Aromatic polyimide enameled wire

Type: insulated
Delivery time: 7-30 Days
Conductor Material: Copper
Standard: IEC,NEMA,GB,JIS
Diameter: 0.016mm–9.2mm
Brand Name: LP Magnet Wire
Bobbin: 30kg/50kg Wooden Spool

The enamel wire is a major variety of winding wires, composed of two conductors and insulating layers, after the naked wire is deck, and then painted, baked.However, it is not easy to produce products that meet the standard requirements, but also meet customer requirements, it is affected by factors such as raw materials, process parameters, production equipment, environment, and therefore, the quality characteristics of various enameled wires are different, but they haveFour major properties of mechanical properties, chemical properties, electrical properties, and thermal performance.

The AWG tables are for a single, solid and round conductor. The AWG of a stranded wire is determined by the cross-sectional area of the equivalent solid conductor. Because there are also small gaps between the strands, a stranded wire will always have a slightly larger overall diameter than a solid wire with the same AWG.

1. Different materials: structure and composition are different
2. Different performance: Since the three-layer insulated wire cannot be directly welded, it needs to be stripped first, and the cost is higher, and it will be replaced by FIW; the insulation level is different, and the three-layer insulated wire can be produced with a temperature resistance of 200 degrees
3. Can be different in color, etc.

Enameled wire is a main type of magnet winding wire. It is composed of a conductor and an insulating layer. After the bare wire is softened by annealing, it is painted and baked many times. However, it is not easy to produce products that not only meet the requirements of the standard, but also meet the requirements of customers. It is affected by the quality of raw materials, process parameters, production equipment, environment and other factors. Therefore, the quality characteristics of various enameled wires are different, but they all have Mechanical properties, chemical properties, electrical properties, and thermal properties

The glass in Glass Fibre Conductor may be applied in woven tape form or as a continuous fibre. It has proved to be an efficient insulation providing coil winders with thermal stability, adequate electrical properties and good resistance to abrasion after varnishing. The glass is bonded with a varnish to improve dielectric strength and mechanical properties.

1. Mechanical function: including elongation, return angle, softness and adhesion, scraping, tensile strength and other items.
2. Heat resistance: including thermal shock and softening breakdown test.
3. Electricity includes: breakdown voltage, lacquer film continuity and DC resistance test.
4. Chemical resistance includes solvent resistance and welding.

After the product is manufactured, whether its appearance, size and performance meet the requirements of the technical standards of the product and the technical agreement of the user must be judged by the inspection beam and measured; the test shall be compared with the technical standard of the product or the technical agreement of the user and meet the requirements If it is qualified, otherwise, it is unqualified. Passing the inspection can reflect the stability of the enameled wire product quality, the material and the rationality of the process. Therefore, the quality inspection has the function of checking, preventing and identifying.

Type of magnetic wire is divided into enameled wire, wrapping wire, insulated wire, combined wires and others,Mainly used in motors, electrical appliances, instruments, transformers, etc., to generate electromagnetic effects by winding coils, and use the principle of electromagnetic induction to achieve the purpose of converting electrical energy to magnetic energy

Thermal Class: 130-220C
Conductor Material: Copper
Standard: IEC,NEMA,GB,JIS
Delivery time: 7-30 Days
Brand Name: LP Magnet Wire
Insulation: PEW, PIW, EIW, AIW, EI/AIW

The enameled wire paint coats up to 30 layers of copper and aluminum wires to provide electrical insulation and help avoid short circuits in the coil. Such enameled wire paint must also have excellent chemical resistance and high temperature resistance, must have excellent adhesion with copper or aluminum wires, and also have excellent mechanical stability.
In some cases, such as for motors driven by frequency converters, a suitable insulation layer should be able to resist partial discharges that may cause short circuits and malfunctions in the engine.

Enameled wire is coated with insulating paint on the outside of the bare Aluminium wire, constitute the inside due to the effect of insulating varnish, between the two adjacent wire can bear 200 v ac voltage Q general insulation flow line surface light, soft, can work under the condition of 130 ¡æ continuous.In addition, enameled wire bending also requires 10 times, paint should not fall off, in order to meet the winding when won’t appear the quality problem.

