How brazing works
The principle by which the filler metal is drawn through the joint to create this bond is capillary action. In a brazing operation, you apply heat broadly to the base metals. The filler metal is then brought into contact with the heated parts. It is melted instantly by the heat in the base metals and drawn by capillary action completely through the joint.
This, in essence, is how brazed joint made.
what are the advantages of a joint made this way?
How brazing works
A brazed joint is made in a completely different way from a welded joint.
The first big difference is in temperature. Brazing doesn’t melt the base metals. So brazing temperatures are in variably lower than the melting points of the base metals. And, of course, always significantly lower than welding temperatures for the same base metal.
If brazing doesn’t fuse the base metal, how does it join them?
It joins them by creating a metallurgical bond between the filler metal and the surfaces of the two metals being joined.
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