International symposium on rating of non-metallic inclusions in bearing steels

Tribology ◽  
1974 ◽  
Vol 7 (6) ◽  
pp. 274-275
Author(s):  
H. Walz
Keyword(s):  
International Symposium ◽  
Bearing Steels ◽  
Metallic Inclusions

Effect of non-metallic inclusions on butterfly wing initiation, crack formation, and spall geometry in bearing steels

2015 ◽  
Vol 80 ◽  
pp. 203-215 ◽  
Author(s):  
Sina Mobasher Moghaddam ◽  
Farshid Sadeghi ◽  
Kristin Paulson ◽  
Nick Weinzapfel ◽  
Martin Correns ◽  
...  
Keyword(s):  
Crack Formation ◽  
Butterfly Wing ◽  
Bearing Steels ◽  
Metallic Inclusions

scholarly journals Size of Non-Metallic Inclusions in High-Grade Medium Carbon Steel

2014 ◽  
Vol 14 (4) ◽  
pp. 55-60 ◽  
Author(s):  
T. Lipiński ◽  
A. Wach
Keyword(s):  
Raw Materials ◽  
Extraction Methods ◽  
Medium Carbon Steel ◽  
Graphical Form ◽  
Test Results ◽  
Medium Carbon ◽  
Bearing Steels ◽  
Metallic Inclusions ◽  
Chemical Composition Of Steel ◽  
Strength And Durability

Abstract Non-metallic inclusions found in steel can affect its performance characteristics. Their impact depends not only on their quality, but also, among others, on their size and distribution in the steel volume. The literature mainly describes the results of tests on hard steels, particularly bearing steels. The amount of non-metallic inclusions found in steel with a medium carbon content melted under industrial conditions is rarely presented in the literature. The tested steel was melted in an electric arc furnace and then desulfurized and argonrefined. Seven typical industrial melts were analyzed, in which ca. 75% secondary raw materials were used. The amount of non-metallic inclusions was determined by optical and extraction methods. The test results are presented using stereometric indices. Inclusions are characterized by measuring ranges. The chemical composition of steel and contents of inclusions in every melts are presented. The results are shown in graphical form. The presented analysis of the tests results on the amount and size of non-metallic inclusions can be used to assess them operational strength and durability of steel melted and refined in the desulfurization and argon refining processes.

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