Enameled wire with baking enamel coating

Have you ever heard children asking questions like: What makes the drum in the washing machine turn? How can a car drive without gasoline? Some people need to wind up their watches, but a lot of people don't - why? A brake without brake shoes - is that possible? The simple answer is, as we know: electric motors.

Electric motors essentially have two components, the stator and the rotor. Electrical energy is conducted through copper wire windings in such a way that a resulting magnetic field sets the rotor in the stator turning. An electromagnetic brake also functions in effect like a motor; only, the rotor is not driven, but rather braked by means of a countercurrent. The fact that the current is directed along predefined paths allows micrometer-thick insulation to be provided. This involves wire enamels, which are applied in special machines to the wire. The result, in short, is a single core cable. An enameled wire.

The size and efficiency of the motor will vary considerably, depending on its area of application. Hence, different demands are made of a motor for a wristwatch mechanism than of a crane motor on an oil rig. Not only the design and size but also the working temperatures and ambient conditions dictate what properties the selected wire enamel has to have.

ELANTAS develops and produces a variety of wire enamel types, which provide solutions for an ever-growing range of applications.

Yet, the range of ELANTAS products does not simply consist of insulating coatings. Some special applications require dimensionally stable windings and coils. To allow such systems to retain their shape, baking enamels, which are additionally coated on the enameled wire, are provided, based on aliphatic or partly aromatic polyamides, for example. These coatings are, in principle, dissolved thermoplastics.

In its hardened state, an enameled wire is no different from a baking enamel wire. However, if an enameled wire without a thermoplastic coating were to be wound freely on a core, it would come apart again once the winding tool were removed.

The baking enamel wire, on the other hand, is heated for several minutes to a temperature adjusted to the baking enamel system and then cooled down again, while the fresh winding is still in the automatic coiling machine. In this process, the thermoplastic reaches its melting point, flows, and sticks together on cooling down, which is why baking enamels are so frequently referred to as adhesive varnishes.

By this means, it becomes possible to manufacture high-strength freestanding coils. The broad range of ELANTAS baking enamels is based on the know-how of the motivated staff and is constantly tailored to changing requirements. In essence, the aim is to reduce the energy consumption of machines to a minimum.

Washing machines, electric cars, wristwatch mechanisms, electromagnetic brakes, and much more will all become long-lasting and reliable companions with our products. Thus the baking enamels of ELANTAS are making a valuable contribution to environmental protection, which is likely to please the children referred to initially first and foremost.