JPS5918584A - Method of connecting aluminum stablized superconductive conductor - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Technical field to which the invention pertains] This invention relates to a method for connecting four aluminum-stabilized superconducting bodies in which steel-coated superconducting wires are embedded in an aluminum stabilizing material. Problem] FIG. 1 shows a conventional technique for connecting aluminum stabilized superconducting conductors.

The connection of the four aluminum stabilized superconductors q) in which the superconducting wire (2) is coated with the aluminum stabilizer (1) is shown in Figure 1C.
Each of the four aluminum-stabilized superconductors was joined using the aluminum welding method (4).

When making a magnet by winding four aluminum stabilized superconductors connected in this way around a winding frame, firstly, the connected part becomes thicker, which hinders compactness and uniform distribution of the magnetic field.
Second, since the aluminum is only connected by wire, the current path flowing from the superconducting wire (1) through the aluminum stabilizing material (2) is concentrated in the part shown by the arrow (5), and the aluminum stabilizing material (1) ) The flow does not flow evenly over the whole surface, and the so-called contact resistance becomes large, so that the advantages of using aluminum material as a low-resistance material cannot be utilized.

[Summary of the invention]

The present invention provides a method for connecting four aluminum stabilized superconductors in which copper-coated superconducting wires are embedded in an aluminum stabilizer, in which only the aluminum stabilizer at the ends of the conductors to be connected is removed. The superconducting wires are exposed, and they are arranged in parallel in a grooved aluminum case having the same cross-sectional dimensions as the conductor, and then the aluminum case and the aluminum stabilizing material are adhesively fixed by welding, and placed in the groove. The housed superconducting wire is adhesively fixed with solder.

[Purpose of the invention]

This invention improves the drawbacks of the conventional device mentioned above.
The object of the present invention is to provide a method for connecting four aluminum stabilized superconductors that can be made compact and have low contact resistance.

〔Effect of the invention〕

Since there is no change in the shape of the conductor in one connection, the coil using this connection method can be made compact and have a uniform magnetic field distribution.

2. Since the connected superconducting wires overlap closely, the connection resistance is low, and the low resistance of the aluminum stabilizing material is not impaired.

3. Because the superconducting wires are connected without being deformed, there is no characteristic deterioration due to the connection.

[Embodiments of the invention]

Embodiments of the present invention will be described with reference to FIGS. 2 to 4.

As shown in Figure 2, an aluminum case (7
) was prepared. Next, the aluminum stabilizing material at the ends of the two aluminum stabilized superconducting bodies q) to be joined is melted with a chemical, and the superconducting wire (2) is exposed and prepared (Fig. 3).

As shown in Figure 4, this groove (
Two superconducting wires (2) to be joined in α are set side by side.

After that, the aluminum case ■ and the aluminum stabilizing material (1) are welded (4), and the groove (6) of the aluminum case ■ is welded (4).
) The two superconducting wires (2) placed inside are bonded together with solder (8).

By doing this, the connection resistance was extremely low at 4.2 and 10-Ω per 10 steels, and the low resistance of the aluminum material was utilized, making it possible to make the coil more compact.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the prior art, Fig. 2 is a perspective view of the aluminum material with sieve of the present invention, Fig. 3 is a perspective view of the aluminum stabilizing material to be connected, and Fig. 4 is a diagram showing the completed connection of the present invention. FIG. 1... Aluminum stabilizing material 2... Superconducting wire 3.
...Four aluminum stabilized superconductors 4...Aluminum welded part 5...Current path (7317) Agent Patent attorney Kensuke Chika (and 1 other person) Fig. 1 Fig. 2 Fig. 3 Fig. 4 f Wow f72

Claims (1)

[Claims] In a method for connecting four aluminum stabilized superconductors in which a C1 copper-coated superconducting wire is embedded in an aluminum stabilizing material, the superconducting wire is connected by removing only the aluminum stabilizing material at the end of the conductor to be connected. The superconducting conductors are exposed and arranged in parallel C1 in a grooved aluminum case having the same cross-sectional external dimensions as the conductors, and then the aluminum case and the aluminum stabilizing material are bonded and fixed by welding, and the superconducting conductors housed in the grooves. A method for connecting an aluminum stabilized superconducting lid, characterized by adhesively fixing wires with solder.