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Transportation and storage of enameled wire

When it comes to enameled wire, many people know it. (2) The model, specification and length of the production line should meet the requirements of the order, and the accessories should be complete; the appearance of the line should not be damaged. If the copper-clad aluminum wire and its related materials are not installed immediately, they should be stored in a centralized and classified manner, and the type, voltage, specification and length should be marked. It is strictly forbidden to push the copper-clad aluminum wire tray directly from the car.

4. During transportation, loading and unloading, the copper clad aluminum wire and wire reel should not be damaged. After the copper clad aluminum wire and its accessories arrive at the site, they should be inspected in time according to the following requirements: (1) The product technical documents are complete.. When aluminum winding wire rolling, you need to follow the direction of the arrow on the reel or the winding direction of the thread.

1. Let us briefly look at the transportation and storage of copper-clad aluminum wire, because if many wires are not transported correctly, they will most likely not be used, so let us briefly understand the transportation and storage of copper-clad aluminum wire so that you can Have a better understanding in this regard. When there is any doubt about the visual inspection, it should be judged or tested for moisture. Before transporting or rolling the coil, it is necessary to ensure that the copper-clad aluminum coil is stable and tightly wound. The spool should not be transported and stored flat.

3. (3) Be careful at the sealed end of the pipeline. Today, we introduce to you one kind of enameled wire, namely copper clad aluminum wire.

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The lubrication of the enameled wire

The curing reaction is very important, it is directly related to many properties of the enameled wire. If the curing is not enough, it will affect the flexibility, solvent resistance, scratch resistance, softening and breakdown of the enameled wire. Sometimes although the performance was good at that time, the stability of the paint film was poor. After a period of storage, the performance data decreased or even failed. If the curing is excessive, the paint film becomes brittle, and the flexibility and thermal shock decrease. Most enameled wires can be judged by the color of the paint film to determine the degree of curing, but because the enameled wires are baked many times, it is not comprehensive to judge only from the appearance. When the internal curing is not enough but the external curing is sufficient, the enameled wire has a good color, but the peelability is very poor. If the heat aging test is carried out, the paint film casing may be peeled off. Conversely, when the internal curing is good but the external curing is insufficient, the color of the enameled wire is also good, but the scratch resistance is poor. In the curing reaction, the high density of the solvent gas or the humidity in the gas will affect the conjunctival reaction, reduce the paint film strength of the enameled wire, and affect the scratch resistance. 

The proper curing of the paint film mainly depends on the baking temperature and baking time. Under the same conditions, the baking temperature is high, and the curing degree is large; under the same baking temperature, the baking time is long and the curing degree is large. The baking time is also the line speed. When the furnace temperature is too high, the cross-linked polymer chains, especially the branched side chains, will break and crack to produce low molecular weight polymers with lower molecular weights, which will form smoke oil (old glue) after condensation. If low-molecular-weight substances are not well ventilated in the process of escaping, it may form old glue in the furnace mouth and chimney and produce old glue particles on the line, which will affect the quality of the product. The amount of old glue reflects the degree of pyrolysis of the polymer to a certain extent. If most of the paint-based resin is cracked, the mechanical, electrical and thermal properties of the paint film will be significantly reduced at this time. Varieties of enameled wire have different requirements for the curing procedure of the paint film. Most enameled wires are fully baked every time the paint is applied to make the paint film well cured. However, the polyimide enameled wire is completely different. If each paint is fully cured and cured during baking, the paint film of each paint will be layered and cannot be formed into a solid whole, and the strength of the paint film is very poor. , The scratch resistance is unqualified. This is because the polyimide paint film is fully cured into an infusible substance after baking, coupled with its poor adhesion characteristics, resulting in delamination of the paint film. 

During the scratch resistance test, the paint film will be layered layer by layer. The layer is scratched. Therefore, when polyimine is baked, the paint film is basically cured but not fully cured. In some molecules of the paint film, there is still a small amount of base ends that have not reacted. When each paint baking is completed, the high temperature baking is finally carried out to make the paint The film is fully cured to form a relatively strong whole. 4. The solvent vapor and cracked low-molecular substances generated in the baking process of the enameled wire must be discharged from the furnace in time. The density of the solvent vapor and the humidity in the gas will affect the evaporation and curing during the baking process, and low-molecular-weight substances have an effect on the smoothness and brightness of the paint film. In addition, the concentration of solvent vapor is related to safety, so waste discharge is very important to product quality, safe production, and heat energy consumption. Considering product quality and safety production alone, the amount of waste discharged is larger, but a large amount of heat is taken away while discharging waste, so waste discharge should be appropriate. Catalytic combustion hot air circulation furnace usually discharges 20~30% of the hot air volume. The amount of waste discharged depends on the amount of solvent used, the humidity of the air, and the heat of the oven. For every 1kg of solvent used, about 40~50M3 (converted to room temperature) is required to discharge waste. From the heating of the furnace temperature, the scratch resistance of the enameled wire, and the gloss of the enameled wire, the amount of waste discharged can also be judged.

