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The AWS defines welding PQR as a record of welding variables used to produce an acceptable test weldment and the results of tests conducted on the weldment to qualify a Welding Procedure Specification. For steel construction (civil engineering structures) AWS D1.1 is a widely used standard.
Automotive spot weld testing AWS D8.14: Automotive arc welding (aluminum) AWS D9.1: Sheet metal welding AWS D10.10: Heating practices for pipe and tube AWS D10.11: Root pass welding for pipe AWS D10.12: Pipe welding (mild steel) AWS D10.13: Tube brazing (copper) AWS D10.18: Pipe welding (stainless steel) AWS D11.2: Welding (cast iron) AWS D14.1 ...
AWS Characteristics Applications Air acetylene welding (321) AAW Chemical welding process, not popular Limited Oxyacetylene welding: 311: OAW Combustion of acetylene with oxygen produces high-temperature flame, inexpensive equipment Maintenance, repair Oxygen/Propane welding 312: Gas welding with oxygen/propane flame Oxyhydrogen welding: 313: OHW
For example, AWS B1.11 explains how to visually examine welds; AWS B2.1-1-004 explains welding carbon steel of thickness range of 18 through 10 gauge with semiautomatic metal gas arc welding; and AWS C2.20/C2.20M explains metalized zinc cathodic protection systems. Some codes also describe the standards used by AWS to certify welders ...
In addition to welders and welding machine operators, there are also schemes to independently certify welding inspectors and related specialities. The duties of the welding inspector are described in ISO 14731; [12] however the requirement for inspector certification are not standardized, so there are differences in requirement between the various schemes.
The technology in use on the shop floor of Melbourne firm Unidrive, which used WeldPrint to monitor the quality of steering-column component welds in more than half a million Australian vehicles in the period 2001–06. WeldPrint for arc welding became available in mid-2001. About 70 units have been deployed since 2001, about 90% used on the ...
The symbolic representation of a V weld of chamfered plates in a technical drawing. The symbols and conventions used in welding documentation are specified in national and international standards such as ISO 2553 Welded, brazed and soldered joints -- Symbolic representation on drawings and ISO 4063 Welding and allied processes -- Nomenclature of processes and reference numbers.
The weld access hole or rat hole is a structural engineering technique in which a part of the web of an I-beam or T-beam is cut out at the end or ends of the beam. The hole in the web allows a welder to weld the flange to another part of the structure with a continuous weld the full width on both top and bottom sides of the flange.