In the industrial production process, welding is a rela […]
In the industrial production process, welding is a relatively important technology. In the face of production, the understanding of welding plays a crucial role, but when welding, there should be attention when it should be noted. Edit the precautions for dip soldering of Enameled aluminum wire.
Precautions for dip soldering of aluminum enameled wire:
1. Because the melting point of aluminum is relatively low, it is easy to melt into the tin pot. Therefore, when welding a small diameter aluminum enamel wire (below 0.4mm), the temperature should be controlled within 300 °C, so that the melting speed of the aluminum wire is reduced, and avoiding The aluminum wire is embrittled and should not be soldered with high temperature tin.
2, Aluminum enameled wire must be stripped paint, stripping can be used mechanical (scraping paint, paint stripping machine) and chemical (paint stripping powder, stripping water) two stripping methods, Xiaobian recommended the use of chemical stripping, using chemical methods After stripping, the solder joint should be fully rinsed; try not to use mechanical methods to remove the paint, which will easily scratch the aluminum wire and produce burrs, thus reducing its toughness.
3, Because of the instability of aluminum, so you need to paint immediately, welding immediately, do not let the aluminum enamel wire end of the stripping paint contact with the air for a long time, to avoid excessive oxidation, usually it is necessary to weld within 5 hours after stripping If there is no welding, it needs to be cut off and stripped again.
4. At the same time, the stripping length can be customized according to the length of the welding, that is, how long the soldering is to go to the paint, to avoid exposing the aluminum to the air, leaving hidden dangers to the solder joint.
5, In addition, in the dip soldering, need to gently shake 2 to 3 times in the tin pot to avoid air bubbles.
6. The connection of the aluminum enamel wire and the lead wire requires that the aluminum wire be wound around the copper wire with a small arc, which can reduce the occurrence of the false welding phenomenon and improve the welding strength.
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