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Trial Production of Weather Resistant Steel Strip Q450NQR1 with CSP Production Line of Baotou Steel
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Jia Rui-jie1, Liu Zheng-feng1, Zhang Wei1, Huang Li2, Yue Yi-nan2
Science & Technology of Baotou Steel | 2024, 50(6) : 55 - 58
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Science & Technology of Baotou Steel | 2024, 50(6): 55-58
• Variety Quality and Experimental Study •
Trial Production of Weather Resistant Steel Strip Q450NQR1 with CSP Production Line of Baotou Steel
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Jia Rui-jie1, Liu Zheng-feng1, Zhang Wei1, Huang Li2, Yue Yi-nan2
Affiliations
  • 1. CSP Plant of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China
  • 2. Technical Center of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China
Published: 2024-12-25
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According to the characteristics of CSP production line of Baotou Steel, the trial production of 450 MPa grade weather resistant steel strip is carried out through adopting reasonable component design and formulating the process plan from processes of smelting to hot rolling. The good corrosion resistance is obtained with such alloy elements as Cu, Cr and Ni as well as grain refinement and precipitation strengthening are realized through microalloying of Ti and controlled rolling and controlled cooling. The microstructure and mechanical properties of optimized weather resistant steel strip Q450NQR1 are tested and analyzed. The results showed that the microstructure, grain size and mechanical properties of Q450NQR1 steel strip could meet the requirements of standard for railway steel Q450NQR1 as well as relative corrosion rate was 47.4%.

CSP  /  controlled rolling and controlled cooling  /  Q450NQR1  /  corrosion resistance
Jia Rui-jie, Liu Zheng-feng, Zhang Wei, Huang Li, Yue Yi-nan. Trial Production of Weather Resistant Steel Strip Q450NQR1 with CSP Production Line of Baotou Steel[J]. Science & Technology of Baotou Steel, 2024 , 50 (6) : 55 -58 .
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  • Receive Date：2024-09-02
  • Online Date：2025-10-20
  • Published：2024-12-25
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  • Received：2024-09-02
Affiliations
    1. CSP Plant of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China
    2. Technical Center of Inner Mongolia Baotou Steel Union 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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