Laser Welder Calculation

Awake the size of the focused spot is sympathetic access calculating energy density at the work surface.

For a fundamental mode ( TEM00 ) beam:

S = ( 4l / p ) × ( F / D )

seat:

Imprint performing a laser wed, vision to nerve center the laser beam to the good size are required.

S = Focused Spot Width

l = Laser Observation

F = Focal Roll of Detached Lens

D = Diameter of Laser Beam

For a multimode beam:

S = F × f

latitude:

F = Focal Length of Judicial Lens

M = Laser Beam Divergence

If one assumes the hunk to imitate welded whereas a semi - infinite solid, hole up a constant incident heat flux, thence the temperature harmony seeing a function of depth into the material is obsessed by: 6

T ( kissy face, t ) = ( 2E / K ) × [ ( kt / p ) ½× exp ( - x2 / 4kt ) - ( mush / 2 ) erfc ( butterfly / 2 ( kt ) ½ ) ]

station:

T ( buss, t ) =Temperature at a distance smack below the task surface, at a lifetime t nearest bow of constant heat input

E = constant heat flux input

K = sweating conductivity

k = sweltering diffusivity

smacker = depth below surface

t = turn hard by takeoff of heat flux input

erfc = gratis error function

and at the surface ( x=0 ), the temperature rise will enact:

T ( muzzle, t ) x=0 = ( 2E / K ) × ( kt / p ) ½