Standoff And Cut Quality - ESAB ESP-150 Manual De Instrucciones

SecTION 4
4.3

STaNDOff aND cuT QualITY

Standoff (Arc Voltage) has a direct influence on cut quality and squareness . It is recommended that prior to
cutting, that all cutting parameters are set to the manufacturer's suggested conditions . Refer to the Process
Tables for recommendations . A sample cut should be made using actual part material followed by close
examination of the part .
If the cut face of the part has excessive bevel or rounded top edge, it may be that the standoff is set too high .
When standoff is controlled by an arc voltage height control, reducing the arc voltage setting will reduce
the standoff .
Lower the standoff until the excessive bevel or rounded top edge disappears . The characteristics of plasma
cutting hinder production of a perfectly square cut . On material thicknesses of 1/4 inch or greater, a standoff
too close may result in a negative cut angle .
STANDOFF
LAG LINES
fig. 17 - cut Quality
POSITIVe (+) cuT aNgle
Bottom dimension "B"
is greater than dimen-
sion "A"
NegaTIVe (-) cuT aNgle
Bottom dimension "B"
is less than dimension
"A"
fig. 18 - cut angle
31
OPeRaTION
ARC
VOLTAGE
a
b
a
b