Inverter welding machine power transformer nanocrystalline iron core and preparation method thereof

Abstract

The invention belongs to the technical field of magnetic cores of transformers, relates to a preparation method of a nanocrystalline iron core, and in particular to an inverter welding machine power transformer nanocrystalline iron core and a preparation method of the inverter welding machine power transformer nanocrystalline iron core. The steps of rapid hardening method tape preparation, winding the iron core and heat treatment are adopted to prepare the inverter welding machine power transformer nanocrystalline iron core, and the nanocrystalline iron core is made of iron-based nanocrystalline strip material with thickness of 24+ / -2 micrometers. Compared with an iron core made of iron-based nanocrystalline strip material with thickness of 30 micrometers in the prior art, through different heat treatment technics, the temperature of the heat treatment, the soaking time and the magnetic field current process are adjusted, so that an iron-based nanocrystalline iron core with lower remancence, lower loss and lower magnetic permeability under high frequency is obtained, and meanwhile the temperature rising of the iron core transformer is reduced, the operational stability of power efficiency is improved, and the design requirements that high frequency, miniaturization and more safety of the inverter welding machine power transformer are met.

Description

technical field [0001] The invention belongs to the technical field of transformer iron cores, in particular to a nanocrystalline iron core of an inverter welding machine power transformer and a preparation method thereof. Background technique [0002] With the continuous development of electronic technology and the advancement of active devices, the volume and weight of electronic products have been greatly reduced, which has promoted the development of electronic components including electronic transformers in the direction of thinner and smaller. It is an inevitable trend for electronic transformers to develop in the direction of high frequency, low loss, light weight and small size. The use of amorphous nanocrystalline soft magnetic alloy materials with high saturation magnetic induction, high initial permeability and low high-frequency loss as the core of electronic transformers will provide a new solution for the miniaturization of electronic transformers and meet the ...

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Problems solved by technology

At present, the nanocrystalline transformer cores commonly used in inverter welding power supplies are mostly made of strips with a thickness of about 30 μm. Due to the thick strips, large volume, high remanence of the iron core, large loss, and serious heating of the iron core, Causes the temperature rise of the transformer, which leads to poor power efficiency and poor safety and stability of power operation

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