 If the furnace temperature is turned off for a long time, but the temperature indication value is still high, it means that the heat generated by catalytic combustion is equal to or greater than the heat consumed by the oven, and the oven will be out of control at high temperature, and the waste discharge volume should be appropriately increased. If the furnace temperature is heated for a long time in the heating state, but the temperature indication is not high, it means that the heat consumption is too much, and it is likely that the waste volume is large. After the inspection is confirmed, the waste volume should be appropriately reduced. When the scratch resistance of the enameled wire is poor, it may be that the gas humidity in the furnace is too high, especially in humid weather in summer. The humidity in the air is very high. In addition, the moisture generated after the catalytic combustion of the solvent vapor makes the gas in the furnace The gas humidity is higher, and the amount of waste discharged should be increased. The dew point of the gas in the furnace is not more than 25℃. If the enameled wire has poor gloss and is not bright, it may also have a small amount of waste. This is because the cracked low-molecular substances are not discharged and attached to the surface of the paint film to make the paint film lose its luster. 

Smoke is a common undesirable phenomenon on horizontal enamelled furnaces. According to the ventilation theory, the gas always flows from the point with high pressure to the point with low pressure. After the gas in the furnace is heated, the volume expands sharply and the pressure rises. When a positive pressure appears in the furnace, the furnace mouth will emit smoke, which can increase the exhaust air volume or reduce the air supply volume to restore the negative pressure zone. If there is only one end of the furnace mouth with smoke, it is because the air supply at this end is too large, and the local air pressure is higher than the atmospheric pressure, so that the supplementary air cannot enter the furnace from the furnace mouth, reducing the air supply volume and causing the local positive pressure to disappear. The temperature of the enameled wire coming out of the oven is very high, the paint film is very soft, and the strength is small. If it is not cooled in time, the paint film of the guide wheel will be damaged, which will affect the quality of the enameled wire. When the line speed is relatively slow, as long as there is a certain length of cooling section, the enameled wire can be naturally cooled. When the line speed is fast, the natural cooling cannot meet the requirements, and it must be forced to cool, otherwise the line speed cannot be increased. Forced air cooling is a widely used method. Use a blower to cool the wire in countercurrent through the air duct and cooler. Note that the air source must be used after purification to avoid blowing impurities and dust on the surface of the enameled wire, sticking to the paint film, and causing surface problems. 

Although the water cooling effect is very good, it will affect the quality of the enameled wire, make the paint film moisture, and reduce the scratch resistance and solvent resistance of the paint film, so it is not suitable for use. Lubrication The lubrication of the enameled wire has a very large relationship with the tightness of the wire. The lubricant used in the enameled wire is required to make the surface of the enameled wire slippery, not harmful to the wire, not affecting the strength of the take-up reel, and not affecting the user's use. The ideal amount of oil applied is to achieve a slippery feel of the enameled wire, but no obvious oil can be seen on the hands. Quantitatively speaking, 1 gram of lubricating oil can be applied to the surface of 1M2 Enamelled Copper Wire. Common lubrication methods include felt oiling, cowhide oiling and roller oiling. In production, choose different lubrication methods and different lubricants to meet the different requirements of the enameled wire in the winding process. The purpose of winding and winding is to continuously, tightly and evenly wind the enameled wire onto the spool. It is required that the take-up mechanism has a stable transmission, low noise, proper tension and regular wire arrangement. In the quality problems of enameled wire, the proportion of returns due to poor wire collection and arranging is very large, which is mainly manifested in the high tension of the wire, the wire diameter is thinned or the wire reel burst; the wire tension is small, and the wire reel is broken. Loose lines cause chaotic lines, and uneven lines cause chaotic lines. Although most of these problems are caused by improper operation, it is necessary to take necessary measures in the process to bring convenience to the operators. The take-up tension is very important, which is mainly controlled by the operator's hand feeling.

