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7/31/2019 QA Welding
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WELDING TECHNIQUES
BY:-
Sagar
Nimish
AmitSwapnil
Jigar
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Welding Technology
Gas Welding Arc WeldingResistance
Welding
Chemical
Welding
Advanced
Techniques
Oxy-
Acetaline
Oxy-Butane
Oxy-LPG
SMAW
GTAW
SAW
FCAW
GMAW
ESSC
Spot
Seam
Edge
ThermitElectron
Beam
Ion Beam
Laser Beam
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Welding Technology
Gas Welding Arc WeldingResistance
Welding
Chemical
Welding
Advanced
Techniques
Oxy-
Acetaline
Oxy-Butane
Oxy-LPG
SMAW
GTAW
SAW
FCAW
GMAW
ESSC
Spot
Seam
Edge
ThermitElectron
Beam
Ion Beam
Laser Beam
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Advantages Disadvantages
It is inexpensive. Any traces of
carbon left in theweld will weaken it.
Requires very littlespecialized
equipment.
If flame distance isnot proper it can
burn through the
metal instead of
welding it.
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Welding Technology
Gas Welding Arc WeldingResistance
Welding
Chemical
Welding
Advanced
Techniques
Oxy-
Acetaline
Oxy-Butane
Oxy-LPG
SMAW
GTAW
SAW
FCAW
GMAW
ESSC
Spot
Seam
Edge
ThermitElectron
Beam
Ion Beam
Laser Beam
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Advantages Disadvantages
Process is
Automated.
Cannot be used for
joining two metals.Only used for
cladding.
Since a strip is used,every pass covers
more area than a
wire cladding
would.
-
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Welding Technology
Gas Welding Arc WeldingResistance
Welding
Chemical
Welding
Advanced
Techniques
Oxy-
Acetaline
Oxy-Butane
Oxy-LPG
SMAW
GTAW
SAW
FCAW
GMAW
ESSC
Spot
Seam
Edge
ThermitElectron
Beam
Ion Beam
Laser Beam
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Advantages Disadvantages
Process is
automated andvery fast.
High initial cost of
equipment
Weld requires nofiller metal and is
economical.
Lower tensile andfatigue strength.
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Welding Technology
Gas Welding Arc WeldingResistance
Welding
Chemical
Welding
Advanced
Techniques
Oxy-
Acetaline
Oxy-Butane
Oxy-LPG
SMAW
GTAW
SAW
FCAW
GMAW
ESSC
Spot
Seam
Edge
ThermitElectron
Beam
Ion Beam
Laser Beam
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Advantages Disadvantages
Heat required for welding is
obtained from chemical
reaction and hence noelectricity is required.
Process is applicable only to
ferrous metal parts.
Process can be carried out
where sophisticated
equipment and power supply
cannot be obtained.
Process consumes more time.
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Welding Technology
Gas Welding Arc WeldingResistance
Welding
Chemical
Welding
Advanced
Techniques
Oxy-
Acetaline
Oxy-Butane
Oxy-LPG
SMAW
GTAW
SAW
FCAW
GMAW
ESSC
Spot
Seam
Edge
ThermitElectron
Beam
Ion Beam
Laser Beam
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Advantages Disadvantages
Narrow Heat Affected zone. High equipment cost and that
of vacuum chamber. Size of
work is limited due torequirement of vacuum.
Can be used to weld in
applications where the reverseside cannot be welded.
Rapid solidification can cause
cracks in some metals and X-rays are produced during the
process which can be
dangerous.
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Welding Technology
Gas Welding Arc WeldingResistance
WeldingChemical
Welding
Advanced
Techniques
Oxy-
Acetaline
Oxy-Butane
Oxy-LPG
SMAW
GTAW
SAW
FCAW
GMAW
ESSC
Spot
Seam
Edge
ThermitElectron
Beam
Ion Beam
Laser Beam
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Welding Technology
Gas Welding Arc WeldingResistance
WeldingChemical
Welding
Advanced
Techniques
Oxy-
Acetaline
Oxy-Butane
Oxy-LPG
SMAW
GTAW
SAW
FCAW
GMAW
ESSC
Spot
Seam
Edge
ThermitElectron
Beam
Ion Beam
Laser Beam
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Advantages Disadvantages
Consistent weld quality. Xenon flash tube heats up
quickly and hence process
cannot be used continuouslyfor long time periods.
Quality of weld comparable to
that of conventional methods.
Life of xenon flash is very
short.
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