Question: During our production process, we found that one axis of enameled wire is wound around the axial inductance. This axis of enameled wire and other axis of enameled wire are wound on the same magnetic core. The inductance of the enameled wire with this axis is relatively high. We made 1mH inductance, and the enameled wire of the other axis was only 960uH, and the problematic wire of this axis was 1.025mH, and the inductance test frequency was 796kHz. (1) The number of stitches is the same as the number of turns, excluding the slip ring. (2) The 1-meter straight resistance is a bit smaller than that of other shafts. I personally think that the enameled wire contains magnetic substances, but if it contains magnetic substances, the resistivity should be greater, and the DC resistance should be greater. So please help to solve the problem, or have encountered this kind of problem before, please analyze it, thank you in advance!

A brief introduction to the advantages and disadvantages of copper wire and aluminum wire:Same area:

1, copper wireis large load than aluminum wire . 2, copper wire is more flexible than aluminum wire. 3 copper wire is lower resistivity than aluminum wire. 4,copper wire is more stable than aluminum wire. 5, however, copper wirer price is 3.5 times higher than aluminum wire.

FiberGlass covered Aluminum wire is according to customers requirement, aluminum conductor is evenly covered with one or two layers of non-alkali fiberglass, then it¡¯s impregnated in compatible insulating coating of required thermal class baked to make a whole between fiberglass and Aluminum conductor (optionally be applied to polyester and polyamide).

There are some differences between polyester enameled wire and polyurethane enameled wire in terms of use occasions and performance:
Polyester enameled wire, composed of copper conductor and polyester resin, has a thermal class of 130, and after modification, the thermal class of the enameled wire is 155. It has good mechanical strength, paint film adhesion, excellent electrical, scratch resistance, chemical resistance, thermal stability and solvent resistance. It is widely used in various motors, electrical appliances, meters, telecommunications equipment and home appliances; the weakness of this product is poor thermal shock resistance and low moisture resistance.

Polyurethane enameled wire, thermal grade is 130,155,180. The biggest feature is that it has direct solderability, good high frequency resistance, easy coloring, and good moisture resistance. It is widely used in electronic appliances, precision instruments, telecommunications, and meters. The weakness of this product is that the mechanical strength is slightly poor, and the heat resistance is not high. , And the flexibility and adhesion of the production of large-size wires are poor, so the specifications of the product are mostly small and medium-sized wires.

Enameled wire is a main type of winding wire. It is composed of a conductor and an insulating layer. After the bare wire is softened by annealing, it is painted and baked many times.

General purpose enameled wire (ordinary wire): Mainly used for winding wires in general motors, electrical appliances, instruments, transformers, etc., such as polyester enameled wire and modified polyester enameled wire.

The paper covered wire is a type of enameled wire that is extruded or pulled by an oxygen-free copper rod or an electrical circular aluminum rod, and then annealing the wire, and then winding two layers or two layers of insulating on the copper (aluminum) conductor.Paper (including telephone paper, cable paper, high voltage cable paper, turns], suitable for oil immersion transformer coils and other similar electrical windings.Electrical bare copper (aluminum) wires produced by extrusion process are the most ideal materials for the production of cable paper wraps.

Enameled Aluminum Wire Compared To Enameled Copper Wire have some advantages
Aluminum /Copper Wire/foils
Dimension:0.2–10.0mm,
Rectangular: A> 0.8–8mm, B> 2-22.5mm
Square: 0.4*0.4mm–8*8mm
Foils:Thickness：0.2–2.5mm, width:60–1250mm

¡ñ Conductor resistance. Measure with a conductor resistance tester, and then change to the value at 20¡ãC for comparison.
¡ñInsulation destruction voltage. Twist two enameled wires, apply voltage between the conductors, and judge by the damage voltage of the paint film. This performance is analyzed and judged through two tests of normal state and cold state breakdown voltage.
¡ñPaint film continuity (pinhole). Check the small holes of the paint film with a certain length of the test material. The project is tested by a high-pressure paint film continuity tester.

