A die casting machine of an embodiment includes: a holding furnace holding molten metal; a sleeve located outside the holding furnace and having a molten metal supply port passing through a mold; a plunger sliding through the sleeve and including a plunger rod and a plunger tip fixed to a tip of the plunger rod; a molten metal supply pipe pushed against the sleeve to cover the molten metal supply port and supplying the molten metal into the sleeve; and a pushing force variable mechanism reducing a pushing force for the sleeve in the molten metal supply pipe when the plunger is sliding.

The invention provides a double station vacuum die casting machine, comprising a driving device, a first die casting unit, a second die casting unit, a feeding component, a vacuum pump and a housing, the vacuum pump is arranged outside the housing, the driving device is arranged inside the housing, and the first die casting unit and the second die casting unit are respectively arranged on both sides of the driving device; the driving device comprises a driving unit, a first injection rod assembly and a second injection rod assembly, the first injection rod assembly and the second injection rod assembly are respectively arranged on both sides of the driving unit, the first injection rod assembly is used to provide power for die casting of the first die casting unit, and the second injection rod assembly is used to provide power for the second die casting unit.

The invention provides a double station vacuum die casting machine, comprising a driving device, a first die casting unit, a second die casting unit, a feeding component, a vacuum pump and a housing, the vacuum pump is arranged outside the housing, the driving device is arranged inside the housing, and the first die casting unit and the second die casting unit are respectively arranged on both sides of the driving device; the driving device comprises a driving unit, a first injection rod assembly and a second injection rod assembly, the first injection rod assembly and the second injection rod assembly are respectively arranged on both sides of the driving unit, the first injection rod assembly is used to provide power for die casting of the first die casting unit, and the second injection rod assembly is used to provide power for the second die casting unit.

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.

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.

A degassing device configured to remove gas from a mold for die-casting, which includes a first path to inject molten metal into a cavity, a second path to remove gas from the cavity and a third path to measure the degree of the vacuum of the cavity. The degassing device incudes a first path opening/closing device connecting the first path and a vacuum device, a second path opening/closing device connecting the second path and the vacuum device and a controller capable of providing an actuation timing time lag between the actuation timings of the first path opening/closing device and the second path opening/closing device.

A degassing device configured to remove gas from a mold for die-casting, which includes a first path to inject molten metal into a cavity, a second path to remove gas from the cavity and a third path to measure the degree of the vacuum of the cavity. The degassing device incudes a first path opening/closing device connecting the first path and a vacuum device, a second path opening/closing device connecting the second path and the vacuum device and a controller capable of providing an actuation timing time lag between the actuation timings of the first path opening/closing device and the second path opening/closing device.

Provided is an aluminum alloy for die casting. The aluminum alloy includes: 3-10 wt % silicon (Si); 0.1-2.0 wt % magnesium (Mg); 0.01-1.3 wt % iron (Fe); 0.01-2.0 wt % zinc (Zn); 0.01-1.5 wt % copper (Cu); 0.01-0.5 wt % manganese (Mn); 0.01-0.5 wt % chrome (Cr); 0.01˜2.0 wt % lanthanum (La); 0.0˜12.0 wt % cerium (Ce); 0.0˜12.0 wt % strontium (Sr); rest aluminum (Al); and unavoidable impurities. The aluminum alloy is improved in not only corrosion-resistance but also physical properties.

A product state estimation device includes: an examination result acquisition device that acquires an examination result related to a state of a product obtained through each shot by a die-casting machine; a time series data acquisition device that acquires time series data based on an output from a sensor that detects an operation state of the die-casting machine at each shot; a time series data manipulation device that performs manipulation that clips data of a predetermined time interval out of the time series data; an estimation model generation device that generates an estimation model by using a neural network with the examination result of the product and the manipulated time series data as learning data; and an estimation device that estimates information related to quality of the product based on the manipulated time series data obtained from a plurality of detection signals at each shot by using the estimation model.

A die-casting machine has a casting mould, a casting chamber, a casting piston arranged in an axially moveable manner in the casting chamber, a melt inlet channel which leads into the casting chamber, a shut-off valve in the melt inlet channel, a melt outlet channel which leads from the casting chamber to the casting mould, and a control unit for controlling the casting piston. For carrying out a respective casting process, the die-casting machine is configured, for a mould-filling phase, to bring the shut-off valve into a closed position, and to control the casting piston in the casting chamber to advance from a casting start position to a filling end position, in order to press melt material into the casting mould via the melt outlet channel, and, for a subsequent refilling phase, to bring the shut-off valve into an open position and to control the casting piston to move back to the casting start position, in order to supply the casting chamber with melt material via the melt inlet channel. A closure nozzle is provided in the melt outlet channel. The machine is configured to keep the closure nozzle closed in the refilling phase and, in the mould-filling phase, with the shut-off valve remaining closed, to firstly move the casting piston back from the casting start position to an additional stroke position and to subsequently advance it from the additional stroke position via the casting start position to the filling end position, and at this time to keep the closure nozzle closed during the return movement of the casting piston to the additional stroke position and to only open it when the casting piston advances again.