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CN-122000131-A - Preparation process and preparation system of superconducting niobium-titanium alloy cast tube

CN122000131ACN 122000131 ACN122000131 ACN 122000131ACN-122000131-A

Abstract

The invention provides a preparation process and a preparation system of a superconducting niobium-titanium alloy cast tube, which are applied to the technical field of preparation of superconducting niobium-titanium wires, and comprise a guide rail and a travelling trolley capable of moving along the guide rail, wherein a plurality of working areas are sequentially arranged from an input end to an output end along the guide rail, a bottom plate carrying an oxygen-free copper cladding tube is enabled to move between a first tank body and a second tank body in each treatment area, continuous conveying and accurate positioning of the oxygen-free copper cladding tube are achieved, fixing of the oxygen-free copper cladding tube in a vertical state is ensured, on the basis, consistency of pickling and clamping is effectively improved through ultrasonic cleaning, acid pickling with strong and weak acid and air flow acid and water mark removal, meanwhile, local acid mark and cross contamination are avoided through ultrasonic cleaning, multi-step pickling technology and anti-dissipation measures, the system can adapt to requirements of mechanized and automatic batch production of oxygen-free copper cladding tubes, and preparation quality and industrialization application capacity of the superconducting niobium-titanium alloy cast tube are remarkably improved, and industrialization requirements are met.

Inventors

  • LI JUNMIN
  • YANG HELIN
  • MAO LEI
  • LI TONGFU
  • FANG YANGGANG

Assignees

  • 滁州润翰微波科技有限公司

Dates

Publication Date
20260508
Application Date
20260316

Claims (10)

