Continuous training method and continuous training device for shape memory alloy wire

A technology of memory alloy wire and training device, which is applied in the field of material processing, can solve the problems that there is no industrialized promotion training method for shape memory alloys, so as to avoid excessive or too small training stress, avoid insufficient or excessive training, and facilitate industrialization. The effect of promotion

Inactive Publication Date: 2020-08-07
常州艾易泰合金科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present application provides a continuous training method and a continuous training device for shape memory alloy wires to

Method used

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  • Continuous training method and continuous training device for shape memory alloy wire
  • Continuous training method and continuous training device for shape memory alloy wire
  • Continuous training method and continuous training device for shape memory alloy wire

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0046] Example 1:

[0047] In specific implementation, such as figure 1 As shown, this application first provides a continuous training device for a shape memory alloy wire, which includes a fixed pulley 2 and a wire discharge system; the wire discharge system includes a wire pulley 3, a counterweight tension rod 4, and infrared displacement monitoring Device 6; the height of the wire pulley 3 is higher than the height of the fixed pulley 2, the fixed pulley 2 is used to introduce the shape memory alloy wire, the wire pulley 3 is used to derive the shape memory alloy wire to form a A device that allows the shape memory alloy wire to be continuously fed in and out; the fixed pulley 2 and the wire exit pulley 3 are both provided with a fixed structure, and the fixed structure is used to connect the shape memory alloy between the fixed pulley 2 and the wire exit pulley 3 The wire is fixed to ensure that the length of the shape memory alloy wire between the trained fixed pulley 2 and...

Example Embodiment

[0052] Example 2:

[0053] In specific implementation, such as figure 1 As shown, the continuous training device using the shape memory alloy wire as described in Example 1, selects the shape memory alloy wire with a diameter of 25 microns, the nickel content is 54.5%, and the rest is titanium. The average crystal of the wire is The grain size is 35 nanometers. The shape memory alloy wire is passed around the wire feeding pulley 1, the fixed pulley 2 and the wire outlet pulley 3 and straightened. The fixed structure on the fixed pulley 2 and the wire outlet pulley 3 will be within the electric pulse range The two ends of the shape memory alloy wire 8 are respectively fixed on the tangent points between the shape memory alloy wire 8 and the movable pulley and the wire exit pulley 3. At this time, the length of the shape memory alloy wire 8 in the electric pulse range is L, which is the initial state. By adjusting the weight of the first counterweight 5, the training load of the sh...

Example Embodiment

[0055] Example 3:

[0056] In specific implementation, such as figure 1 As shown, using the continuous training device of the shape memory alloy wire as described in Example 1, the shape memory alloy wire with a diameter of 30 microns is selected, the nickel content is 54.7%, and the rest is titanium. The average crystal of the wire The grain size is 50 nanometers. The shape memory alloy wire is passed around the wire feeding pulley 1, the fixed pulley 2 and the wire outlet pulley 3 and straightened. The fixed structure on the fixed pulley 2 and the wire outlet pulley 3 will be within the electric pulse range The two ends of the shape memory alloy wire 8 are respectively fixed on the tangent points between the shape memory alloy wire 8 and the movable pulley and the wire exit pulley 3. At this time, the length of the shape memory alloy wire 8 in the electric pulse range is L, which is the initial state. By adjusting the weight of the first counterweight 5, the training load of th...

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Abstract

The invention discloses a continuous training method and a continuous training device for a shape memory alloy wire. The continuous training device is composed of a fixed pulley and a wire dischargingpulley. The shape memory alloy wire can be sequentially fixed between the fixed pulley and the wire discharging pulley for training. Fixed stress is applied to the part, fixed between the fixed pulley and the wire discharging pulley, of the shape memory alloy wire, the shape memory alloy wire is located in the load of the specific range, pulse current is conducted for training the wire, and evolution of the strain of the shape memory alloy wire in the training process is monitored till strain is stable, and then training is finished. According to the continuous training method and the continuous training device, through control over the fixed stress and monitoring of strain, the purpose of monitoring the training process is achieved macroscopically; and a mark joint for training ending isclearly provided for the first time. The continuous training device for the shape memory alloy wire is simple in structure, high in operability and easy to be industrially popularized.

Description

technical field [0001] The invention relates to the field of material processing, in particular to a continuous training method and a continuous training device for shape memory alloy wires. Background technique [0002] Shape memory alloy is a smart material with multiple functions, including shape memory effect, superelasticity, shock absorption and noise reduction, and strain sensing. It has a wide range of applications in medical equipment, aerospace, and robotics. Since the unique functions of shape memory alloys come from thermoelastic martensitic transformation and inverse transformation, the functional mechanical behavior of the alloy is closely related to the crystallographic path of martensitic transformation. In actual operation, researchers often optimize the crystallographic path of martensitic transformation through some thermomechanical treatments, so as to ensure the macroscopic strain stability of shape memory alloys. [0003] Thermomechanical means to opti...

Claims

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Application Information

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IPC IPC(8): C22F1/00C22F1/10
CPCC22F1/006C22F1/10
Inventor 占静玲丁希可蔡正午
Owner 常州艾易泰合金科技有限公司
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