Die casting device and method for amorphous alloy

Abstract

A die casting apparatus ( 100 ) for amorphous alloy and a method of die casting amorphous alloy may be provided. The die casting apparatus may comprise a stationary die ( 1 ) and a movable die ( 2 ); a sealed cabin ( 4 ) defining a sealing chamber ( 40 ); a protecting gas supplying device connected with the sealed cabin ( 4 ) for supplying the protecting gas into the sealing chamber ( 40 ); a melting device ( 5 ) for receiving and melting amorphous alloy; a feed sleeve ( 6 ) having a molten material inlet ( 60 ), with a plunger ( 7 ) positioned therein for injecting the molten amorphous alloy from the melting device ( 5 ) into a die chamber via the molten material inlet ( 60 ); a driving device ( 8 ) connected with the plunger ( 7 ) for driving the plunger ( 7 ) in the feed sleeve ( 6 ); and a gas purifying device ( 10 ) communicated with the sealed cabin ( 4 ) for purifying the gas from the sealed cabin ( 4 ).

What is claimed is: 
     
         1 . A method of die casting an amorphous alloy, comprising:
 treating gas in a sealing chamber defined in a sealed cabin;   supplying a protecting gas into the sealing chamber to maintain the protecting gas in the sealing chamber to a pressure higher than an environmental pressure;   feeding amorphous alloy into a melting device disposed inside the sealing chamber to obtain the molten amorphous alloy while the protecting gas filled within the sealing chamber overflowing outside;   feeding the molten amorphous alloy into a die chamber defined by a mated stationary die and a movable die via a feed sleeve with a plunger positioned therein; and   opening the mated stationary and movable dies to extract at least a component formed at least partially of the amorphous alloy from inside the die chamber while the protecting gas filled within the sealing chamber overflowing outside.   
     
     
         2 . The method of  claim 1 , wherein the treating of the gas is performed by vacuum suction of the sealing chamber via a vacuum suction device or purifying gas inside the sealing chamber by a gas purifier. 
     
     
         3 . The method of  claim 1 , wherein the protecting gas inside the sealing chamber has a pressure between 1 atm and 1.1 atm. 
     
     
         4 . The method of  claim 1 , wherein the protecting gas is at least one of inert gases. 
     
     
         5 . The method of  claim 1 , wherein the amorphous alloy is Zr a Al b Cu c M d , where M is at least one selected from the group consisting of Nb, Sc, Ta, Ni, Co, Y, Ag, Fe, Sn, Hf, Ti, Be and rare earth elements, and a, b, and c are atomic percentages, where 30≦a≦70, 5≦b≦35, 5≦c≦40, and 5≦d≦30. 
     
     
         6 . The method of  claim 1 , wherein the gas in the sealing chamber contains at least one of N 2 , O 2 , H 2 O and CO 2  which has a concentration less than 10000 ppm. 
     
     
         7 . The method of  claim 1 , wherein the metallic alloy is fed into the melting device via a feeding port on the sealed cabin while the protecting gas filled within the sealing chamber overflowing outside via the feeding port; and
 the component is extracted from the die chamber via an output port on the sealed cabin while the protecting gas filled within the sealing chamber overflowing outside via the output port.