Preparation method of high-strength magnetically soft alloy bar

A technology of soft magnetic alloys and alloy rods, which is applied in the fields of magnetic materials, inductance/transformer/magnet manufacturing, magnetic objects, etc., can solve the problems of limited application range, poor processing performance, and high price, and achieve low preparation cost, Stable magnetic properties and good machinability

Active Publication Date: 2021-10-22
西安钢研功能材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The 1J22 alloy also has disadvantages such as high price, easy oxidation, poor processability, and insufficient strength, which limit its use to a certain extent.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0044] A method for preparing a high-strength soft magnetic alloy rod, comprising the following operations:

[0045] 1) Vacuum melting:

[0046] Prepare raw materials according to the smelting requirements of soft magnetic alloy 1J22MV, in terms of mass percentage, including C≤0.04%, Si≤0.30%, Mn≤0.30%, P≤0.020%, S≤0.020%, Cu≤0.20%, Ni≤0.50 %, Co is 48.0~51.0%, V is 1.50~2.10%, Mo is 0.1~0.2%, and Fe is the balance;

[0047] Put the pure iron, cobalt sheet, vanadium iron and molybdenum strips in the raw material into the intermediate frequency vacuum induction furnace for smelting;

[0048] Vacuumize the vacuum induction furnace to ≤133Pa after closing the furnace, power on with low power (50~70kw) for preheating; when the vacuum degree is ≤0.66Pa, increase the power (120~160kw) to quickly chemicalize the material, and the splashing during the materialization process occurs in time Reduce the power (80~100kw); Chemical time: 1.5~2 hours;

[0049] After the material is heate...

Embodiment 1

[0076] A method for preparing a high-strength soft magnetic alloy rod, comprising the following operations:

[0077] 1) Vacuum melting:

[0078] According to the requirements of smelting, weigh the raw materials according to the requirements, in terms of mass percentage, including C≤0.04%, Si≤0.30%, Mn≤0.30%, P≤0.020%, S≤0.020%, Cu≤0.20%, Ni ≤0.50%, Co is 48.5~50.0%, V is 1.90~2.10%, Mo is 0.1~0.15%, Fe is the balance;

[0079] In the weighed raw materials, first put the pure iron into the bottom of the crucible and put it in a flat layer, and put the rest of the pure iron into the surrounding and upper middle of the crucible; then put the Co sheet into the upper middle of the crucible; finally put the high-vanadium iron and Mo The upper part of the crucible; put it into an intermediate frequency vacuum induction furnace for melting;

[0080] After the furnace is vacuumed ≤ 133Pa, low power (50~70kw) power supply is used for preheating. When the vacuum degree is ≤ 0.66Pa, th...

Embodiment 2

[0101] A method for preparing a high-strength soft magnetic alloy rod, comprising the following operations:

[0102] 1) Vacuum melting:

[0103] According to the requirements of smelting, weigh the raw materials according to the requirements, in terms of mass percentage, including C≤0.04%, Si≤0.30%, Mn≤0.30%, P≤0.020%, S≤0.020%, Cu≤0.20%, Ni ≤0.50%, Co is 50.0~51.0%, V is 2.00~2.10%, Mo is 0.15~0.2%, Fe is the balance;

[0104] In the weighed raw materials, first put the pure iron into the bottom of the crucible and put it in a flat layer, and the remaining pure iron into the crucible around and the upper middle; then put the Co sheet into the upper middle of the crucible; finally put the high-vanadium iron and Mo bars into the The upper part of the crucible; put it into an intermediate frequency vacuum induction furnace for melting;

[0105] After the furnace is vacuumed ≤ 133Pa, low power (50kw) power supply is used for preheating. When the vacuum degree is ≤ 0.66Pa, the p...

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Abstract

The invention discloses a preparation method of a high-strength magnetically soft alloy bar, wherein a high-strength magnetically soft alloy is prepared by optimizing chemical components and a process, and the high-strength magnetically soft alloy bar comprises the following components in percentage by mass: less than or equal to 0.04% of C, less than or equal to 0.30% of Si, less than or equal to 0.30% of Mn, less than or equal to 0.020% of P, less than or equal to 0.020% of S, less than or equal to 0.20% of Cu, less than or equal to 0.50% of Ni, 48.0-51.0% of Co, 1.80-2.10% of V, 0.1-0.2% of Mo and the balance of Fe. The preparation process comprises the steps of vacuum melting, alloy ingot casting, forging cogging, finished product hot rolling and solution treatment. According to the invention, the tensile strength of the prepared high-strength magnetically soft alloy bar 1J22MV is larger than 500 MPa, the yield strength is greater than or equal to 250MPa, B800 is greater than or equal to 1.8 T, B2400 is greater than or equal to 2.1 T, B4000 is greater than or equal to 2.15 T, B8000 is greater than or equal to 2.2 T, the coercive force Hc is less than or equal to 144A / m, the Curie point is 980 DEG C, and the saturation magnetostriction coefficient (10<-6>) is 60-100.

Description

technical field [0001] The invention belongs to the technical field of special material smelting, relates to the preparation of soft magnetic alloys, in particular to a method for preparing high-strength soft magnetic alloy rods. Background technique [0002] 1J22 is an iron-cobalt-vanadium soft magnetic alloy with high saturation magnetic induction, which has the highest saturation magnetic induction (Bs=2.45T) and the largest saturation magnetostriction coefficient (60~100×10 -6 ), the Curie point is also very high (980°C), and it is the soft magnetic alloy with the highest Curie point. Due to the saturation magnetic induction (0.4μΩ·m), it is not suitable for use at high frequencies. By adding 0.8-1.8% V element, the cold working plasticity of the alloy is greatly improved, but the addition of V reduces the magnetic properties. [0003] Due to the above-mentioned characteristics of 1J22 alloy, it is used in ferromagnetic components that require high Bs (magnetic inducti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F41/00H01F1/147C22C33/06C22C38/02C22C38/04C22C38/16C22C38/10C22C38/08C22C38/12C22C19/07C22C1/03C21D8/12B21C37/04
CPCH01F41/00H01F1/147C22C33/06C22C38/02C22C38/04C22C38/16C22C38/105C22C19/07C22C1/03C22C38/12C21D8/12C21D8/1222C21D8/1261B21C37/04
Inventor 刘杰苏辉李柱徐建斌杨新刚
Owner 西安钢研功能材料股份有限公司
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