Thermal Dynamics PCH-100XL, Инструкция по эксплуатации

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Manual 0-2583 19 OPERATION
Kerf Width
Cut Surface
Bevel Angle
Top Edge
Rounding
Cut Surface
Drag Lines
Dross
Build-Up
Top
Spatter
A-00007
Figure 4-3 Cut Quality Characteristics
A. Cut Surface
The desired or specified condition (smooth or rough)
of the face of the cut.
B. Nitride Build-Up
Nitride deposits can be left on the surface of the cut
when nitrogen is present in the plasma gas stream.
These buildups may create difficulties if the material
is to be welded after the cutting process.
C. Bevel Angle
The angle between the surface of the cut edge and a
plane perpendicular to the surface of the plate. A per-
fectly perpendicular cut would result in a 0° bevel
angle.
D. Top-Edge Rounding
Rounding on the top edge of a cut due to wearing
from the initial contact of the plasma arc on the work-
piece.
E. Bottom Dross Build-up
Molten material which is not blown out of the cut area
and re-solidifies on the plate. Excessive dross may
require secondary clean-up operations after cutting.
F. Kerf Width
The width of the cut (or the width of material removed
during the cut).
G. Top Spatter (Dross)
Top Spatter or dross on the top of the cut caused by
slow travel speed, excess cutting height, or cutting tip
whose orifice has become elongated.
H. Various Materials and Thicknesses
The following table defines the cut quality on various
materials and thicknesses:
Table 4-A Cut Quality on Va rious Materials
M aterial Type of Type of Cut
Thickness M aterial Gas Character istics
Carbon S teel A ir Good - E xcellent
Gage
Nitrogen Good
to
S tainless A ir Good - E xcellent
1 inch
Nitrogen Good
(25.4m m ) A lum inum A ir Good - E xcellent
Nitrogen Good
Description of Cut Characteristics:
Excellent - Minimum bevel (0 - 4°), minimum kerf (2 x
tip orifice diameter), little or no dross, smooth
cut surface.
Good - Slight bevel (0 - 10°), slightly wider kerf (2-1/2 x
tip orifice diameter), some dross (easily removed),
medium-smooth cut surface, slight top edge
rounding.
4.06 Operating the System
WARNINGS
Disconnect primary power at the source before dis-
assembling the power supply, torch, or torch leads.
Frequently review the Important Safety Precau-
tions at the front of this manual. Be sure the op-
erator is equipped with proper gloves, clothing, eye
and ear protection. Make sure no part of the
operator’s body comes into contact with the work-
piece while the torch is activated.
CAUTION
Sparks from the cutting process can cause damage
to coated, painted, and other surfaces such as glass,
plastic and metal.
NOTE
Handle torch leads with care and protect them from
damage.