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Precautions For Dip Soldering Of Aluminum Enameled Wire

Update:23-03-2021
Summary:   Precautions for immersion soldering of aluminum enameled wire: 1. Since aluminum has a relatively...

  Precautions for immersion soldering of aluminum enameled wire: 1. Since aluminum has a relatively low melting point and is easy to melt into the tin pot, when welding aluminum enameled wire with a smaller diameter (below 0.4mm), the temperature should be controlled within 300°C, Reduce the melting speed of aluminum wire, avoid aluminum wire embrittlement, do not use the high-temperature tin for welding.

  2. Aluminum enameled wire must be stripped of paint. The paint can be stripped by mechanical (paint scraping, paint stripper) and chemical (paint stripping powder, paint stripping water). It is recommended to use chemical paint stripping and chemical method to remove paint. After painting, the solder joints should be fully rinsed; try not to use mechanical methods to remove the paint, as this will easily scratch the aluminum wire, produce burrs, and reduce toughness.

  3. Because of the instability of aluminum, it is necessary to remove the paint and solder immediately. Do not let the aluminum enameled wire after the paint be in contact with the air for a long time to avoid its oxidation. Generally speaking, the welding should be carried out within 5 hours after the paint is removed. , If there is no welding, it needs to be cut off and peeled off again.

  4. At the same time, the paint stripping length can be determined according to the length of the welding, that is, how long the welding is to remove the paint, to avoid exposing the aluminum to the air, leaving hidden dangers to the solder joints.

  5. Also, during dip soldering, gently shake 2 to 3 times in the tinpot to avoid air bubbles.

  6. For the connection between aluminum enameled wire and lead, the aluminum wire should be wound outside the copper lead in a small arc, which can reduce the occurrence of false welding and increase the strength of welding.