The difference between enameled aluminum wire and enameled copper wire of vibration motor: the resistivity of copper wire is 0.017, and the resistivity of aluminum wire is 0.028. The cross-sectional ratio of copper wire and aluminum wire interchange is 0.79:1, and six square copper wires are equivalent to ten square aluminum wires. The diameter of the aluminum wire is thicker than that of the copper wire, and the same aluminum wire of the stator slot will not fit.

The enameled wire manufacturer takes you to understand the high-temperature paint wrap of high-temperature paint wires, and it is necessary to judge, whether its appearance, size, and performance meet the technical standards of the product and user technical agreements. After the measurement, test, the technical standards of the product and the technical agreement of the product are compared to the requirements for qualified products, which does not meet the requirements for unqualified products.

Carbon aluminum wire is an aluminum wire for parts manufacturing of various machines.08 and 08F aluminum wire for rolling thin plates, deep-drawing products, oil drums, high-grade enamel products, less demanding carburizing and cyanide parts, welding rods, etc.

Application:1. High-frequency transformers, ordinary transformers; 2. Inductances, electromagnetic coils; 3. Motors, including household motors, various micro motors, compressors and other motors with high environmental requirements; 4. Special electromagnetics for audio coils and optical drives Wire; 5. Electromagnetic wire for display deflection coil; 6. Electromagnetic wire for degaussing coil;

In the long-term thermal aging test, three or more temperature points are usually selected for accelerated aging, commonly known as “three-point aging”.

The samples for the aging test are stranded enameled wire pairs. The production of the stranded pairs should meet the requirements of ASTM D2307 or NEMA 1000 standards, including the weight to be applied when making the stranded pairs, the number of twisted turns, the effective length of the stranded area, and The length of the two ends of the twisted pair, etc. When making a twisted pair, the required force and the number of twist turns will vary depending on the diameter of the wire. The effective length of the stranded area has nothing to do with the wire diameter, the effective length is 121¡À6 mm, and the two ends are at least 50 mm long. At least 10 twisted pairs per temperature point and mounted on twisted pair racks for high temperature aging test.

Copper Magnet Wire Manufacturing Process includes important three steps – enameling, winding and Inorganic insulated wires. Mainly introduce the method to ensure the quality of copper enameled wire.

UL Certificated 220 High Thermal Class Oxidized Film Aluminum Wire and aluminum strip insulated with aluminum oxide film are used in the fields of electronics, missiles, nuclear reactors, aerospace and aircraft industries. The oxide film has high flexibility and is suitable for winding electromagnetic coils of various shapes and sizes. The use of round or rectangular aluminum wires and aluminum strips can save 50% of metal, so it has commercial value. For example, linear motors and medical equipment industries are widely used because of their light weight and low inertia. For rotating equipment, light weight can simplify the dynamic balance, thus reducing the vibration generated by the dynamic balance, thereby improving the sensitivity of the moving coil and its high-frequency response.

The enameled wire has always been a very important industry in the national economy, and with the continuous change and development of the market, the enameled wire industry is constantly adjusting, from the current perspective, the future of the entire enamel wire industry will move towards the future.

The motor generally includes a stator and a rotor, with a core and windings on the stator or rotor.
The insulated wire is winded by a certain shape to form a coil. The coil can be a turn or a plurality of turns. A plurality of coils form a group of units and is called a coil group. A combination of a plurality of coils or coil groups constituting one phase or the entire electromagnetic circuit becomes a winding .

1. Polyester enameled wire (P.E.W.)
Polyester enamel-covered wire is made of heat-resistant Terephthalic Polyester resin as the main grease as the insulating film and baked on the conductor. Its characteristics are as follows:
¡ñThe heat resistance is superior to synthetic tree (P.V.F.) enameled wire and U.E.W. enameled wire.
¡ñExcellent chemical resistance (except alkaline) and solvent resistance.
¡ñThe mechanical strength is comparable to synthetic resin (P.V.F.).
¡ñThe force rate and dielectric rate are comparable to U.E.W. enameled wire.
¡ñAlkali resistance and moisture resistance are better than synthetic resin enameled wire (P.V.F).