Preparation method of monomer linear amorphous alloy iron core

Abstract

The invention relates to the technical field of metallurgy, and discloses a preparation method of a monomer linear amorphous alloy iron core. According to the method, an appropriate amount of cobalt element with high ferromagnetic property and high magnetic susceptibility is added on the basis of Fe-based amorphous alloy, so that the magnetic-lag anisotropy of the amorphous alloy is increased, and the sensitivity of the alloy for a magnetic field is improved; meanwhile, when the amorphous alloy is annealed at a constant temperature, a transverse magnetic field is applied to the amorphous alloy, and the direction of the magnetic-lag anisotropy is controlled, so that the magnetic-lag loop of the material is adjusted; after annealing is finished, the amorphous alloy is quickly cooled to below the Curie temperature of the amorphous alloy in a rapid quenching manner in the state that the application of the transverse magnetic field is continued to be maintained, atomic magnetic moments arranged along the same direction of the action of the magnetic field in the magnetic domain of the amorphous alloy are quickly cured, and alloy atoms are prevented from causing the influence of alloy to be influenced by metal inherent microstructure crystal and atom arrangement change due to thermal motion broken magnetic moment orientation and too slow alloy cooling. The finally prepared amorphous alloy iron core is high in linearity, low in iron core loss and high in magnetic conductivity.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a method for preparing a single linear amorphous alloy iron core. Background technique [0002] As the core device of current transformer, amorphous alloy iron core of linear transformer is mainly used in instrumentation and intelligent electric energy measurement and metering. The disadvantages of traditional nonlinear current transformer cores are large coercive force, poor linearity, and narrow linear range. The nonlinear characteristics of the current transformer are mainly caused by the nonlinearity of the excitation characteristics and the saturation of the iron core. Due to the nonlinearity of the excitation characteristic curve of the iron core of the current transformer, when the iron core is saturated, the excitation characteristics are nonlinear, resulting in the current transformer The transmission is non-linear, resulting in errors. However, the preparation proc...

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Problems solved by technology

[0009] In view of the above-mentioned defects in the prior art, the present invention provides a method for preparing a single linear amorphous alloy iron core to solve the problem that the preparation method of the prior art cannot simultaneously take into account high linearity and iron The problem of low core loss and high permeability

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