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Research and Development of Q690CF High Strength Steel with Rare Earth in Baotou Steel
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Mu Qin1, 2, Xiong Yang1, 2, Wei-yu Yang1, 2
Rare Earth Steel | 2020, 46(2) : 52 - 55
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Rare Earth Steel | 2020, 46(2): 52-55
• Quality of Variety and Experiment and Research •
Research and Development of Q690CF High Strength Steel with Rare Earth in Baotou Steel
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Mu Qin1, 2, Xiong Yang1, 2, Wei-yu Yang1, 2
Affiliations
  • 1.Technical Center of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China
  • 2.Inner Mongolia Enterprise Key Laboratory of Rare Earth Steel Products Research & Development, Baotou 014010, Inner Mongolia Autonomous Region, China
Published: 2020-04-25 doi: 10.13647/j.cnki.btgkj.2020.02.016
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In this paper, the composition design, process parameters and results of trial production in laboratory for Q690CF high strength steel with rare earth and low welding crack susceptibility are introduced. Its strength level could meet the standard requirements as well as the strength and toughness match well by adopting reasonable chemical composition system, controlled rolling and controlled cooling as well as off-line quenching and tempering process; the component requirements of welding without preheating can be met by reducing the carbon equivalent (Ceq) and welding crack susceptibility index (Pcm) so that it is with an extensive market development prospect.

Q690CF  /  low welding crack susceptibility  /  Pcm  /  quenching and tempering
勤牧, 杨雄, 杨维宇. 包钢含稀土Q690CF高强钢的研制. 包钢科技, 2020 , 46 (2) : 52 -55 . DOI: 10.13647/j.cnki.btgkj.2020.02.016
Mu Qin, Xiong Yang, Wei-yu Yang. Research and Development of Q690CF High Strength Steel with Rare Earth in Baotou Steel[J]. Science & Technology of Baotou Steel, 2020 , 46 (2) : 52 -55 . DOI: 10.13647/j.cnki.btgkj.2020.02.016
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Year 2020 volume 46 Issue 2
59
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Article Info
doi: 10.13647/j.cnki.btgkj.2020.02.016
  • Receive Date：2019-12-04
  • Online Date：2026-10-20
  • Published：2020-04-25
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  • Received：2019-12-04
Affiliations
    1.Technical Center of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China
    2.Inner Mongolia Enterprise Key Laboratory of Rare Earth Steel Products Research & Development, 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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