Disclosure provides a two-segment electromagnet stirring member, and a two-segment electromagnet semi-solid die-casting apparatus including the same, and a die-casting method using the same. The two-segment electromagnet stirring member includes a plurality of magnetic field generation parts therein, and includes a first electromagnetic stirring part and a second electromagnetic stirring part separated from each other. The first electromagnetic stirring part and the second electromagnetic stirring part are coupled to each other in a ring shape to surround an outer circumferential surface of a sleeve to perform electromagnetic stirring to molten metal in the sleeve, and are coupled to each other so as to position the plurality of magnetic field generation parts at radially equal gaps around the sleeve.

A die casting machine includes a clamping device which opens and closes and clamps a pair of die halves, an injection apparatus which performs injection to the pair of die halves by making a plunger move forward in a sleeve communicated with a space between the pair of die halves, and a control device which controls the clamping device and injection apparatus. The control device includes an injection control part and press-use clamping control part. The injection control part controls the injection apparatus so as to start the injection in a state where the pair of die halves face each other through a gap. The press-use clamping control part controls the clamping device so that the die contact and clamping are carried out after the start of injection. Further, the injection control part performs control for decelerating the plunger before the plunger stops.

A die casting insert for producing die casted metal parts from liquid metal. The die casting insert has an outer casing shaped to be fixed in the die block of the die casting apparatus. The die casting insert also has a stopper with a purge opening that is adapted to evacuate contaminants topping the liquid metal as pressure is applied to the liquid metal. The stopper, fitted to mate with the hollow inner cavity of the injection sleeve, is constructed to seal the hollow inner cavity of the injection sleeve except at the purge opening when in a first position; and to permit the flow of the liquid metal into at least one molding cavity when the stopper is in a second position. The die casting insert also has an activation mechanism configured to shift the stopper between the first position and the second position.

A casting plunger system for a die casting machine includes a stationary system part and a system part which moves relative to the stationary system part in a respective casting cycle for the introduction of melt material into a casting mould. The moved system part has a plunger, a plunger rod and a rod drive unit, and is configured to decelerate at the end of a mould filling phase of the casting cycle under the effect of pressure on the melt material. A casting method for a die casting machine is provided with such a plunger system. The moved system part has a mass which can be adjusted variably between different casting cycles, and/or the moved system part consists of a moved main system part and an additional mass unit which is arranged so as to be movable relative to the main system part and is configured to decelerate, at the end of the mould fill phase of the casting cycle, later by a predefined delay time than the main system part.

In an injection cylinder which can be connected with a plunger, the internal portion of the cylinder part is partitioned by a piston into a rod-side chamber on the side of the piston rod and a head-side chamber on the opposite side. An accumulator can supply a hydraulic fluid to the head-side chamber. A head-use pressure sensor can detect a pressure of the head-side chamber. A flow control valve can control a flow rate of the hydraulic fluid discharged from the rod-side chamber. A control device includes an OP control part which starts open control driving the flow control valve to the opening direction after the start of supply of the hydraulic fluid from the accumulator to the head-side chamber conditional on the detection pressure of the head-use pressure sensor rising up to the predetermined set value.

Embodiments provide methods, apparatuses and systems for depositing a thermal insulator coating onto a desired surface of a mold cavity or insert or preform. Embodiments also provide casting methods using a thermal insulator coating.

A die casting method and apparatus are provided, thereby making it possible to produce a thin diecast product that has hitherto been considered impossible to realize, and a diecast product is also provided. A semi-solidified metallic material is formed having particles in solid phase of a particle size less than 30 m, and is thereupon injected into a die. A die casting machine has a sleeve into which a melt of metallic material is poured, and the semi-solidifying material there when it has a certain proportion of solid phase reached is injected into the die with a plunger to which pressure is applied. The melt of metallic material is poured into the sleeve so that the material occupies inside the sleeve at a proportion in vertical cross-sectional area of 30% or less. The particle size in this semi-solid material is held unvaried in a product as diecast.

A plunger rod for an injection device including a cylindrical sleeve has a distal end provided with a plunger chip configured to slide in the cylindrical sleeve. The plunger rod is configured to move forward and backward in the cylindrical sleeve. The plunger rod includes a support member. The support member is provided on an outer circumference of the plunger rod while being separated from the plunger chip, the support member being slidable with respect to the cylindrical sleeve in response to forward movement of the plunger rod. The support member has a semicircular ring shape, a C shape, or an annular shape. The support member supporting the plunger rod in the cylindrical sleeve.

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.

A piston head for a die-casting machine, in particular a cold chamber type, comprises a front surface for pushing the molten metal and a side wall extending around a head axis, wherein at least one ring seat is provided in said side wall suitable to receive a sealing ring. The bottom of the ring seat is connected to the front surface through holes or connection channels for a metal flow under the sealing ring. The holes or connection channels lead into an annular peripheral portion of said front surface, said annular peripheral portion being inclined with respect to a front plane orthogonal to said head axis so as to be turned towards said head axis.