L mm
L + 2 mm
L + 4 mm
L + 6 mm
oxidizing flame
neutral flame
carburizing flame
slightly carburizing flame
almost touch the work
be 10 mm away from the work
be 2 mm away from the work
be 5 mm away from the work
be more
of correct size
be less
not be affected
the metal will be cooled down
the kerf will be narrow
the kerf will be wide
cutting the metal will be failed completely