WELDING PROCEDURE SPECIFICATION NO

Transcription

1 NATIONAL CERTIFIED PIPE WELDING BUREAU WELDING PROCEDURE SPECIFICATION NO FOR GAS METAL ARC WELDING WITH FLUXCORE WIRE (GMAW-FC) SEMI-AUTOMATIC OR MACHINE OF CARBON STEEL PIPE, VALVES, FITTINGS AND FLANGES WITH AND WITHOUT POSTWELD HEAT TREATMENT 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) Member Company Name: WPS Number: Revision: 3 Revision 1/15/14 Date issued: Welding Process: GMAW-FC, Semi automatic or machine Supporting PQRs: 87121, Joints (QW-402) Joint Design: Single-V or U, Double-V or U, Fillets, Repairs, Build-up. Details: See Typical Joint Designs Backing: Required Backing or Retainer type: Carbon steel when used. Base Metals (QW-403) Filler Metals and Electrodes (QW-404) P-Number: 1 Group No: 1, 2 Specification Number: SFA 5.20 to P-Number: 1 Group No: 1, 2 AWS Classification: E71T-1or E70T-1 F-number: 6 Base Metal Thickness Range A-Number: 1 Groove Welds: 3/16 to 8.0 Maximum Weld Metal Thickness: Fillet Welds: All Grooves: 8.0 Fillets: All Minimum Outside Diameter Grooves Welds: 2-7/8 OD except 1 OD when Max. Bead Thickness: 3/16 in flat position Supplemental Filler Metal: Not Permitted Fillet Welds: 2-7/8 OD except 1 OD when Penetration Enhancing Flux: Not applicable in flat position Consumable Insert: Not applicable Postweld Heat Treatment (QW-407) Temperature: None or 1100 to 1200 F Min. Holding Time: per construction Code Pulsed Power Supply: Not applicable Preheat (QW-406) Positions (QW-405) Gas (QW-408) Minimum metal temp.: 50 F Positions permitted: All for E71 wire, flat Shielding Gas: 75Ar-25CO2, 25 to 40 CFH Interpass Temp. (Max): 500 F for E70T Preheat Maintenance: None. Progression when in Vertical: Uphill Backing Gas: None Trailing Shield: None Electrical Characteristics (QW-409) and Related Matters Weld Layer Process Electrode or Filler Current Travel Speed Class Diameter Type/Pol Volts WFS Current (a) (ipm)* Other Fill and fillets Technique (QW-410) Tungsten Size/Type: None Initial Cleaning: Remove grease or oil with solvent. Shielding Gas Cup Size: 3/8 to 3/4 in ID Remove cutting oxide by grinding. Single or Multiple Pass per Side: Either Interpass Cleaning: Remove slag with slag hammer, grinder or Single or Multiple electrodes: Single Wire brush. Remove slag between passes. Contact-tube-to-work Distance (stickout): 3/8 to 1/2 Peening: Not permitted Backgouging: Grinding or carbon arc followed by grinding Other: Preheat to 175 F for thickness over 1 in. Repair Method: Grinding, Backwelding is permitted Stringer or Weave Bead: Either The undersigned contractor, a member of the Nation 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 attached Procedure Qualification Records. Company: GMAW Flux-core E71T-1 or E70T /16 DCEP to to to 380 Transfer mode: Spray and globular Parameters are for Dual-Shield 7000 and 78. For other products follow mfgr s settings. NCPWB Form QW-482/5-02 WPS 1-7-1

3 Typical Joint Designs Other joint designs shown on Engineering drawings supersede these joint details Butt welds 30 to to 45 Throat dimension See note 1 3/32 to 1/8 3/32 to 1/8 See Note 1 3/16 Nom. 3/32 to 1/8 Note 1: 1/8 inch maximum except for B31.1 and B31.5 work, 1/16 inch maximum Fillet, Nozzle and Branch Connection Welds Size (leg) Dimension 1/16 max 45 min 1/8 min Socket and Slip-on Flange Welds 1/16 min Y Y X 1/16 min Smaller of T or 1/4 Z 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 Z = for B31.9 work, minimum of the greater of the pipe nominal wall thickness or 1 4 in. (6 mm) and face fillet is not required unless specified by the design. September 20, 2012 For use by NCPWB Members Only ( NCPWB)

