WPS PQR Format

Welding Procedure Specification (WPS) Prequalified : Ye Y es Qualified by Testing : Yes

/ No No / No

Company Name : Global Wind Power Limited Weldin Welding g Proce Process ss (es) (es) : Root Root SMAW / Cover SAW Supporting PQR NO : PQR- SMAW+SAW-GWPL/16 SMAW+SAW-GWPL/16

Identification Revision Prepared

: PQR- SMAW+SAW-GWPL/16 SMAW+SAW-GWPL/16 : 6 Date : 4-Jun-10 : Pr Pradip Patil Authorized : Vi Vikas Dighe

JOINT DESIGN USED Refer Figure 3.3 Type : Butt Joint (double vee) Single / Double Backing : Ye Yes / No No Backing Material : Not Applicable Root Opening : 0 mm to 3 mm Root Face Dim. : 3.2 mm to 4 mm

Type

: Ma Manual Machine

Groove Angle Back Gouging Method

0

: 60 C : Ye Y es :

to

ELECTRICAL CHARACTORISTICS Transfer Mode : SAW Globular

0

65 C / No No Grinding

Current

BASE METAL Refer Table 4.9 Material Spec. : European Norm EN 10025 Type of grade : S355J2G3 Thickness : Groove 28 mm / Fillet all Diameter (Pipe) : to N/A Thickness Range Qualified : Refer table 4.2 16 mm to unlimited note d

FILLER METALS AWS Specification Type of grade

: : Compos Cup Size Electrode-Flux class :

PREHEAT Preheat Temp Interpass Temp.

Pass or weld Process layers (s)

: :

3 SAW Cover passes (face side) 1 SAW 2 SAW 3 SAW 4 SAW 5 SAW

Notes

:

1: 2: 3: 4:

Dia (mm)

Refer table 4.5 / Short Circuiting / Spray

Yes

/ DCEP / Pulsed Not Applicable

Yes

Not Applicable / Type

TECHNIQUE

Electrode Spacing Angle Contact tube to work distance Peening Inter pass cleaning

: Stringer bead : Multi Pass No of  : Electrodes : Lo L ongitudinal : Leading Arc

/ Weave bead / Single Pass

Lateral Trailing Arc

: Mi M inimum : :

Maximum

Flow Rate POST WELD HEAT TREATMENT Loading temp : Heating rate : Holding temp. : Holding time : Cooling rate : Un-Loading temp

Not Applicable Minimum Mi M inimum Minimum Minimum Minimum

/ / / /

Heat Input

Joint Details (Sketch)

Ma Maximum M Ma aximum Maximum Maximum Maximum

Refe Referr tab table le 4.5 4.5

Filler Metal

Class

1 SM SMAW Cover passes (root side) 1 SAW 2 SAW

Size

: Min. : Max.

WELD WELDIN ING G PRO PROCE CEDU DURE RE (PAR (PARAM AMET ETER ERS) S)

Root Run

Tungastan Electrode (GTAW) :

Refer Annexure V : Ro Root / Cover : Ro Root / Co Cover

SHIELDING Flux Gas

AC DCEN Other

/ Semi-automatic / Automatic

Current

Type & Polarity Outside

>10% Volts variation

Amps

>7% Travel Travel Speed Speed >15% >15% Interpass Temp. variatio variatio Max n n 0 mm/ min C

table 4.6

Inside SFA 5.1 Inside SFA 5.17 SFA 5.17

3.15 mm 3.15 mm

Outside DCEP DCEP

487 to 594 487 to 594

27 to 31 27 to 31

438 to 592 438 to 592

2.5 max 2.5 max

SFA 5.17

3.15 mm

DCEP

487 to 594

27 to 31

438 to 592

2.5 max

Inside SFA 5.17 SFA 5.17 SFA 5.17 SFA 5.17 SFA 5.17

3.15 mm 3.15 mm 3.15 mm 3.15 mm 3.15 mm

Outside DCEP DCEP DCEP DCEP DCEP

489 to 596 489 to 596 489 to 596 489 to 596 489 to 596

26 to 30 26 to 30 26 to 30 26 to 30 26 to 30

346 to 492 346 to 492 346 to 492 346 to 492 346 to 492

2.5 max 2.5 max 2.5 max 2.5 max 2.5 max

3.15 mm