Abstract: This invention discloses a molten metal supply system that can supply molten metal to a downstream process at a constant pressure and molten metal flow rate. The molten metal supply system includes a molten metal supply source, a plurality of injectors, and a plurality of check valves.

Abstract: A method and apparatus for the casting of metal components is disclosed. The apparatus includes a gooseneck for drawing molten metal from a crucible of hot metal and for forcing the drawn molten metal through the system, a hot runner assembly having a hot runner tip positioned adjacent the mold cavity, and a machine nozzle inserted between the gooseneck and the hot runner assembly. The gooseneck is fitted with a one-way check valve to allow for molten metal to be drawn into the plunger but to stop its passage out of the gooseneck when the metal is forced through the system into the die. A thermal valve is formed within the hot runner tip to provide a metal blockage from the molten metal which prevents the back-flow of molten metal back into the hot runner assembly. Both temperature and flow rate are carefully monitored and controlled.

Abstract: An improved magnesium die casting system incorporates filling of the shot sleeve from the underside and/or in-line re-melting of scrap magnesium using a re-melt furnace. A pump is used to transfer molten magnesium from a casting furnace to the shot sleeve through an underflow filling tube. The shot sleeve is filled in a laminar manner, minimizing entrapped gases. The in-line re-melt system allows recycling of scrap in-house and reduces energy cost associated with heating and re-heating scrap. The improved system increases casting quality and reduces scrap rates and recycling costs.

Abstract: A reinforced casting assembly formed of ferrous metal for use with hot chamber die casting including a gooseneck, nozzle seat and nozzle. Reinforcing members are used to reinforce the casting. The preferred embodiment is reinforcing the gooseneck as this is where most failures created by the high internal pressure of hot melt die casting occur. The reinforcing members generally are made of steel wire such as a solid or braided wire.

Abstract: An injection molding machine having a simple structure and adapted to quickly operate for injection molding without taking in air bubbles is provided. The injection molding machine comprises a plunger and a nozzle for injecting the molten metal fed from the plunger into a metal mold. The plunger has a cylinder section with a through hole bored through an upper portion of its lateral wall for introducing the molten metal, and a piston for slidingly reciprocating within the cylinder section. A communication hole is bored through the piston and communicates with the through hole at a predetermined position. The communication hole runs from the lateral wall of the piston through the inside thereof and has a non-return valve arranged therein to allow only a flow from the lateral wall of the piston.

Abstract: A machine for producing metal die castings is disclosed and comprises a crucible that incorporates an injection pump assembly which is mounted in such a way as to clear the upper access of the crucible to facilitate cover sealing and removing. The crucible is located in a furnace and is reciprocable to move the injection barrel and nozzle to and from a mold. The injection barrel is immersed in the crucible beneath the level of the molten metal to enhance heat transfer between the barrel and injected metal. The separate plunger and shot assemblies are located in the pump body in a "V" configuration so that maintenance of these units can be carried out without exposing the top of the furnace to the atmosphere.

Abstract: An apparatus (10) for molding metallic articles such as wheel weights (11). Opposed mold sections (108, 109) are carried on support plates (41, 42) that are movable within a stanchion (40) by virtue of an actuating means (45). A feed mechanism (115) delivers mounting clips (18) to one of the mold sections (109), and an escapement means (135) assures that only one clip (18) is delivered at a time. The actuating mechanism (45) sequentially closes the mold sections (108, 109) to form a cavity (100) therebetween, moves the closed mold sections (108, 109) into engagement with an injection tube (79) which mates with a sprue hole (111). The injection tube (79) also presents a positioning lug (180) accurately to rotate the clip (18) to its desired disposition.