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A kind of composite semi-hard magnetic material and preparation method thereof

A semi-hard magnetic and strip technology, applied in the direction of magnetic materials, metal material coating technology, magnetic objects, etc., can solve the problems of double-layer patch, interference with normal processes, easy adhesion, etc., to improve weather resistance stability, improve The effect of antioxidant capacity

Active Publication Date: 2018-08-24
广东齐达科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantages of pure metal non-composite semi-hard magnetic materials are also obvious, including: (1) burrs are generated during the manufacturing process, which are easy to stick when stacked, causing pauses and failures in the production line; (2) semi-hard magnetic sheets The magnetic attraction effect between them is obvious, and it is easy to cause double-layer patching when stacking, which interferes with the normal process and reduces production efficiency; (3) The magnetic attraction effect between the amorphous resonator sheet is obvious, resulting in the inability to manufacture single-cavity amorphous Acoustomagnetic sensor; (4) The material is easy to oxidize, which affects the performance and stability of the acoustomagnetic sensor

Method used

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  • A kind of composite semi-hard magnetic material and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0030] like figure 1 As shown, a composite semi-hard magnetic material according to an embodiment of the present invention includes a base layer 1 made of a semi-hard magnetic material. The outer surface of the base layer 1 is coated with an anti-oxidation layer 2 and an insulating layer 3. Between the base layer 1 and the insulating layer 3. Coating the anti-oxidation layer 2 on the surface of the semi-hard magnetic material greatly improves the anti-oxidation ability of the material itself, ensuring that the final acoustomagnetic sensor can maintain the stability of the semi-hard magnetic state in the most severe environment; The semi-hard magnetic material with the anti-oxidation layer 2 is insulated to effectively reduce the magnetic attraction between the semi-hard magnet and the semi-hard magnet and when the semi-hard magnet is adjacent to the amorphous resonant sheet.

[0031] Preferably, the semi-hard magnetic material is Fe-Ni-Al alloy, that is, the semi-hard magneti...

Embodiment 2

[0043] A kind of composite semi-hard magnetic material of this embodiment, its difference with the composite semi-hard magnetic material described in embodiment 1 is: described semi-hard magnetic material is Fe-Ni-Al-Ti alloy, namely semi-hard magnetic material is made of Fe a Ni b al c Ti dComposition of alloy composition, in which, a, b, c are atomic percentages, a=78, b=20, c=1, d=1; the phosphating layer is composed of zinc-based phosphating solution, and its pH value is 2.5; organic The coating consists of a polyurethane topcoat; the anti-oxidation layer 2 has a thickness of 5 μm, and the insulating layer 3 has a thickness of 5 μm.

[0044] The preparation method of the composite semi-hard magnetic material described in this embodiment is:

[0045] (1) Master alloy smelting: smelting by vacuum smelting method, putting alloy components into a crucible, heating to a temperature of 1650°C, refining for 10 minutes after the alloy components are melted, and pouring into st...

Embodiment 3

[0052] A kind of composite semi-hard magnetic material of this embodiment, its difference with the composite semi-hard magnetic material described in embodiment 1 is: described semi-hard magnetic material is Fe-Ni-Al-Ti alloy, namely semi-hard magnetic material is made of Fe a Ni b al c Ti d Composition of alloy composition, where a, b, c are atomic percentages, a=83, b=15, c=1.5, d=0.5; the phosphating layer is composed of manganese-based phosphating solution, and its pH value is 3; organic The coating is made of phenolic resin; the thickness of the anti-oxidation layer 2 is 10 μm, and the thickness of the insulating layer 3 is 15 μm.

[0053] The preparation method of the composite semi-hard magnetic material described in this embodiment is:

[0054] (1) Master alloy smelting: smelting by vacuum smelting method, putting alloy components into a crucible, heating to a temperature of 1550°C, refining for 15 minutes after the alloy components are melted, and pouring into ste...

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Abstract

The invention relates to a composite half-hard magnetic material and a preparation method thereof. The composite half-hard magnetic material comprises a base layer consisting of half-hard magnetic materials, wherein the outer surface of the base layer is coated with an anti-oxidation layer and an insulation layer; and the anti-oxidation layer is located between the base layer and the insulation layer. The preparation method of the composite half-hard magnetic material comprises the steps of firstly preparing half-hard magnetic mother alloy by virtue of vacuum melting, then preparing panels and strips respectively by virtue of hot rolling and cold rolling, carrying out thermal processing on the strips, and finally compositing the anti-oxidation layer and the insulation layer on two surfaces. The composite half-hard magnetic material has the anti-oxidation and anti-magnetism performance.

Description

technical field [0001] The invention relates to a composite semi-hard magnetic material and a preparation method thereof, in particular to an anti-oxidation and anti-magnetic attraction composite semi-hard magnetic material and a preparation method thereof. Background technique [0002] The bias sheet is a key component of the acoustic-magnetic sensor, and the bias sheet material can be divided into hard magnetic (H c >125Oe), semi-hard magnetic (12.5Oe<H c <125Oe) and soft magnetic alloy (H c <12.5Oe). The semi-hard magnetic material is the most widely used as the bias plate material of the acoustic magnetic sensor. [0003] The R&D and production of semi-hard magnetic materials have mainly experienced two changes. The first was in the 1980s, when semi-hard magnetic materials were mainly made of rolled metal materials, which were low in cost and relatively unstable in performance; the second The second is that in the 1990s, it was mainly manufactured by roll...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F1/047C23C28/00
Inventor 王希楠涂海情
Owner 广东齐达科技有限公司
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