SWPS B2.1-22-015 is the Standard Welding Procedure Specification (SWPS) for Gas Tungsten Arc Welding of Aluminum (M/P-22 to M/P-22), 18 through 10 Gauge, ER4043 or R4043, in the As-Welded Condition, with or without Backing. ), 5) GMAW-S (Short Circuiting Transfer Mode), 6) GMAW (Globular, Spray or Pulsed Transfer Mode), 7) FCAW (Fluxcored Wire Variation of GMAW). There are many different types of NDT, but the most common are visual inspection, radiography, ultrasonic, and magnetic particle testing. A 6g 2 inch schedule 80 carbon steel pipe welded with 309 ss rod is a pretty common welding test and it is also known as the UA 41 welding test. There are several different forms of RW (e.g., spot, seam, projection, single-sided, bonding, cross wire, micro, flash, and upset welding) that differ primarily by the types and shapes of weld electrodes used to apply the pressure and conduct the current. 0000079828 00000 n Additionally, it can be used to inspect both joints and welds themselves. Tacks welds are going to be pretty small and some test inspectors specify just how long they can be. Welding electrode: 1/8" for root run, 3/32 for fill & capping Steps to pass 6G test Test coupon preparation and beveling Free Bend Test measures the ductility of the weld metal in a butt joint in a plate or pipe in terms of elongation percentage. The biggest goal of the hot pass is not to disturb the root pass at all. Radiographic testing, also known as RT or X-ray, is a common method of inspecting welds for defects. The new NCPWB Welding Procedure Specification numbering system clearly defines the type of metals to be welded, the welding process used and allows for identification of variations in a process. 0000082654 00000 n 0 Download now. Welding Polarity: Direct Current Electrode Positive (DCEP) Test Position: 6G Fixed Position, vertical uphill-downhill progression. By looking at the characteristics of the image on the film, inspectors can identify any defects in the weld. metal with no residue of mill scale.I used a 1/8" gap, with a comments of this youtube video. Some common weld tests include Visual Inspection, Bend Testing, tension test, visual inspection, and radiography testing. The American Welding Society, acting under ANSI rules for consensus standards, publishes AWS Standard Welding Procedure Specifications (SWPSs) which are initiated by the B2G Subcommittee on Procedure Qualification Records. Another purpose of Weld Testing is to ensure that the welds meet the requirements for mechanical and technological properties for their intended use. In judging the extent of such restriction, the Committee is guided by the number and scope of the supporting PQRs, including the specific material, thickness and value for each welding variable used for the development of the PQR, and by known fabrication experience. Would you prefer to share this page with others by linking to it? This video shows you how to first perform a visual examination on a groove weld according to the AWS D1.1 Structural Steel welding code. The UA's certification programs are a . ver. Gloves, TIG torch holders, magtabs, Mig That is why the UA-41 test is a frequent test used for the gatekeeper test to get a pipe welding job. It is important that the notch is present only in the weld deposit and that the cutting tool (abrasive disc, hacksaw, etc.) This numbering system will be used on all Welding Procedure Specifications revised or developed in the future. Im finishing up my schooling a the Hobart Institute of Welding Technology and will be taking the UA-21, UA-41, and possibly the UA-15 pipe tests. Defects that are found can be repaired before the welding process is finished or the part is put into service. The specimen dimensions vary according to plate thickness. It is fixed by punch marks at A, B and C. Actually two beads are laid, one from A to C and the other from B to C as indicated in the figure, so that the end craters meet at point C. The weld bead which is a brittle material is called the crack-starter weld. pliers, more, The Real and OriginalTIG Finger and !Xy6_Y7~T 3X~TV4e ~'6{\s`(yd?W-;lz't!'];74a>"E}%7mN66 ]8Jn_I6 ?8 G%/36&YTN.jPvZlLpbO0x =$|9=3L@I2xEfg1t= >>A)/6Q0$xL5=7B&AENBKL[60O a6QvwSn$Cy\"|Gq1!Vw;wcu:~ A radiograph is a picture of the weld that is created by radiation passing through the weld and striking a film on the other side. 0000082381 00000 n UA-70 SMAW 2" pipe & 3/16" plate .154" E7018 Structural Steel Fillet Weld Test UA-71 GMAW-S & GMAW 6" Sch. A machine design suggested by ASTM permits the use of various weights and various drop heights according to the strength level of the metal. 0000081503 00000 n The distance between the gauge lines should be 3 mm less than the width of the weld. Basis for Establishing a Standard Welding Procedure Specification (SWPSs). NDT involves inspecting components without damaging them. The PQRs are deleted after validation). oh by the way, the ua 21 test is on sched 120,not 40! 0000082757 00000 n This should be supported by a destructive peel or push-off test to check that a piece of the material can be pulled from the sheet at each projection. Both carbon steel pipe but the UA 41 is TIG and with 309 ss root and fill. Z - Identifies a Variation on a Process - Please note that the Z values will be assigned in simple chronological sequence - identifying a variation of a process using the same base metals with no consistent meaning from procedure to procedure. Thats why I recommend letting the pipe cool completely after the root pass is in.IF the root pass was heavy enough , the hot pass pretty much fills up the groove on these pipe couponsbut if you are still below flush more than 1/32" , you probably want to weld another fill pass before the cap. Visual testing is typically performed by a welder who is qualified to inspect welds. |. 