Abstract:Morphology and composition of oxide inclusions in gear steel 8620RH continuous cast billet were analyzed by SEM. Combining with specific production process, the main reason of causing overproof B inclusions rate in round steel was spherical inclusions with diameter dimension ≥25 μm, which came from slag. The improvement measures including increasing inclusion removal effect in refining process, preventing unsteady continuous casting process slag entrapment and improving inclusion removal effect of tundish, were made.
李 涛,孙大利,安 杰. 汽车齿轮钢8620RH连铸坯中夹杂物研究[J]. 中国钢铁期刊网, 2017, 36(03): 39-42.
LI Tao,SUN Da-li,AN Jie. Study on Inclusion of Automobile Gear Steel 8620RH in Continuous Cast Billet. Chinese Journal of Iron and Steel, 2017, 36(03): 39-42.