WELDING PROCEDURE SPECIFICATION NO

Transcription

1 NATIONAL CERTIFIED PIPE WELDING BUREAU WELDING PROCEDURE SPECIFICATION NO FOR GAS TUNGSTEN ARC WELDING (GTAW) AND SHIELDED METAL ARC WELDING (SMAW) OF NICKEL ALLOY 20 (UNS N08020) PIPE, VALVES, FITTINGS AND FLANGES USING ER320 AND E FILLER METALS This document is the property of (NCPWB Member Company Name) This Welding Procedure Specification (WPS) and Procedure Qualification Record(s) (PQR) are issued by the NCPWB for adoption by its members. Reproduction or use of this WPS and PQR(s) by anyone other than members of the NCPWB is prohibited NCPWB

2 WELDING PROCEDURE SPECIFICATION (WPS) Company Name: Welding Process: GTAW/SMAW WPS Number: Revision number: 2 Revision Date: 10/1/13 Type: Manual Supporting PQRs: 92001, Joints (QW-402) Joint Design: Single-V or U, Double-V or U, Fillets, Repairs, Build-up Details: See Typical Joint Designs Backing: Optional for GTAW, Required for SMAW Backing or Retainer Type: P-45 type metal, when used Base Metals (QW-403) Filler Metals (QW-404) Root Fill P Number: 45* Group Numbers: N/A Specification Number: SFA 5.9 SFA 5.4 to P Number: 45* Group Numbers: N/A AWS Classification: ER320 or ER320LR E Thickness Range F-number: 6 5 Base Welds: to A-Number: None None Fillet Welds: All Max. Deposited Weld Metal: Minimum Pipe Outside Diameter: Grooves: Grooves: SMAW:>1 OD, GTAW:All Fillet: All All Fillets: SMAW:>1 OD, GTAW:All Max. Bead Thickness: 1/8 1/8 Supplemental Filler Metal: Not Applicable Not Applicable *UNS N08020 (Alloy 20 only) Consumable Insert: Not Permitted Not Applicable Postweld Heat Treatment (PWHT)(QW-407) Pulsed Power Source: Preferred Not Applicable Temperature Range ( F): None Holding Time (hr.): N/A Gas (QW-408) Positions (QW-405) Preheat (QW-406) Shielding Gas: Welding Grade Argon Welding Positions: All Minimum Preheat ( F): to 25 CFH Progression: Uphill Backing Gas: Argon at 3-5 CFH Maximum Interpass: ( F): 250 Trailing Gas: None Preheat Maintenance: None Required Weld Layer Welding Process 1, Opt.2 GTAW ER320 or ER320LR Electrical Characteristics (QW-409) Electrode or Filler Metal Current Other Class Dia. (in.) Type Polarity Amps Volts Travel Speed 3/32 DC EN (Str) 45 to 100 N/A 3 to 5 ipm 1 to 4 SMAW E /32 DC EP (Rev) 40 to 65 N/A 3 to 5 ipm 3+ SMAW E /8 DC EP (Rev) 65 to 95 N/A 3 to 6 ipm Tungsten Size/Type: 1/16 or 3/32, EWTh-2 or EWCe-2 Shielding Gas Cup Size: #4 (1/4 ID) to #12 (3/4 ID) Pulsed Current: Preferred Multiple or single pass per side: Either Multiple or single electrodes: Single Contact-tube-to-work Distance (stickout): Not Applicable Backgouging: Grinding or carbon arc followed by grinding. Repair Method: Grinding. Backwelding is permitted Technique (QW-410) Initial Cleaning: Remove grease oxide by grinding. Solvent clean using clean rag and air dry. Foreign materials will cause cracking. Interpass Cleaning: Remove slag with chipping hammer or grinder. Stringer or Weave Bead: Stringer Peening: Not permitted Other: Use of stringer beads and low interpass temperature is important to avoid hot cracking. The undersigned Contractor, a member of the National Certified Pipe Welding Bureau, hereby adopts this jointly developed procedure as its company Welding Procedure Specification and certifies that this procedure has been qualified as shown on the above referenced Procedure Qualification Records. Date: Title: NCPWB Form QW-482/ WPS

3 Typical Joint Designs for Nickel and Nickel Alloys Butt welds Other joint designs shown on Engineering drawings supersede these joint details 40 to to 50 1/16 Max 3/32 to 1/8 3/32 to 1/8 1/16 Max. 3/16 Nom. 3/32 to 1/8 Nozzle and Branch Connection Welds 45 min 1/8 min Socket and Slip-on Flange Welds Y 1/16 min Y X 1/16 min Smaller of T or 1/4 X Approximately 1/16 before welding T = The nominal thickness of the pipe X = the lesser of 1.4T or the hub thickness unless another size is shown on the engineering drawings Y = the lesser of 1.1T or the fitting thickness unless another size is shown on the engineering drawings

