JPH0747193B2 - Ultra-quenched alloy ribbon production equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Field of Industrial Application> The present invention obtains an amorphous alloy ribbon by spraying a molten metal composed of a metal element or a metal element and a metalloid element on a rotary cooling body and rapidly cooling it. The present invention relates to a manufacturing apparatus for obtaining an ultra-quenched alloy ribbon.

<Conventional technology> Examples of metallic elements Fe, Co, Ni, Cu, Nb, Ta, W and semi-metallic elements Si, P,
Amorphous magnetic alloys obtained by super-quenching alloys such as B and C have recently attracted attention as magnetic cores for transformers and inductors. The manufacturing equipment for these alloys is called the single roll method or the twin roll method, in which an alloy having a predetermined composition is melted in a crucible, and the molten metal is sprayed onto one cooling roll or twin rolls, and then super-rapid cooling is performed on that roll. Was solidified to obtain an alloy.

<Problems to be Solved by the Invention> In these conventional manufacturing apparatuses, one crucible is provided for one cooling roll.
The process of installing crucibles, charging raw materials, and injecting melt (molten metal) was carried out in sequence, and after this was repeated, the ribbon was sprayed onto a cooling roll. Therefore, it has not reached the production stage in the laboratory and has not reached the stage of mass production.

<Means for Solving the Problems> According to the present invention, a turntable that rotates continuously or intermittently, and an upper surface of the turntable that is provided on the turntable and is narrowed by the lower surface of the turntable. A plurality of alloy melting furnaces having a high-frequency heat source penetrating the lower surface, an opening on the upper surface and a nozzle on the lower surface, the crucible mounted on the alloy melting furnace, and the first lower surface of the turntable. And a rotary cooling roll arranged corresponding to the nozzle at the position of No. 2, and the raw material is supplied to the crucible at the second position corresponding to the opening of the crucible on the upper surface of the turntable, and the crucible is supplied to the crucible. An apparatus for producing an ultra-quenched alloy ribbon is obtained, in which the raw material is supplied, the molten metal is formed in the crucible, and the molten metal is injected into the rotary cooling roll in accordance with the rotation of the rotary disk.

<Operation> The steps of supplying the raw material to the crucible, melting in the crucible, and injecting the molten metal from the crucible into the rotary cooling roll through the nozzle at the lower end of the crucible are performed continuously with the rotation of the rotary disk.

<Embodiment> FIG. 1 is a plan view of a turntable of an apparatus for producing ultra-quenched alloy ribbon according to the present invention.
Crucibles indicating eight positions D, E, F, G, and H are provided so as to penetrate from the front surface to the back surface of the rotary disk. A high-frequency heating coil 7 shown in FIG. 2 is provided around each crucible. A rotary cooling roll 3 is arranged immediately below the nozzle of the crucible E with a slight gap from the rotary disk 5.
FIG. 2 shows a schematic side sectional view of the manufacturing apparatus according to the present invention.
Is a nozzle position setting device, 4 is a rotary roll mounting base 6, nozzles are nozzles, and 7 is a high frequency coil. Reference numeral 8 denotes an action assisting device, that is, a robot, which performs the actions of the following 6 steps in each of the crucibles A ... H. First, at the position A, a predetermined crucible is loaded. In B, the raw materials are put into the crucible, and in C, the crucible top is attached and the electric power to the melting furnace is increased to start melting. D
Then in E, the position of the lower surface nozzle of the crucible is made to coincide with the position of the apex of the cooling rotary roll by the nozzle setting position 2 in E, then the cylinder for gas injection is connected from the upper part to the upper end of the crucible and the Ar gas is introduced through the gas suction pipe 1. The gas is sucked in and the molten metal is rapidly sprayed on the rotating cooling roll by the pressure to form an alloy ribbon. Here, in the present invention, the nozzle setting position 2 corresponds to the first position, and the position A corresponds to the second position. At least the furnaces A to E are required, but G and H are necessary for pretreatment for the next charging. That is, F is a place where the power of the furnace is turned off and there is still preheating. Therefore, the furnace is flown in from the cooling water port 11 to cool it, the upper lid of the nozzle is removed, and the nozzle is inspected to the position A. Here, the crucible in the pre-process of injection is heated at an appropriate temperature even while the molten metal of the previous crucible is being ejected, and waits for the ejection order. Thus, the turntable 5 rotates in sequence, the melting crucible with a plurality of nozzles is left on the turntable, and raw material supply, preheating, main heating, and injection steps are continuously performed, and a large amount of ultra-cooling is performed. A ribbon can be made.

<Effects of the Invention> As described above, according to the present invention, alloy ribbons can be continuously manufactured, and materials having different material compositions can be mass-produced in a short time.

[Brief description of drawings]

1 and 2 show a schematic top view and a sectional side view, respectively, of an apparatus for continuously producing super-quenched alloy ribbon according to the present invention. 1 ... Gas injection pipe, 2 ... Nozzle position setting device (3rd robot), 3 ... Rotating cooling roll, 4 ... Rotating roll mount, 5 ... Rotating plate, 6 ... Nozzle (8), 7 ... High frequency coil, 8 … Work auxiliary equipment (first robot, second robot), 9… nozzle retainer plate, 1
0… nozzle top cover spring, 11… cooling water port,

Claims (1)

[Claims] 1. A rotary disk that rotates continuously or intermittently, and a plurality of built-in high-frequency heat sources that are provided on the rotary disk and that are narrowed down by the lower surface of the rotary disk and penetrate from the upper surface to the lower surface of the rotary disk. An alloy melting furnace, an opening on the upper surface and a nozzle on the lower surface, and a crucible mounted on the alloy melting furnace; and a crucible arranged at a first position on the lower surface of the rotating disk corresponding to the nozzle. A rotary cooling roll, the raw material is supplied to the crucible at a second position corresponding to the opening of the crucible on the upper surface of the rotary disk, the raw material is supplied to the crucible, the molten metal is formed in the crucible, and An apparatus for producing an ultra-quenched alloy ribbon, characterized in that the molten metal is injected into the rotary cooling roll according to the rotation of the rotary disk.