چکیده مقاله
In this research, CEN ISO / TR 15608 sheet with a thickness of 25 to 40 mm was used by various types of corner and groove welding of this complex section for superstructure ofthe upper and lower frame of the electric arc furnace roof of the steelmaking unit with desirable quality and without complexity Special instructions for welding Heavy dutywelding, non distortion and cracking is an important issue that requires control of base metals, welding materials, preheating and other factors Quantum analysis was used toaccurately determine the chemical composition of the sheet According to the prepared welding instructions, a special electrode E7018 1 H4R with a diameter of 3 25 to 4 mmwas used due to the precise control of dilution and temperature between passes,otherwise there was a possibility of freezing cracks in the welded parts Reducing thelevel of residual stresses resulting from welding at the joint and facilitating the removal of hydrogen was the most important task Finally, the welded part was delivered afterdimension mapping for non complexity with an accuracy of 0 2 mm and non destructive testing was performed in all stages to evaluate the quality and health of the welds
کلیدواژهها
نویسندگان
Iman Hajiannia
PhD in Metallurgical Engineering, Isfahan University of Technology
Afzal Ravangard
Mobarakeh Steel Engineering Company
Abbas Abbasian
Department of Mechanical Engineering, Shahid Mohajer Technical and Vocational College, Isfahan Vocational Technical University, Iran
Gholamreza Tala Ashrafi
Department of Materials Engineering, Shahid Mohajer Vocational School, Isfahan University of Technology, Iran
Hossein NaderBeiki
Department of Materials Engineering, Shahid Mohajer Vocational School, Isfahan University of Technology, Iran
Pejman Ronasi
Senior experts of Pars Engineering CompanyMahak Espadana
شیوه ارجاع
Hajiannia, Iman and Ravangard, Afzal and Abbasian, Abbas and Tala Ashrafi, Gholamreza and NaderBeiki, Hossein and Ronasi, Pejman,1399,Preparation of superstructure welding instructions and operations the upper and lower frame of the roof of the electric arc furnace of the steelmaking unit,3rd International Conference on Welding and Non-Destructive Testing of Iran, 21st National Conference on Welding and Inspection and 10th National Conference on Non-Destructive Testing,Isfahan
ارائهشده در
مجموعه مقالات سومین کنفرانس بین المللی جوشکاری و آزمایش های غیرمخرب ایران، بیست و یکمین کنفرانس ملی جوش و بازرسی و دهمین کنفرانس ملی آزمایش های غیرمخرب13 اسفند 1399 · اصفهان