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Information × Registration Number 0218U006676, 0118U000870 , R & D reports Title Investigation of microstructure features of tire-wheel products made from continuous blanks, and determination of the reasons for their lack of ultrasonic control popup.stage_title Head Domina E.G., Registration Date 12-07-2018 Organization IRON & STEEL INSTITUTE NATIONAL ACADEMI OF SCIENCE OF UKRAINE popup.description2 It has been established that the observed features of the macrostructure of the hub of wheel ? 705 mm cannot be classified as a segregation band and are not a defect B 27 in the macrostructure. Visible heterogeneity is a natural feature of a steel macro constitution, which depends on the formation of the main crystalline zones of the original continuous casting and in this case not is a defect B 28 in the macrostructure. It is shown that the reason for the reject of railway wheels ? 1016 mm with ultrasonic control is defects of microstructure in the form of scattered gas bubbles and exogenous inclusion. The area occupied by these defects on sample plots exceeds the level established by the standard M - 107 / M - 208 - 0,750%. Product Description popup.authors Бабаченко О.І. Дьоміна Е.Г. Книш А.В. Кононенко А..А. Хулін А.Н. Шпак Е.А. popup.nrat_date 2020-04-02 Close