The effect of hollow coil

1, the hollow coil is used for the manufacture of electrical goods ininsulated wire coil or winding. Also known as winding wire.Electromagnetic line must meet a variety of application andmanufacturing skills requirements. The former includes the shape,specification, short-term and long-term work at high temperatures, and the acceptance of centrifugal force vibration and high speed in some instances under high voltage, the corona and the breakdown oftolerance, particularly under the atmosphere corrosion; the latter includeswinding and inlay line stretching, bending and abrasion from demand theimpregnation and drying process, and the swelling, corrosion etc..

2, electromagnetic wire can form, according to the foundation ofconducting wire and electrical insulating layer classification. According to the general electric insulation layer for insulating material and manufacturing method for enameled wire, winding wire, enamelledwinding wire and inorganic insulation line. Enameled wire conductorcoated with lacquer solution accordingly, made by evaporation of the solvent and the curing and cooling. Enameled wire with insulating paintused for the dividends of polyester enameled wire, polyester imideenamelled wire, polyamide imide enamelled wire, polyimide enamelled wire, polyester imide / polyamide imide enameled wire, corona resistantenamelled wire, and oil paint, acetal paint, polyurethane enamelled wire.Sometimes it is classified according to its use, such as self-adhesiveenameled wire, enameled wire resistance.

3, hollow coil of the earliest enameled wire enameled wire is made fromoil, Tung oil. The coating wear resistance is poor, can not be directlyused in the manufacture of motor coil and winding, when used with cotton yarn winding layer. Polyvinyl formal enamelled wire came later, its mechanical performance is forward, can be directly used for the winding of the motor, and is called the high strength enamelled wire.

4, with the weak ability of appeared with self-adhesive enameled wire, notimpregnated, baking and coil good integrity. But the poor mechanical strength, can only use a small motor, micro motor. In addition, in order to avoid welding to remove the film trouble, launched a direct weldingenamelled wire coating, it can fall on their own and make the copperbriefly in high temperature tin groove welding. Due to the use of the enameled wire is more and more widely, the demand is becoming more and more serious, also launched a composite enamelled wire. The outer layer of the film is made of high molecular material, not the same, such aspolyester imide / polyamide imide enamelled wire.

5, around the first type wire winding. Early use of cotton and silk, known as cotton and silk covered wire, used in motor, electric appliance.Because the thickness of insulation, low heat resistance, have beenreplaced by the enameled wire. At that time only used in high-frequencywinding wires. Winding of large and medium-sized standardized, when theheat level and higher mechanical strength is big, also used in the manufacture of glass envelope, and accompanied by the appropriateadhesive paint.

In 6, the core core inductance coil, inductance can be added, canadvance inductance coil Q value, also can reduce the number of turns of coil. After the adjustment of the core

The range can also make the inductance coil is changed, then meet the precision demand of inductance circuit.

A coil core materials by manganese zinc ferrite and nickel ferrite. A "E" shape, cylindrical, cylindrical, I-shaped cap,

Rectangle. Some of the inductance coil in the core, the core material ofpermalloy or silicon steel sheet. Such as low frequency choke put forsilicon steel sheet.

Shield 7, shield coil cover is to influence the electromagnetic coil externalcircuit to reduce seizures, but also in order to reduce the influence of external electromagnetic field on inductance coil.

Shield made iron general, matched with the position and the coil, and thecoil is placed between the shield demand, grounding, shielding effect toplay good.

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