Soldering technology

Progress in low-temperature soldering will be. Before you start connecting parts must be thoroughly cleaned, and then spend their tinkering, that is applied by rubbing, dip or electrolytically thin layer of tin on the surface of these parts. Then you need to connect the details so that between them there is a gap of 1-2 mm. Then on the surface of the compound must be applied flux. At the final stage of the molten solder with a burner fill the gap, and then applied to the surface of another metal around the gap.
When brazing technology is slightly different. First, you need to clean parts and tin in the same manner as in the low-temperature soldering. Then connect the parts must be carefully, carefully observing the guideline value of the gap. Followed by warm details in connection torch burners to the temperature of melting and spreading of solder (it will make the zone width of about 30 mm in both directions from the center of soldering) and apply flux. Next you need to melt the solder, and he put him in the flux, and then take some time. Once the flux on the solder melts, it is necessary to fill in the gap and solder for a good spreading it in the cavity gap several times to shift slightly heated above details. This is not to melt the solder in the burner flame.
Brazing should be done by flame normal composition (slight excess of fuel allowed). The specific power of the flame should reach (acetylene) for 60-70 stainless steel, carbon steel - 100-200, Copper - 150-200, brass - 100-120 l / chmm. Here it should be mentioned that under the specific power of the flame is meant hourly consumption in liters of acetylene per 1 mm thickness welded or subjected to soldering.
After the end of the soldering process should take the flame away, and leave the details connected to the natural cooling. While by no means impossible to try to speed up the cooling process. At the end, you need to clear the seam of flux soaked in warm water and a cloth.
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