Research on Normalizing Process of Q345FTE/F Steel for Wind Power Generation Tower
FAN Wei
TONG Mingwei
ZHANG Kaiguang
KONG Junhua
Abstract：Q345FTE/F used in wind turbine tower were produced by controlled rolling and controlled cooling technology with single or combination of Nb, V, Ti and Ni in vacuum induction furnace. After normalizing, the yield strength and tensile strength of the steel is more than 360 MPa and higher than 500 MPa respectively. The elongation of test steel is above 30%except Ti+Ni series steel( that has the elongation 27%), they all can meet the technical requirements. The impact energy values of Ti series steel at-60℃is less than 100 J. After normalizing, the impact energy values of Ti, Ti+Ni and Nb+Ti series steel decreased significantly, however, that of Nb, Nb+Ni and V+Ni series steels almost unchanged. The normalizing temperature is slightly higher for Ti series steel which cause austenite grain coarsening, and the impact energy values decreased. It is necessary to reduce the normalizing temperature.
Keywords：wind power generation tower steelQ345FTE/Fnormalizingmechanical propertymicrostructure
Publication Date：2015-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：3( 31-33 )