CN105632686A - Fabrication method for shielding shell of transformer - Google Patents

Abstract

The invention discloses a fabrication method for a shielding shell of a transformer. The fabrication method comprises the following steps of 1, fabricating an outer shielding shell main body of the transformer by using ferrite; 2, respectively electroplating a layer of La-Cu series of composite electromagnetic shielding material on the inner surface and the outer surface of the shielding shell main body; 3, carrying out passivation treatment on the inner surface and outer surface of the shielding shell by using a passivation agent; and 4, coating a layer of insulation resin with conductive ions outside the shielding shell main body by hot melting. Through comprehensive surface treatment on the ferrite shielding shell, the magnetism of the ferrite is improved, and the fabrication method has the advantages of low cost, simplicity in process, device and fabrication and the like.

Description

A kind of preparation method of shielding shell of transformator

Technical field

The preparation method that the present invention relates to a kind of shield shell, the preparation method of shielding shell of especially a kind of transformator.

Background technology

Along with society's stepped into information epoch, electrical equipment is increasingly entering in production and the life of people, the electromagnetic radiation thus caused is also increasingly severe, electromagnetic radiation pollution has become the polluter that can not be ignored, at present, electromagnetic radiation protection measure mainly has: shielding, filtering, absorption etc., and wherein shielding is one of electromagnetism interference most efficient method. The shielding material that current power system is commonly used is homogenous material, such as shielding materials such as stalloy, rustless steel, ferrum, these materials are typically fabricated as thin plate, thin slice, although so saving material and easily arrangement, but it is reduction of the capability of electromagnetic shielding of material, and energy consumption increases, bigger to around endangering.

Summary of the invention

It is an object of the invention to provide the preparation method of shielding shell of a kind of transformator.

The purpose of the present invention is achieved through the following technical solutions: the preparation method of shielding shell of a kind of transformator, comprises the following steps:

Step 1, use ferrite make transformator external shielding case main body;

Step 2, electroplate one layer of La-Cu system composite electromagnetic shield materials respectively at shield case main body surfaces externally and internally;

Step 3, use passivator are passivated processing at shield case main body surfaces externally and internally;

Step 4, shield case main body external hot melting be coated with one layer of insulating resin with conductive ion.

Further, described insulating resin is Hydrophobic insulation resin.

Further, described insulating resin is epoxy resin.

The invention has the beneficial effects as follows: by ferrite shielding case is carried out comprehensive surface treatment, ferrimagnetism increases, and has that with low cost, simple process, equipment are simple, prepare the plurality of advantages such as simple.

Detailed description of the invention

Below in conjunction with specific embodiment, the present invention is further described.

The preparation method of shielding shell of a kind of transformator, comprises the following steps:

Step 1, use ferrite make transformator external shielding case main body;

Step 2, electroplate one layer of La-Cu system composite electromagnetic shield materials respectively at shield case main body surfaces externally and internally;

Step 3, use passivator are passivated processing at shield case main body surfaces externally and internally;

Step 4, shield case main body external hot melting be coated with one layer of insulating resin with conductive ion.

Further, described insulating resin is Hydrophobic insulation resin.

Further, described insulating resin is epoxy resin.

In actual use, the thickness of top layer plating and the thickness of insulating resin can be adjusted according to actual needs.

Claims (3)

1. the preparation method of shielding shell of a transformator, it is characterised in that: comprise the following steps:

Step 1, use ferrite make transformator external shielding case main body;

Step 2, electroplate one layer of La-Cu system composite electromagnetic shield materials respectively at shield case main body surfaces externally and internally;

Step 3, use passivator are passivated processing at shield case main body surfaces externally and internally;

Step 4, shield case main body external hot melting be coated with one layer of insulating resin with conductive ion.

2. the preparation method of shielding shell of transformator according to claim 1, it is characterised in that: described insulating resin is Hydrophobic insulation resin.

3. the preparation method of shielding shell of transformator according to claim 1 and 2, it is characterised in that: described insulating resin is epoxy resin.