CUTMASTER 40MM
OPERATION
Manual 0-5084
4T-6
• Torch parts wear
• Air quality
• Line voltage fluctuations
• Torch standoff height
• Proper work cable connection
4T.05 Gouging
!
WARNING
Be sure the operator is equipped with proper
gloves, clothing, eye and ear protection and
that all safety precautions at the front of this
manual have been followed. Make sure no
part of the operator’s body comes in contact
with the workpiece when the torch is acti-
vated.
Disconnect primary power to the system
before disassembling the torch, leads, or
power supply.
CAUTION
Sparks from plasma gouging can cause dam-
age to coated, painted or other surfaces such
as glass, plastic, and metal.
Check torch parts. The torch parts must cor-
respond with the type of operation. Refer to
Section 4T.07, Torch Parts Selection.
Gouging Parameters
Gouging performance depends on parameters
such as torch travel speed, current level, lead angle
(the angle between the torch and workpiece), and
the distance between the torch tip and workpiece
(standoff).
CAUTION
Touching the torch tip or shield cup to the
work surface will cause excessive parts wear.
Torch Travel Speed
NOTE
Refer to Appendix Pages for additional infor-
mation as related to the Power Supply used.
Optimum torch travel speed is dependent on current
setting, lead angle, and mode of operation (hand or
machine torch).
Current Setting
Current settings depend on torch travel speed,
mode of operation (hand or machine torch), and the
amount of material to be removed.
Pressure Setting
Even though the setting is within the specified range,
if the torch does not pilot well the pressure may need
to be reduced.
Lead Angle
The angle between the torch and workpiece depends
on the output current setting and torch travel speed.
The recommended lead angle is 35°. At a lead angle
greater than 45° the molten metal will not be blown
out of the gouge and may be blown back onto the
torch. If the lead angle is too small (less than 35°),
less material may be removed, requiring more pass-
es. In some applications, such as removing welds
or working with light metal, this may be desirable.
35°
Workpiece
Torch Head
Standoff Height
A-00941_AB
Gouging Angle and Standoff Distance
Standoff Distance
The tip to work distance affects gouge quality and
depth. Standoff distance of 1/8 - 1/4 inch (3 - 6
mm) allows for smooth, consistent metal removal.
Smaller standoff distances may result in a severance
cut rather than a gouge. Standoff distances greater
than 1/4 inch (6 mm) may result in minimal metal
removal or loss of transferred main arc.
Slag Buildup
Slag generated by gouging on materials such as car-
bon and stainless steels, nickels, and alloyed steels,
can be removed easily in most cases. Slag does not
obstruct the gouging process if it accumulates to the
side of the gouge path. However, slag build - up can
cause inconsistencies and irregular metal removal if
large amounts of material build up in front of the
arc. The build - up is most often a result of improper
travel speed, lead angle, or standoff height.
Summary of Contents for CutMaster 40MM
Page 6: ...This Page Intentionally Blank...
Page 24: ...CUTMASTER 40MM INTRODUCTION Manual 0 5084 2T 4 This Page Intentionally Blank...
Page 28: ...CUTMASTER 40MM INSTALLATION Manual 0 5084 3 4 This Page Intentionally Blank...
Page 34: ...CUTMASTER 40MM OPERATION Manual 0 5084 4 4 This Page Intentionally Blank...
Page 43: ...CUTMASTER 40MM Manual 0 5084 OPERATION 4T 9 This Page Intentionally Blank...
Page 56: ...CUTMASTER 40MM OPERATION Manual 0 5084 4T 22 This Page Intentionally Blank...
Page 69: ...CUTMASTER 40MM Manual 0 5084 PARTS LIST 6 3 7 5 6 3 4 2 Art A 07993_AB 1 8...
Page 71: ...CUTMASTER 40MM Manual 0 5084 PARTS LIST 6 5 A 07994_AB 1 4 2 3 5 6 7 8 9 10 12 11 10 13...
Page 74: ...CUTMASTER 40MM PARTS LIST Manual 0 5084 6 8 This Page Intentionally Blank...
Page 79: ...CUTMASTER 40MM Manual 0 5084 APPENDIX A 5 This Page Intentionally Blank...
Page 83: ...This Page Intentionally Blank...
