A kind of preparation method of soft magnetic alloy bar

Abstract

The invention discloses a method for preparing a soft magnetic alloy bar. A high-strength soft magnetic alloy is prepared by optimizing the chemical composition and process. The mass percentages of each component are: 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 1.80~2.10%, Mo is 0.1~0.2%, Fe is the balance; preparation The process includes: vacuum smelting, casting alloy ingots, forging blanks, hot-rolled finished products, and solution treatment. The high-strength soft magnetic alloy rod 1J22MV prepared by the present invention has a tensile strength greater than 500MPa; yield strength ≥ 250MPa; B800 ≥ 1.8T, B2400 ≥ 2.1T, B4000 ≥ 2.15T, B8000 ≥ 2.2T; coercive force Hc ≤144A / m; Curie point 980°C; saturation hysteresis coefficient (10 ‑6 ) 60~100.

Description

technical field

[0001] The invention belongs to the technical field of special material smelting and relates to the preparation of soft magnetic alloys, in particular to a method for preparing 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 induction), high λ...

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