| Q345E钢棒材低温冲击功的研究 |
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| 引用本文： | 李绍杰,王国营,樊一丁,齐建军.Q345E钢棒材低温冲击功的研究[J].河北冶金,2011(5):23-25,30. |
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| 作者姓名： | 李绍杰 王国营 樊一丁 齐建军 |
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| 作者单位： | 河北钢铁集团,石钢公司,河北,石家庄,050031 |
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| 摘 要： | 研究了单独铝微合金化Q345E钢Φ20mm棒材普通轧制工艺和控制控冷轧制工艺在不同温度下的冲击功、强度变化,并对试样的晶粒度和金相组织进行了分析。采用控轧控冷的轧制生产工艺,可使Q345E棒材轧态的晶粒度细化至9.5级,-40℃冲击功达到120J以上,达到了标准的要求,降低了生产成本,提高了钢材的市场竞争力。
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| 关 键 词： | Q345E钢 棒材 低温冲击功 晶粒度 组织 研究 |
RESEARCH ABOUT LOW-TEMPERATURE IMPACT WORK OF Q345E STEEL BAR |
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| Li Shaojie,Wang Guoying,Fan Yiding,Qi Jianjun.RESEARCH ABOUT LOW-TEMPERATURE IMPACT WORK OF Q345E STEEL BAR[J].Hebei Metallurgy,2011(5):23-25,30. |
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| Authors: | Li Shaojie Wang Guoying Fan Yiding Qi Jianjun |
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| Affiliation: | (Shijiazhuang Iron and Steel Company,Hebei Iron and Steel Group,Shijiazhuang,Hebei,050031) |
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| Abstract: | It is studied the change of impact work and strength of Φ 20 mm bar of single Al-microalloying Q345E steel under different temperature,separately produced by normal rolling process and controlled-rolling and controlled-cooling process,analyzed the grain size and metallographic structure of sample.With the later process its grain size can be fined to 9.5 grade,the impact work under-40 ℃ reached over 120 J. |
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| Keywords: | Q345E steel bar low-temperature impact work grain size structure study |
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