Mazak STX SC L PLUS CONTROL Training Manual page 62

STAINLESS STEEL CONTINUED
SYMPTOM: DROSS / SLAG OCCURS ON THE BOTTOM EDGE OF THE CUT PART
DEFINITION OF DROSS:
ARE THE CUTTING PARAMETERS
SET TO A PROVEN SPECIFICATION
EITHER USED IN THE PAST OR
TAKEN FROM MAZAK CUTTING
DATA CHARTS?
YES
IS THE SET UP CORRECT?
- FOCUS
- NOZZLE GAP
- NOZZLE ORIFICE SIZE
- ASSIST GAS TYPE
YES
IS THE NOZZLE ORIFICE
DAMAGED, BLOCKED BY
SPLATTER OR BEAM
CENTERING OFF?
NO
IS THE DESIRED ASSIST
GAS PRESSURE ACTUALLY
OUTPUT? CHECK THE
DIGITAL OR ANALOG GAUGE
AT THE TORCH.
YES
IS THE FOCUS LENS DIRTY
OR DAMAGED?
NO
IF LONG SPIKES OF DROSS
OCCUR, TRY THE FOLLOWING:
- INCREASE THE FEEDRATE
- INCREASE ASSIST GAS PRESSURE
- LOWER GAP (G87)
AN ACCUMULATION OF EXCESS MATERIAL FROM THE
CUTTING PATH, NOT REMOVED BY THE ASSIST GAS.
NO
IF DROSS STILL OCCURS
NO/?
IF DROSS STILL OCCURS
YES
NO
YES
OR FOCUS
SET THE CUTTING PARAMETERS
TO THE CLOSEST AVAILABLE
CUTTING CONDITION.
SET UP FOR THE CLOSEST
AVAILABLE CUTTING CONDITION.
CORRECT THE CONDITION OF
THE NOZZLE.
FOR G88 CHECK THE FOLLOWING:
- AIR PRESSURE AT THE CHILLER
- SECONDARY PRESSURE OF
ASSIST GAS REGULATOR
(SEE "ROUTINE INSPECTIONS")
- REMAINING GAS IN CYLINDER
- CALIBRATION OF PROG. REGULATOR
FOR M54 ADJUST THE MANUAL REGULATOR
CLEAN OR REPLACE THE LENS.
IF SMALL BEADS OF DROSS OCCUR,
TRY THE FOLLOWING:
- SLIGHTLY DECREASE THE ASSIST GAS PRESSURE
- SLIGHTLY DECREASE THE FEEDRATE
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