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Alloy wire with wiedemann effect and preparation method thereof

An alloy wire and effect technology, applied in the direction of temperature control, can solve the problems of small Wiedemann effect, weak signal, low working temperature, etc., and achieve the effect of uniform structure and performance, strong waveguide signal, and increased working temperature range.

Active Publication Date: 2012-12-19
BEIJING MAGORIENTAL MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide an alloy wire with Wiedemann effect, to overcome the shortcomings of existing waveguide wires, such as small Wiedemann effect, weak signal and low working temperature

Method used

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  • Alloy wire with wiedemann effect and preparation method thereof
  • Alloy wire with wiedemann effect and preparation method thereof
  • Alloy wire with wiedemann effect and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Smelting alloy

[0033] Put 43.20wt% of Ni with a purity of 99.99%, 0.05wt% of Re with a purity of 99.99%, and the rest of Fe with a purity of 99.99% into a 10Kg vacuum induction furnace; the vacuum degree is 1Pa, and argon gas is introduced to start smelting the alloy , the smelting time is 1 hour; the smelting is finished and cast into an alloy rod with a diameter (Φ) of 80mm.

[0034] (2) Remove the surface layer

[0035] Some defects (mainly defects such as blisters and burrs) are prone to appear on the surface of the alloy rod after step (1), which can be turned on a lathe to make the surface smooth, and the thickness of the surface layer removed is 4mm.

[0036] The purpose of eliminating surface defects is to prevent the alloy from cracking or breaking during forging and drawing, and to ensure the uniformity of the structure of the alloy wire.

[0037] (3) Hot forging and hot rolling

[0038] The alloy rod after (2) is sent into the heating furnace and hea...

Embodiment 2

[0051] (1) Smelting alloy

[0052] The composition content of the selected alloy is: 43.18wt% Ni with a purity of 99.99%, 0.02wt% Re with a purity of 99.99%, and the remainder Fe with a purity of 99.99%. It is smelted in a vacuum induction furnace; the vacuum degree is 1Pa, and the smelting time is 1 hour; after smelting, it is poured into a Φ80mm alloy rod.

[0053] (2) Remove the surface layer

[0054] The surface layer removal thickness is 3mm.

[0055] (3) Hot forging and hot rolling

[0056] The alloy rod after (2) is sent into the heating furnace and heated to 1210°C, and then forged. After forging, it becomes a 40×40mm square billet; Carry out hot rolling, control the final rolling temperature at 970°C, and finally roll into a Φ14mm wire rod.

[0057] (4) cold drawn

[0058] The wire rod rolled in the process (3) is subjected to softening annealing at 850°C for 200 minutes; then it is pickled and washed with water; it is drawn by a drawing machine, and the total dr...

Embodiment 3

[0064] (1) Smelting alloy

[0065] The composition content of the selected alloy is: 43.22wt% Ni with a purity of 99.99%, 1.4wt% Re with a purity of 99.99%, and the remainder Fe with a purity of 99.99%. It is smelted in a vacuum induction furnace; the vacuum degree is 1Pa, and the smelting time is 1 hour; after smelting, it is poured into a Φ80mm alloy rod.

[0066] (2) Remove the surface layer

[0067] The surface layer removal thickness is 5mm.

[0068] (3) Hot forging and hot rolling

[0069] The alloy rod after (2) is sent into the heating furnace and heated to 1250°C, and then forged. After forging, it becomes a 40×40mm square billet; Carry out hot rolling, control the final rolling temperature at 1020°C, and finally roll into a Φ14mm wire rod.

[0070] (4) cold drawn

[0071] The wire rod rolled in the process (3) is softened and annealed at 930°C, and the softening and annealing time is 250min; then it is pickled and washed with water; Afterwards, intermediate ann...

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Abstract

The invention relates to an alloy wire with wiedemann effect and a preparation method thereof. The preparation method of the alloy wire comprises the following steps of: mixing the following alloy wire raw materials in percentage by mass: 41 to 44 percent of nickel, 0.01 to 1.50 percent of rhenium and the balance of iron, loading the raw material components into a vacuum smelting furnace, and vacuumizing the smelting furnace to smelt and cast ingots; performing forging and hot rolling on the ingots to form coil rods; performing softening annealing, starting cold drawing, and drawing the coil rods into thin wires with the diameter between 0.5 and 1.0mm for multiple times; and performing vacuum annealing after drawing to make the alloy wire meet the optimal use performance. The alloy wire prepared by the method has greater wiedemann effect and higher Curie point. The method solves the problems of weak signals and low working temperature of waveguide wires for sensors and provides base materials for producing the sensors with high resolution, wide range and high temperature.

Description

technical field [0001] The invention relates to an alloy wire with Wiedemann effect and a preparation method thereof. Background technique [0002] When a ferromagnetic material is subjected to both an axial magnetic field and a circumferential magnetic field, it will cause the material to twist. This phenomenon is called the Wiedemann effect. The Wiedemann effect is a magnetomechanical effect that reflects materials under the action of a magnetic field. Materials with Wiedemann effect can be used to manufacture various sensors, and are widely used in many fields such as national defense, aerospace, communication, machinery industry, etc., and have important application value. [0003] Many industrial sensors and displacement sensors use waveguide wires with Wiedemann effect as sensitive materials. The working principle of this type of sensor is to determine the position of the wave source by measuring the transmission time of the torsional wave on the waveguide wire, ther...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/08C21D8/06C22C33/04C21D1/32C21D1/26C21D1/773B21B37/74
Inventor 高学绪夏天张茂才周寿增
Owner BEIJING MAGORIENTAL MATERIALS TECH CO LTD
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