AWS D14.3/D14.3M:2019 pdf free download

AWS D14.3/D14.3M:2019 pdf free download.Specification for Welding Earth moving, Construction, Agricultural, and Ground-Based Material Handling Equipment.
9. Workmanship and Welding Quality Requirements
9.1 Scope. This clause presents quality and workmanship levels which are expected to be normally attainable within this industry. General or specific applications and designs may allow levels different than those listed here. Such differences, when specified and documented, may be applied.
9.2 General Requirements
9.2.1 All requirements of this clause shall be satisfied in the production and inspection of welded assemblies covered under this specification.
9.2.2 Welding shall not be done when the temperature of the part to be welded is lower than that specified on the engineering drawing or WPS, nor shall welding be done when the weldment is exposed to high winds, drafts, or moisture.
The temperature of the part, when not specified, shall not be lower than 50 °F [10 °CJ. Winds or drafts must be limited to avoid affecting gas shielding with appropriate processes. In addition, winds and drafts shall also be limited to avoid excessive cooling rates which may affect properties of the weld and heat-affected zone.
9.2.3 Welding variables shall be in conformance with the requirements of the applicable written WPS that has been qualified to the requirements of Clause 7. All welders, welding operators, operators of automatic welding equipment, and tack welders shall be instructed in the proper use of the applicable WPS, and the applicable WPS shall be followed during the performance of welding.
9.2.4 All welders, welding operators, operators of automatic welding equipment, and tack welders employed to weld under the requirements of this specification shall have been qualified by the methods specified in Clause 8. Each welder, welding operator, operator of automatic welding equipment or tack welder shall only perform welding within the limitation of variables to which they are currently qualified.
9.3 Preparation of Materials
9.3.1 Joint edges shall be uniform and free from fins, notches, tears, cracks, and other irregularities that will adversely affect the quality or strength of the weld or member. The welding surface shall also be free from moisture, loose or thick scale, slag, heavy rust or oxidation, grease, or other foreign material that will adversely affect the quality or strength of the weld or produce objectionable fumes.AWS D14.3/D14.3M:2019 pdf free download.