0000082991 00000 n 0000079785 00000 n In other words, a welder can be qualified to weld both carbon and stainless steels using one test.That is why the UA-41 test is a frequent test used for the gatekeeper test to get a pipe welding job.Passing the UA41 or any other 6g weld test all starts with metal preparation.The bevel needs to be accurate at 37.5% plus or minus 2.5% that is very important because If the bevel is too steep, the root will not go in well. Two gauge lines are lightly marked on the specimen. It is the policy of the AWS B2 Committee that the range of conditions and variables listed for an SWPS be more restrictive than permitted by application of the full range of conditions and variables allowed by the B2.1 document or by other American National Standards (such as AWS D1.1 through AWS D1.6 or ASME Boiler and Pressure Vessel Code, Section IX). 0000080871 00000 n force pound-force (lbf) newton (N) 4.5 kip (1000 lbf) newton 4450 linear dimension inch (in) millimeter (mm) 25.4 tensile strength pounds per square inch (psi) pascal (Pa) 6895 (psi) kilopascal (kPa) 6.89 (psi) megapascal (MPa) 0.00689 mass pound mass (avdp) kilogram 0.454 angle, plane degree (angular) () radian (rad) 0.0175 flow rate cubic feet Welding is the process of joining two or more pieces of metal by heating the pieces to their welding temperature and then bringing them into contact with each other. 0000080411 00000 n outside diameter and also used an abrasive cartridge for the inside This procedure isn't suited for structural applications because it is designed for thin sheet metal, approximately 1 to . Ultrasonic uses sound waves to detect discontinuities in the weld. sPOS[]m7+n~ ) =Kh0#D{',M feather edge, a 3/32" filler rod for the root pass, a 1/8" filler rod 0000082470 00000 n Bend testing is a common welding inspection method that is used to verify weld quality. Visual Testing is a method of inspecting welds and weldments for defects. The test is performed by striking the weld with a falling pendulum and measuring the amount of energy required to break the weld. 0000080109 00000 n 0000081820 00000 n The objective is to provide industry with standard welding procedures that are suitable for specific welding operations without the requirement of welding test coupons and testing the completed welds. they are made with the intention of grinding out when you get there.bridge tacks are not allowed on most pipe welding tests so that is why I showed normal tack welds.Dont forget that as you close up the root, pressure will build inside the pipe. These SWPSs can often be acquired from AWS at a fraction of the cost that would be incurred for qualification of a PQR through welding and testing. To earn this certification, the welds must be 100 percent x-rayed and the welds made on four-inch schedule 80 (1/2" thick) pipe in the 2G horizontal position. B1. Welders use MPT to inspect welds for defects before releasing them for use. Ive been told it means Union American but Im positive thats not correct. 0000080720 00000 n 0000082908 00000 n bend test, corrosion test, hardness test, or RT) to verify and ensure the weld integrity. F) Work Out of Home, A) Corporate Executive/Management Destructive testing is a type of testing that is used to determine the quality of a weld. This creates a magnetic field which causes currents to flow through the metal object in a circular pattern (eddy currents). The breaking strength is measured in pounds per square inch (psi) or megapascals (MPa) or N/mm2. VerticalScope Inc. All Rights Reserved. The fractured surfaces are examined for internal defects such as porosity, incomplete root penetration, and slag inclusions. 0000080914 00000 n Non Destructive Testing (NDT) allows welders to detect these defects and fix them before they cause any problems. C) Engineering Management xref 0000081637 00000 n A notch is made at the center of the bead length and is placed at right angles to the weld bead and parallel to the specimen. The technique uses the human eye to examine welds for discontinuities, Lack of Fusion, porosity, slag inclusions, and other Welding defects. UA-91 WELD TEST SPECIFICATION Manual GTAW/SMAW Welding Processes MAXIMUM TIME PERMITTED FOR TEST IS 5 HOURS PIPE Coupon MATERIAL Specification of Base Metal (s): SA 106 Pipe Size: NPS 2, XXS Thickness: 0.436" wall JOINT CONFIGURATION = Single Vee Groove without backing or retainers = Bevel: 35 deg. The typical specimen dimensions for plate and pipe. ), AWS Sheet Metal Welding Code (D9.1), ASME Boiler and Pressure Vessel Code, Section IX, NAVSEA Technical Publication S9074-AQ-GIB-010/248, Requirements for Welding and Brazing Procedure and Performance Qualification, NAVSEA Technical Publication S9074-AR-GIB-010/278, Requirements for Fabrication Welding and Inspection, and Casting Inspection and Repair for Machinery, Piping and Pressure Vessels, MIL-STD-1689, Fabrication, Welding and Inspection of Ships Structure, NAVSEA Technical Publication T9074-AD-GIB-010/688, Requirements for Fabrication Welding, and Inspection of Submarine Structures, and American Bureau of Shipping (ABS) Naval Vessel Rules (NVR). 0000002319 00000 n The AWS B2 Committee on Procedure and Performance Qualification was formed in 1979. 0000081184 00000 n the coupons come beveled already. 0000080307 00000 n quality control requirements and procedures, weld joint inspection, nondestructive testing, repair of weld defects, and postweld treatment. And hardness testing is used to measure the hardness of a weld. The document explains the concept of a bend test for welds and what factors, beside poor weld quality, can cause test specimen to fail Need Information on Welding Dissimilar Metals in Heating and AC Piping Systems?

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