A device and method for customizing large-diameter shape memory alloy strands in a laboratory
A memory alloy, large-diameter technology, used in manufacturing tools, process efficiency improvement, furnaces, etc., can solve problems such as limitations, lack of customized functions, lack of development of large-diameter SMA stranded wire products, etc., to achieve convenient operation and simple structure. Effect
Active Publication Date: 2022-07-01
SOUTHEAST UNIV
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Problems solved by technology
[0003] However, at present, the industrialization of Fe-SMA in China is not yet mature, and the products are still limited to the laboratory scale. They are mainly small-diameter wires, small-diameter stranded wires and smooth round rods, and there is a lack of large-diameter SMA stranded wires for the civil engineering field. product development
The process of twisting large-diameter strands is obviously different from that of small-diameter strands. At present, the production of large-diameter ordinary prestressed steel strands used in civil engineering construction relies on large-scale steel strand manufacturers and lacks customization functions.
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[0036] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, and only illustrate the basic structure of the present invention in a schematic manner, so they only show the structures related to the present invention.
[0037] In the current development and improvement process of SMA stranded wire products for large-diameter civil engineering, it is necessary to carry out multi-parameter, multi-batch and a small amount of product customization optimization research. However, the current production lines are all large-scale steel strand production lines. , lack of customization function and high cost, so the present application aims to provide a device for customizing large-diameter shape memory alloy strands in the laboratory.
[0038] The application mainly includes two U-shaped guide rails 3 installed parallel to the ground. The grooves of the U-shaped guide rails 3 are a...
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The invention relates to a device and a method for customizing large-diameter shape memory alloy strands in a laboratory. The device comprises two U-shaped guide rails installed parallel to the ground, and the grooves of the U-shaped guide rails are arranged oppositely. A space is formed between the two grooves; a torsion motor and a stretching motor are installed at both ends of the U-shaped guide rail; a high-frequency induction heating coil and a stretching device are respectively set in the space formed between the two grooves, and the high-frequency induction heating coil, The stretching device is slidably connected to the U-shaped guide rail through the moving device, and the high-frequency induction heating coil is close to the torsion motor, and the stretching device is connected to the stretching motor; the alloy wire to be twisted passes through the torsion motor in turn, and the high-frequency induction heating The coil is then connected with the stretching device; the invention can customize the large-diameter shape memory alloy stranded wire in the laboratory, and can provide support for scientific research personnel to customize multiple parameters, multiple batches and a small amount of product optimization research.
Description
technical field [0001] The invention relates to a device and a method for customizing large-diameter shape memory alloy strands in a laboratory, and belongs to the technical field of house and bridge structures. Background technique [0002] Shape memory alloys (SMAs) are a new class of alloy materials with many special physical and mechanical properties that are not found in general metal materials. For example, shape memory effect and superelasticity effect, etc. At present, SMA has been widely used in biomedical, aerospace, mechatronics and other industries. In the field of structural technology such as houses and bridges, shape memory alloys have been used in a small amount in the field of seismic performance improvement of engineering structures by using their superelasticity effect, and certain beneficial effects have been achieved. However, the relatively mature nickel-titanium-based shape memory alloy (Niti-SMA) is extremely expensive, and faces the bottleneck of l...
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IPC IPC(8): B21F7/00C21D9/52C21D1/10C21D1/18
CPCB21F7/00C21D9/525C21D1/10C21D1/18Y02P10/25
Inventor 董志强朱虹吴刚
Owner SOUTHEAST UNIV