EVALUATION OF THE RANGE OF POSSIBLE CHANGES IN THE STRENGTH OF SPHEROIDAL GRAPHITE CAST IRON CASTINGS FOR BRINELL HARDNESS

SANDOMIRSKII Sergei G., D. Sc. in Eng., Assoc. Prof., Head of the Laboratory of Metallurgy in Mechanical Engineering, Joint Institute of Mechanical Engineering of the National Academy of Sciences of Belarus, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

SANDOMIRSKAYA Elena G., Researcher, Joint Institute of Mechanical Engineering of the National Academy of Sciences of Belarus, Minsk, Republic of Belarus

The analysis of the range of changes in the strength σ_В of spheroidal graphite cast iron (SGCI) is made. An analytical description of the range of variation σ_В as a function for Brinell hardness HB is developed. It is shown that graphite inclusions in SGCI always reduce its σ_В to a greater extent than HB in comparison with carbon steel. The result is intended to determine the guaranteed size and range of possible changes σ_В in the casting of SGCI without destroying it.

cast iron, mechanical properties, strength, hardness

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