Owner's manual

TORCH DATA for Ultra-Cut 8-2 Manual 0-4828 Rev BA
Ohmic Sensing
Ohmic sensing is not recommended with water shield. Water on the plate interferes electrically with the ohmic
sensing circuit.
Direction of Cut
The plasma gas stream swirls as it leaves the torch to maintain a stable arc column. This swirl effect results in one
sideofacutbeingmoresquarethantheother.Viewedalongthedirectionoftravel,therightsideofthecutismore
squarethantheleft.
Right Side
Cut Angle
Left Side
Cut Angle
A-00512
Scrap
Clockwise
Counter-
Clockwise
Art # A-04182
Workpiece
Scrap
Side Characteristics Of Cut
Tomakeasquare-edgedcutalonganinsidediameterofacircle,movethetorchcounterclockwisearoundthe
circle.Tokeepthesquareedgealonganoutsidediametercut,movethetorchinaclockwisedirection.
Underwater Cutting
Cuttingonawatertableeitherunderwaterorwiththewatertouchingtheplateorwithawatermufersystemisnot
recommended.Ifawatertableisusedthewaterlevelmustbeaminimumof4inches/100mmfromthebottom
oftheplate.Failuretofollowthisrecommendationcouldresultinpoorcutqualityandshortconsumablepartslife.
Bevel Cutting Definitions
Bevel Angle The angle between the center line of the torch and a line that is perpendicular to the work-
piece.Ifthetorchisperpendiculartotheworkpiece,theBevelAngleiszero.Themaximum
Bevel Angle is 45°.
Nominal Thickness The vertical thickness of the workpiece.
Effective Thickness The length of the cut edge, or the distance the arc travels through the material while cutting.
EffectiveThicknessisequaltothenominalthicknessdividedbythecosineofthebevel
angle. Effective Thicknesses are listed in the cut chart.
Clearance The vertical distance from the lowest point of the torch to the surface of the workpiece.
Effective Cut Height The linear distance from the center of the torch outlet to the workpiece surface along the
torch center-line. A range of Effective Cut Height distances are listed in the cut chart. The
smallestnumberisforastraightcut(bevelangle=0°).Thelargestnumberisfora45°bevel
cutwithaclearanceof2mm(0.125in).
Arc Voltage The Arc Voltage setting is dependent on the Bevel Angle and the setup of the cutting system.
The Arc Voltage setting on one system may be different from a second system even if the
workpiece is the same thickness. The arc voltages for bevel cutting are not supplied in the
bevel cut charts.