Abstract: This invention relates to the technical field of harmonic elimination for ferromagnetic resonance for a voltage transformer (abbreviated as PT), in particular, to a harmonic elimination method for ferromagnetic resonance for an active resistance-matching voltage transformer based on PID-adjustment, including compiling a resistance matching algorithm; designing and building a harmonic elimination control system based on the PID control strategy; presetting an active resistance-matching strategy; designing an engineering scheme for placing resistors.

Abstract: A nail gun having a driving and controlling mechanism. The driving and controlling mechanism comprises a driving assembly disposed inside a casing of the nail gun for striking nails in a striking direction; and a control assembly controlling the driving assembly. The driving assembly comprises a piston movably disposed inside the casing and attached to a striking member for striking the nails; at least one power spring in contact with the piston; a pushing component for pushing the piston towards the power spring; and a motor for rotating the pushing component. The control assembly comprises a main switch configured to produce a first electronic signal; and a safety switch configured to produce a second electronic signal. The main switch and the safety switch are in communication with the motor such that the motor is configured to operate when it receives both the first electronic signal and the second electronic signal.

Abstract: A nail gun having an energy storage mechanism for storing energy used for striking nails out of the nail gun, the energy storage mechanism comprises a guiding rod attached to a fixed plate assembly; a piston disposed on the guiding rod; a striking member mounted on the piston for striking the nails; at least one power spring disposed around an outer periphery of the guiding rod; a guide sleeve moveably disposed around the outer periphery of the guiding rod and between the power spring and the guiding rod; wherein a first end of the power spring abuts against the piston and is configured to be compressed to store energy.

Abstract: This invention relates to the technical field of harmonic elimination for ferromagnetic resonance for a voltage transformer (abbreviated as PT), in particular, to a harmonic elimination method for ferromagnetic resonance for an active resistance-matching voltage transformer based on PID-adjustment, including compiling a resistance matching algorithm; designing and building a harmonic elimination control system based on the PID control strategy; presetting an active resistance-matching strategy; designing an engineering scheme for placing resistors.

Abstract: A continuous precision forming device and process for an amorphous alloy 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.

Abstract: The present invention relates to a high hardness amorphous composite, a method of preparing the high hardness amorphous composite and application thereof. The high hardness amorphous composite includes a basic alloy component, a hard additive and a bonding additive. The basic alloy component includes 45-60 mole % Zr, 5-10 mole % Hf, 5-15 mole % Al, 8-22 mole % Ni and 6-14 mole % Cu, the hard additive is ZrC or WC nanometer powder with addition amount at 12-26 wt % of the basic alloy component, particle diameter of the WC nanometer powder is 10-100 nm, and the bonding additive is any one or two selected from groups of Re, W or Mo with addition amount at 4-8 wt % of the basic alloy component. The high hardness Zr-based amorphous composite with good workability and formability is provided by improving composition of alloy based on Zr—Al—Ni—Cu, adding new component and adjusting component content.

Abstract: 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.

Abstract: 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.

Abstract: The present invention relates to a high hardness amorphous composite, a method of preparing the high hardness amorphous composite and application thereof. The high hardness amorphous composite includes a basic alloy component, a hard additive and a bonding additive. The basic alloy component includes 45-60 mole % Zr, 5-10 mole % Hf, 5-15 mole % Al, 8-22 mole % Ni and 6-14 mole % Cu, the hard additive is ZrC or WC nanometer powder with addition amount at 12-26 wt % of the basic alloy component, particle diameter of the WC nanometer powder is 10-100 nm, and the bonding additive is any one or two selected from groups of Re, W or Mo with addition amount at 4-8 wt % of the basic alloy component. The high hardness Zr-based amorphous composite with good workability and formability is provided by improving composition of alloy based on Zr—Al—Ni—Cu, adding new component and adjusting component content.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.