a plurality of micropores; S2. melting a metal matrix lubricant by heating up, wherein the metal matrix lubricant includes a metal substance of low melting point and a basic lubricating powder dispersed in the metal substance, and the metal substance has a melting point higher than a storage temperature of the bushing and lower than a working temperature of the plunger; and S3. immersing the tubular metal foundation in the molten metal matrix lubricant to fill the micropores of the tubular metal foundation with the metal matrix lubricant, then cooling down the temperature.

A die-casting piston having a receiving unit attachable to a piston rod, which includes a cooling device and a connecting device for the piston rod. A hollow cylindrical carrier body of a cup-shaped design has a melt-side end face, on whose lateral surface at least one hollow cylindrical sliding body is mountable. An end ring is disposed between the end face of the carrier body and an end face of the sliding body, which is used as a front-end first holding element for the at least one hollow cylindrical sliding body. The carrier body is axially mountable on the receiving unit, extending over the cooling device, and may be locked to the receiving unit and released again with the aid of a connecting device, the connecting device being disposed axially downstream from the sliding body on the side facing away from the end face of the carrier body, and the connecting device being a bayonet joint.

Proposed are an apparatus for molding a material, and a method for molding a material by using the apparatus. The apparatus includes first and second fixed platens (110 and 120) provided as a pair and spaced a predetermined distance from each other by tie bars (150), a movable platen (140) movable along the tie bars (150) between the first and second fixed platens (110 and 120), a mold (200) which is provided with a movable mold (220) and a fixed mold (240) and which forms a molding space (260) that is capable of being open or closed as the movable mold (220) moves in a direction toward or away from the fixed mold (240), and a pressing block (300) selectively positioned between the first fixed platen (110) and the movable mold (220) such that the pressing block is capable of applying a pressure to the movable mold (220).

The present invention is a casting machine for casting parts in a mold out of a metal using a metal feedstock. The machine feeds solid metal feedstock into a processing cylinder formed in a thermally conductive block and a heater elevates the temperature of the feedstock as it passes along the said processing cylinder first and second ends, the first end of the processing cylinder being configured to receive. The feedstock becomes more liquid and is transferred to an injector cylinder formed in the thermally conductive block adjacent the processing cylinder. The injector cylinder has a shooting pot coupled to the second end of the processing cylinder by a passage configured to permit feedstock to pass from the processing cylinder into the shooting pot from where is it injected into a mold.