Bondable contains an extra adhesive film, which can be epoxy, polyester or polyamide, on top of the usual insulation. The adhesive activates when heated up, bonding the windings of the wire into a self-supporting coil. This eliminates the need for the spindles around which the wire is wound, called bobbins.
The three main techniques for bonding are solvent, oven and resistance.
Solvent bonding will be applied while the wire is winding. if not, then the completed coil will be dipped in the solvent when the wire is fully coiled.
During oven bonding, the wire is fully wound first before it is put into an oven. The size of the coiled wire will determine how long oven bonding takes, generally ranging from 10 to 30 minutes. China quality kapton insulated copper wire Resistance bonding uses an electric current to bond the wire after it has been coiled. How long it will take to complete the process is dependant on the size and design of the coil. Resistance bonding is not typically used for wire that are less than 34 gauge.
Soldering Process
Enamelled copper wire needs to be soldered. Soldering is the process in which two metals are fused together. This done by taking a third metal, which will be melted down, and putting it between the wire and whatever it is being soldered to. When the third metal solidifies, it will fuse the wire to the other application.
Older wire sometimes needs insulation to be removed before the wire can be soldered, but that is not usually the case. Acetal Enameled Wire price Brazil The majority of wire being made now has insulations that acts as a flux, and therefore will not need to be removed before the wire can be soldered. GP/MR-200 wire needs its insulation to be removed first, but the Soderon 155 does not.
Breakdown Voltage
There are three types of breakdown voltage, another name for the dielectric strength of wire insulation: Grade 1, Grade 2 and Grade 3. The breakdown voltage grade will increase with thicker insulations.
Breakdown voltage is based on AWG standards, with smaller gauges having higher breakdown voltages.
The insulation thickness, or build, is the diameter of the enamel, which can be calculated by subtracting the total diameter of the bare copper wire from the total diameter of the insulated wire.
Insulation builds are known as single, heavy, triple or quadruple. Single and heavy are the most commonly found.
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