Enameled wire is mainly composed of two parts: wire and varnish, which are used as conductor and insulator respectively. The so-called enameled wire refers to a cable that uses copper or aluminum as a conductor and is coated with insulating varnish. As big as airplanes and rockets, as small as razors and mobile phones, it can be found on any electrical appliance with electric and electromagnetic effects, and it has a wide range of uses. Due to the different shapes and sizes of the applied electrical appliances, the thickness and material of the enameled wire are also different. Some are "thin" like hair, and some are "strong" like a pencil, but no matter how you change it, you can't change it. It plays a central role in electrical appliances.

Can copper enameled wire be replaced?

There are three main types of enameled wires classified by material: copper enameled wire, aluminum enameled wire and copper-clad aluminum enameled wire. What is the difference between them? First, we need to understand the difference between copper and aluminum:

The specific gravity of copper is 3.65 times that of aluminum, but its resistivity is 63% of that of aluminum. According to the national recommended standard, at 20°C, the DC resistance value of a certain cross-section of copper is equivalent to that of aluminum with two specifications larger. Compared with the unit price, using aluminum as a motor raw material is more cost-effective than copper. However, in practical applications, due to the relatively high volume requirements of the winding wire, if aluminum is used as the conductor part of the enameled wire, the volume of the motor will be greatly increased, so the substitution effect of aluminum on copper is not particularly obvious in reality.

In addition, welding of enameled wires is unavoidable in the electrical manufacturing process. The lower melting point makes welding of aluminum enameled wires more difficult than copper enameled wires, and welding materials and fluxes are not as simple, easy and mature as copper. The quality of the battery will also be greatly reduced, thereby affecting the quality and reliability of the electrical appliance.

Copper enameled wire achieves high-quality home appliances

In the decades of explosive economic growth in the past, in order to save costs, many electrical appliance manufacturers have taken a fancy to the characteristics of aluminum such as light weight and low price, and tried to replace the higher-priced copper enameled wire with aluminum. However, the limitations of aluminum itself greatly shorten the service life of electrical appliances. For example, in the field of home appliance manufacturing, some small home appliances use aluminum enameled wires as motors for a long time, and the instantaneous current will be very large, which will generate a lot of heat and easily burn out. Therefore, if aluminum is used as an enameled wire conductor for small household appliances, its lifespan will be very short and the failure rate will be high.

With the improvement of people's living standards, low price is no longer the only criterion for people to choose electrical appliances, and the all-round user experience determines whether consumers will stay or not. Electric appliance manufacturers have also abandoned the extensive business model in the past, and strive to use more refined craftsmanship to ensure product quality and protect customer rights. Although copper is more expensive than aluminum, its high-quality electrical conductivity and fineness are symbols and symbols of high-quality electrical appliances.

Therefore, in order to ensure the quality and service life, you should try your best to choose household appliances using copper enameled wires. Although the price may be relatively high, it can bring long-term convenience to life.