  1. 1. The superconducting niobium-titanium alloy cast tube preparation system comprises a guide rail (2) and a travelling trolley (3) capable of moving along the guide rail (2), and a plurality of working areas which are sequentially arranged from an input end to an output end along the guide rail (2), and is characterized in that: the working area comprises a strong acid washing area, a first acid removing area, a weak acid washing area, a second acid removing area, a water washing area and a hot air drying area, wherein a plurality of first tank bodies (1) and second tank bodies (25) are arranged below the guide rail (2); the oxygen-free copper cladding tube clamping assembly comprises a circular bottom plate (7), a plurality of water passing holes (8) distributed in a circumferential array are formed in the periphery of the bottom plate (7), a screw rod (9) is fixedly connected inside each water passing hole (8) through a connecting rib, the lower end of the screw rod (9) extends to the lower side of the bottom plate (7), the upper end of the screw rod protrudes above the bottom plate (7), a fixing hole (10) is formed in the center of the bottom plate (7), and a connecting rod (14) is fixedly connected in the fixing hole (10); The screw rod (9) is connected with a hexagonal nut (15) in a threaded manner and is used for abutting against the inner wall of the oxygen-free copper cladding tube so as to keep the vertical posture, the upper surface of the bottom plate (7) is covered with a sintering net layer (11), the center of the sintering net layer (11) is provided with a second through hole (13) for the connecting rod (14) to pass through, and the periphery of the second through hole is provided with a first through hole (12) for the screw rod (9) to pass through.
  2. 2. The superconducting niobium-titanium alloy cast tube preparation system according to claim 1, wherein the first tank body (1) and the second tank body (25) are arranged in a staggered mode, the caliber of the second tank body (25) is larger than that of the first tank body (1), and each tank body is correspondingly arranged in the working area.
  3. 3. The superconducting niobium-titanium alloy cast tube preparation system according to claim 2, wherein a first enclosing plate (19) is fixedly connected to the bottom of the second tank body (25), the first enclosing plate (19) and the bottom wall of the second tank body (25) form a cavity structure, the center of the inner bottom wall of the first enclosing plate (19) is upwards convex, an air tap (20) is fixedly connected to the center of the bottom of the first enclosing plate (19) and used for inputting cold air or hot air into the cavity, a plurality of air passing through holes (21) are formed in the bottom of the second tank body (25) corresponding to the position of the first enclosing plate (19), and a plurality of second return pipes (24) communicated with the inside of the first enclosing plate (19) are arranged at the periphery of the bottom of the first enclosing plate (19).
  4. 4. The superconducting niobium-titanium alloy cast tube preparation system according to claim 1, wherein a flow blocking annular plate (23) is further arranged in the second tank body (25), a first return pipe (22) is arranged at the bottom of the second tank body (25), and the flow blocking annular plate (23) is used for guiding waste liquid flowing back into the second tank body (25) to the first return pipe (22).
  5. 5. The superconducting niobium-titanium alloy cast tube preparation system according to claim 1, wherein a plurality of through air holes (16) are formed in the hexagonal nut (15).
  6. 6. The superconducting niobium-titanium alloy cast tube preparation system is characterized in that a hanging lug (6) is arranged at the upper end of the connecting rod (14), a telescopic bar (4) is installed at the bottom of the travelling trolley (3) in a rotating connection mode, and a hanging hook (5) is connected to the output end of the telescopic bar (4).
  7. 7. The preparation system of the superconducting niobium-titanium alloy cast tube as claimed in claim 1, wherein the upper part of the connecting rod (14) is fixedly connected with a supporting block (18), and an arc-shaped cover (17) is detachably inserted above the supporting block (18) by the connecting rod (14).
  8. 8. The preparation system of the superconducting niobium-titanium alloy cast tube according to claim 7, wherein the caliber of the arc-shaped cover (17) is larger than that of the first tank body (1) and smaller than that of the second tank body (25).
  9. 9. The superconducting niobium-titanium alloy cast tube preparation system as claimed in claim 1, wherein a second coaming (26) is fixedly connected to the bottom of the second tank body (25), the second coaming (26) and the bottom wall of the second tank body (25) form a containing cavity, the first return pipe (22) and the second return pipe (24) collect cleaning liquid removed from the oxygen-free copper cladding tube into the containing cavity, and a circulating pump (27) and a circulating pipe (28) are arranged between the first tank body (1) of the strong pickling area and the second tank body (25) of the first pickling area and between the first tank body (1) of the pickling area and the second tank body (25) of the second pickling area.
  10. 10. The preparation process of the superconducting niobium-titanium alloy cast tube is suitable for the preparation system of the superconducting niobium-titanium alloy cast tube as claimed in any one of claims 1 to 9, and is characterized by comprising the following steps: s100, selecting a hexagonal nut (15) with proper size according to the length and the inner diameter of an oxygen-free copper cladding tube, twisting the hexagonal nut to the fixed height of a screw rod (9), sleeving all the oxygen-free copper cladding tubes after oil removal on all the screw rods (9), abutting the inner wall of the screw rod (9) by utilizing the hexagonal nut (15), enabling the oxygen-free copper cladding Guan Li to be on the upper surface of a sintering net layer (11), and finally connecting a hanging lug (6) with a hanging hook (5); S200, lifting an oxygen-free copper cladding tube by using a telescopic bar (4), moving the oxygen-free copper cladding tube by using a travelling trolley (3) to the interior of a first tank body (1) positioned in a strong pickling area, and lowering the oxygen-free copper cladding tube into the interior of the first tank body (1) by using the telescopic bar (4) to finish a transferring step; s300, repeatedly transferring, namely conveying cold air from the air tap (20) to the interior of a second tank body (25) positioned in the first acid removal area, and blowing away strong acid attached to the inner wall and the outer wall of the oxygen-free copper cladding tube by using the cold air; S400, repeating the transferring step, pickling the oxygen-free copper cladding tube by using weak acid pickling solution in the first tank body (1) of the weak acid pickling area, and blowing away weak acid attached to the inner wall and the outer wall of the oxygen-free copper cladding tube by using cold air of the second tank body (25) in the second acid removal area; s500, repeating the transferring step, soaking the oxygen-free copper cladding tube in the first tank body (1) of the washing area, and cleaning the oxygen-free copper cladding tube by utilizing ultrasonic waves to remove all attached pickling solution; And S600, repeatedly transferring, namely conveying hot air from the air tap (20) to the second tank body (25) in the hot air drying area, blowing away strong acid attached to the inner wall and the outer wall of the oxygen-free copper cladding tube by using the hot air, and drying the strong acid.

