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Oxy Fuel Welding. Troubleshooting. Welding Flame Types. Carburizing Flame. Neutral Flame. Oxidizing Flame. Weld Quality. Torch High. Torch Low. Torch Slow. Torch Fast. OK. Welding Troubleshooting. Brazing Flame Types. Carburizing Flame. Neutral Flame. Oxidizing Flame. - PowerPoint PPT Presentation
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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
