CHLORIDE FLUX FOR SOLDERING Russian patent published in 2016 - IPC B23K35/363 

FIELD: metallurgy.

SUBSTANCE: invention can be used for low-temperature soldering of metals and alloys by solders of various grades in a wide temperature range. Chloride flux contains the following component ratio, wt%: zinc chloride 33-41, ammonium chloride 4-12, hydrochloride of diethylamine 28-30, oxalic acid 15, glycerol 0-5, water-the rest. In the composition of flux there are no toxic components. Flux has a wide temperature range of fluxing activity at low steam-, gas and smoke emission, this provides soldering of copper and nickel and their alloys, iron and steel of various grades, up to stainless steel solders with fusion temperature of 60-300 °C, for example, bismuth or with high content of lead.

EFFECT: residues of flux are removed with water after soldering.

1 cl, 2 tbl