Working with metals is necessary not only for workers in production, but also for ordinary people at home or in their own workshops. Craftsmen, making a variety of things - from jewelry to technical devices - often use soldering, connecting wires and metal parts, and often they are faced with the need to solder brass parts.
It is necessary
- - gas-burner,
- - graphite crucible,
- - silver,
- - copper,
- - boric acid,
- - borax,
- - asbestos base.
Instructions
Step 1
Tin soldering, familiar to everyone, is not suitable for brass - it leaves a noticeable mark, and also has a weak strength. In brass brazing it is worth using another, more reliable method. In order to solder brass parts, you need a gas torch, as well as a graphite crucible, silver, copper, boric acid, borax, and an asbestos base.
Step 2
Make brass solder from one part copper and two parts silver by mixing and melting them together on a gas burner in a graphite crucible. Dip the crucible into cold water and remove the melted and solidified solder. Flatten it and cut or sharpen the solder chips using a coarse file.
Step 3
From twenty grams of borax powder and twenty grams of boric acid, make a flux by pouring 250 ml of water into the powder mixture.
Step 4
Place the brass parts you want to solder on an asbestos base and moisten with boric acid and borax flux. Then sprinkle the joint of the parts with the pieces of solder that you sharpened beforehand, then begin to gently heat the joint with a gas torch.
Step 5
Gradually bring the heating temperature to seven hundred degrees. Watch the temperature regime of the burner - do not overheat the brass, so as not to damage the parts. If you are soldering large and massive parts, heat them gradually; if the parts are small and thin, remember that they heat up very quickly. This soldering method is more complicated than conventional tin soldering, but it is more durable and bonded to brass parts.
