-Qualification and procedure for structural welding certification
-AWS electrode classification system
-AWS criteria for testing procedures (visual inspection and guided bend tests)
AWS QC7-93 D1.1 (SMAW & FCAW) 4G position code requirements
Additional safety measures for welding out of position (4G)
Metallurgy (must let parts air cool, cannot quench or coupon will become brittle)
Welders are their own community. Everyone in the welding lab is from different schools and comes together to achieve one main goal, learn to weld and obtain certifications to advance their careers. Also, being a female in the welding class I have become very close to the other girls in the class, sticking together through everything.
After we are done welding, we perform a visual inspection of the welds through non-destructive means. If the weld passes visual it goes on to destructive tests, in our case we bend them. We cut the pieces into 1.5″ strips, remove the backing strip, and sand the pieces and bend them to see if there are any intrinsic defects or discontinuities such as slag inclusion or porosity. When mine was bent there was no slag or porosity present. Upon final visual examination of the strips after subjected to guided bend tests, there were no defects that were larger than 1/32 of an inch, meaning it passed.
I am very proud of my bend test results since they did both pass. It was nerve wracking having the whole class watching my pieces being bent, knowing I’d get teased if they broke. Since I am a girl I am always trying to prove myself to the boys and I think most people, including myself, expected it to fail. But allowing the boys to see it being bent really helped prove myself to everyone. During the welding process of the coupons though, I do usually get frustrated. Some things are totally out of our control since we have so many variables in welding. Like the backing strip not laying down correctly causing the arc strike to go under it, instead of the groove where the weld should be. I have also come across a lot of clustered porosity in my flux core welds because of shielding gas problems or contaminated wire, neither of which I can control. But with becoming frustrated I learn how I can fix the problems and do better next time.
Students and administrators at Butler Tech can submit their projects to us for inclusion on the website. Please only submit projects with appropriate content and that are clearly documented with instructions and outlines, including photos and other references to help readers.