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Research on Quality of Continuous Casting Head Slab of Interstitial Free (IF) Steel
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Bin Li, Xin Ma, Yun-bo Duan, Cheng Su
Science & Technology of Baotou Steel | 2022, 48(2) : 12 - 18
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Science & Technology of Baotou Steel | 2022, 48(2): 12-18
• Production Practice and Management •
Research on Quality of Continuous Casting Head Slab of Interstitial Free (IF) Steel
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Bin Li, Xin Ma, Yun-bo Duan, Cheng Su
Affiliations
  • Inner Mongolia Baotou Steel Rare Earth Steel Plate Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China
Published: 2022-04-25
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The surface quality, rimhole, center porosity, center segregation, contents of oxygen and nitrogen and inclusions for the head slab of IF steel produced by a steel mill are studied as well as the rolling defects of head slab are tracked and with the treatment of peeling with flame. The study results showed that the surface quality and rimhole of head slab were improved with the increase of slab length; level of center porosity for internal soundness exceeded the standard at slab length of 1 m, while there was no abnormality seen for center segregation; contents of oxygen and nitrogen tended to decrease with the increase of slab length; number of such inclusions as Al2O3, TiN and complex inclusion of Al2O3-TiN decreased with the increase of slab length; there was large complex inclusion of Al2O3-MgO-CaO at 1 m of head slab; main rolling defects of head slab were such subcutaneous inclusion defects as deoxidation product of Al2O3 and slag entrapment of mould level fluctuation; quality of head slab could be effectively improved with the treatment of peeling with flame.

ultra-low carbon steel  /  continuous casting head slab  /  inclusion  /  manual finishing  /  cleanliness
Bin Li, Xin Ma, Yun-bo Duan, Cheng Su. Research on Quality of Continuous Casting Head Slab of Interstitial Free (IF) Steel[J]. Science & Technology of Baotou Steel, 2022 , 48 (2) : 12 -18 .
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  • Receive Date：2022-02-10
  • Online Date：2025-10-21
  • Published：2022-04-25
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  • Received：2022-02-10
Affiliations
    Inner Mongolia Baotou Steel Rare Earth Steel Plate Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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