Is the water quality effect on the production of the enameled wire?

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

The wrapped wire is made of natural silk, polyester fiber, glass fiber, insulating paper or synthetic resin film, etc., tightly wrapped on the conductive wire core to form an insulating layer. There are also insulating layers wrapped around the enameled wire. In addition to thin-film insulation, others such as glass filaments need to be dipped in adhesive insulating varnish to improve their electrical, mechanical and moisture-proof properties. In fact, they are combined insulation.

1. Acetal enamel wire.
2. Polyester enameled wire
3.Pu enamel wire.
4.Polyester iminelin wire
5.Polyimide enameled wire
6. Polyamide imide enameled wire

The environmental painted wires of the lacquer formula contains the shortening project development time, saving project funding, and significantly improving the quality of the project.

Wire for winding used in electrical equipment is generally called magnet wire. Simply put, ¡°Magnet wire is used for interchanging electrical energy with magnetic energy¡±.
Magnet wires are broadly divided into enamelled wire (coating insulation), covered conductor wire (fiber/film insulation), other specially formulated wire, and combinations thereof.

ENAMELED ROUND ALUMINUM WINDING WIRES are widely used for Oil-immersed transformer windings, Dry-type transformer, High temperature transformer, Motor, transformer, generator, welding machine; Sealed motor, Power tools motor, Auto alternators motor, Magnet coil, High power motor, household electro motors and micro-motors;

The heat resistance class of enameled wire is the ambient temperature where the enameled wire can work normally for a long time (above 20000h).

The current enamel wire industry is relatively low due to the admission threshold, and therefore the production enterprises have more and more, and the market competition is constantly intensified, but in the high-end product field, there are not many companies that can enter, in the present, and future, The enamel wire business wants to achieve better development, and build brands and scale becomes more and more important.

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.

¡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.

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 selection criterion of the electromagnetic wire is not considered for resistance, as the problem of resistance and fever can be done by selecting the same cross-sectional wire, it is the main consideration of the thick wire or the thin wire is mainly considered Operability.

Electromagnetic wires used to make motor windings can basically be divided into two categories: enameled wires and wound wires, in addition to inorganic insulated electromagnetic wires. Improve the electrical and mechanical properties of the magnet wire, improve its solvent resistance, heat resistance, and reduce the thickness of the insulation, which can greatly increase the slot full rate of the motor. The slot full rate is the ratio of the total cross-section of the conductor in a slot of the motor to the cross-sectional area of ??the slot, or the filling factor of the slot. This value is of great significance for reducing the volume and weight of the motor.

The multi-shaped enamel wire refers to a metal wire for winding electromagnetic coils with an insulating paint, also known as electromagnetic wires. The multi-shaped enameled wire is the primary raw material of electrical, motor and household appliances, telecommunications, electronic external electromagnetic windings. In the future, follow the rapid development of industrial appliances, household appliances, telecommunications, electronic products, etc. Market and application fields.

Round Enameled Wire type: Aluminum Wire and Copper Wire
Application:used for transformers, inductors, motors, generators, dry type transformer, Cast Resin Transformers
Dimension: Aluminum : 0.2-9.2mm; Copper: 0.016-7mm

Insulation, also called insulating coatings, is a kind of coating with excellent electrical insulation. It has good electrochemical properties, thermal properties, mechanical properties and chemical properties, mostly varnishes, but also colored paints. Insulating paint is a special paint in the paint category. Insulating varnish is an important insulating material based on high molecular polymers that can be cured into an insulating film or insulation under certain conditions. Insulating paint is composed of base material, flame retardant, curing agent, pigment and filler, and solvent. It introduces its composition, usage classification, grade classification, requirements, development trend, etc. in detail.

List 5 type of enameled wire characteristics
Acetal enameled wire
Polyurethane enameled wire
Polyester and modified polyester enameled wire
Polyesterimide/polyamide imide composite enameled wire
Polyesterimide/polyamide composite enameled wire

The samples for tensile and thermal shock testing were 3 pieces of 254mm enameled wire.

First pull the enameled wire to the required elongation at a rate of 3.7-4.6 m/sec, then wrap the jerked sample around the mandrel, and then put the wrapped sample into the oven at the specified temperature for 30 minutes. It needs to be suspended in the oven. After leaving the oven, inspect the baked samples for cracking or peeling of the paint film. In this test, the diameter of the mandrel is usually 3 times the diameter of the enameled wire.

