ISSN:1003-8620

CN:42-1243/TF

主管:中信泰富特钢集团股份有限公司

主办:大冶特殊钢有限公司

特殊钢 ›› 2014, Vol. 35 ›› Issue (1): 40-42.

• 工艺技术 • 上一篇    下一篇

铁铬铝合金电渣重熔锭内裂纹的分析和工艺改进措施

白李国1,李京社1,杨树峰1,李 刚1,2,杨宏博1   

  1. 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
  • 收稿日期:2013-09-05 出版日期:2014-02-01 发布日期:2022-09-06
  • 作者简介:白李国(1984-),男,博士研究生(北京科技大学),2008年河北理工大学(本科)毕业,金属材料的凝固研究。
  • 基金资助:
    国家自然科学基金资助(51304016)

Analysis on Internal Cracks in Fe-Cr-Al Alloy Electroslag Remelting Ingot and Improved Process Measure

Bai Liguo1 , Li Jingshe1 , Yang Shufeng1 , Li Gang1,2 , Yang Hongbo1   

  1. 1 School of Metallurgical and Ecological Engineering, University of Science and Technology, Beijing 100083 ;
    2 Beijing Shougang Gitane New Materials Co Ltd, Beijing 102200
  • Received:2013-09-05 Published:2014-02-01 Online:2022-09-06

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。

关键词: 铁铬铝合金, 电渣重熔, 内裂纹, 工艺措施;

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.