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Magnetic conductive material for electromagnetic relay and preparation method thereof

A technology of electromagnetic relays and magnetic materials, which is applied in the field of metallurgy, can solve the problems of inability to meet the requirements of electromagnetic relays, unstable coercive force of magnetic materials, and poor comprehensive performance.

Active Publication Date: 2020-07-07
DONGGUAN KELEE STEEL WIRE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to provide a preparation method of a magnetically conductive material for an electromagnetic relay, aiming at solving the problem of unstable coercive force, poor overall performance, and inability to meet the magnetically conductive material used in an electromagnetic relay in the prior art. Magnetic performance requirements

Method used

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  • Magnetic conductive material for electromagnetic relay and preparation method thereof

Examples

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preparation example Construction

[0020] Example of the present invention provides a kind of preparation method of the magnetic conduction material that electromagnetic relay is used, comprises the steps:

[0021] S01. Choose CH1T material as the base material;

[0022] S02. Perform drawing treatment on the base material, wherein the total compression rate of drawing is ≥80%, and the partial compression rate is ≤10%, to obtain a preformed wire;

[0023] S03. Perform cold heading forming treatment and recrystallization annealing treatment on the preformed wire, wherein the temperature of the recrystallization annealing treatment is 850-900° C., and the treatment time is 4-6 hours.

[0024] Specifically, in the above step S01, the CH1T material is selected as the base material. The material belongs to industrial pure iron. The product has the advantages of stable composition, low harmful elements, high steel purity, high surface quality, high geometric precision, and good electromagnetic performance. At the sam...

Embodiment 1

[0038] The CH1T material is selected as the base material, and the total weight of the base material is 100%, including the following element components in the following weight percentages: C content is 0.005%; P content is 0.020%; S content is 0.020%; Ti content is 0.06%; the shape of the selected base metal is elliptical, and the ellipticity is 0.10mm; the grain size is 8 grades, and the non-metallic inclusions are 0.5 grades.

[0039]The preparation method comprises the following steps: selecting the above-mentioned CH1T material as the base material; drawing the base material, wherein the total compression rate of drawing is 80%, the partial compression rate is 6%, and the wire drawing speed is 10m / s, and the obtained Preformed wire rod: cold heading forming treatment is performed on the preformed wire rod, the cold heading speed is 150 per minute, and then recrystallization annealing treatment is performed, and the annealing treatment is carried out in a methanol atmospher...

Embodiment 2

[0041] The CH1T material is selected as the base material, and the total weight of the base material is 100%, including the following element components in the following weight percentages: C content is 0.008%; P content is 0.010%; S content is 0.010%; Ti content is 0.08%; the shape of the selected base metal is ellipse, and the ellipticity is 0.08mm; the grain size is 9 grades, and the non-metallic inclusions are 0.4 grades.

[0042] The preparation method includes the following steps: selecting the above-mentioned CH1T material as the base material; drawing the base material, wherein the total compression rate of drawing is 85%, the partial compression rate is 8%, and the wire drawing speed is 11m / s, and the obtained Preformed wire rod: cold heading forming treatment is carried out on the preformed wire rod, the cold heading speed is 180 per minute, and then recrystallization annealing treatment is carried out, and the annealing treatment is carried out in a methanol atmosphe...

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Abstract

The invention provides a preparation method of a magnetic conductive material for an electromagnetic relay, which is characterized by comprising the following steps: selecting a CH1T material as a base material and performing drawing treatment on the base material. wherein the total drawing compression ratio is larger than or equal to 80% and the partial compression ratio is smaller than or equalto 10%, thus preparing a preformed wire; and performing cold heading forming treatment and recrystallization annealing treatment on the preformed wire, wherein the temperature of recrystallization annealing treatment ranges from 850 DEG C to 900 DEG C, and the treatment time ranges from 4 hours to 6 hours. The preparation method is simple in process and convenient to manufacture, the obtained magnetic conductive material is good in comprehensive performance, the average grain size is 10-11 grades, the grain size is uniform and equiaxial, and mixed crystals are avoided; in addition, the alloy has low tensile strength, low hardness and low coercive force, and is suitable for subsequent product processing and molding.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a magnetically conductive material for an electromagnetic relay and a preparation method thereof. Background technique [0002] Electromagnetic relay is a kind of automatic motion electrical appliance. The electromagnetic relay has the function of converting the coil current into the electromagnetic attraction that acts on the movable parts, so that the armature moves to drive the contact action, and completes the automatic opening or closing of the circuit. Therefore, it is widely used in industrial automation, power system protection, power distribution system and other automation Higher fields are widely used. [0003] my country's electromagnetic relay industry started late, but developed rapidly. In the past two decades, the sales volume of my country's relay industry has increased from 384 million yuan in 1988 to 16.88 billion yuan in 2013, an increase of 43.96 times, ...

Claims

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Application Information

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IPC IPC(8): H01H49/00H01F41/00C21D1/26C21D8/06B21C37/04
CPCH01H49/00H01F41/00C21D1/26C21D8/065B21C37/045
Inventor 王斯华陈文学肖杰
Owner DONGGUAN KELEE STEEL WIRE
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