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 (5): 23-25.

• 试验研究 • 上一篇    下一篇

14Cr-13Co-5Mo-2Ni齿轮钢真空自耗熔炼过程的数值模拟

程爱民,马昱,高向宙,李京社,杨树峰,白李国   

  1. 北京科技大学冶金与生态工程学院,北京 100083
  • 收稿日期:2014-04-29 出版日期:2014-10-01 发布日期:2022-09-01
  • 作者简介:程爱民(1969-),男,博士(北京科技大学),1991年河北联合大学(本科)毕业,特殊钢冶炼工艺研究。
  • 基金资助:
    国家自然科学基金资助项目(No51374016)

Numerical Simulation on Consumable-Electrode Vacuum Melting Process for 14Cr-13Co-5Mo-2Ni Gear Steel

Cheng Aimin , Ma Yu , Gao Xiangzhou , Li Jingshe , Yang Shufeng , Bai Ligou   

  1. School of Metallurgical and Ecological Engineering, University of Science and Technology, Beijing 100083
  • Received:2014-04-29 Published:2014-10-01 Online:2022-09-01

摘要: 建立了14Cr-13Co-5Mo-2Ni齿轮钢(/%:0.014C,0.26Si,0.17Mn,13.79Cr,12.69Co,4.66Mo,2.00Ni,0.53Al)直径290 mm 9 t锭真空自耗熔炼过程三维数学模型,研究冷却水压、电流和熔化速率对自耗锭凝固组织分布及晶粒大小的影响。研究结果表明,当冷却水压由6000 MPa增加到8000 MPa,电流由6.2500 kA减小至6.2286kA,熔化速率由1.250 kg/s降低至1.125 kg/s后,冶炼的自耗锭内部等轴晶区域增大将近1倍,晶粒数目提高了45.17%,晶粒平均半径减小了17%,最大二次枝晶间距减小了4.88%,基本达到晶粒细化,合金元素分布均匀化的目的。

关键词: 14Cr-13Co-5Mo-2Ni齿轮钢, 真空自耗, 工艺参数, 数值模拟

Abstract: A three-dimensional mathematical model for consumable-electrode vacuum melting process of 14Cr-13Co- 5Mo-2Ni gear steei (/% : 0.014C, 0.26Si, 0.17Mn, 13.79Cr, 12.69Co, 4.66Mo, 2.00Ni, 0.53Al) diameter 290 mm, 9 t ingot has been established to study the effect of cooling water pressure, electric current and smelting rate on distribution of solidified structure and grain size of consumable-electrode vacuum melting ingot. Research results show that as the cooling water pressure increases from 6000 MPa to 8000 MPa, the current and smelting rate respectively decrease from 6.2500 kA and 1.250 kg/s to 6.228 6 kA and 1.125 kg/s, the equiaxed zone in melted ingot increases nearly by one fold, amount of grain increases by 45.17% , average grain size decreases by 17% and max spacing between secondary dendritic arms decreases by 4.88% , basically to achieve the object of grain fining and uniform distribution of alloying elements in steel.

Key words: 14Cr-13Co-5Mo-2Ni Gear Steel, Consumable-Electrode Vacuum Melting, Process Parameters, Numerical Simulation