Kingbo Flux RMA 218
The basic mechanism of soldering is controlled by the solubility of 2 metals together. For the formation of an inter metallic bond, the metallic surfaces must be free of any contaminants, and particularly metal oxides. In soldering, the function of flux is to chemically react with oxides and quickly produce a fresh, oil free, and oxide free surface at soldering temperatures so that the inter metallic bond can take place.
Fluxes can be generally classified into 4 types based on their constituents and activity.
0.1 Inorganic acid
0.2 Organic acid
0.4 No clean
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