the production of home appliances aluminum and its alloys: silumin, duralumin - used very widely.These materials perform and body products, and wires for various devices.
What to do if you need to solder aluminum component or soldered wire fallen off of this lightweight material?Brazing metals in general, and aluminum in particular - is usually a trivial task that requires expertise.Both the aluminum and its alloys have involving unpleasant feature.Under the influence of atmospheric oxygen from the metal parts are covered by a solid oxide film, due to which the aluminum brazing becomes a daunting task.After oxide prevents reliable connections soldered parts.In this article you can read about how to correctly perform the soldering of aluminum at home with solder, which include lead: POS 50 POS 61 and POS 90.
first method.If you need to solder together a pair of wires consisting of aluminum, to be a good start for them to tin.At the ends of the wires are soldered imposed rosin, is enclosed below Abrasive medium rooms and a hot soldering iron (which must also be pre-zaludit) wire is pressed against this skin.In the process you need to constantly add rosin to remove the soldering iron from the metal in any case should not be.This operation is repeated many times, until you can zaludit wires properly.Then you can start soldering.If instead of rosin used oil alkaline cleaning weapons or mineral that lubricates sewing machine, and the preparation process, the aluminum brazing itself will not cause difficulties.Of course, if you have at least some experience in these matters.
second method.Well it turns out to solder aluminum sheets.In place of the seam is applied rosin, which chop small metal shavings, then the seam is necessary to pass several times grassing hot soldering iron, constantly adding solder.The meaning of this method lies in the fact that the chips will begin to scratch the sharp corners and rip off the oxide film, and when it does not interfere, tin solder is well connected to the foundation, soldering and brazing aluminum becomes a simple task.
The main thing - remember the rule: the thicker the aluminum sheet, the stronger must be the soldering iron.If you face a problem to weld thin sheets, a soldering iron 50W quite cope.In the case where the thickness of a sheet of a millimeter or a little more, you'll need a soldering iron of 90 watts.If you need the aluminum brazing sheets, which consist of two-millimeter thick plates, it is necessary to preheat the solder metal, then apply the flux and then start the process of sealing.In the second method, like the first, may be used instead of flux based on mineral oil.
third option.Before proceeding directly to the soldering should be performed on the items you have in the work process "copper plating".For these purposes fit galvanizing plant, but if it is not at hand, you can do without it.Start by applying a concentrated copper sulfate in the trimmed sandpaper soldering place.Then, connect to the negative terminal parts batteries or battery.Positive move the contact to the copper wire fixed to the pile of the toothbrush so that it does not touch the surface of the aluminum due to the projecting bristles.After some time at the point the details that you are going to solder, postponed a thin layer of copper.It must be washed with water, dried, and then zaludit standard way (using a soldering iron).
