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How should tin wire be soldered

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Update time : 2022-11-29 15:15:45
1. Solder wire and solder flux
When soldering, solder wire and solder flux are also needed.
(1) Solder wire: For soldering electronic components, solder wire with rosin core is generally used. This solder wire has a low melting point and contains rosin flux, which is extremely convenient to use.
(2) Solder flux: The commonly used flux is rosin or rosin water (dissolve rosin in alcohol). The use of flux can help remove oxides on the metal surface, which is good for soldering and protects the tip of the soldering iron. Solder paste can also be used when soldering larger components or wires. But it is corrosive to a certain extent, and the residue should be removed in time after welding.
2. Auxiliary tools
In order to facilitate welding operations, needle-nose pliers, partial-nose pliers, tweezers and knives are often used as auxiliary tools. Learn to use these tools correctly.
Pre-welding treatment
Before soldering, pre-soldering treatment should be carried out on the component pins or the soldering parts of the circuit board.
(1). Remove the oxide layer on the welding part
A knife can be made from a broken saw blade. Scrape off the oxide layer on the surface of the metal leads to expose the metallic luster of the leads.
The printed circuit board can be polished with spun paper, and then coated with a layer of rosin alcohol solution.
(2). Component tin plating
Tin the scraped leads. After dipping the lead wire in the rosin alcohol solution, press the tip of the hot soldering iron with tin on the lead wire and turn the lead wire. The leads can be evenly plated with a very thin layer of tin. Before the wire is welded, the insulation sheath should be peeled off, and then the above two treatments can be performed before formal welding. In the case of multi-strand wires, they should be twisted together after polishing, and then tinned.
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