Thermal Dynamics Ultra-Cut 300 XT, Operating Instructions Manual

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ULTRA-CUT 400 XT
Manual 0-5275 OPERATION 4-11
NOTE!
When switching gases between operations, allow enough
purge time to clear the prior gas from the torch leads.
!
CAUTION
While nothing prevents the operator from switching gases during piloting or cutting
it is not recommended to do so. If the operator switches gases during piloting or
cutting, the power supply will finish the cut with the first gas chosen. Then the gas
control will switch to the new gas. Switching gases during piloting or cutting may
damage torch parts, torch leads, the control module, or the piece being cut.
Cut Quality
Cut quality requirements differ depending on application. For instance, nitride build-up and bevel angle may be major factors when
the surface will be welded after cutting. Dross-free cutting is important when finish cut quality is desired to avoid a secondary
cleaning operation. Cut quality will vary on different materials and thicknesses.
Right Side
Cut Angle
Left Side
Cut Angle
A-00512
Kerf Width
Cut Surface
Bevel Angle
Top Edge
Rounding
Cut Surface
Drag Lines
Dross
Build-Up
Top
Spatter
A-00007
Cut Surface
The condition (smooth or rough) of the face of the cut.
Bevel Angle
The angle between the surface of the cut edge and a plane perpendicular to the surface of the plate. A perfectly perpendicular
cut would result in a 0° bevel angle.
Top-Edge Rounding
Rounding on the top edge of a cut due to wearing from the initial contact of the plasma arc on the workpiece.
Dross Build-up and Top Spatter
Dross is molten material which is not blown out of the cut area and re-solidifies on the plate. Top spatter is dross which
accumulates on the top surface of the workpiece. Excessive dross may require secondary cleanup operations after cutting.
Kerf Width
The width of material removed during the cut.
Nitride Build-up
Nitride deposits which may remain on the cut edge of the carbon steel when nitrogen is present in the plasma gas stream.
Nitride buildups may create difficulties if the steel is welded after the cutting process.