welding procedures specification
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Welding Procedure Specification
(WPS)
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Preheat Temp.
Range :-
12 mm 30 mm : 20C
31 mm 36 mm : 30C
Heating Method :-
LPG Torch
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Interpass Temp.
Maximum : 250C
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How to check interpass temp. ?
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1. Tempilstik
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2. Digital Thermometer
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Electrodes
Root E 7016 G
Hot Pass E 7018 1
Filling E 7018 1 Capping E 7018 1
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Electrode Brand KobelcoOnly Use this Electrode
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Where do you keep electrodes ?
Quiver Oven
What is the temp. of the oven?( 70 C )
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Types Of Welding
1. SMAW (Shielded Metal Arc Welding).
2. SAW (Submerged Arc Welding).
3. FCAW (Flux Core Arc Welding).4. GTAW (Gas Tungsten Arc Welding).
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SMAW
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SAW
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FCAW
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GTAW
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Welding Positions
1G 2G 3G 4G 5G 6G 6GR
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1G
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2G
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3G
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4G
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5G
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6G
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6GR
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Welding Defects
What are the defects that we can find in thewelding ?
1. Lack of fusion
2. Lack of penetration
3. Excess penetration4. Concavity or Suck back
5. Porosity
6. Inclusions
7. Cracking
8. Undercut
9. Spatter
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1. Lack of fusion
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2. Lack of penetration
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3. Excess penetration
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4. Concavity or Suck back
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5. Porosity
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6. Inclusions
Examples : Slag
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7. Cracking
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8. Undercut
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9. Spatter
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Is this welding good? (Yes/No)
Why?
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Perfect Welding
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Safety
PPE (Personal Protective Equipment)
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1. Follow the WPS
2. Ask your supervisor
3. Try to minimize the using ofGrinder
4. Keep electrodes in the QUIVER Oven
5. Always check (Temp. , Current , Volt ,)
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