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1852results about "Molten metal conveying equipments" patented technology

Amorphous alloy diecasting equipment and amorphous alloy diecasting process

The invention discloses an amorphous alloy diecasting equipment and an amorphous alloy diecasting process. The amorphous alloy diecasting equipment comprises a fixed die, a movable die, a sealed bin, a protection-gas supplying device, a melting container, a pressing and ejecting cylinder, a driving device and a harmful-gas purifying device; the fixed die and the movable die can be opened and closed, and a die cavity is formed between the fixed die and the movable die in a defining way when the fixed die and the movable die are closed; a sealed chamber is formed in the sealed bin in a defining way, and the sealed bin is provided with a feeding opening; the protection-gas supplying device is connected with the sealed chamber and used for supplying a protection gas to the sealed chamber, wherein the protection gas in the sealed chamber is at positive pressure; the melting container is arranged in the sealed bin; the pressing and ejecting cylinder is communicated with the die cavity and provided with a melt inlet; the pressing and ejecting cylinder is internally provided with a pressing and ejecting piston used for ejecting the melted amorphous alloy into the die cavity; and the harmful-gas purifying device is connected with the sealed chamber and used for purifying the harmful gas in the sealed chamber. The amorphous alloy diecasting equipment disclosed by the embodiment of the invention has a simple structure, adopts the protective gas at positive pressure, does not need to establish a high vacuum degree and has low manufacturing and maintaining cost.
Owner:BYD CO LTD

Rail-wheel type semi-automatic bilateral casting machine

The invention discloses a rail-wheel type semi-automatic bilateral casting machine which comprises a frame body, a travel driving unit, a casting ladle, a tilting unit, a side shifter, a counterweight unit, a controller and four tilting prevention units. The travel driving unit located at the front end of the frame body is used for driving the casting machine to travel along an H-shaped guide rail, and a seat and the controller are mounted at the rear end of the frame body; the tilting unit is used for driving the casting ladle to tilt to pour over liquid metal in the casting ladle, two sprues are arranged in the top of the casting ladle, and the casting ladle is mounted on the tilting unit through a rotating shaft of the same; the side shifter can drive the casting ladle to move laterally and can enable the counterweight unit to move backwardly synchronously; the tilting prevention units are respectively mounted on outer sides of driving wheels and driven wheels. By the arrangement, technical defects of an existing casting machine can be overcome; the rail-wheel type semi-automatic bilateral casting machine is used for batch casting situations and has functions of synchronous counterweight, safety tilting prevention, bilateral casting and the like, and has the advantages of accurate positioning, reliable operation, convenience in operation and maintenance and the like.
Owner:ANHUI UNIV OF SCI & TECH +1

Method for manufacturing compound core low-segregation large-sized hollow steel ingot

InactiveCN101279359AGuaranteed sequential solidificationIncrease profitFoundry mouldsFoundry coresTemperature differenceIngot
The invention relates to a casting process of all levels of large-scale hollow ingots below 250-ton level, in particular to a manufacturing method of composite core low-segregation large-scale hollow ingots. The manufacturing method is applicable to the preparation process of all large-scale hollow ingots which adopt the composite core pouring, comprising the casting of the hollow ingots with various shapes, specifications and materials. In addition to the usage of the computer simulation means to reasonably design an ingot mold and a pouring system, the invention mainly adopts the composite core hole forming technology, the large temperature difference cooling technology, the narrow gap molding sand technology, the bottom pouring dispersible gate drainage technology, the thick and large chassis mandatory cooling technology and a liquid nitrogen ejector device etc., and the invention further designs the corresponding mold and the equipment, pours the steel water with the different materials and prepares the low-segregation hollow ingots. The invention can ensure the serial solidification of the hollow ingots, reduce the defects of shrinkage, loose and inclusion, control the segregation position, lead the segregation band of the hollow ingots to be positioned at the middle position and improve the utilization rate and the using range of the hollow ingots.
Owner:INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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