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The scope of use of solder wire and solder bar

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Update time : 2023-02-09 11:07:11

1. Will too much rosin in the solder wire cause short circuit

Answer: Rosin does not need to cause conduction itself is an insulator, but the content of additives in the solder wire contains rosin, but there are other active substances, some active substances too much measurement may cause leakage. The reason why many electronics factories use cleaning agents to clean the surface after welding is to remove the residue after welding to ensure the safety of the electronic plate.

2. Dip welding is adopted. After welding, there is a layer of white dirty marks on the wiring terminals, which is difficult to remove.

Answer: In order to get rid of dirt, first we need to understand how dirt is produced and what substances so that we can fundamentally remove it. From the above questions, we can identify dirt as coming from flux. It is generally believed that the dirt of the flux is cleaned with cleaning agent, but the above is the terminal of the wiring can not be completely cleaned with cleaning agent will also cause harm to the terminal, the best way is to wipe with industrial alcohol.

3. How does the flux foam?

Answer: flux foaming to help flux is higher than important. The flux is poured into the foaming tank and air compressor is used as power. Flux driven by gas blowing high surface of flux will form a foam, its role is to reduce the welding and flux too much contact, to ensure that the surface of the welding clean.

4, the use of high temperature solder bar temperature is generally 450 degrees, more than this temperature will appear what phenomenon?

Answer: High solder strips are welded with electronic original devices under high temperature conditions. Its heating temperature is between 400-500 degrees. When the temperature exceeds this temperature, the surface oxide of high temperature solder strips increases rapidly. Feel that the tin liquid level is always not clean, the tin surface will appear blue.

Lead-free low temperature solder wire is suitable for welding of heat sensitive components. It is widely used in the electronics industry of stage welding (secondary welding), television tuner, fire alarm, temperature control elements, lightning protection period, air conditioning safety protectors and other industries. When welding, the temperature of the iron head is controlled between 190-200℃, and the Angle of the iron head is 45-60o (vertical working face). The soldering iron head should be in contact with the component lead and PCB pad surface.

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