The area of base metal melted as determined on the cross section of a weld.
Welding Tech
The melting together of filler metal and base metal (substrate), or of base metal only, which results in coalescence.
Fused fluxes are melted ingredients which have been chilled and ground to a particular particle size. The advantage of this type flux is the low moisture pick-up and improved recycling capabilities.
Airborne solid particulate matter generated by the welding or cutting process. Fume particles are usually sub-micron in size and thus tend to remain airborne and drift with the air currents.
Heating of steels or iron alloys to above their critical temperature range, soaking at the annealing temperature until they are transformed to a uniform austenitic structure, followed by cooling at a predetermined rate, depending upon the type of alloy and structure required; in general the cooling rate is relatively slow.