4 PROCEDURE QUALIFICATION RECORD (PQR) WPS followed during welding of test coupon: SP 124 AW. Rev 0 dated 11/25/81 Test Welding Process(s) used: Fluxcore Arc Welding (GMAW-FC) Type: Semi-Automatic Base Metal Specification: SA516 Grade 70 to Base Metal Specification: SA516 Grade 70 P-No: 1 Group No: 2 to P-No: 1 Group No: 2 Thickness: 2.5 Plate: X Diameter If Pipe: Joint Type: Single V-Groove with Steel backing strip. Filler Metal Specification: SFA 5.20 AWS Classification: E70T-1 F-No: 6 A-No: 1 Filler Metal Size: 5/64 Supplementary Filler Metal: None Weld Metals Deposit Thickness: 2.5 Maximum Pass Thickness: < 1/4 Preheat Temp ( F) 150 Interpass Temp ( F): 500 Welding Position/Progression: 3G Uphill Tungsten Type/Size: NA Current: DC Polarity: RP Travel Speed: NA ipm Postweld Heat Treatment ( F): None Heat Treatment Time (Hrs): NA Shielding Gas Composition: 72% Ar, 25% CO 2, 40 CFH Backing Gas None used CFH Stringer/Weaver Bead: Stringer Transfer Mode: Spray/Globular Oscillation: NA Single/Multi-Pass: Multi Single/Multi-Arc: Single Layer Process Filler Class Diameter Amperage Volts Travel Speed Other All FCAW E70T-1 5/ ipm 19 Passes Reduced Section Tensile Tests Specimen No. Width/Dia. Thickness Area Ult. Load(lbs) Utl. Stress(psi) Failure Location T1 top ,700 83,300 Weld Metal T1 Bottom ,750 88,600 Base Metal T2 top ,700 83,700 Weld Metal T2 Bottom ,400 88,300 Base Metal Guided Bend Tests [ X ] QW (Side) [ ] QW-462.3(a) (Trans R&F) [ ] QW-462.3(b) (Long R&F) Side Pinhole - Acceptable Side No Defects - Acceptable Side No Defects - Acceptable Side No Defects - Acceptable Welder s Name: Len Wertelet Stamp No. LW Test Number: Welding Witnessed by: James J. Sekely Specimens Evaluated by: Earl Gallagher, PTL We certify that the statements in this record are correct, and that the test coupons were prepared, welded and tested in accordance with the requirements of Section IX of the ASME Code. NATIONAL CERTIFIED PIPE WELDING BUREAU Contractor: BY: Chairman, Technical Committee NCPWB Form QW-483 4/87 PQR Number: 87121

5 PROCEDURE QUALIFICATION RECORD (PQR) WPS followed during welding of test coupon: SP 124 SR, Rev 0 dated 11/25/81 Test Welding Process(s) used: Fluxcore Arc Welding (GMAW-FC) Type: Semi-Automatic Base Metal Specification: SA516 Grade 70 to Base Metal Specification: SA516 Grade 70 P-No: 1 Group No: 2 to P-No: 1 Group No: 2 Thickness: 2.5 Plate: X Diameter If Pipe: Joint Type: Single V-Groove with Steel backing strip. Filler Metal Specification: SFA 5.20 AWS Classification: E70T-1 F-No: 6 A-No: 1 Filler Metal Size: 5/64 Supplementary Filler Metal: None Weld Metals Deposit Thickness: 2.5 Maximum Pass Thickness: < 1/4 Preheat Temp ( F) 150 Interpass Temp ( F): 500 Welding Position/Progression: 3G Uphill Tungsten Type/Size: NA Current: DC Polarity: RP Travel Speed: NA ipm Postweld Heat Treatment ( F): Heat Treatment Time (Hrs): 2.5 Shielding Gas Composition: 72% Ar, 25% CO 2, 40 CFH Backing Gas: None used CFH Stringer/Weaver Bead: Stringer Transfer Mode: Spray/Globular Oscillation: NA Single/Multi-Pass: Multi Single/Multi-Arc: Single Layer Process Filler Class Diameter Amperage Travel Speed Volts Other All FCAW E70T-1 5/ ipm 19 Passes Reduced Section Tensile Tests Specimen No. Width/Dia. Thickness Area Ult. Load(lbs) Utl. Stress(psi) Failure Location T1 top ,400 82,200 Weld Metal T1 Bottom ,850 78,200 Base Metal T2 top ,500 82,700 Weld Metal T2 Bottom ,750 82,950 Base Metal Guided Bend Tests [ X ] QW (Side) [ ] QW-462.3(a) (Trans R&F) [ ] QW-462.3(b) (Long R&F) Side Pinhole Acceptable Side No Defects-Acceptable Side No Defects-Acceptable Side No Defects-Acceptable Welder s Name: Len Wertelet Stamp No. LW Test Number: Welding Witnessed by: James J. Sekely Specimens Evaluated by: Earl Gallagher, PTL We certify that the statements in this record are correct, and that the test coupons were prepared, welded and tested in accordance with the requirements of Section IX of the ASME Code. NATIONAL CERTIFIED PIPE WELDING BUREAU Contractor: BY: Chairman, Technical Committee NCPWB Form QW-483 4/87 PQR Number: 87122