| 铁铬铝合金电渣重熔锭内裂纹的分析和工艺改进措施 |
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| 引用本文： | 白李国,李京社,杨树峰,李刚,杨宏博. 铁铬铝合金电渣重熔锭内裂纹的分析和工艺改进措施[J]. 特殊钢, 2014, 35(1): 40-42 |
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| 作者姓名： | 白李国 李京社 杨树峰 李刚 杨宏博 |
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| 作者单位： | 1北京科技大学冶金与生态工程学院，北京100083；2北京首钢吉安泰新材料有限公司，北京102200 |
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| 基金项目： | 国家自然科学基金资助(51304016) |
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| 摘 要： | 通过工业试验研究了铁铬铝合金(/%:0.024C,0.26Si,0.17Mn,20.1Cr,5.3Al,0.05RE)200 kg电渣重熔结晶器的结构、冷却强度、电压电流、缓冷方式等对内裂纹的影响。结果表明,通过将原结晶器底水箱改为间接水冷装置,提高进水量,将电流、电压分别由原来的5 400 A和55 V降至5 000 A和50 V以降低熔池温度,采用膨胀珍珠岩覆盖剂保温均热等措施,使电渣锭低倍组织致密均匀,无内裂纹。
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| 关 键 词： | 铁铬铝合金,电渣重熔,内裂纹,工艺措施 , |
| 收稿时间： | 2013-09-05 |
Analysis on Internal Cracks in Fe-Cr-Al Alloy Electroslag Remelting Ingot and Improved Process Measure |
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| Bai Liguo,Li Jingshe,Yang Shufeng,Li Gang,Yang Hongbo. Analysis on Internal Cracks in Fe-Cr-Al Alloy Electroslag Remelting Ingot and Improved Process Measure[J]. Special Steel, 2014, 35(1): 40-42 |
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| Authors: | Bai Liguo Li Jingshe Yang Shufeng Li Gang Yang Hongbo |
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| Affiliation: | 1 School of Metallurgical and Ecological Engineering, University of Science and Technology, Beijing 100083 ；2 Beijing Shougang Gitane New Materials Co Ltd, Beijing 102200 |
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| Abstract: | The effect of structure of electroslag remelting (ESR) mold, cooling intensity t voltage, current and slow- cooling method on internal cracks of 200 kg ESR ingot of Fe-Cr-Al alloy (/%: 0. 024C, 0. 26Si, 0. 17Mn, 20.1Cr, 5. 3Al, 0. 05RE) has been studied by pilot-scale production. Results show that with the measures including modifying original mold bottom water box to indirect water-cooling unit, increasing inlet water rate, decreasing voltage and current respectively from original 5 400 A and 55 V to 5 000 A and 50 V to lower bath temperature, and using expanding perlite shielding material for holding and soaking, the macrostructure of ESR ingot is compact and uniform, and there are no internal cracks. |
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