Method for manufacturing steel strip for central cooling tube and method for winding cooling tube
A manufacturing method and technology for steel strips, which are applied in the field of superconductivity, can solve the problems of failing to meet the control requirements of the central cooling tube winding and poor passability of rectangular steel strips, and achieve the effects of perfect appearance, uniform pitch and wide application.
Active Publication Date: 2012-12-19
INST OF PLASMA PHYSICS CHINESE ACAD OF SCI +2
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[0004] The object of the present invention is to provide a method for manufacturing a steel strip for a central cooling pipe and a method for winding a cooling pipe, so as to solve the problem that the rectangular steel strip for a central cooling pipe manufactured by the prior art has poor passability and cannot reach the winding control of the central cooling pipe Requirements, and obtain a central cooling tube with perfect appearance, uniform outer diameter and pitch, no side reverse curve on the surface, and large continuous length
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[0032] The central cooling pipe is wound by a stainless steel strip with a rectangular cross-section, and the cross-sectional structure of the steel strip is as follows: figure 1 shown. The structure of the central cooling pipe is as follows figure 2 shown. In order to obtain high-quality finished central cooling pipes, it is necessary to rationally design the production process of the rectangular steel strip, so that the rectangular steel strip has good passability, that is, the thickness, width, and HV hardness are uniform, so that the later winding process of the central cooling pipe is stable and easy to control .
[0033] Such as image 3 shown. In the manufacture of rectangular steel strips, the primary annealing makes the φ1 raw material steel wire into a fully soft state; the primary cold drawing makes the φ1 raw material steel wire into a φ2 steel wire, and the cross section shrinks; the secondary cold drawing makes the φ2 steel wire into a φ3 steel wire, and the...
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The invention discloses a method for manufacturing a steel strip for a central cooling tube and a method for winding the cooling tube, wherein the method for manufacturing a steel strip for a central cooling tube comprises steps of first annealing, twice cold drawing, second annealing, acid washing, third annealing, twice cold rolling, third annealing and twice cold rolling again. The method for winding the cooling tube comprises the steps of the installation and the correction of a strip guiding wheel, the installation and the correction of a winding tooling, the installation and the correction of a tooling for measuring the external diameter of the cooling tube, the installation and the correction of a synchronous back twisting device, pitch correction, winding and cleaning. The rectangular steel strip manufactured in the invention has fine conformity, and the central cooling tube manufactured by winding the rectangular steel strip has perfect appearance; the surface of the central cooling tube has no lateral reverse curve, and the external diameter and the pitch of the central cooling tube are uniform to fulfill various kinds of tolerance requirements in practical use; the central cooling tube has great continuous winding length, has a wide range of application in the manufacture of a fusion reactor superconductor in the future, and already has practical application especially in the R&D (Research & Development) and preproduction phases of the superconductor in ITER (International Thermonuclear Experimental Reactor) which is the cooperation of 7 parties at present.
Description
technical field [0001] The invention relates to the field of superconductivity, in particular to a central cooling pipe for a superconducting sheath conductor, in particular to a method for manufacturing a steel strip for the central cooling pipe and a winding method for the cooling pipe. Background technique [0002] Central Cooling Spiral Tube (Central Cooling Spiral Tube) is the central channel of superconducting sleeve conductor (Cable In Conduit Conductor, referred to as CICC), such as figure 2 As shown in , it is used for the heat exchange between liquid helium in the channel and the superconducting cable and the release of the huge internal pressure of the superconducting conductor when it quenches. It is widely used in the construction of superconducting confinement magnets of various Tokamak fusion reactors. In view of the stringent requirements of superconducting cable twisting, superconducting conductor threading and conductor thermal performance, the central cool...
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IPC IPC(8): B23P15/00B21D53/06B21C47/02
Inventor 韩奇阳武玉邵耀荣单长茂
Owner INST OF PLASMA PHYSICS CHINESE ACAD OF SCI
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