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A method for manufacturing a high-temperature superconducting tape inner sealing joint

A technology of high temperature superconducting strip material and production method, which is applied in welding equipment, manufacturing tools, metal processing equipment and other directions, can solve the problems of thickness difference, uneven surface, low joint strength, etc., and achieves increased selection range, smooth appearance, The effect of uniform thickness

Active Publication Date: 2022-02-11
SHANGHAI SHANGCHUANG SUPERCONDUCTING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It mainly solves the technical problems such as low joint strength, thickness difference between the joint and the original strip, uneven surface, poor mechanical properties and bending performance existing in the existing high-temperature superconducting tape after packaging

Method used

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  • A method for manufacturing a high-temperature superconducting tape inner sealing joint
  • A method for manufacturing a high-temperature superconducting tape inner sealing joint
  • A method for manufacturing a high-temperature superconducting tape inner sealing joint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1, a method for manufacturing a high-temperature superconducting tape inner sealing joint, the specific implementation steps are as follows:

[0025] 1. Turn on the switch 8 of the constant temperature heating platform (model 6K-2020), set the constant temperature to 230°C, and start heating. The temperature fluctuation is ±1°C.

[0026] 2. 2G-HTS strip structure with sandwich structure such as figure 1 As shown, there is a superconducting core tape 2 covered with a superconducting layer 3 in the middle, an encapsulation layer A1 on the superconducting surface side 4, an encapsulation layer B6 on the base tape surface side 5, and an encapsulation solder 7 beside the superconducting core tape 2. When the temperature of the heating plate 9 of the constant temperature heating platform 8 is 230 ° C and stabilized, one end of the 2G-HTS strip A10 with a sandwich structure is placed on the heating plate 9, as figure 2 As shown, the encapsulation layer A1 on the s...

Embodiment 2

[0032] In Embodiment 2, the solder sheet 11 is made of Sn-Pb-Ag alloy (melting point 179° C.), and the rest are the same as in Embodiment 1.

Embodiment 3

[0033] In Embodiment 3, the solder sheet 11 is made of Sn-Bi alloy (melting point 139° C.), and the rest are the same as in Embodiment 1.

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Abstract

The invention provides a method for manufacturing a high-temperature superconducting strip internal sealing joint, which mainly solves the problems of low joint strength, difference in thickness between the joint and the original strip, and uneven surface after welding of the existing high-temperature superconducting strip. Technical problems such as flatness, poor mechanical properties, and poor bending properties. The technical solution includes: a. tearing apart one end of the strip A and the strip B with a sandwich structure. b. Place a solder sheet at the tearing part of the strip A, and finally place the tearing test of the strip B on the solder sheet to form an overlapping structure before welding. c. Place the lap joints of strip A and strip B on the welding head production mold, and adjust the alignment of the lap joints of strip A and strip B through the positioning groove. d. Place the welding head production mold on the lower heating plate of the hot press, activate the press switch, press down on the upper heating plate, and air cool the mold; when the temperature of the lower heating plate is <80°C, it can be taken out to complete the welding joint production .

Description

technical field [0001] The invention relates to welding of superconducting strips, in particular to a method for manufacturing an inner sealing joint of high-temperature superconducting strips. Background technique [0002] Since the discovery of Y-Ba-Cu-O (YBCO) in 1987 for more than 30 years, RE-Ba-Cu-O (REBCO, RE = rare earth elements) Superconductors have been greatly developed, and the length of the preparation has reached hundreds of meters, or even thousands of meters. be applied in. [0003] High-temperature superconducting tapes are more and more widely used in power transmission (such as winding superconducting cables), large magnets and superconducting motors, but at the same time, the requirements for high-temperature superconducting tapes are also getting higher and higher. Existing The processing technology can provide high-temperature superconducting strips on the order of hundreds of meters to kilometers, which obviously cannot meet the length requirements ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K20/02B23K20/24B23K20/26
CPCB23K20/026B23K20/24B23K20/26
Inventor 张永军蔡传兵张轩郑龙胡宏伟
Owner SHANGHAI SHANGCHUANG SUPERCONDUCTING TECH CO LTD
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