AWS D9.1/D9.1M pdf free download
AWS D9.1/D9.1M pdf free download.Sheet Metal Welding Code.
4. General Provisions for Arc Welding
4.1 Base Metal
4.1.1 Base metals to be joined under this code include coated and uncoated forms of carbon steel, high strength low- alloy steel, chromium and chromium-nickel stainless steel alloys, aluminum and aluminum alloys, copper and copper alloys, nickel and nickel alloys, and titanium and titanium alloys.
4.1.2 Weld-through paint primers, galvanized or aluminized coatings, or anti-spatter compounds, may remain on the metal provided the final weld quality meets the requirements of this Code.
4.2 Filler Metal
4.2.1 Filler metals shall be compatible with the base metal designated on the drawings or specified by the Engineer.
4.2.2 Recommended filler metals are listed in Annex A.
4.3 Processes. Joining processes under this code shall include shielded metal arc welding (SMAW), gas metal arc welding (GMAW), flux cored arc welding (FCAW). gas tungsten arc welding (GTAW), plasma arc welding (PAW), and carbon arc welding (CAW). Other processes may be used, provided they are qualified in accordance with the requirements of this code.
5. Arc Welding Procedure Qualification
5.1 Prior Procedure Qualification
5.1.1 The use of welding procedure specifications qualified in accordance with AWS B2.1iB2.lM, Specificallonfi)r IJWding P,vcedure and Performance QualifIcation, shall be accepted for welding to this code. Standard Welding Procedure Specifications (SWPSs) published by AWS shall be accepted as qualified procedures.
5.1.2 The Engineer, exercising proper discretion, may accept evidence of previous qualification of specific procedures to be used on work being performed under this code.
5.2 Required Procedure Qualification Tests
5.2.1 Welding Procedure Specification. The qualification of a Welding Procedure Specification (WPS) shall be the responsibility of the Contractor. Each welding procedure to be used in conjunction with this code shall be prepared as a WPS to be used in fabrication and installation. An independent third party may perform the actual procedure qualification tests and prepare the forms; however, the Contractor shall be responsible for certifying acceptance in accordance with the requirements of this code (see 5.5. 1). All required information for the WPS. listed in 5.3. shall be recorded on a form similar to that shown in Annex D.
5.2.2 Typical Joints. Qualification of any complete joint penetration K’JP) groove weld shown in Annex G provides qualification for any groove. fillet, plug or slot weld. Qualification of any fillet weld shown in Annex G provides qualification for any fillet weld. Qualification of a fillet weld does NOT provide qualification for a groove, plug or slot weld.
5.2.3 Preparing Joint Chosen for Testing. The chosen joint type shall be prepared as a longitudinal weld joint between two 3 in by 6 in [75 mm by 150 mm] minimum sheets, assembled using one of the joints types shown in Figure 1 or by using the actual joint to be used. Qualification testing using the butt joint in Figure 1 shall qualify all groove. fillets plug or slot weld joint types.
5.2.4 Welding the Test Joint. The joint shall be welded using the process specified by the WPS (see 5.2.1).
5.3 Limitations of Procedure Qualification. A qualified welding procedure shall be used only with the allowable ranges of operating variables tested during qualification. These limits of essential variables are described in 5.3.1 through 5.3.10. The variables shall be recorded on a PQR form similar to that shown in Annex F.AWS D9.1/D9.1M pdf download.
