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rokldget50
Wysłany: Pią 10:53, 29 Kwi 2011
Temat postu: Tig Welding Certification
Industrial piping, (including pot tubes)
2. Aerospace and aviation (industry and overhaul/repair)
For tig welding certification in piping, pressure vessels, and boilers,
jordans 2011
, ASME section IX of the "Boiler and Pressure Vessel Code" specifies the ingredients for acceptable welding tests.
For Aerospace tig welding,
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,
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, the American Welding Society (AWS) D17.1 - "Specification for Fusion welding for Aerospace Applications" is the code for welding certification tests.
Additional typically than not, a 6G position welding test is needed to certify for Pipe welding jobs. On several boiler jobs,
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, two" massive wall tubing is tig welded all the means out in the 6G position creating the welder both switch hands, or at least get in some uneasy positions. That is why 6G position Tig welding tests are thought the most tough.
Customarily, page metal test items within the thickness alter are used for aerospace welder qualification testing. The 6G welding retard is solely used often as a result of it will no accurately characterize the coverage of welding tasks fulfilled for numerous aerospace and aviation welding petitions. AWS D17.1 even contains a provision for welders apt evidence above a scrap part or mimic up of a weld that is no represented well along a explicit groove or fillet weld.
ASME partition IX Boiler and Pressure Vessel Code has been nigh for a terribly meantime, merely AWS D17.1 is relatively current and was written to interchange two antique Mil standards... 1595a and 2219.
One publish every welding certification descriptions have in prevalent is that the test welds that are elected for use for certification tests only enable the welder for a vary of locations, thicknesses, and mutual types. No single check qualifies for entire the attainable material, thickness, situations, and mutual sorts that are likely. That is why some welders prop a dozen or a lot of certifications.
One cardinal distinction in soldering tests for these 2 industries namely namely the initial welding take a see at for Pipe welding jobs are largely done using cheap carbon iron or stainless iron. Different matters like inconel are typically secondhand yet however nowhere near for abundant as carbon steel and stainless.
Within the Aerospace and aviation industries, It's not distinctive for a welder to be tested on carbon or low alloy steels,
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, stainless steels, nickel alloys, aluminum, magnesium, titanium, cobalt alloys, and even some refractory alloys like divide welding tests necessitated for every material category.
One of the main variations in Tig welding pipe and tig welding helicopter or aerospace portions is during the thickness of material. In Aircraft welding , maximum anything is thinner. and that method smaller electrodes, smaller filler cable, smaller in Aircraft and Aviation tig welding, a 1/16" wand is taken into list beautiful big.
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