4 PROCEDURE QUALIFICATION RECORD (PQR) WPS followed during welding of test coupon: Alloy 20-Cb3, rev 0 dated 6/27/89 PQR Number: Welding Process(s) used: GTAW Date Test Coupon was welded: 6/27/89 Base Metal Specification: ASME SB463, UNS N08020 to Base Metal Specification: ASME SB463, UNS N08020 P Number: 45 Group No: NA to P Number: 45 Group No: NA Plate/Pipe Diameter: Plate Base Metal Thickness(in.): Joint Type: Single V-groove without backing Filler Metal Specification: SFA 5.9 Classification: ER320-LR F-No.: 6 A-No.: None Deposited Weld Metal Thickness (in.): Maximum Pass Thickness (in.): <1/8 Filler Metal Size (in.): Not Recorded Supplementary Filler Metal: N/A Preheat Temperature ( F): 50 Interpass Temperature ( F): 300 Welding Position/Progression: 1G Current Type: DC Polarity: Straight Travel Speed (ipm): Not Recorded Shielding Gas Composition (CFH): Argon Backing Gas (CFH): Argon, 3 to 5 Tungsten Size/Type: 3/32 2% Thoriated GMAW Transfer Mode: N/A Stringer/Weaver Bead: Stringer Oscillation: N/A Single/Multi-Pass: Multiple Single/Multi-Electrode: Single Postweld Heat Treatment ( F): None Heat Treatment Time(hr.): N/A Other: Not Recorded Layer Process Filler Classification Diameter Amperage Travel Speed Volts Heat Input Other All GTAW ER320 3/32 80 to 150 Not Recorded Reduced Section Tensile Tests Rectangular Specimens Turned Specimens Full-Section Specimen Specimen Width/Dia. (in) Thickness (in) Area (sq in) Ult.imate Load (lbs) Ultimate Stress Failure Location (psi) T ,400 82,700 Weld Metal T ,300 84,600 Weld Metal Bend Tests: Trans. Root and Face (QW462.3a) Trans. Side (QW-462.2) Long.Root and Face (QW-462.3b) Type Results Type Results Toughness Test Charpy Specimen Size: None Test Temperature N/A Specimen Number Notch Location Charpy V-Notch Test Drop-Weight Test Foot-Lbs. Ft-lb Av. Percent Shear Lateral Exp. (mils) Break No Break Fillet Weld Test Macro Examination Fillet Weld Test Leg Sizes: Weld Deposit Analysis: Other Tests: Welder s Name: James Fife, BMW Constr. Stamp No. XXX-XX-0891 Welding Witnessed Al Duvall, BMW QCM Test Conducted by: Sherry Labs Laboratory Test Number: L8840 We Certify that the statements in this record are correct and that the test welds were prepared, welded and tested in accordance with the requirements of Section IX of the ASME Code. NATIONAL CERTIFIED PIPE WELDING BUREAU Date: Chairman, Technical Committee Note: First five digits of welder s stamp number have been deleted. NCPWB Form QW-483 6/91 PQR Number Rev

5 PROCEDURE QUALIFICATION RECORD (PQR) WPS followed during welding of test coupon: WPS Alloy 20-Cb3 PQR Number: Welding Process(s) used: SMAW Date Test Coupon was welded: 7/10/92 Base Metal Specification: ASME SB464, UNS N08020 to Base Metal Specification: ASME SB464, UNS N08020 P Number: 45 Group No: NA to P Number: 45 Group No: NA Plate/Pipe Diameter: 2 NPS Sch 40 Base Metal Thickness(in.): Joint Type: Single V-groove with backing Filler Metal Specification: SFA5.4 Classification: E F-No.: 5 A-No.: None Deposited Weld Metal Thickness (in.): Maximum Pass Thickness (in.): <1/8 Filler Metal Size (in.): 3/32, 1/8 Supplementary Filler Metal: N/A Preheat Temperature ( F): 100 Interpass Temperature ( F): 300 Welding Position/Progression: 1G Rolled Current Type: DC Polarity: Reverse Travel Speed (ipm): Below Shielding Gas Composition (CFH): N/A Backing Gas (CFH): N/A Tungsten Size/Type: N/A GMAW Transfer Mode: N/A Stringer/Weaver Bead: Stringer Oscillation: N/A Single/Multi-Pass: Multiple Single/Multi-Electrode: Single Postweld Heat Treatment ( F): None Heat Treatment Time(hr.): N/A Other: N/A Layer Process Filler Classification Diameter Amperage Travel Speed Volts Heat Input Other 1 SMAW E / to 4 ipm 2 SMAW E / to 4 ipm Reduced Section Tensile Tests Rectangular Specimens Turned Specimens Full-Section Specimen Specimen Width/Dia. (in) Thickness (in) Area (sq in) Ult.imate Load (lbs) Ultimate Stress Failure Location (psi) T ,600 82,850 Weld Metal T ,600 84,100 Weld Metal Bend Tests: Trans. Root and Face (QW462.3a) Trans. Side (QW-462.2) Long.Root and Face (QW-462.3b) Type Results Type Results Toughness Test Charpy Specimen Size: None Test Temperature N/A Specimen Number Notch Location Charpy V-Notch Test Drop-Weight Test Foot-Lbs. Ft-lb Av. Percent Shear Lateral Exp. (mils) Break No Break Fillet Weld Test Macro Examination Weld Deposit Analysis: Other Tests: Fillet Weld Test Leg Sizes: Welder s Name: Jeff Chambers Stamp Number: XXX-XX-4735 Welding Witnessed I. Darling, Indust. Power Test Conducted by: GEM Industrial Inc, Gary Eff, QC Mgr. Laboratory Test Number: 646 We Certify that the statements in this record are correct and that the test welds were prepared, welded and tested in accordance with the requirements of Section IX of the ASME Code. NATIONAL CERTIFIED PIPE WELDING BUREAU Date : Note: First five digits of welder s stamp number have been deleted. Chairman, Technical Committee NCPWB Form QW-483 6/91 PQR Number 92002