چکیده مقاله
In this case study, the aim was to do a failure analysis of the welds in the China hatequipment The China hat is installed in direct reduction furnaces working with PEREDtechnology It causes disturbances in the gas flow and, as a result, increases the rate ofmass transfer in the PERED furnace China hat is made of AISI 310s steel 310s steel is awear and corrosion resistance steel suitable for uses in high temperatures and it is weldedby ER 309L filler metal In order to analysis this failure to prevent them from happeningagain, a microstructural investigation and analysis of related diagrams were done Theresults showed that according to the working conditions of the China hat and thesensitivity of 310s steel to cracking, using high quality sheets that ensures the correctpercentage of elements is necessary if possible, adding a small amount of La or Ti and aconsiderable amount of Mn more than normally contained also according to theScheffler diagram ER 309L electrodes do not tolerate these working conditions, andthere is a possibility of failure due to the penetration of carbon and brittle elements intothe interface For these welds ER 310 electrodes are more Suitable alloys
کلیدواژهها
نویسندگان
Parisa Arbabzadeh
Metallurgy expert, MME Co
Iman Hajiannia
Phd, Department of Materials and Metallurgical Engineering, Technical and Vocational University TVU , Tehran, Iran, and MSE Co
شیوه ارجاع
Arbabzadeh, Parisa and Hajiannia, Iman,1401,Investigation and analysis of weld failure in the China hat equipment ofthe steel direct reduction furnace,5th International Conference on Welding and Non Destructive Testing & 23rd National Conference on Welding & Inspection & 12th National Conference on NDT,Isfahan
ارائهشده در
مجموعه مقالات پنجمین کنفرانس بین المللی جوشکاری و آزمایش های غیرمخرب،بیست و سومین کنفرانس ملی جوش و بازرسی و دوازدهمین کنفرانس ملی آزمایش های غیرمخرب و اولین کنفرانس ملی ساخت افزایشی10 اسفند 1401 · اصفهان