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Weld Joint Preparation (ISO 9692)

Weld Joint Preparation (ISO 9692) - triblab.teipir.grtriblab.teipir.gr/files/Welding/Lab/CH3_2_Welding_joint... · Welding and allied processes -Recommendations for joint preparation

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Page 1: Weld Joint Preparation (ISO 9692) - triblab.teipir.grtriblab.teipir.gr/files/Welding/Lab/CH3_2_Welding_joint... · Welding and allied processes -Recommendations for joint preparation

Weld Joint Preparation (ISO 9692)

Page 2: Weld Joint Preparation (ISO 9692) - triblab.teipir.grtriblab.teipir.gr/files/Welding/Lab/CH3_2_Welding_joint... · Welding and allied processes -Recommendations for joint preparation

Edge Preparation - Need

Poor penetration

Poor strength

Good penetration

Good strength (100% joint efficiency)

Page 3: Weld Joint Preparation (ISO 9692) - triblab.teipir.grtriblab.teipir.gr/files/Welding/Lab/CH3_2_Welding_joint... · Welding and allied processes -Recommendations for joint preparation

Edge PreparationFactors which influence choice of edge preparation

- Thickness- Material- Welding process- Extent of penetration required- Welding distortion- Cost

Page 4: Weld Joint Preparation (ISO 9692) - triblab.teipir.grtriblab.teipir.gr/files/Welding/Lab/CH3_2_Welding_joint... · Welding and allied processes -Recommendations for joint preparation

Basic Joint Types

butt

teelap

corneredge

Page 5: Weld Joint Preparation (ISO 9692) - triblab.teipir.grtriblab.teipir.gr/files/Welding/Lab/CH3_2_Welding_joint... · Welding and allied processes -Recommendations for joint preparation

Basic Weld TypesGroove welds

Fillet weldPlug / slot weld

Spot / seam weld

Page 6: Weld Joint Preparation (ISO 9692) - triblab.teipir.grtriblab.teipir.gr/files/Welding/Lab/CH3_2_Welding_joint... · Welding and allied processes -Recommendations for joint preparation

Applicable Welds for Butt jointSquare Groove weld V Groove weld

U Groove weldBevel Groove weld

J Groove weld

Page 7: Weld Joint Preparation (ISO 9692) - triblab.teipir.grtriblab.teipir.gr/files/Welding/Lab/CH3_2_Welding_joint... · Welding and allied processes -Recommendations for joint preparation

Applicable Welds for Butt joint

Double V Groove weld

Double U Groove weld

Double Bevel Groove weld

Double J Groove weld

Page 8: Weld Joint Preparation (ISO 9692) - triblab.teipir.grtriblab.teipir.gr/files/Welding/Lab/CH3_2_Welding_joint... · Welding and allied processes -Recommendations for joint preparation

Applicable Welds for Tee joint

Page 9: Weld Joint Preparation (ISO 9692) - triblab.teipir.grtriblab.teipir.gr/files/Welding/Lab/CH3_2_Welding_joint... · Welding and allied processes -Recommendations for joint preparation

Applicable Welds for Lap joint

Plug / slot weld Spot / seam weld

Fillet weld

Page 10: Weld Joint Preparation (ISO 9692) - triblab.teipir.grtriblab.teipir.gr/files/Welding/Lab/CH3_2_Welding_joint... · Welding and allied processes -Recommendations for joint preparation

Applicable Welds for Corner Joint

Page 11: Weld Joint Preparation (ISO 9692) - triblab.teipir.grtriblab.teipir.gr/files/Welding/Lab/CH3_2_Welding_joint... · Welding and allied processes -Recommendations for joint preparation

Applicable Welds for Edge Joint

Edge weld

Page 12: Weld Joint Preparation (ISO 9692) - triblab.teipir.grtriblab.teipir.gr/files/Welding/Lab/CH3_2_Welding_joint... · Welding and allied processes -Recommendations for joint preparation

Butt joint

Square Groove weld

Root gap

Page 13: Weld Joint Preparation (ISO 9692) - triblab.teipir.grtriblab.teipir.gr/files/Welding/Lab/CH3_2_Welding_joint... · Welding and allied processes -Recommendations for joint preparation

Butt jointSingle V Groove weld

Groove angle α

Root face

Root gap

Page 14: Weld Joint Preparation (ISO 9692) - triblab.teipir.grtriblab.teipir.gr/files/Welding/Lab/CH3_2_Welding_joint... · Welding and allied processes -Recommendations for joint preparation

Weld Reinforcement

Correct reinforcement

Minimum cost

Good joint strength

Excess reinforcement

High cost

Poor joint strength

Under reinforcement

Poor joint strength

Page 15: Weld Joint Preparation (ISO 9692) - triblab.teipir.grtriblab.teipir.gr/files/Welding/Lab/CH3_2_Welding_joint... · Welding and allied processes -Recommendations for joint preparation

