Tig Welding Certification – Discrepancies in the Pipe Welding, Aerospace, and Aviation Industries
2 industries that need tig welding certification are:
- Industrial piping, (which includes boiler tubes)
- Aerospace and aviation (manufacture and overhaul/fix)
For tig welding certification in piping, stress vessels, and boilers, ASME area IX of the “Boiler and Force Vessel Code” specifies the conditions for suitable welding assessments.
For Aerospace tig welding, the American Welding Culture (AWS) D17.1 – “Specification for Fusion welding for Aerospace Apps” is the code for welding certification assessments.
Extra typically than not, a 6G place welding take a look at is essential to certify for Pipe welding positions. On quite a few boiler work opportunities, 2″ heavy wall tubing is tig welded all the way out in the 6G place generating the welder either change arms, or at the very least get in some uncomfortable positions. That is why 6G posture Tig welding tests are considered the most complicated.
Most of the time, sheet steel exam parts in the .020″-.125″ thickness variety are utilized for aerospace welder qualification tests. The 6G welding examination is only applied often because it does not properly represent the scope of welding tasks carried out for most aerospace and aviation welding apps. AWS D17.1 even has a provision for welders to certify on a scrap section or mock up of a weld that is not represented well by a simple groove or fillet weld.
ASME section IX Boiler and Stress Vessel Code has been all over for a extremely prolonged time, but AWS D17.1 is fairly new and was written to switch 2 old Mil specifications… 1595a and 2219.
Just one thing the two welding certification requirements have in typical is that the examination welds that are picked to be used for certification exams only qualify the welder for a assortment of positions, thicknesses, and joint kinds. No single test qualifies for all the feasible material, thickness, positions, and joint kinds that are attainable. That is why some welders keep a dozen or far more certifications.
Just one main distinction in welding assessments for these 2 industries is that the first welding examination for Pipe welding employment are largely carried out utilizing minimal carbon steel or stainless steel. Other materials like inconel are from time to time applied also but not practically as a great deal as carbon steel and stainless.
In the Aerospace and aviation industries, It is not unheard of for a welder to be examined on carbon or minimal alloy steels, stainless steels, nickel alloys, aluminum, magnesium, titanium, cobalt alloys, and even some refractory alloys like Niobium…with different welding assessments needed for just about every content group.
A single of the key variations in Tig welding pipe and tig welding aircraft or aerospace components is in the thickness of substance. In Aircraft welding , most all the things is thinner. and that suggests smaller electrodes, more compact filler wire, smaller sized torches…and in Aircraft and Aviation tig welding, a 1/16″ rod is thought of quite major.