QW-482 WELDING PROCEDURE SPECIFICATION (WPS)

Transcription

1 QW-482 WELDING PROCEDURE SPECIFICATION (WPS) Company Name: J.T. Thorpe & Son, Inc. By: J. Jacob Dupree, P.E., Q.C. Manager Welding Procedure Specification No.: JTT-24-CVN Revision No. 0 November 5, 2010 Supporting PQR No.(s) JTT-24-PQR (CVN) Revision No. 0 Date: November 2, 2010 Welding Process(es) Type(s) Manual (Automatic, Manual, Machine, or Semi-Auto.) JOINTS (QW-402) Joint Design Fillet Backing (Yes) YES (No) Backing Material (Type) Material of Joint (Refer to both backing and retainers.) Details X Metal Nonfusing Metal Fillet weld Nonmetallic See Project Specifications Charpy Toughness testing required Sketches, Production Drawings, Weld Symbols or Written Description Should show the general arrangement of the parts to be welded. Where applicable, the root spacing and the setails of weld groove may be specified. (At the option of the Mfgr., sketches may be attached to illustrate joint design, weld layers and bead sequence, e.g. for notch toughness procedures, for multiple process procedures, etc.) * BASE METALS (QW-403) Specification Type, Grade and Mechanical Properties: to Specification Type and Grade and mechanical properties: Thickness Range: Base Metal: Groove Fillet Pipe Dia. Range: Groove Fillet * FILLER METALS (QW-404) Spec. No. (SFA) 5.11 AWS No. (Class) ENiCrFe-3 (INCO 182) F-No. 43 A-No. Size of Filler Metals 3/32", 1/8" Weld Metal Thickness Range: Groove Fillet Any size fillet weld Electrode - Flux (Class) Flux Trade Name Consumable Insert *Each base metal - filler metal combination should be recorded individually. SA Class 1, heat treated at 2 hour minimum to 1, 250 F, Charpy Impact tested with impact energy greater than 15 ft-lbs at 0 F 304H Austenitic Stainless Steel All sizes All sizes 1060 Hensley Street, Richmond, CA tel: fax:

2 POSITIONS Position(s) of Groove QW-482 (Back) WPS No. JTT-24-CVN Rev. 0 November 5, 2010 Welding Progression: Up X Down Time Range Position(s) of Fillet ALL GAS (QW-408) PREHEAT (QW-406) POSTWELD HEAT TREATMENT (QW-407) See Note 1 Temperature Range See Note 1 See Note 1 None Percent Composition Preheat Temp. Min. 350 F (see Note 1) Gas(es) (Mixture) Flow Rate Interpass Temp. Max. (Single pass only) Preheat Maintenance continuous (see Note 1) Shielding (Continuous or special heating where applicable should be recorded) Trailing Backing ELECTRICAL CHARACTERISTICS (QW-409) Current AC or DC DC Polarity DCEP Amps (Range) Volts (Range) (Amps and volts range should be recorded for each electrode size, position, and thickness, etc. This information may be listed in a tabular form similar to that shown below.) Tungsten Electrode Size and type Mode of Metal Transfer for GMAW Arc Timing TECHNIQUE (QW-410) String or Weave Bead Orifice or Gas Cup Size Initial and Interpass Cleaning (Brushing, Grinding, etc.) (Pure Tungsten, 2% Thoriated, etc.) (Spray arc, short circulating arc, etc.) String or weave Grinding and Brushing Method of Back Gouging Oscillation Contact Tube to Work Distance Multiple or Single Pass (per side) Single Multiple or Single Electrodes Single Travel Speed (Range) 1 to 8 inches per minute (maximum heat input = 24,480 J/minute) Peening No peening Note 1: Preheat SA Cl.1 base metal. Heat welded joint to 600 F after welding. Immediately after heating to 600 F, wrap joint with ceramic fiber 6 inches minimum around weld joint and allow to cool while wrapped with ceramic fiber. Filler Metal Current (e.g., Remarks, Com- Travel ments, Hot Wire Weld Type Amp. Volt Speed Addition, Technique, Layer(s) Process Class Dia. Polar. Range Range Range Torch Angle, Etc.) ENiCrFe-3 3/32" ENiCrFe-3 1/8" DCEP DCEP to 8 ipm 1 to 8 ipm 1060 Hensley Street, Richmond, CA tel: fax:

3 QW-483 PROCEDURE QUALIFICATION RECORD (PQR) (See QW-200.2, Section IX, ASME Boiler and Pressure Vessel Code) Record Actual Conditions Used to Weld Test Coupon Company Name: J.T. Thorpe & Son, Inc. Procedure Qualification Record No.: JTT-24-PQR-CVN Rev. 0 Date: WPS No. JTT-24-CVN Welding Process(es) Types (Manual, Automatic, Semi-Auto.) Manual Nov. 2, 2010 JOINTS (QW-402) Groove Design of Test Coupon (For combination qualifications, the deposited weld metal thickness shall be recorded for each filler metal or process used.) BASE METALS (QW-403) POSTWELD HEAT TREATMENT (QW-407) Material Spec. Temperature None SA Cl.1, heat treated to 1250 F Time for 2 hours to SA H P-No. P-4 (see material to P-No. P-8 spec.) Thickness of Test Coupon See above Diameter of Test Coupon GAS (QW-408) None Percent Composition Gas(es) (Mixture) Flow Rate Shielding Trailing FILLER METALS (QW-404) Backing SFA Specification 5.11 AWS Specification ENiCrFe-3 (INCO 182) ELECTRICAL CHARACTERISTICS (QW-409) Filler Metal F-No. 43 Current DC Weld Metal Analysis A-No. Polarity Reverse (DCEP) Size of Filler Metal 1/8" Amps. 85 Volts 24 Each welded pass was less than 1/2" Tungsten Electrode Size Heat input = 24,480 Joules/minute Weld Metal Thickness 1/2" POSITION (QW-405) TECHNIQUE (QW-410) Position of Groove 3G Travel Speed 5 inches per minute Weld Progression (Uphill, Downhill) uphill String or Weave Bead string Oscillation Multipass or Single Pass (per side) multiple Single or Multiple Electrodes single PREHEAT (QW-406) Preheat Temp. 350 F (measured using Temp stick) No special thermal process during welding (QW410.64) Interpass Temp. 350 F to 500 F Sample heated to 600 F after welding Then immediately covered with ceramic fiber blanket to cool under blanket 1060 Hensley Street, Richmond, CA tel: fax:

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