03 General Cutting Information - ESAB CUTMASTER 60i Operating Manual

ESAB CUTMASTER 60i
Kerf Width
Top
Spatter
Dross
Build-Up
Cut Quality Characteristics
Cut Surface
The desired or specified condition (smooth or rough)
of the face of the cut.
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.
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.
Bottom Dross Buildup
Molten material which is not blown out of the cut
area and resolidifies on the plate. Excessive dross
may require secondary cleanup operations after
cutting.
Kerf Width
The width of the cut (or the width of material re-
moved during the cut).
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.
4T-2
Cut Surface
Bevel Angle
Top Edge
Rounding
Cut Surface
A-00007
Drag Lines
4T.03 General Cutting Information
WARNING
Disconnect primary power at the source
before disassembling the power supply,
torch, or torch leads.
!
Frequently review the Important Safety
Precautions at the front of this manual. Be
sure the operator is equipped with proper
gloves, clothing, eye and ear protection.
Make sure no part of the operator's body
comes into contact with the workpiece
while the torch is activated.
CAUTION
!
Sparks from the cutting process can cause
damage to coated, painted, and other sur-
faces such as glass, plastic and metal.
NOTE!
Handle torch leads with care and protect
them from damage.
Piloting
Piloting is harder on parts life than actual cutting
because the pilot arc is directed from the electrode
to the tip rather than to a workpiece. Whenever
possible, avoid excessive pilot arc time to improve
parts life.
Torch Standoff
Improper standoff (the distance between the torch tip
and workpiece) can adversely affect tip life as well as
shield cup life. Standoff may also significantly affect
the bevel angle. Reducing standoff will generally
result in a more square cut.
Edge Starting
For edge starts, hold the torch perpendicular to the
workpiece with the front of the tip near (not touch-
ing) the edge of the workpiece at the point where the
cut is to start. When starting at the edge of the plate,
do not pause at the edge and force the arc to "reach"
for the edge of the metal. Establish the cutting arc
as quickly as possible.
OPERATION Manual 0-5488