The invention relates to the technical field of
rare earth alloy, and provides an
alloy technology of adding Ce into bearing steel for inhibiting formation of
TiN compound inclusion. The
alloy technology comprises the following steps: when a primary
smelting furnace carries out steel tapping, making pre-smelted slags; in an LF (
Ladle Furnace) refining process, making refining slags; at the end stage of vacuum
smelting, adding
rare earth Ce of which the adding amount is 0.15-0.75kg / (
ton of steel); after the
rare earth Ce is added, carrying out steel
ladle bottom blowing Ar for soft stirring. According to the alloy technology, the rare earth Ce is added into bearing steel, MgAl2O4 in the steel is modified into a specific type of rare earth
oxide (Ce2O3) or rare earth oxysulfide (Ce2O2S), andthe separation of the heterogeneous
nucleation of
TiN on MgAl2O4 in a solidification process is inhibited, the generated rare earth
oxide or rare earth oxysulfide has a small size, and the
hardness is far lower than that of MgAl2O4 inclusion. The obtained simple substance
TiN inclusion has the advantages of small size and even distribution, and a new method is provided for improving the fatigue life of bearing steel.