Influence of non-metallic inclusions on the destruction of mechanically loaded steel products

Olga Myronova; Vyacheslav Goryany

doi:10.5937/zasmat2102113M

Authors

Olga Myronova Univerzitet u Duisburgu, Institut za tehnologije metala, Duisburg, Nemačka Author
Vyacheslav Goryany Karl Buch Walzengiesserei GmbH & Co. KG, Siegen, Nemačka Author

DOI:

https://doi.org/10.5937/zasmat2102113M

Keywords:

non-metallic inclusions, steel rollers, mechanical fracture, thermal expansion coefficient, metallographic tests

Abstract

The paper describes in detail the reasons for the cracking of steel products, despite the fact that all the conditions of mechanical loading were met - the working stresses were much less than the maximum tensile stress of the applied type of steel. Deep metallographic analysis, as well as stress analysis show that the main cause is the formation of non-metallic inclusions in the material of the product, which essentially change its mechanical characteristic.

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