Abstract: A fluid cooled shot sleeve assembly for transferring molten metals. The shot sleeve is of a three layer construction in which a copper intermediate layer is attached to the outside surface of an inner metal charging chamber. A high strength outer jacket is fitted onto the copper intermediate layer and serves to hold the inner metal charging chamber straight until excessive heat buildup in the charging chamber is dissipated by the copper layer. A heat transfer conduit of semi-circular design is located within the wall of the metal charging chamber and in contact with the intermediate copper insert. This conduit permits a heat transfer fluid such as water to cool both the inner steel charging chamber which is in contact with the molten metal and lower the temperature of the copper layer to increase its ability to transfer heat from the metal charging chamber.

Abstract: A three-layer shot sleeve assembly for transferring molten metals to a die and method of making same. A copper layer is welded onto a steel inner barrel leaving a region at each end of the inner sleeve upcoppered. A high yield strength outer shell is shrink fitted onto the coppered inner barrel. The two steel layers are welded together at the two ends. The steel outer shell is more massive and stronger than the inner barrel and serves to hold the inner barrel straight until excessive heat build up in the region opposite the well area is dissipated by the copper layer and transferred to the outer shell.

Abstract: An improved shot tip for a metal injecting shot sleeve wherein the rear end of the shot tip is of a reduced diameter as compared to the front end of the shot tip so as to minimize drag as the shot tip moves through the shot sleeve, and a wear resistant ring is positioned in an external groove in the enlarged diameter front end portion of the shot tip to minimize wear and preclude blowby of molten metal at the reduced length interface between the shot tip and the shot sleeve.

Abstract: A torch tip for use with a die casting torch in which the tip functions to blow out the flame when the ratio of air pressure to gas pressure being supplied to the tip exceeds a predetermined safe value. The torch tip comprises a unitary die casting and includes a generally cylindrical main body portion, a partition extending transversely between the ends of the main body portion, a reduced diameter mouth at the discharge end of the main body portion having a diameter that is less than the internal diameter of the main body portion at the partition, and a plurality of holes in the partition including at least some holes spaced radially outwardly of the circumferential boundary of the reduced diameter mouth.

Abstract: An improved shot tip for a metal injecting shot sleeve wherein the tip comprises a beryllium-copper alloy head having a domed front face and an interior cooling chamber. A baffle is located on the end of a coolant exhaust tube inside of the coolant chamber. Coolant water enters the shot tip head by flowing around the outside of the tube and exits the shot tip head through the tube itself, the aluminum baffle and a flow directing deflector.

Abstract: A nozzle for molten metal casting operations wherein is provided with an annular groove either in an exterior surface or, in the case of a nozzle having a hard metal insert, in an interior surface. In either case, the groove is filled with a material having a high heat conductivity and which is either in a location where it can receive heat directly from a localized source such as gas fired torch or in thermal circuit with such a location; i.e. connected to the location by some intermediate leg of high thermal conductivity material. In one specific embodiment the groove is filled with copper and is connected to a series of spiral extension grooves. In another embodiment is formed in an interior surface where it is adjacent a hard metal insert which increases the durability of the nozzle in repetitive make and break operations.

Abstract: An improved shot sleeve for molding molten metals has a surface pattern of copper for passively distributing heat from a well opening in the sleeve side wall. Molten metal is poured into the well and is discharged along the internal sleeve bore and longitudinally out from the sleeve into a die means by a water-cooled piston. The improvement involves a surface pattern of copper to produce lower operating temperatures by conducting and radiating heat away from the well. The benefits are longer plunger life and longer sleeve life.