How to repair the heating wire in the soldering iron?
A common failure of a soldering iron is that the heating wire breaks.
1. The simplest repair method: hinge the broken part.
Disadvantages: Sparks often occur due to loose contacts after connection, and after a short time, the contacts break again.
2. Quick and reliable repair methods:
Take out the heating wire from the barrel, first remove the oxide near the break, and then twist it tightly. After splicing, sprinkle a little mixed powder of glass and electric porcelain around the joint (grind the two at a ratio of 6:1) , after installation, power on for a few minutes, the powder will melt and adhere to the contacts.
If repaired according to the above method, there will be no sparks in the contacts and they will be more durable.
What to do if the soldering iron tip burns to death
Electricians often use soldering irons to solder components. After a soldering iron has been used for a long time, the tip of the soldering iron often does not stick to tin. This is because the surface of the copper tip of the soldering iron will oxidize to form a layer of copper oxide (CuO) after being used for a long time. , preventing it from being stained with solder.
The usual treatment method is to use a knife to scrape off the copper oxide film to reveal the copper inside that has not been oxidized by air, then put it into a rosin box and dip it in, and then dip it in tin, and then it can be used normally.
However, this method removes slowly and incompletely. At the same time, if it is scraped for a long time, the copper head will become thinner and affect heat transfer, causing the temperature to drop and even damage the copper head.
Quick and efficient treatment method: Hold the wooden handle of the electric soldering iron, immerse the oxidized copper tip in a container filled with alcohol, take it out after 1-2 minutes, the oxide will be completely and cleanly removed, and the copper tip will look brand new. This is because after a chemical reaction occurs when copper oxide and alcohol (C2H5OH) are heated, copper is reduced and has no corrosive effect on the soldering iron tip.
