Heat treatment method and system for preparing high-performance iron-based nano crystal alloy magnetic core

Abstract

The embodiment of the invention discloses a heat treatment method and system for preparing a high-performance iron-based nano crystal alloy magnetic core. The heat treatment time is shortened by increasing the charging temperature and heating rate, magnetic ordering inside the magnetic core can be effectively controlled to some extent, the magnetocrystalline anisotropy is reduced, and the performance of the magnetic core is improved. The heat treatment method for preparing the high-performance iron-based nano crystal alloy magnetic core comprises the steps that a heating system is started; a preset temperature T0 is set for the heating system, and preset temperature information is sent to a heat treatment furnace; the heat treatment furnace controls a furnace chamber to be heated to the preset temperature T0 from room temperature; the well wound magnetic core is put into the furnace chamber of the heat treatment furnace; the heating system starts an air exhaust program; air in the furnace chamber is exhausted through the heat treatment furnace till the furnace chamber is in a vacuum state; the heating system starts an air injection program; gas is injected into the furnace chamber through the heat treatment furnace; the heating system starts a first heating accelerating program, the first heating rate v1 is set, and heating is conducted at first target temperature T1 for a first heat preservation time t1.

Description

technical field [0001] The invention relates to the field of material processing, in particular to a heat treatment method and system for preparing a high-performance iron-based nanocrystalline alloy magnetic core. Background technique [0002] The nanocrystalline magnetic core is processed through a series of processes such as base metal smelting, strip spraying, winding into rings, and heat treatment. Without considering the strip composition, core size and shape, heat treatment is essential for obtaining high performance. The magnetic core is critical. [0003] The traditional heat treatment method generally starts heating from room temperature during the heat treatment process, heats up and keeps warm according to a predetermined heating curve, and finally cools to room temperature with the furnace before taking it out of the furnace. However, due to the slow heating rate and the long time-consuming process of heating from room temperature, the production cycle is long ...

AI Technical Summary

Problems solved by technology

However, due to the slow heating rate and the long heating process from room temperature, the production cycle is long and the efficiency of batch processing is low, resulting in time-consuming and labor-intensive processes.

And due to the long heat treatment time, the magnetic crystal inside the magnetic core is prone to anisotropy in a long uncontrollable time, so that the effective magnetic permeability of the obtained magnetic core is low, which is not conducive to the high performance of the magnetic core.

Images