Modern Welding: Chapter 13--Oxyfuel Gas Welding Exam
#1 Question with verified answers
Backfire - √√Short "pop" of the torch flame followed by extinguishing of the flame
or continued burning of the gases.
Brazing - √√Making an adhesion connection using a minimum amount of an alloy
that melts above 840°F (450°C). The alloy flows by capillary action between close-
fitting parts.
Continuous Weld Pool - √√A molten pool of metal that is carried along the seam
of the parts to be welded together.
Cracking - √√The action of opening a valve slightly, then closing it immediately.
Cracking is used to blow out any dust in the valve orifice.
Crowned - √√Built up above the surface of the parent metal.
Eye of the Weld Pool - √√A bright flake of oxide on the surface of the weld pool.
Oxidize - √√To combine with oxygen. A substance burns when it is rapidly
oxidized.
Oxyacetylene - √√Oxygen and acetylene.
Oxyfuel gas welding (OFW) - √√Method of welding that combines and burns
oxygen and a fuel gas to create the heat required to melt and fuse metal.
#1 Question with verified answers
Backfire - √√Short "pop" of the torch flame followed by extinguishing of the flame
or continued burning of the gases.
Brazing - √√Making an adhesion connection using a minimum amount of an alloy
that melts above 840°F (450°C). The alloy flows by capillary action between close-
fitting parts.
Continuous Weld Pool - √√A molten pool of metal that is carried along the seam
of the parts to be welded together.
Cracking - √√The action of opening a valve slightly, then closing it immediately.
Cracking is used to blow out any dust in the valve orifice.
Crowned - √√Built up above the surface of the parent metal.
Eye of the Weld Pool - √√A bright flake of oxide on the surface of the weld pool.
Oxidize - √√To combine with oxygen. A substance burns when it is rapidly
oxidized.
Oxyacetylene - √√Oxygen and acetylene.
Oxyfuel gas welding (OFW) - √√Method of welding that combines and burns
oxygen and a fuel gas to create the heat required to melt and fuse metal.
