The question of how to solder is not for modern home craftsmen and techies today. But when it comes down to it, it turns out like in that joke about Leo Tolstoy, who loved to play the balalaika, but, unfortunately, could not.
Since the craftsmen learned how to smelt lead and tin, there have been tinkers who solder metal blanks.
Connected before soldering cleaned and degreased with gasoline. The tip of a heated soldering iron is dipped in rosin or ammonia. If a faint smoke appears, then the soldering iron is ready to work.
Rosin cleans the soldering iron tip from metal oxides. The cleaned tip of the soldering iron is dipped in solder (usually tin) and held there until it is covered with a film. This film is leveled over the surface of the joint, i.e. "tinker" him. Then the bulk of the solder is transferred to the junction, which is necessary to connect the workpieces.
And how to solder without using a soldering iron? You can use chemical compounds that can release "solder" when their temperature rises. These are solder pastes. They are indispensable for soldering in hard-to-reach places. The paste is applied to the junction andwarming up.
Now let's see how to solder aluminum. This is not easy to do, since when the aluminum surface is cleaned, an oxide film is formed again. The presence of such a film reduces the strength of the connection. Therefore, immediately after cleaning the surface of the solder joint, a passive flux is poured onto the aluminum blank. It can be rosin, glycerin and any of the fatty acids.
Soldering of aluminum is carried out with a powerful soldering iron. If the flux is chosen correctly, then aluminum is easily soldered. Copper wire can be soldered to its tinned surface without any problems.
There is another way: the surface layer of the aluminum billet is cleaned, smeared with rosin, sprinkled with copper powder. After this operation, parts can be soldered with ordinary tin solder.
Not so long ago, metal pipes were replaced by plastic products. How to solder plastic pipes? This is not at all difficult to do if you have the necessary tool for welding them.
Nozzles of the required sizes are attached to the heating apparatus. The regulator sets the temperature not higher than 2700 Celsius.
While the nozzles on the welding machine are heating up, pipes of the required length are being prepared and cut. Burrs and irregularities must be removed, then a mark equal to the depth of the fitting is placed on the pipe. After heating, the pipe will enter the fitting to the length you measured. The surfaces to be welded are degreased. Now it's time to heat up and solder.
On the heated nozzle located on one sidewelding machine, the fitting is first put on, since it has thicker walls, and this requires prolonged heating. The fitting must be firmly seated on the nozzle. On the other side of the welding machine, a plastic pipe "sits" on the second nozzle.
The heating time of the pipe and fitting is indicated in the instructions for the welding machine. When heating the parts to be joined, try not to turn them, as this may cause the plastic to shrink.
The heating time is maintained, then the parts are removed from the nozzles, and the pipe is slowly inserted into the fitting to the mark made earlier. It is impossible to twist the connected parts.
Now you know how to solder plastic pipes.
