摘要:
A bulk amorphous alloy, including, based on atomic percentage amounts, between 41 and 63% of Zr, between 18 and 46% of Cu, between 1.5 and 12.5% of Ni, between 4 and 15% of Al, between 0.01 and 5% of Ag, and between 0.01 and 5% of Y.
摘要:
A casting and molding equipment for producing an amorphous alloy structural unit, including an injection system, an alloy melting system, a material feeding system, a mold system, a vacuum system, and a protective gas supply system. The injection system includes an injection tube, an injection mechanism, and a plunger rod; the plunger rod is adapted to move along an inner wall of the injection tube, and the injection mechanism is configured to control a moving direction and moving speed of the plunger rod. The alloy melting system includes a melting chamber and a heating unit; the heating unit is configured to melt an alloy material in the melting chamber; the heating unit includes an induction coil or resistance wire; the melting chamber is disposed in the injection tube, and the heating unit is disposed out of the injection tube.
摘要:
A method for forming an amorphous alloy part, including: placing a master alloy on a melting platform; heating and melting the master alloy under vacuum to yield an alloy melt; stopping heating and allowing the alloy melt to cool to a temperature between a glass transition temperature and a liquidus temperature thereof; and press-forming and cooling the alloy melt, to form the amorphous alloy part.
摘要:
A biodegradable bone nail, including a rod-shaped magnesium screw having a head including a cross groove. The magnesium screw includes an axial chamber disposed below the cross groove, and a depth of the axial chamber is two thirds that of the bone nail. Along the length direction of the axial chamber, a plurality of radial holes are equidistantly disposed every 90 degrees from the bottoms of threads on the wall of the magnesium screw, and the radial holes communicate with the axial chamber.
摘要:
A continuous precision forming device and process for an amorphous alloy or a composite material thereof is provided. By means of the device, when a melting platform with an alloy melt is rotated from the melting position to a position just below the forming mould (9), temperature of the alloy melt can be in the range of the overcooled liquid zone temperature of the alloy melt, and then a loading rod (7) drives the forming mould (9) to proceed with pressing forming. According to the process, press-forming is carried out in a certain temperature interval in the amorphous alloy melt solidification process, and the heating, cooling, solidification and forming in the forming process are coordinated, such that continuous forming of the amorphous alloy is achieved.
摘要:
A casting and molding equipment for producing a casting of amorphous alloy, including an injection system, an alloy melting system, a material feeding system, a mold system, a vacuum system, a protective gas supply system, and a vacuum chamber. The alloy melting system is disposed in the vacuum chamber and includes a melting crucible and a heating unit. The heating unit is disposed out of the melting crucible. The injection system includes an injection tube, an injection mechanism, a plunger rod, and an injection piston disposed at one end of the plunger rod. The injection mechanism is adapted to control the injection piston to move in the injection tube. The injection tube includes a pouring gate. The plunger rod, the injection tube, and the injection piston are all disposed in the vacuum chamber. The plunger rod and the vacuum chamber are vacuum sealed via a bellows.