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Cold and Hot Wire

Pulsed GTAWPresented

byGalen Wright

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Welding of Cast Duplex

to Forged Duplex

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Welding Procedure Specs

Material Spec

P10H GR 1 to A890-4A

Filler Material

ER329N Metrode, AWS 2209

Bare (Solid) Wire

0.090 & 0.045

Preheat Temperature

200 F

Interpass

300 F

Position

1G

Base Metal Thickness

Sour Service

0.188 to 2.0

Sour Service with Impact

0.625 to 2.0

Qualify Temperature

-75 F

Postweld Heat Treat N/A

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Welding Process

Manual, Semi-Automatic,Automatic

Groove Design

Single V 75/24 Shielding Gas

99.98 % Argon

Flow Rate 30 CFH

Backing Gas 99.98 % Argon

30 CFH

Electrical Characteristics Polarity

DC Straight

Tungsten 2% Thoriated1/8

Heat Input Max 35,000 Joules /inch

Min 20,000 Joules/inch

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Test Acceptance Criteria

Tensile Strength (Min)

Elongation (%) 2 inch

Charpy Impact Energy

(Avg /Single) Impact Temperature

Lateral Expansion

Hardness

Ferrite Content (%)

Pitting Corrosion @ 25 C

90,000 PSI (621 MPa)

25.0 (Min)

50/38 ft-lbs (Min)

[68/52 J(Min)]-75 F

0.38 mm

28 HRc (Max) [310 Hv (Max)]

97 HRb (Min) [232 Hv (Min)]

35 - 60

4 g/m2 (Max)

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Test Results

Test Procedure forTensile ASTM A370/ASME IX

Bend Test ASME IX

Hardness Test ASTM E92 (Vickers)

/ BS EN 288 ASTM E18

(Rockwell)/API 6A

CVN Impact Test Temp -75 F

ASME VIII Div 1 UG-84

/ASTM A370; V-Notch Ferrite Content

ASTM E652

Test Results

Weld Cap 54.8% Weld Root 58.6%

Corrosion Test ASTM G46 Method A

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Weld Station Setup

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Weld Station Setup

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XM Module Setup

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Root Pass - Manual

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Back Side Root

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Fill Passes with Hot Wire TIG

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Fill Pass Progression to Cap

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Completed Butt Welds

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Bore Weld Seal Surface

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Seal Surface Repair

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XM Cladding Samples

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Narrow Groove Butt Weld

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G. Wrights Welding Ltd

9424- 58 Ave NWEdmonton, Alberta

T6E 0B6

780-435-5755

galenw@telus.net