operation - Victor Technologies
operation - Victor Technologies
operation - Victor Technologies
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
3.4 CUT QUALITY<br />
Cut Surface<br />
Bevel Angle<br />
Top-Edge Rounding<br />
Dross Build-up/<br />
Top Spatter<br />
Kerf Width<br />
Nitride Build-up<br />
Cut quality requirements differ depending on application. For<br />
instance, nitride build-up and bevel angle may be major factors<br />
when the surface will be welded after cutting. Dross-free cutting<br />
is important when finish cut quality is desired to avoid a secondary<br />
cleaning <strong>operation</strong>. The following cut quality characteristics<br />
are illustrated in Figure 3-C below:<br />
The condition (smooth or rough) of the face of the cut.<br />
The angle between the surface of the cut edge and a plane<br />
perpendicular to the surface of the plate. A perfectly perpendicular<br />
cut would result in a 0° bevel angle.<br />
Rounding on the top edge of a cut due to wearing from the<br />
initial contact of the plasma arc on the workpiece.<br />
Molten material which is not blown out of the cut area and resolidifies<br />
on the plate. Top spatter is dross which accumulates<br />
on the top surface of the workpiece. Excessive dross may<br />
require secondary clean-up <strong>operation</strong>s after cutting.<br />
The width of material removed during the cut.<br />
Nitride deposits which may remain on the surface of the cut<br />
when nitrogen is present in the plasma gas stream. Nitride<br />
buildups may create difficulties if the material is welded after<br />
the cutting process.<br />
Top<br />
Spatter<br />
Dross<br />
Build-Up<br />
Kerf Width<br />
Cut Surface<br />
Drag Lines<br />
Cut Surface<br />
Bevel Angle<br />
Top Edge<br />
Rounding<br />
Figure 3-C Cut Quality Characteristics<br />
A-00007<br />
OPERATION 10 Manual 0-2462