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 ›› 2017, Vol. 38 ›› Issue (6): 49-52.

• 工艺技术 • 上一篇    下一篇

Incoloy825合金280mmx325mm电渣重熔坯抽锭工业试验

陈帅超,王新鹏,宁天信,罗利阳,张春林   

  1. 洛阳双瑞特种装备有限公司,洛阳471000
  • 出版日期:2017-12-01 发布日期:2022-07-13
  • 作者简介:陈帅超(1986-),男,硕士(2012年东北大学),工程师,2010年太原科技大学(本科)毕业,特种钢品种开发。
  • 基金资助:
    河南省科技创新项目资助(MK111001)

Commercial Pilot Production of Incoloy825 Alloy ESR 280mmx325mm Withdrawing Bloom

Chen Shuaichao, Wang Xinpeng, Ning Tianxin, Luo Liyang , Zhang Chunlin   

  1. Luoyang Shuangrui Special Equipment Co Ltd, Luoyang 417000
  • Published:2017-12-01 Online:2022-07-13

摘要: 试验了Incoloy825合金电极(/%:0.01C,0.21Si,0.41Mn,0.007S,0.019P,22.33Cr,39.08Ni,3.04Mo,2.14Cu,1.17Ti,0.17Al)由3t中频炉+3tAOD冶炼,并经抽锭电渣重熔成280mm×325 mm坯(/%:0.01C,0.21~0.23Si,0.40Mn,0.005S,0.023~0.024P,22.48~22.50Cr,39.10~39.13Ni,3.05~3.07Mo,2.14~2.15Cu,1.00~1.10Ti,0.15~0.18Al)。试验表明,Incoloy825合金方坯抽锭电渣重熔过程中,由于Ti烧损,渣中TiO2含量不断增加,熔渣的粘度也不断上升,导致钢渣不易分离。通过改进抽锭电渣重熔渣系配比,采用(/%)57CaF2,15CaO,5MgO,15Al2O3,5SiO2,3TiO2渣系以及控制电极熔化速度680kg/h,重熔过程加0.43kg/t铝粒以控制Ti烧损,使Incoloy825合金铸坯表面质量明显改善。

关键词: 耐蚀合金, Incoloy825, 280mmx325mm坯, 抽锭电渣重熔, 表面质量

Abstract: The electrodes of tested Incoloy825 alloy (/%: 0.01C, 0. 21Si, 0.41Mn, 0.007S, 0.019P, 22.33Cr, 39.08Ni, 3.04Mo, 2.14Cu, 1.17Ti, 0.17Al) are melted by 3t medium frequency induction furnace + 3t AOD, and the 280mmx325mm withdrawing blooms (/%: 0.01C, 0.21~0.23Si, 0.40Mn, 0.005S, 0.023~0.024P, 22.48~22.50Cr, 39.10~39.13Ni, 3.05~3.07Mo, 2.14~2.15Cu, 1.00~ 1.10Ti, 0.15~0.18Al) are remelted by ESR process. The test results show that during ESR bloom withdrawing process of Incoloy825 alloy, due to Ti burning loss the TiO2 content in slag increases continuously and the viscosity of slag also uninterrupted increases led to difficult separation of slag and steel. By improving ingredient of slag for withdrawing bloom ESR, using (/%) 57CaF2, 15CaO, 5MgO, 15Al2O3, 5SiO2, 3TiO2 slag series and controlling electrode melting rate 680kg/h and adding aluminium shot 0.43 kg/t in ESR process to control Ti burning loss, the surface quality of casting bloom of Incoloy825 alloy improves obviously.