Cut Quality; Introduction; Cut Angle - ESAB PLASMARC Installation, Operation And Maintenance Manual

SECTION 4

4.2 Cut Quality

4.2.1 Introduction

NOTICE

4.2.2 Cut Angle

Drop
Part
Part
Precision Plasma with Integrated Flow Control Precision Plasma with Integrated Flow Control
Precision Plasma with Integrated Flow Control Precision Plasma with Integrated Flow Control
Causes affecting cut quality are interdependent.
Changing one variable affects all others. Determining a
solution may be difficult. The following guide offers
possible solutions to different undesirable cutting
results. To begin select the most prominent condition:
§
4.2.2 Cut Angle, negative or positive
§
4.2.3 Cut not flat, rounded or undercut
§
4.2.4 Surface roughness
§
4.2.5 Dross
Usually the recommended cutting parameters will give
optimal cut quality, occasionally conditions may vary
enough that slight adjustments will be required. If so:
•
Make small incremental adjustments when making
corrections.
•
Adjust Arc Voltage in 5 volt increments, up or down
as required.
•
Adjust cutting speed 5% or less as required until
conditions improve.
Before attempting ANY corrections, check cutting
variables with the factory recommended
settings/consumable part numbers listed in Process
Data.
Negative Cut Angle
Top dimension is greater than the bottom.
•
Misaligned torch
•
Bent or warped material
•
Worn or damaged consumables
•
Standoff low (arc voltage)
•
Cutting speed slow (machine travel rate)
OPERATION
4-3