03 General Cutting Information - ESAB Cutmaster 60 Manual De Instrucciones

ESAB CUTMASTER 60
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 wear-
ing 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 opera-
tions after cutting.
Kerf Width
The width of the cut (or the width of material
removed 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
OPERATION
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 surfaces 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 cut-
ting 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. Re-
ducing 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
touching) 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.
300x5395