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Cause Analysis on Center Porosity of Q345B Round Continuous Casting Billet
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Xiao-dong Feng1, Guang-lin Zhao2, Hai-long Jiang1
Rare Earth Steel | 2018, 44(5) : 60 - 63
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Rare Earth Steel | 2018, 44(5): 60-63
• Quality of Variety and Experiment and Research •
Cause Analysis on Center Porosity of Q345B Round Continuous Casting Billet
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Xiao-dong Feng1, Guang-lin Zhao2, Hai-long Jiang1
Affiliations
  • 1.Technical Center of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China
  • 2.Steel Tube Co. of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China
Published: 2018-10-25 doi: 10.13647/j.cnki.btgkj.2018.05.017
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There was obvious center porosity in the production of Q345B round continuous casting billet, so the gas content and hot acid of continuous casting billet were tested as well as the solidification process of continuous casting billet was analyzed. The results indicated that the lower strength of mold electromagnetic stirring and final electromagnetic stirring caused fewer nuclear of grain, the lower strength of secondary cooling caused the full growth of grains, the grains piled up at the end of liquid core and divided the molten steel, the volume of molten steel in enclosed cavity was shrinked in the solidification process and formed small contraction cavity. The relative improvement measures are put forward based on this.

round continuous casting billet  /  center porosity  /  solidification process  /  divide  /  contraction cavity
丰小冬, 赵广林, 姜海龙. Q345B圆形连铸坯中心疏松的成因分析. 包钢科技, 2018 , 44 (5) : 60 -63 . DOI: 10.13647/j.cnki.btgkj.2018.05.017
Xiao-dong Feng, Guang-lin Zhao, Hai-long Jiang. Cause Analysis on Center Porosity of Q345B Round Continuous Casting Billet[J]. Science & Technology of Baotou Steel, 2018 , 44 (5) : 60 -63 . DOI: 10.13647/j.cnki.btgkj.2018.05.017
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Year 2018 volume 44 Issue 5
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Article Info
doi: 10.13647/j.cnki.btgkj.2018.05.017
  • Receive Date：2018-03-09
  • Online Date：2026-10-20
  • Published：2018-10-25
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  • Received：2018-03-09
Affiliations
    1.Technical Center of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China
    2.Steel Tube Co. of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China
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Citations
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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