Butt joint – Complete Joint penetration

Weld from face side

Back gouging

Back weld

Page 16: Weld Joint Preparation (ISO 9692) - triblab.teipir.grtriblab.teipir.gr/files/Welding/Lab/CH3_2_Welding_joint... · Welding and allied processes -Recommendations for joint preparation

Butt joint – Complete Joint penetration

Backing weld

Back gouging

Page 17: Weld Joint Preparation (ISO 9692) - triblab.teipir.grtriblab.teipir.gr/files/Welding/Lab/CH3_2_Welding_joint... · Welding and allied processes -Recommendations for joint preparation

Butt joint – Complete Joint penetration (welding from one side)

TIG / SMAW welding

Consumable guide

Page 18: Weld Joint Preparation (ISO 9692) - triblab.teipir.grtriblab.teipir.gr/files/Welding/Lab/CH3_2_Welding_joint... · Welding and allied processes -Recommendations for joint preparation

Butt Joint – Double V grooveLess weld metal

Less distortion

Higher edge preparation cost

Better for thickness > 20 mm

More weld metal

More distortion

Lower edge preparation cost

Better for thickness < 20 mm

Double V groove

Single V groove

Page 19: Weld Joint Preparation (ISO 9692) - triblab.teipir.grtriblab.teipir.gr/files/Welding/Lab/CH3_2_Welding_joint... · Welding and allied processes -Recommendations for joint preparation

Butt Joint – U groove

Good access at the root

Less weld metal

Higher edge preparation cost

Better for thickness > 40 mm

Groove angle

Root faceRoot gap

Root radius

Page 20: Weld Joint Preparation (ISO 9692) - triblab.teipir.grtriblab.teipir.gr/files/Welding/Lab/CH3_2_Welding_joint... · Welding and allied processes -Recommendations for joint preparation

Butt Joint – Bevel groove

Double bevel groove

Single bevel groove Bevel angle 40 to 50°

Difficult to approach the root

Weld defects

Back gouging to remove root defects

Good weld quality

Page 21: Weld Joint Preparation (ISO 9692) - triblab.teipir.grtriblab.teipir.gr/files/Welding/Lab/CH3_2_Welding_joint... · Welding and allied processes -Recommendations for joint preparation

Butt Joint – J groove

Good access at the root

Back gouging and back welding to get good weld quality

Less weld metal

Higher edge preparation cost

Better for thickness > 40 mm

Page 22: Weld Joint Preparation (ISO 9692) - triblab.teipir.grtriblab.teipir.gr/files/Welding/Lab/CH3_2_Welding_joint... · Welding and allied processes -Recommendations for joint preparation

Tee Joint – Full strength joint

leg

leg throat

throat = 0.707 x leg

leg = 1.414 x throat

In a full strength joint, leg = 0.75 x thickness

Page 23: Weld Joint Preparation (ISO 9692) - triblab.teipir.grtriblab.teipir.gr/files/Welding/Lab/CH3_2_Welding_joint... · Welding and allied processes -Recommendations for joint preparation

Tee Joint – Full penetration joint

leg = throat leg = throat

45° or 60°

Page 24: Weld Joint Preparation (ISO 9692) - triblab.teipir.grtriblab.teipir.gr/files/Welding/Lab/CH3_2_Welding_joint... · Welding and allied processes -Recommendations for joint preparation

Tee Joint

Theoretical throatActual throat

AWS D 1.1 recommendation when gap > 1.6 mm –to increase leg size of fillet by the amount of gap

Page 25: Weld Joint Preparation (ISO 9692) - triblab.teipir.grtriblab.teipir.gr/files/Welding/Lab/CH3_2_Welding_joint... · Welding and allied processes -Recommendations for joint preparation

Lap Joint

AWS D 1.1 recommendation

Overlap = 5 x thickness (1 inch minimum)

Gap between mating faces = 1.6 mm max

overlap

Page 26: Weld Joint Preparation (ISO 9692) - triblab.teipir.grtriblab.teipir.gr/files/Welding/Lab/CH3_2_Welding_joint... · Welding and allied processes -Recommendations for joint preparation

Welding Position – Groove1 G

2 G

3 G

4 G

Page 27: Weld Joint Preparation (ISO 9692) - triblab.teipir.grtriblab.teipir.gr/files/Welding/Lab/CH3_2_Welding_joint... · Welding and allied processes -Recommendations for joint preparation

Welding Position – Groove

1 G 2 G

5 G 6 G

45°

Page 28: Weld Joint Preparation (ISO 9692) - triblab.teipir.grtriblab.teipir.gr/files/Welding/Lab/CH3_2_Welding_joint... · Welding and allied processes -Recommendations for joint preparation

Welding Position – Fillet

1F

2F3F

4F

Page 29: Weld Joint Preparation (ISO 9692) - triblab.teipir.grtriblab.teipir.gr/files/Welding/Lab/CH3_2_Welding_joint... · Welding and allied processes -Recommendations for joint preparation

