CN2492933Y

CN2492933Y - Coated nano-crystalline soft magnetic iron alloy core

Info

Publication number: CN2492933Y
Application number: CN 01258834
Authority: CN
Inventors: 李玉山; 王成; 李岳池
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-08-29
Filing date: 2001-08-29
Publication date: 2002-05-22
Anticipated expiration: 2011-08-29

Abstract

The utility model relates to a coated nanocrystalline magnetic alloy iron core used for transformers. The utility model has an iron core made of the nanocrystalline magnetic alloy material, and an iron core shell that is compositely structured with an inner layer wrapped by an insulation fibre cloth strip and an outer insulation lacquer layer is arranged on the surface of the iron core. Applying the processes of both the wrapping of the fibre cloth strip and the dipping of lacquer to form the solid protective shell, the utility model not only protects the iron core from the function of the direct outside force but also shortens the coupling distance between the iron core and a coil, which therefore is favorable to the heat dissipation of the iron core and increases the performance and service life of a transformer, moreover, the productive process is simple, and the cost of products is low.

Description

Coated formula nano-crystal soft magnetic alloy iron core

The utility model relates to transformer core.Be a kind of coated formula nano-crystal soft magnetic alloy iron core specifically.

As transformer core, be easy to realize high saturation flux density and magnetic permeability to have that loss is low, efficient, energy-saving advantages with nanocrystalline magnetically soft alloy material.But this kind material is softer, the crisp easy damage of property, need place the protection box or adopt the method that dipping lacquer solidifies also surperficial injection moulding that iron core is protected.Yet the cost of these production methods is all higher relatively, and volume is bigger than normal, because protection box or appearance injection molded layers are thicker, has increased the coupling spacing between iron core and coil, and the efficient of transformer is reduced.Simultaneously, the heat that thick protection box or appearance injection molded layers in use produce iron core completely cuts off in inside, is difficult for shedding, and also can cause the serviceability of transformer to reduce.

The purpose of this utility model is to provide at the problems referred to above that a kind of production technology is easy, low-cost high-efficiency can coated formula nano-crystal soft magnetic alloy iron core.

For achieving the above object, the utility model adopts nanocrystalline magnetically soft alloy material to make iron core, in the outer surface setting of its iron core by non-conductive fibre strap wrapping inner layer and the outer compound iron core protective case that constitutes of insulating varnish.

The utility model is owing to adopt non-conductive fibre strap wrapping inner layer and the outer field composite construction formation of insulating varnish protective layer; both satisfied the requirement of protection nano-crystal soft magnetic alloy iron core; can make the protection shell do very thinly again; thereby the coupling condition and the radiating condition of transformer have been improved greatly; the performance and the useful life of transformer are improved greatly, simultaneously make the manufacturing process of iron core simple again, with low cost.

The utility model is described in further detail below in conjunction with drawings and Examples:

Fig. 1 is the coated process schematic diagram of this coated formula nano-crystal soft magnetic alloy iron core;

Fig. 2 is the utility model structure cross-sectional schematic.

As accompanying drawing 1; this coated formula nano-crystal soft magnetic alloy iron core adopts the iron core 1 of nano-crystal soft magnetic alloy thin coiled stock shape that coiled requires; its shape can be annular, rectangle, day font, Long Circle or triangle etc.; twine the iron core surface with the non-conductive fibre strap after the heat treatment and constitute non-conductive fibre strap wrapping inner layer 2; its strap twines parcel can make core configuration fix; and make between iron core lamella and the lamella tightr; be formed on the reinforcement internal layer of compound shell behind next step dipping lacquer simultaneously, improve protective layer intensity.Its non-conductive fibre strap should adopt aluminosilicate glass fiber strap, and this kind material thermal resistance is good, can carry out coated before heat treatment.The coated thickness of non-conductive fibre strap can increase as required, but is at least one deck.After coated fiber strap is finished, carry out dipping lacquer and handle and formation insulating varnish skin 3.Its dipping lacquer be fit to adopt the epoxy resin hot curing varnish, requires whole dipping lacquer, and the dipping lacquer number of times can be repeatedly, at least once.

Claims

1, a kind of coated formula nano-crystal soft magnetic alloy iron core, have the iron core (1) that adopts nanocrystalline magnetically soft alloy material to make, it is characterized in that outer surface at this iron core is provided with the iron core protective case by non-conductive fibre strap wrapping inner layer (2) and the compound formation of insulating varnish skin (3).