Method and device for generating alloy wire wiegand effect

A technology of wire Wiegand and alloy wire, which is applied in the field of producing the Wiegand effect of alloy wire, can solve the problem of inability to prepare high-amplitude, high-energy sensor products, etc., and achieve the effect of improving sensor performance, performance and energy.

Active Publication Date: 2016-06-01
南京艾驰电子科技有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] The alloy wire produced by the existing preparation process will be limited by the amount of deformation, and it is necessary to find the best coordination between the mechanical properties and electromagnetic properties of the alloy wire, otherwise it will not be possible to prepare high-amplitude, high-energy sensor products

Method used

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  • Method and device for generating alloy wire wiegand effect

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example 1

[0030] The alloy wire has a weight ratio of iron, cobalt and vanadium of 49.1%: 43.1%: 7.8%, and a diameter of 0.28mm. The temperature of the heat treatment device is controlled at 865°C±2°C; the included angle α=168° during deformation processing, and the final state is a spiral shape with a diameter of 16cm. The alloy wire is cut into arcs with a length of 12 mm and packed into ceramic tubes. The sensor made of this material is driven by a symmetrical alternating magnetic field, with a coil of 3-5mT, 5k turns, and an amplitude of 8.0V.

example 2

[0032] The alloy wire has a weight ratio of iron, cobalt and vanadium of 49.1%: 43.1%: 7.8%, and a diameter of 0.5mm. The temperature of the heat treatment device is controlled at 960°C±2°C; the included angle α=155° during deformation processing, and the final state is a spiral shape with a diameter of 18cm. The alloy wire is cut into arcs with a length of 22 mm, and packed into ceramic tubes. The sensor made of this material is driven by a symmetrical alternating magnetic field, with a 3-5mT, 5k-turn coil, and an amplitude of 4.5V. The sensor made of this material is driven by a symmetrical alternating magnetic field, with a coil of 3-5mT, 5k turns, and an amplitude of 50V.

[0033] The structure of a device producing alloy wire Wiegand effect of the present invention is as follows: figure 1 As shown, its composition includes: a feeding tray 1, a speed measuring guide wheel 2, a heat treatment device 3, a pressure guide wheel 4, a traction positioning guide wheel device 5,...

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Abstract

The invention discloses a method and a device for generating an alloy wire wiegand effect. The method includes the steps that an alloy wire which advances at constant speed is subjected to hot-working treatment firstly, then to traction and localization treatment and finally to deformation treatment; and in the deformation treatment process, the alloy wire which is subjected to traction and localization is bent to be in a spiral state. The device comprises a feed plate, a speed measuring guide wheel, pressure guide wheels, a traction and localization guide wheel device and a material receiving plate which the alloy wire passes through in sequence. A high-frequency heating furnace is further disposed between the speed measuring guide wheel and the pressure guide wheels. A deformation stop block is further mounted between the traction and localization guide wheel device and the material receiving plate. According to the method and the device for generating the alloy wire wiegand effect, on the basis of original technologies, a new deformation technology is improved and added, so that the energy of the alloy wire is substantially improved, the amplitude is increased by 300% to 700% and the energy is increased by nearly one order of magnitudes. The alloy wire prepared through the method and the device can improve the performance of a sensor, and the energy provided by the sensor can allow collecting equipment to finish starting and storing functions.

Description

technical field [0001] The invention relates to a method for producing an alloy wire Wiegand effect and a device used in the method. Background technique [0002] Some strong magnetic alloy materials, such as iron-cobalt-vanadium, iron-nickel alloy, etc., will have different magnetic properties due to different processing techniques. The greater the deformation produced by material processing, the higher the coercive force; on the contrary, the deformation The smaller the value, the lower the coercive force. Under proper process conditions, an alloy wire with uniform composition can be processed into a semi-hard magnetic material. [0003] The magnetic domain orientation of semi-hard magnetic materials depends entirely on the external magnetic field. Therefore, under the action of coercive force, the magnetic domain orientation of the material will change with the change of the external magnetic field. The force magnetic effect refers to a phenomenon in which a metal defo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21F3/02B21C51/00C21D8/06
CPCB21C51/00B21F3/02C21D8/06
Inventor 张年容
Owner 南京艾驰电子科技有限公司
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