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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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