(1) Compound, which combines during refining with impurities in molten metals. (2) Chemical that isolates heated metal from the oxygen in the air, aiding in the removal of oxidation during welding, soldering or brazing and allowing better metal flow in the joint.
Flux brush
Flux-cored arc welding
Arc welding that is done by feeding filler metal and flux through the enter of the electrode from which the arc travels to the base metal.
Flux-cored electrode
Hollow consumable welding electrode that has a flux core.
Fly ash
The fine particulate matter entrained in the flue gases of a combustion power plant.
Fly cutter
Cutting tool, attached to a shaft or arbor, which is used to cut circular sections out of material. A drill motor turns the arbor making the bit revolve around the arbor. The adjustable arm can change the diameter of the hole that can be cut, by increasing or decreasing the distance of the bit from the arbor.
Fly rafter
Also referred to as a barge rafter, it is the rafter at the gable end that's attached to the roof sheathing above and the lookout blocks, which are behind the rafter.
Flying levels
An approximation of elevations made when surveying.
Flywheel
Wheel that is attached to a rotating shaft to reduce fluctuations or pulsations in its rotation by the addition of weight.
Flywheel effect
The damping of interior temperature fluctuations by massive construction.
