An apparatus (1) for die-casting metal objects in a semisolid state, comprising a mold which comprises an upper mold half (3) which is adapted to be coupled to a lower mold half (2) in order to define a mold cavity (4), an oven (7) being arranged below the lower mold half (2) and being provided with a supply duct (9) for liquid metal (8) which connects the oven to the mold cavity (4), the upper mold half (3) being provided with a cavity within which a forging piston (5), which accommodates a flow control plunger (6) inside it, is freely movable between the upper mold half (3) and the lower mold half (2), a vacuum channel (10) being provided circumferentially around the piece to be cast and being connected to the mold cavity (4) by means of vent channels (12), the forging piston (5) comprising a connecting channel (14) to the vacuum, in order to create the vacuum, the upper mold half (2) comprising a connecting channel (11) for connection to a vacuum pump, which connects the vacuum channel (10) to the outside, and further comprising a solenoid valve (21) for controlling the vacuum inside the channel (14) and a solenoid valve (20) for controlling the vacuum in the connecting channel (11) for connection to the vacuum pump.
B22D 17/00 - Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
B22D 18/02 - Pressure casting making use of mechanical pressing devices, e.g. cast-forging
B22D 18/04 - Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould
B22D 18/06 - Vacuum casting, i.e. making use of vacuum to fill the mould
B22D 18/08 - Controlling, supervising, e.g. for safety reasons
2.
Apparatus and method for the die casting in the semisolid state of objects made of brass, bronze, alloys of aluminum, magnesium and light alloys and the like
An apparatus for the die casting in the semisolid state of objects made of brass, bronze, alloys of aluminum, magnesium and light alloys and the like, includes an upper die part adapted to be mated with a lower die part, the mating between the upper die part and the lower die part forming a casting cavity, a furnace being arranged below the lower die part and being provided with a duct for feeding liquid metal which connects to the casting cavity. The upper die part is provided with a cavity in which a forging piston can move freely, the piston accommodating internally a flow control plunger, and having, between the upper die part and the lower die part, circumferentially around the part to be cast, a vacuum channel connected to the casting cavity by at least one venting channel.
B22D 18/06 - Vacuum casting, i.e. making use of vacuum to fill the mould
3.
APPARATUS AND METHOD FOR THE DIE CASTING IN THE SEMISOLID STATE OF OBJECTS MADE OF BRASS, BRONZE, ALLOYS OF ALUMINUM, MAGNESIUM AND LIGHT ALLOYS AND THE LIKE
An apparatus (1) for the die casting in the semisolid state of objects made of brass, bronze, alloys of aluminum, magnesium and light alloys and the like, comprising an upper die part (3) adapted to be mated with a lower die part (2), the mating between the upper die part (3) and the lower die part (2) forming a casting cavity (4), a furnace (7) being arranged below the lower die part (2) and being provided with a duct (9) for feeding liquid metal (8) which connects to the casting cavity (4), the upper die part (3) being provided with a cavity in which a forging piston (5) can move freely, the piston accommodating internally a flow control plunger (6), its particularity consisting in that it comprises, between the upper die part (3) and the lower die part (2), circumferentially around the part to be cast, a vacuum channel (10) connected to the casting cavity (4) by means of at least one venting channel (12).
B22D 18/02 - Pressure casting making use of mechanical pressing devices, e.g. cast-forging
B22D 18/06 - Vacuum casting, i.e. making use of vacuum to fill the mould
B22C 9/28 - Moulds for peculiarly-shaped castings for wheels, rolls, or rollers
4.
APPARATUS AND METHOD FOR THE DIE CASTING IN THE SEMISOLID STATE OF OBJECTS MADE OF BRASS, BRONZE, ALLOYS OF ALUMINUM, MAGNESIUM AND LIGHT ALLOYS AND THE LIKE
An apparatus (1) for the die casting in the semisolid state of objects made of brass, bronze, alloys of aluminum, magnesium and light alloys and the like, comprising an upper die part (3) adapted to be mated with a lower die part (2), the mating between the upper die part (3) and the lower die part (2) forming a casting cavity (4), a furnace (7) being arranged below the lower die part (2) and being provided with a duct (9) for feeding liquid metal (8) which connects to the casting cavity (4), the upper die part (3) being provided with a cavity in which a forging piston (5) can move freely, the piston accommodating internally a flow control plunger (6), its particularity consisting in that it comprises, between the upper die part (3) and the lower die part (2), circumferentially around the part to be cast, a vacuum channel (10) connected to the casting cavity (4) by means of at least one venting channel (12).
An apparatus (1) for casting and forging objects made of brass, bronze, aluminum alloys, light alloys and the like, comprising at least one first forging station (5), a second station (6) for the extraction of the forged part, a third station (7) for the cooling and lubrication of the die, the first, second and third stations being arranged in a position that lies above a turntable (2), the turntable being adapted to support a first, second and third die (3), the first, second and third dies being adapted to be moved, as a consequence of the rotation of the turntable (2), at the first, second and third stations (5, 6, 7).
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