Brazing is the joining of two materials by means of another which has a melting point lower than that of either of the two parent metals. There
are three types of brazing:
•Soldering, where the melting temperature is less than 450°C.
•Low Temperature Brazing, where the temperature of melting is between 450°C and 1000°C.
•High Temperature Brazing, where the melting temperature is greater than 1000°C
The accepted method of introducing the molten filler material is to apply the brazing alloy to the outer surface of the joint and to allow it to flow in and through the joint. There are three mechanisms that promote the flow of the brazing alloy - capillary attraction, temperature gradient and gravity.
A major difference between welding and brazing is the way joints are made.
welded on left, brazed on right
and yes i did cut and paste all this, although i knew what it meant i couldn't be arsed to type it all out !
[ September 12, 2002: Message edited by: Unity_Jon ]</p>