蒋鲤平, 徐建飞, 于飞. 120 t LF精炼过程搅拌强度对Q195低碳钢中大尺寸夹杂物数量的影响[J]. 特殊钢, 2021,42(4):47-50.
蒋鲤平, 徐建飞, 于飞. Influence of 120 t LF Stirring Intensity on Amount of Large Size Inclusions in Low Carbon Q195 Steel during Refining[J]. Special Steel, 2021, 42(4): 47-50.
蒋鲤平, 徐建飞, 于飞. 120 t LF精炼过程搅拌强度对Q195低碳钢中大尺寸夹杂物数量的影响[J]. 特殊钢, 2021,42(4):47-50.DOI:
蒋鲤平, 徐建飞, 于飞. Influence of 120 t LF Stirring Intensity on Amount of Large Size Inclusions in Low Carbon Q195 Steel during Refining[J]. Special Steel, 2021, 42(4): 47-50.DOI:
The Q195 steel is produced by M120 t BOF→LF→Ca addition→160 mm x 160 mm CC” process. It was found by tracing test that the number of ≥27μm large size inclusions at test area 50 x 400 mm
2
in the billet is 31 and generated by LF top slag entrapped during gas stirring
calcium treatment formed CaS
submerged entry nozzle material stripped and formed endogenous large size calcium-aluminate inclusion in steel as the flow rate of argon is in the range of 300~600 L/min. The proportion of LF top slag entrapped is about 29. 1% in all the large size inclusions. As the flow rate of argon decreases from 300~600 L/min to 100 L/min
it is found that the LF top slag entrapped could be significantly decreased
at some test area the ≥27μm inclusions number decreases to 19.