Welding Position – Fillet1F

2F

5F

Page 30: Weld Joint Preparation (ISO 9692) - triblab.teipir.grtriblab.teipir.gr/files/Welding/Lab/CH3_2_Welding_joint... · Welding and allied processes -Recommendations for joint preparation

Welding Positions – Groove

Position Inclination of axis Rotation of face

Flat 0° to 15° 150° to 210°

Horizontal 0° to 15° 80° to 150°

210° to 280°

Overhead 0° to 80° 0° to 80°

280° to 360°

Vertical 15° to 80° 80° to 280°

80° to 90° 0° to 360°

Page 31: Weld Joint Preparation (ISO 9692) - triblab.teipir.grtriblab.teipir.gr/files/Welding/Lab/CH3_2_Welding_joint... · Welding and allied processes -Recommendations for joint preparation

Welding Positions – Fillet

Position Inclination of axis Rotation of face

Flat 0° to 15° 150° to 210°

Horizontal 0° to 15° 125° to 150°

210° to 235°

Overhead 0° to 80° 0° to 125°

235° to 360°

Vertical 15° to 80° 125° to 235°

80° to 90° 0° to 360°

Page 32: Weld Joint Preparation (ISO 9692) - triblab.teipir.grtriblab.teipir.gr/files/Welding/Lab/CH3_2_Welding_joint... · Welding and allied processes -Recommendations for joint preparation

Joint preparation

According to ISO 9692Welding and allied processes -Recommendations for joint preparation

Part 1: Manual metal-arc welding, gas shielded metal-arc welding, gaswelding, TIG welding and beam welding of steels

Page 33: Weld Joint Preparation (ISO 9692) - triblab.teipir.grtriblab.teipir.gr/files/Welding/Lab/CH3_2_Welding_joint... · Welding and allied processes -Recommendations for joint preparation
Page 34: Weld Joint Preparation (ISO 9692) - triblab.teipir.grtriblab.teipir.gr/files/Welding/Lab/CH3_2_Welding_joint... · Welding and allied processes -Recommendations for joint preparation
Page 35: Weld Joint Preparation (ISO 9692) - triblab.teipir.grtriblab.teipir.gr/files/Welding/Lab/CH3_2_Welding_joint... · Welding and allied processes -Recommendations for joint preparation
Page 36: Weld Joint Preparation (ISO 9692) - triblab.teipir.grtriblab.teipir.gr/files/Welding/Lab/CH3_2_Welding_joint... · Welding and allied processes -Recommendations for joint preparation
Page 37: Weld Joint Preparation (ISO 9692) - triblab.teipir.grtriblab.teipir.gr/files/Welding/Lab/CH3_2_Welding_joint... · Welding and allied processes -Recommendations for joint preparation
Page 38: Weld Joint Preparation (ISO 9692) - triblab.teipir.grtriblab.teipir.gr/files/Welding/Lab/CH3_2_Welding_joint... · Welding and allied processes -Recommendations for joint preparation
Page 39: Weld Joint Preparation (ISO 9692) - triblab.teipir.grtriblab.teipir.gr/files/Welding/Lab/CH3_2_Welding_joint... · Welding and allied processes -Recommendations for joint preparation
Page 40: Weld Joint Preparation (ISO 9692) - triblab.teipir.grtriblab.teipir.gr/files/Welding/Lab/CH3_2_Welding_joint... · Welding and allied processes -Recommendations for joint preparation
Page 41: Weld Joint Preparation (ISO 9692) - triblab.teipir.grtriblab.teipir.gr/files/Welding/Lab/CH3_2_Welding_joint... · Welding and allied processes -Recommendations for joint preparation
Page 42: Weld Joint Preparation (ISO 9692) - triblab.teipir.grtriblab.teipir.gr/files/Welding/Lab/CH3_2_Welding_joint... · Welding and allied processes -Recommendations for joint preparation
Page 43: Weld Joint Preparation (ISO 9692) - triblab.teipir.grtriblab.teipir.gr/files/Welding/Lab/CH3_2_Welding_joint... · Welding and allied processes -Recommendations for joint preparation
Page 44: Weld Joint Preparation (ISO 9692) - triblab.teipir.grtriblab.teipir.gr/files/Welding/Lab/CH3_2_Welding_joint... · Welding and allied processes -Recommendations for joint preparation
Page 45: Weld Joint Preparation (ISO 9692) - triblab.teipir.grtriblab.teipir.gr/files/Welding/Lab/CH3_2_Welding_joint... · Welding and allied processes -Recommendations for joint preparation
Page 46: Weld Joint Preparation (ISO 9692) - triblab.teipir.grtriblab.teipir.gr/files/Welding/Lab/CH3_2_Welding_joint... · Welding and allied processes -Recommendations for joint preparation