The specified temperature of the oven is set according to the temperature specified for the enameled wire of this ANSI Type in the NEMA MW1000 standard, which is usually the temperature grade of the enameled wire +20¡ãC.

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.

Polyimide Film Covered Aluminum Wire Production Process

One step :
Take the pure aluminum material drawing into the aluminium rod wire;
Two step :
Through the extrusion production line, take the aluminum rod wire into extruding and coarse drawing operation, then becoming the requirement specification of Bare aluminium wire;

Three step :
Take up the Bare aluminum wire conductor, and inspection the bare wire coil products;

Four step :
After annealing the alumium wire coil , cleaning and pay-off the wire coil, ready to next operation;

Five step :
Taking into straightening and Tension levelling operation, varnish treat the surface of wire, and then for the glass fiber covered;

Six step :
And then for baking the fiberglass wire , pulling the finished wire, and take-up the fiberglass wire products.

Insulation description: Enamelled / Fibreglass / Nomex / Paper / Mica
Applications: high-voltage coils, relays, transformers, hand tool motors, electronic coils, etc.
Temperature resistance grade: According to the selected bottom insulation wire, there are 130, 155, 180, 200, 220 degrees and other temperature resistance grades

After the temperature resistance level is exceeded, the insulation layer will age, melt and crack. The result is that the insulation capacity is greatly reduced, and it is prone to increased loss, short-circuit failure, etc.

The main advantages of fiberglass covered wire are:
1. The quality factor Q value is large;
2. Because it is twisted by multiple enameled wire bundles, it has good flexibility and can reduce the skin effect;
3. Because it is composed of polyurethane enameled wire, the dielectric loss angle is small, and it has direct solderability.
The disadvantage is: poor moisture resistance.

Good Quality Paper Covered Flat Aluminum Enameled Copper Wire is made of bare copper wire or bare aluminum wire, or paper-covered wire as the core, wrapped with paper for insulation. According to customer and national standards, the conductor is wrapped with telephone paper, electromagnetic paper, and high-density inter-turn insulation paper. As conductor insulation, it is an ideal material for civilian-made oil-immersed transformers; especially semi-hard insulated copper wires, which can significantly improve the winding resistance. The mechanical properties and short-circuit resistance can be widely used in the winding of large and medium-sized transformers.

The infrared spectrum analysis test is based on the standard UL746A, which only confirms the chemical composition of the paint film, establishes the infrared spectrum and retains it. After the enameled wire is certified, samples will be sampled for testing every year during the follow-up inspection service. The infrared spectrum made by the paint film on the sampled sample needs to be compared with the infrared spectrum established on the sample at the time of certification. The two infrared spectrums must be comparable. superior.

Copper paint package wire production process principle

Copper lacquer wires are coated with respective lacquer solutions, and then cured by solvent volatilization and paint film.The earliest enamel wire is oily painted wire, made from tung oil.Its paint film is abrasion resistant, and cannot be used directly to make motor coils and windings, and the cotton yarn can be added to the layer.Later, polyethylene glycol formaldehyde lacquer wire came out, and its mechanical properties were greatly improved, which can be used directly for motor windings, which is called high-strength enameled wire.

First, my country has become the first big country of lacquer wire production and consumption. With the transfer of the world manufacturing center, the global enameled wire market has also begun to China, China has become an important processing base of the world, especially after China’s accession to WTO, my country’s enameled wire industry It also achieves rapid development, the production of enameled wires has exceeded the US and Japan, which became the world’s first production big country and consumer. As the economy is constantly increasing, the export of the downstream industry in the enameled wire has also increased year by year, and the enameled wire industry has entered the international market. The subregional aggregation is remarkable.

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!

The temperature resistance index of Class 155 Reasonable Price Glass Fiber Covered Aluminum Round Wire has three grades: 130, 155, and 180, and the insulation thickness generally has four grades of 20, 30, 40, and 50. This product is widely used in windings of transformers, electromagnets, welding machines or other similar electrical equipment products. Electrician bare aluminum wire produced by extrusion process is the most ideal material for producing glass fiber coated aluminum wire.

Kraft Insulated Copper Stranded Paper Covered Wire refers to the insulation layer of the wire wrapped with cable paper. The paper covered wire insulation has at least 3 layers to wrap the paper tape. When it exceeds 3 feet, the innermost and outermost layers should be covered and wrapped, and the rest can be wrapped around with a gap of no more than 2mm. When the width of the paper tape is 9.5 When mm and above, the gap should not exceed 3mm.