| 150t 顶底复吹转炉-150 t钢包炉生产60Si2Mn(A) 弹簧钢的 工艺和质量 |
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| 引用本文： | 梁福斌,刘新生. 150t 顶底复吹转炉-150 t钢包炉生产60Si2Mn(A) 弹簧钢的 工艺和质量[J]. 特殊钢, 2006, 27(4): 39-41 |
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| 作者姓名： | 梁福斌 刘新生 |
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| 作者单位： | 河北理工大学冶金与能源学院，唐山063009 |
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| 摘 要： | 采用150 t顶底复吹转炉-150 t LF精炼(加铝1．2 kg／t、钡合金1．0 kg／t、Ar气搅拌、喂SiCa线)-165 mm×165 mm方坯连铸机生产60Si2Mn(A)弹簧钢。LF末期钢中氧含量为(15～25)×10-6,残余铝含量0．020％-0．030％。铸坯的低倍组织、二次枝晶间距和电解夹杂物分析结果表明,铸坯的组织致密;钢中大部分夹杂物为尺寸≤20μm的颗粒状SiO2、球形(Mn,Fe)O·SiO2和MnS,说明钡合金的使用,有利于降低钢中氧含量和改变夹杂物的形态。
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| 关 键 词： | 顶底复吹转炉 60Si2Mn(A)弹簧钢 LF精炼 Ba合金 夹杂物 |
| 收稿时间： | 2006-02-24 |
| 修稿时间： | 2006-02-24 |
Process and Quality of Spring Steel 60Si2Mn(A) Produced by an 150 t Top and Bottom Combined Converter-150 t Ladle Furnace |
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| Liang Fubin,Liu Xinsheng. Process and Quality of Spring Steel 60Si2Mn(A) Produced by an 150 t Top and Bottom Combined Converter-150 t Ladle Furnace[J]. Special Steel, 2006, 27(4): 39-41 |
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| Authors: | Liang Fubin Liu Xinsheng |
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| Affiliation: | School of Metallurgy and Energy Resource,Hebei Palytechnic University,Tangshan 063009 |
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| Abstract: | The spring steel 60Si2Mn(A)was produced by an 150 top and bottom combined converter - 150 t ladle furnace(adding Al 1.2kg/t, Ba alloy 1.0 kg/t, Ar stiring, feeding SiCa wire)- 165 mmx165 mm billet concaster.The oxygen content in steel at end phase of ladle furnace was (15~25)×10-6 and residual aluminium was 0.020%～0.030%.The results of analysis on macrostructure of billet, distance between secondary crystal branches and electrolytic analysis of inclusion showed that the most of inclusion in steel were SiO2 particle,spherical (Mn,Fe)O · SiO2 and MnS with size ≤20 pm. It proves that added barium alloy is available decreasing oxygen content in steel and modifying morphology of inclusion. |
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| Keywords: | Top and Bottom Combined Converter Spring Steel 60Si2Mn(A) LF Refining Ba Alloy Inclusion |
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