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The advantages and disadvantages of different enameled wires

It has the advantages of good transmission performance, low production cost, wide application range, and strong soldering performance.. 3. It is suitable for various electronic coils, transformers, inductors, rectifiers, etc. It can be seen from the above that the advantages and disadvantages of different enameled wires are different and the same. Pure copper enameled wire: As a traditional type of enameled wire, it has the advantages of wide application range, simple welding method, and stable performance, but it also has the disadvantage that the production cost is relatively high. But the disadvantage is that the tensile strength is weaker than copper wire, only about 30%-40% of copper wire; during production, the conductor is easily stretched; soldering requires special treatment. 1.Three types of enameled wire 

 Everyone should know something about enameled wire, it is a winding wire composed of a conductor and an insulating layer. 2. Aluminum enameled wire: The density is lower than that of copper clad aluminum, and the product Round Wire weight is 2/5 of copper wire, which effectively saves the cost of production materials. Let's take a brief look at it below. There are many types of it, and each has different advantages. Copper clad aluminum enameled wire: used to replace pure copper enameled wire. The disadvantage is that the tensile strength is only 50% of copper wire, which is easier to break

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Three advantages of copper clad aluminum enameled wire

 Enameled wire is a kind of cable wire, and copper clad aluminum enameled wire is a representative of enameled wire. It has the following advantages:

 1. Light weight: With the same wire diameter, its density is 1/2.5 of pure copper wire, reducing the weight of the coil. Use copper clad aluminum enameled wire instead of copper wire to reduce cost and waste. 

2. DC resistivity: Copper clad aluminum enameled wire is 1.45 times that of pure copper wire in DC resistivity; so when the resistance value is the same, its weight is much lighter than pure copper wire.

 3. Good solderability: Because its surface is covered with a layer of pure copper, it has the same solderability as pure copper wire and does not require special treatment like aluminum wire. 

The above is an introduction to the advantages of copper clad aluminum enameled wire. If you want to know other knowledge about enameled wire, you can  Enameled wire manufacturers read our official website news.

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A Variety of Benefits That You Can Enjoy From Using Composite Enameled Copper Wire

Composite Enameled Copper Wire is a relatively new technology that was created with the intention of creating a long lasting and durable wire. Its primary function is to handle extreme heat and is ideal for high temperature electronics and even industrial and military applications. The wire can be easily formed into any shape by an electrical spark, which makes it particularly suited to be used in heat sensitive areas. This wire harness is made out of three copper wires that are coated with an epoxy resin that gives it extra strength and durability. The wire can be wrapped around a mandrel to form a wire harness, or it can be pre-shaped into a more traditional wire harness design.

Many people have already come to appreciate the advantages of using composite enameled copper wire. One of its major benefits is that the wire doesn't conduct electricity, so it's safe to use with electrical toys that produce electricity. Additionally, this wire is incredibly durable and can withstand exposure to extreme temperatures and moisture. Many different wire harnesses are available in the market today, but nothing beats the performance and durability of a well-made composite wire. Another important advantage of this wire is that it can be customized into virtually any shape and size. You can even decide whether you would like the wire to have a round, oval or triangular shape depending on your personal preference.

Composite Enameled Copper Wire also comes in different colors including white, black and silver. The most common wire that is available in these colors is typically white, although other colors can also be purchased. The enamel coating gives this wire the ability to resist corrosion and it is also extremely resistant to the ultraviolet rays of the sun. Copper wires also look good when they are coated with a rust-resistant finish such as aluminum bronze or stainless steel.

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The Advantages and Disadvantages of Enameled Aluminum Wire

If you choose to use this wire for industrial or commercial applications, you should take special care to avoid touching the wire during welding or any other attempt at soldering, as this will lead to damage to the wire. If the wire becomes exposed while being soldered, the metal will often develop a black matte finish on the surface of the wire, which is not only unattractive, but also extremely difficult to clean. Enameled aluminum wire may also experience a problem with thermal expansion, which causes the wire to expand when it is exposed to heat, eventually expanding to the point where it can burn through the insulation and release harmful particles into the air.

Another problem that can occur with this type of wire is that the insulation around the wires can tear or break, causing the wire to become unstable. This can cause it to become difficult or even impossible to work with and will require immediate replacement. To protect yourself from these problems, it is strongly recommended that you purchase this wire in its raw form, unadulterated and unpainted. Raw and unpainted wire will not only be less expensive than purchasing wire already stripped and exposed, but will also be protected from the aforementioned issues.