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Permanent magnetic steel for magnetic latching relay and preparation method of permanent magnetic steel

A technology of magnetic latching relays and permanent magnets, applied in electromagnetic relays, electromagnetic relay details, relays, etc., can solve the problems of undiscovered permanent magnet magnet steel patents and literature reports, etc., and achieve light weight, reduced addition ratio, and high comprehensiveness The effect of magnetic properties

Inactive Publication Date: 2018-09-14
GANZHOU FORTUNE ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As one of the core components of the latching relay, there are no relevant patents and literature reports on permanent magnets specially designed and developed for the latching relay.

Method used

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  • Permanent magnetic steel for magnetic latching relay and preparation method of permanent magnetic steel
  • Permanent magnetic steel for magnetic latching relay and preparation method of permanent magnetic steel
  • Permanent magnetic steel for magnetic latching relay and preparation method of permanent magnetic steel

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Embodiment Construction

[0019] The present invention is further described below in conjunction with table:

[0020]

[0021]

[0022]

[0023]

[0024] in:

[0025] 1. Br is the residual magnetism, Hcj is the coercive force, (BH)max is the maximum magnetic energy product, all of which are the main technical indicators of the magnetic properties of the magnet.

[0026]2. PCT (High Pressure Accelerated Corrosion Test) test is carried out with reference to GB∕T 2423.40-2013 "Environmental Test Part 2: Test Method Test Cx: Unsaturated High Pressure Steam Constant Humidity and Heat", and the test conditions are: 130°C, 85%RH, 240h , the sample size is 10mm*10mm*10mm, the number of samples is 15, and the unit weight of each sample is weighed before the test. 1 , and measure the size of the product, calculate the surface area S of the sample, clean the corrosion on the surface of the sample with flannelette after the test, and test the unit weight m again 2 , weightlessness = (m 1 -m 2 ) / S, ...

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PUM

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Abstract

The invention provides permanent magnetic steel for a magnetic latching relay and preparation method of the permanent magnetic steel. The permanent magnetic steel alloy comprises, by weight, 29-33 parts of (NdalphaRE1-alpha), 65.9-70.2 parts of (FebetaM1-beta) and 0.8-1.1 parts of B, wherein RE is optional one or more of La, Ce, Pr, Gd, Tb, Dy, Ho, Y and Sc, M is optional one or more of Co, Mo, V,Ti, Hf, Cu, Al, Nb, Zr and Ga, 50%< / =alpha< / =100%, and 90%< / =beta< / =100%. The permanent magnetic steel has the advantages that the permanent magnetic steel specially developed for the magnetic latching relay is free of power consumption in working state, small in size, lightweight, stable and reliable; the permanent magnetic steel is free of power consumption in the working state due to the factthat the permanent magnetic steel does not need to use coil energization to generate a magnetic field so as to keep a setting and resetting state.

Description

technical field [0001] The invention relates to the field of magnetic latching relays, in particular to a permanent magnet for magnetic latching relays and a preparation method thereof. Background technique [0002] Relay is an automatic switching element with isolation function. It is widely used in remote control, telemetry, communication, automatic control, mechatronics and power electronic equipment. It is one of the most important control elements. The magnetic latching relay is a new type of relay that has emerged in recent years, and it is also an automatic switch. Like other electromagnetic relays, it can automatically switch on and off the circuit. The difference is that it works through electromagnetic, permanent magnet system locking structure, and adopts instantaneous pulse drive. When the contact is closed or released, the state is locked through the permanent magnet system. When it is not driven, the working coil remains in the power-off state. Therefore, it ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F1/057H01F41/02H01H50/36
CPCH01F1/0577H01F41/0266H01H50/36
Inventor 戚植奇喻玺杜君峰庞再升王亮亮刘滨蔡小勇钟长传剧智华钟康
Owner GANZHOU FORTUNE ELECTRONICS