Welding components: various treatment methods and cause analysis of soldering iron head without Tin

Date：2022-03-14 17:31:59Views：1761

Soldering iron head is a supporting product of electric soldering iron, which is integrated. When using electric soldering iron for welding, it is often encountered that the soldering iron head is not stained with tin. If the soldering iron head is not stained with tin, the welding operation cannot be carried out. In the final analysis, the reason for the failure of the soldering iron head is that the soldering iron head is not tin coated and cannot be welded. The reasons for the failure of the soldering iron head are as follows:

1. Due to surface oxidation, first of all, after the soldering iron is heated, rub repeatedly in the rosin to remove the oxide skin, and then stick it with solder.

2. The method of "burning" the soldering iron head: turn on the soldering iron and heat it to the normal temperature, then grind off the black copper oxide on the surface of the soldering iron head with a file or sandpaper, dip it in Rosin immediately, and then hang tin.

3. It is recommended to use a cleaning sponge and a soldering iron head cleaner.

4. Ensure the quality of tin.

5. It is recommended to add tin protection when not in use.

6. It will cause rapid oxidation of the soldering iron head.

7. Selected flux. Neutral active flux is recommended.

8. Wash the soldering iron head more

The outer layer of the electric soldering iron head is wrapped with a metal layer that has affinity with the solder melt, which is the so-called long-life soldering iron head. Therefore, do not remove the surface oxide layer with tools such as a file. If the outer layer of metal is filed off, the soldering iron head will never be stained with solder and will be scrapped. It can only be replaced with a new one. In order to prevent the failure of soldering iron head, the following points should be paid attention to during use:

1) The newly purchased soldering iron head must be trimmed before use. The trimming methods of ordinary pure copper soldering iron head and long-life soldering iron head are different, which should be paid attention to.

2) When the soldering iron head is idle, the soldering iron head needs to be plated with solder, which is usually said to be placed with tin. The placement of tin can prevent the surface of soldering iron head from being oxidized and reduce the volatilization of copper soldering iron head coating.

3) It is forbidden to tap the table with a soldering iron head during use to avoid damaging the soldering iron head.

4) It is forbidden to polish the long-life soldering iron head with a file or sandpaper, but wipe it with a rag or wet fiber sponge.

The soldering iron shall be placed on the soldering iron frame, and the soldering iron head shall be placed downward. The heat will not be concentrated on the soldering iron head, which prolongs the service life of the soldering iron head.

A rectifier diode and a switch are connected in parallel and connected in series on the power line of the electric soldering iron to make such a device, that is, turn off the switch during the working gap, so that the soldering iron will not be cold, and the soldering iron head can be in the heat preservation state. When welding things, turn on and off, and then the soldering iron can work normally to ensure that the soldering iron head will not burn out.