JPH06170499A - Apparatus and method for production metal strip - Google Patents

Abstract

PURPOSE:To produce a metal strip by a simple method with little contamination. CONSTITUTION:In this apparatus, a melting chamber 1, an arc melting electrode 8 arranged in the melting chamber, a water cooling mold 4, nozzle 7, roll chamber 2 and a roll 3 arranged in the roll chamber, are provided. The nozzle 7 is made of boron nitride, and a positional changable means and revolutional speed changable means are arranged in the roll 3. After replacing the air in the melting chamber with the inert gas, metal material is arc-melted. Gas pressure is made to be high and ejected on the roll through the nozzle 7, and by rotating the roll 3, the strip is produced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the production of thin ribbons of active refractory metal materials such as titanium and titanium alloys by the arc method.

[0002]

2. Description of the Related Art A method for producing a metal ribbon is a single roll method,
There are various methods such as the twin roll method and the centrifugal method, but the method for producing the active high melting point metal ribbon has not been studied so much. Particularly, as a melting method, high frequency melting using a crucible and melting by resistance heating are mainly performed. In recent years, there has been a need for an active high-melting-point alloy ribbon which is free of pollution.

[0003]

In the conventional method, since a crucible made of ceramic is used for melting, contamination from the crucible poses a problem, and a material requiring purity cannot be easily obtained. Therefore, it would be desirable to be able to produce metal ribbon in a simpler and less contaminating manner.

[0004]

In order to solve the above problems, the present invention is directed to a melting chamber 1, an arc melting electrode 8 provided in the melting chamber, a water-cooled mold 4, a nozzle 7, a roll chamber 2, An apparatus for producing a metal ribbon comprising a roll 3 provided in a roll chamber, a metal ribbon for producing a metal ribbon by injecting a metal material arc-melted on a water-cooled mold through a nozzle onto a roll. This is a manufacturing method. More preferably, the nozzle is made of boron nitride.

[0005]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a sectional view of a metal ribbon manufacturing apparatus according to the present invention. First, the configuration of this embodiment will be described. Melting chamber 1
Is a hinged door on the front side, which is filled with titanium 6 and alloy material 19 and is evacuated by an oil rotary pump 18 and an oil diffusion pump 17 and then gas is introduced from a gas valve 10 to replace the gas, and the center of the water cooling mold 4 After the alloy material is melted and manufactured by the arc melting electrode 8 in the alloy preparation part 5 provided around the nozzle 7, the alloy material is placed on the central nozzle 7 by the material reversing rod 9 (universal joint). It is a chamber for putting 20 and performing arc melting by the arc melting electrode 8 (universal joint). An arc power source 22 for supplying electric power is connected to the arc melting electrode.
The melting chamber 1 is further connected to a reserve tank 11 and a gas introduction valve 12 for ejecting a melting material at a gas pressure. Further, a valve 13 is provided to make the roll chamber 2 the same pressure as the melting chamber 1 as needed, and the roll chamber 2 is connected to the lower portion of the melting chamber 1. The roll chamber 2 is provided with a roll 3 (variable roll position vertical / horizontal / rotational speed variable).

Next, a method of manufacturing a ribbon using the apparatus of this embodiment will be described. (1) Titanium 6 and alloy material 19 are put into the alloy preparation part 5 in the melting chamber 1. (2) The same pressure valve 21 is opened by the oil rotary pump 18, and the melting chamber 1 and the roll chamber 2 are roughly vacuumed via the roughing valve 14. Exhaust to the specified pressure. (3) After the roughing valve 14 is closed, the auxiliary pulling valve 16 of the oil diffusion pump 17 is opened, and the main valve 15 is further opened to perform high vacuum exhaust. (4) After reaching a predetermined pressure, the main valve 15 and the same pressure valve 21 are closed, and the gas is replaced through the gas introduction valve 10 and the gas same pressure valve 13 to the atmospheric pressure. (5) An alloy is prepared by arc-melting the titanium 6 and the alloy material 19 of the alloy-preparing part 5 with the arc-melting electrode 8. (6) The sample inverting rod 9 moves the alloy onto the nozzle 7 from the alloy preparation section. (7) The cooling roll 3 is rotated. (8) The titanium alloy on the nozzle 7 is melted by the arc melting electrode 8. (9) The arc melting electrode 8 is lowered below the center of the nozzle 7 and the gas equalizing valve 13 is closed to introduce gas from the reserve tank 11 into the melting chamber through the pressurizing valve 12. As a result, the molten titanium alloy is ejected onto the cooling roll in the roll chamber, and a ribbon is formed by the rotation of the cooling roll. (10) Take out the ribbon from the front door of the roll chamber 2. As described above, a titanium-based alloy ribbon with less pollution can be manufactured. In the above manufacturing equipment, the nozzle can be attached and detached,
Cooling roll rotation speed variable (200 to 2000 RPM) Gas pressure variable, cooling roll-nozzle gap variable (5
mm ± 5 mm), and the thickness of the ribbon can be changed only by changing these. The above is a description of one embodiment according to the present invention, and the respective parts are not limited to the above-described ones, and can be replaced with arbitrary ones. For example, in terms of materials, in the broad sense, active high melting point alloys other than titanium (titanium-based, vanadium-based, zirconium-based, niobium-based, rare earth-based alloys) and the like are also included.
Applications include hydrogen storage alloys.

[0007]

As described above, according to the apparatus and method for manufacturing a metal ribbon of the present invention, it is possible to manufacture a high-purity ribbon with less pollution in a simple process, which is more economical than the conventional method. It is also excellent in sex.

[Brief description of drawings]

FIG. 1 is a front view (cross-sectional view) of an embodiment of the present invention.

FIG. 2 is a plan view of the nozzle.

FIG. 3 is a sectional view of the same.

[Figure 4] The same diagram

FIG. 5 is a plan view of the water-cooled mold.

FIG. 6 is a sectional view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Melting chamber 2 Roll chamber 3 Roll 4 Water cooling mold 5 Alloy making part 6 Titanium 7 Nozzle 8 Arc melting electrode 9 Sample reversing rod 10 Gas valve 11 Reserve tank 12 Pressurizing valve 13 Gas equalizing valve 14 Roughing valve 15 Main valve 16 Valve 17 Oil Diffusion Pump 18 Oil Rotary Pump 19 Alloy Material 20 Alloy Material 21 Same Pressure Valve 22 Arc Power Supply

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] December 21, 1992

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 4

[Correction method] Change

[Correction content]

[Figure 4]

Claims (4)

[Claims] 1. A melting chamber (1), an arc melting electrode (8) provided in the melting chamber, a water-cooled mold (4), a nozzle (7),
Roll chamber (2), roll (3) provided in the roll chamber
An apparatus for manufacturing a metal ribbon. 2. A method for producing a metal ribbon, in which a metal material arc-melted in a water-cooled mold (4) is sprayed onto a roll through a nozzle to produce a ribbon of the material. 3. The apparatus for producing a metal ribbon according to claim 1, wherein the nozzle is made of boron nitride. 4. The method for producing a metal ribbon according to claim 2, wherein the nozzle is made of boron nitride.