杨虎林, 何平, 翟玉春. Progress on Control of Ultra-Low-Oxygen Content and Non-Metallic Inclusions in High Quality Bearing Steel[J]. Special Steel, 2013, 34(2): 16-19.
杨虎林, 何平, 翟玉春. Progress on Control of Ultra-Low-Oxygen Content and Non-Metallic Inclusions in High Quality Bearing Steel[J]. Special Steel, 2013, 34(2): 16-19.DOI:
The ultra-low-oxygen content and low rating of inclusions are key indexes for high quality bearing steel. The influence factors on control of ultra-low-oxygen content and nonmetallic inclusions in high quality bearing steel are analyzed including removal of slag during tapping
deoxidation with aluminium
high basicity refining slag
stirring for long time at vacuum or atmosphere
and available process flow sheet. It is obtained that the key factor to produce ultra-clean high quality bearing steel with 5 x 10
-6
[O
]
≤ 1 x 10
-6
[ H
]
and ≤ 12 x 10
-6
[Ti
]
is strict control of each steelmaking procedure. The quality of bearing steel produced at home is analyzed and the research orientation for high-quality bearing steel is put forward.