Copper and steel brazing

Copper brazing is a complex process that only experienced locksmiths can do. As a rule, there is a need for it when laying heating systems and a variety of concealed culverts.

This is quite complex and requires special knowledge and skill, since when you connect copper pipes, you need to take into account a lot of nuances. It is especially important to observe the correct temperature regime in order not to overheat copper, as the soldering technology does not like it.

The process is as follows. Before the soldering begins, the pipes are inserted one into the other. Making sure that the inner has entered the depth no less than its own diameter, and the gap between them is about 0.01-0.02 mm, you can proceed to the procedure.

Heating is an indispensable and indispensable step when copper is being brazed. Both pipes are heated with a torch over the entire surface of the joint, but the solder is not necessary to heat.

At this stage, if you want to achieve a reliable connection that will last for many years, you need to control the temperature. In case of overheating, the metal begins to react with the solder and undesirable chemical compounds are formed. This can happen if the pipes are heated to the melting point.

But not only overheating is terrible, when there is a mounting of copper pipes by soldering. Underheating in this business can do no less harm, besides, it significantly shortens the life of the connection.

Adding solder when soldering should be started only if the outer and inner tubes are heated to the optimum temperature. If the outside is heated more than the internal, the solder will move to a stronger source of heat. If everything is done correctly, it will flow evenly and fill all the free space.

Check whether the surface is sufficiently heated, easy. If the solid rod of solder, contacting with copper, melts, then the temperature is optimal.

Copper brazing with brass

In the case where it is necessary to solder brass to a brass tube, the general approach is the same as with copper, but there are certain differences. First of all, these are changes in the surface preparation process. If you have copper soldering with brass on the agenda, a bit of flux is applied to the joint site. It wets the junction points and ensures good adhesion of the solder. But after finishing the procedure, it is necessary to remove the flux residues with the help of hot water and a brush, otherwise it can cause corrosion.

Steel with other metals

If you have some kind of steel part, to which you need to solder an element made of another metal, then this task is performed according to the rules voiced in the first parts. But here there are some nuances. For this kind of work you will need silver solder. It must be applied before the connection is heated. Then, during soldering, silver will begin to penetrate the gaps between the parts to be soldered. Do not forget to dip the rod with the flux into the flux before starting work. If this is not done, zinc will oxidize, and the results will not please you. After the soldering is completed, the flux must be carefully removed from the joints. Otherwise, corrosion is guaranteed.

9 soldering rules

If you want to warm up and clean the joint as much as possible, use a torch with a diminishing flame flame.

Be sure to clean the surface before soldering, do not forget about degreasing.

Checking the clearances and arrangement of parts must be the most thorough.

On the outer surface it is necessary to apply a little flux.

It is necessary to heat the details, but the main thing is not to overdo it.

Check the uniformity of the solder distribution with a burner.

Flux after the end of work should be washed off with a brush under the stream of water.

Heat the parts quickly, otherwise they are overheating.

If you want to stay healthy, provide ventilation during work.