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1 Copyright 2004 Lincoln Global Inc. Oxy Fuel Welding Troubleshooting.

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1 Copyright Copyright 2004 Lincoln Global Inc. 2004 Lincoln Global Inc. Oxy Fuel Welding Oxy Fuel Welding Troubleshooting Troubleshooting
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11Copyright Copyright 2004 Lincoln Global Inc. 2004 Lincoln Global Inc.

Oxy Fuel WeldingOxy Fuel Welding

TroubleshootingTroubleshooting

22

Copyright Copyright 2004 Lincoln Global Inc. 2004 Lincoln Global Inc.

Carburizing FlameCarburizing Flame

Neutral Flame Neutral Flame

Oxidizing FlameOxidizing Flame

Welding Flame TypesWelding Flame Types

33

Copyright Copyright 2004 Lincoln Global Inc. 2004 Lincoln Global Inc.

OKTorch High

Torch Low

Torch Slow

Torch Fast

Weld QualityWeld Quality

44

Copyright Copyright 2004 Lincoln Global Inc. 2004 Lincoln Global Inc.

TROUBLESHOOTING THE OFW PROCESS

Trouble Probable Cause RemedyWelding Tip Popping * Tip is operated at too * Increase pressures,

low heat value and consult appropriate tip chart

* Tip too large * Use next smaller size tip* Too close to work * Raise tip further from work

Flames not clearly de- * Dirty tip * Clean with tip cleanerfined, smooth or even or replace tipRegulator not holding * Defective regulator * Return unit for repair orconstant pressure replacementLeak around needle valve * Packing nut loose * Tighten packing nutDifficult to light * Too much pressure * Consult appropriate

tip chart

Welding TroubleshootingWelding Troubleshooting

55

Copyright Copyright 2004 Lincoln Global Inc. 2004 Lincoln Global Inc.

Carburizing FlameCarburizing Flame

Neutral Flame Neutral Flame

Oxidizing FlameOxidizing Flame

Brazing Flame TypesBrazing Flame Types

66

Copyright Copyright 2004 Lincoln Global Inc. 2004 Lincoln Global Inc.

Low Pressure FlameLow Pressure Flame

Medium Pressure Flame Medium Pressure Flame

High Pressure FlameHigh Pressure Flame

Soldering Flame TypesSoldering Flame Types

77

Copyright Copyright 2004 Lincoln Global Inc. 2004 Lincoln Global Inc.

Carburizing FlameCarburizing Flame

Neutral Flame Neutral Flame

Oxidizing FlameOxidizing Flame

Neutral Flame with Oxygen Cutting StreamNeutral Flame with Oxygen Cutting Stream

Cutting Flame TypesCutting Flame Types

88

Copyright Copyright 2004 Lincoln Global Inc. 2004 Lincoln Global Inc.

Cut QualityCut Quality

Good Cut QualityGood Cut Quality Poor Cut QualityPoor Cut Quality

99

Copyright Copyright 2004 Lincoln Global Inc. 2004 Lincoln Global Inc.

Dirty TipDirty Tip

Dirty TipDirty Tip

1010

Copyright Copyright 2004 Lincoln Global Inc. 2004 Lincoln Global Inc.

Extremely FastExtremely Fast Extremely SlowExtremely Slow

SpeedSpeed

Slightly Too SlowSlightly Too SlowSlightly Too FastSlightly Too Fast

1111

Copyright Copyright 2004 Lincoln Global Inc. 2004 Lincoln Global Inc.

Too HighToo High

Too LowToo Low

Tip HeightTip Height

1212

Copyright Copyright 2004 Lincoln Global Inc. 2004 Lincoln Global Inc.

Too Hot Pre-HeatToo Hot Pre-Heat

Too Much Cutting OxygenToo Much Cutting Oxygen

OtherOther

1313

Copyright Copyright 2004 Lincoln Global Inc. 2004 Lincoln Global Inc.

Quality CutQuality Cut Extremely FastExtremely Fast

Extremely SlowExtremely SlowIrregular PressureIrregular Pressure

AWS Cut QualityAWS Cut Quality

1414

Copyright Copyright 2004 Lincoln Global Inc. 2004 Lincoln Global Inc.

   TROUBLESHOOTING THE OFC PROCESS

Trouble Probable Cause RemedyCutting Tip Popping * Too loose * Tighten tip nut

* Nicked seat * Replace tip or repair seat in torch

Flames not clearly de- * Dirty tip * Clean with tip cleanerfined, smooth or even or replace tipRegulator not holding * Defective regulator * Replace or repairconstant pressure regulatorLeak around needle valve * Packing nut loose * Tighten packing nutDifficult to light * Too much pressure * Consult appropriate

tip chartFlame change when cutting * Oxygen needle valve * Open oxygen valve wide

on torch handle partly open closed* Oxygen cylinder * Replace cylinder with almost empty full one* Defective regulator * Replace regulator

TroubleshootingTroubleshooting


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