Description

Preparation process and preparation system of superconducting niobium-titanium alloy cast tube Technical Field The invention relates to the technical field of superconducting niobium-titanium wire preparation, relates to casting pipe equipment, and in particular relates to a superconducting niobium-titanium alloy casting pipe preparation process and a superconducting niobium-titanium alloy casting pipe preparation system. Background The niobium-titanium superconducting material is used as a low-temperature superconducting material with highest maturity and most widely commercialized application in the prior art, and the wire rod prepared by the niobium-titanium superconducting material is widely applied to generating a high-strength magnetic field and is a core base material of a superconducting magnet in a magnetic resonance imaging system, a nuclear magnetic resonance spectrometer, a particle accelerator and a controllable nuclear fusion experimental device. In the prior art, the conventional preparation process of the niobium-titanium superconducting wire generally comprises the following steps of firstly preparing a niobium-titanium alloy cast ingot and an oxygen-free copper cladding tube, then assembling the cast ingot and the oxygen-free copper cladding tube into a superconducting niobium-titanium alloy cast tube, and finally obtaining the superconducting wire meeting the requirements through multiple passes of plastic processing and heat treatment. Among them, oxygen-free copper is widely used as a stable matrix for superconducting core materials due to its lack of hydrogen embrittlement, high conductivity, excellent workability, weldability, corrosion resistance and low temperature properties, and good compatibility with niobium element. The inner surface of the oxygen-free copper cladding tube is in direct contact with niobium-titanium alloy casting and is in decisive influence on the processing process and the final performance of the superconducting product. Patent application CN115772673A discloses a circulating pickling device and method of a pickling tank, and discloses that' pickling Chi Naan is provided with an upper pickling tank and a lower pickling tank, the interior of the lower pickling tank is divided into a first weak acid area, a second weak acid area, a wire turning area, a medium acid area and a strong acid area through a partition plate, hanging frames are respectively arranged above the upper pickling tank and the lower pickling tank and used for mounting pickling workpieces, a movable rail is used for mounting the hanging frames, a hydraulic cylinder is slidingly connected on the movable rail, the hanging frames are rotationally connected with the bottom of the hydraulic cylinder, an auxiliary transmission plate is arranged between the movable rails, the bottom of the auxiliary transmission plate is provided with a hydraulic cylinder, the bottom of the hydraulic cylinder is rotationally connected with a transfer rod, and the positions of the pickling workpieces are transferred through the transfer rod. When the inner surface of the oxygen-free copper cladding tube is cleaned conventionally, methods such as soaking cleaning or manual pulling scrubbing are mainly adopted, the efficiency is low, and the requirement of preparing the superconducting niobium-titanium alloy cast tube in a large scale cannot be met. In the technical scheme of the patent, although the preparation efficiency can be improved and the requirements are met, the wire workpiece outer surface can be effectively pickled, the pickling cannot be performed on the oxygen-free copper cladding tube with a tubular structure, and the inner wall of the oxygen-free copper cladding tube cannot be effectively treated, so that the method has certain limitation. Disclosure of Invention The invention aims to provide a preparation process of a superconducting niobium-titanium alloy cast tube, which solves the technical problems that in the prior art, an acid cleaning method of an oxygen-free copper cladding tube for preparing the superconducting niobium-titanium alloy cast tube is only suitable for small-batch operation, cannot meet the requirement of batch production and cannot meet the acid cleaning of the oxygen-free copper cladding tube; The invention also aims to provide a superconducting niobium-titanium alloy cast tube preparation system which solves the technical problems that in the prior art, an acid pickling area is incomplete and the acid pickling quality of a product is affected due to the fact that the local position of an oxygen-free copper cladding tube is attached to a clamping fixture. The aim of the invention can be achieved by the following technical scheme: The superconducting niobium-titanium alloy cast tube preparation system comprises a guide rail and a travelling trolley capable of moving along the guide rail, wherein a plurality of working areas are sequentially arranged along the guide rail from an inp