How to tin the tip of a soldering iron
Soldering iron head in the lead-free soldering process, sometimes there will be a soldering iron head does not stain the phenomenon of tin. Such cases in addition to the quality of the soldering iron head itself, we can also find reasons from other nine aspects:
1 1, select the temperature is too high, easy to make the soldering iron head tin surface oxidation.
2, not before the use of the tin surface to eat tin.
3, the use of incorrect or defective cleaning methods.
4、 Use of impure solder or flux interruption in the wire.
5, when the working temperature exceeds 350 ℃, and stop soldering for more than 1 hour, lead-free soldering iron tip on the amount of tin is too small.
6, "dry burning" soldering iron head, such as: the soldering station is open without using, and the surface of the soldering iron head without tin, will cause the rapid oxidation of the soldering iron head.
7, the use of flux is highly corrosive, thus causing the rapid oxidation of the soldering iron head;
8, the use of neutral activity of the flux, not often clean up the oxides on the soldering iron head
9、 Contact with organic materials such as plastics, lubricants or other compounds. The usual treatment:
Is to use a knife to scrape off the oxidized layer of the soldering iron head, exposing the copper that has not been oxidized by the air. Then, put into the rosin box dipped, and then dipped in tin, can be used normally. But with this method of removal is not complete, at the same time, long-term scraping down, the soldering iron tip will become thin and affect the heat transfer, resulting in a drop in temperature, or even damage to the soldering iron tip.
The fast and efficient way to deal with it is:
Hold the iron handle, the oxidized soldering iron tip immersed in a container of alcohol, after 1 ~ 2 minutes to remove, oxides on a thorough, clean removed, soldering iron tip a new look. This is because the copper oxide and alcohol heating, produced a chemical reaction, and restore the copper, no corrosive effect on the soldering iron head.
Why can't the surface of lead-free soldering iron tip be stained with tin? Because the following situations will lead to the production of carbide and rapid oxidation of the soldering iron tip, resulting in non-tinning.
1. The soldering iron tip is exposed to high temperature for a long time.
2. The soldering iron tip should be tinned at the end of the operation.
3. Plastic parts contacted during soldering are not cleaned in time.
4. Scrub the iron head on a dry or unclean sponge or cloth.
5. Whether the soldering iron head is covered with carbonized flux.
6. Bad plating or solder or soldering surface is not clean.
How to restore a non-tinned lead-free soldering iron tip? The following methods can be used.
1. Decrease the temperature of the soldering station to about 280 degrees, put the soldering iron head on a damp sponge and wipe repeatedly and uninterruptedly on the new tin protection, repeat the above actions until the lead-free soldering iron head bright tin.
2. Turn off the power supply of the soldering iron, use a razor blade or fine sandpaper to polish off the dirt and oxides on the tin-plated surface of the soldering iron, and then put the soldering iron head into the rosin or rosin paste, turn on the power supply of the soldering iron, adjust the temperature to 280 degrees or so, and let the soldering iron head heated up in the rosin, and then use the soldering wire to the soldering iron head on the tin, and then after tinning, look for a strand of copper wire or suction line, and then let the soldering iron head in the copper parts of the wire to be repeatedly rubbed until the solder is full of the whole iron. The soldering iron is full of tin until the whole iron.
3. Adjust the temperature of the soldering iron to 300-360 degrees, insert the special soldering iron head repair paste, wait for a few seconds and then use the soldering wire to tin the soldering iron head.
