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 ›› 2011, Vol. 32 ›› Issue (4): 57-59.

• 组织和性能 • 上一篇    下一篇

Si含量对超超临界汽轮机转子钢30Cr2Ni4MoV组织和性能的影响

范倚, 范新有, 李士琦, 韩建军, 刘超   

  1. 1北京科技大学冶金与生态工程学院,北京100083;
    2新兴铸管有限公司,武安056300
  • 收稿日期:2011-01-23 出版日期:2011-08-01 发布日期:2022-11-03
  • 作者简介:范 倚( 1988-),男,博士生,钢铁冶金研究。

Effect of Si Content on Structure and Mechanical Properties of Ultra Supercritical Steam Turbine Rotor Steel 30Cr2Ni4MoV

Fan Yi1, Fan Xinyou2, Li Shiqi1, Han Jianjun1 ,Liu Chao1   

  1. 1 School of Metallurgical and Ecological Engineering, University of Science and Technology, Beijing 100083 ;
    2 Xinxing Ductile Iron Pipe Co Ltd, Wu'an 056300
  • Received:2011-01-23 Published:2011-08-01 Online:2022-11-03

摘要: 30Cr2Ni4MoV钢(%:0.15~0.16C、0.03~0.45Si、0.12~0.14Mn、0.005P、0.005~0.006S、1.62~1.72Cr、3.60~3.63Ni、0.52~0.53Mo、0.07V、≤0.005A1)由10kg真空感应炉冶炼,锻后经930℃空冷+900℃空冷+640℃空冷处理,再经850℃水淬+600℃回火调质处理。试验结果表明,当钢中的Si含量由0.03%增加至0.45%时,钢中马氏体量增加,晶粒更为粗大;钢的抗拉和屈服强度分别从922~936 MPa和868~873 MPa增至1015~1028 MPa和950~959 MPa,但平均冲击功由205 J降至154 J。

关键词: 超超临界汽轮机转子钢30Cr2Ni4MoV,  , Si含量, 组织, 力学性能

Abstract: Steel 30Cr2Ni4MoV (% : 0. 15 ~ 0. 16C, 0. 03 〜0.45Si, 0. 12 〜0. 14Mn, 0. 005 P, 0. 005 〜0.006S, 1. 62 ~ 1. 72Cr, 3. 60 〜3. 63Ni, 0. 52 〜0. 53Mo, 0. 07V, ≤0.005Al) is melted by a 10 kg vacuum induction furnace, forged bar treaded at 930 °C air cooling + 900 °C air cooling +640 °C air cooling, then water quenched at 850 ℃ following tempered at 600 ℃. Examination results show that as the Si content in steel increases from 0. 03% to 0. 45%, the amount of martensite in steel increases and the grains become coarser ; and the tensile and yield strength of steel increase respectively from 922 〜936 MPa and 868 〜873 MPa to 1 015 〜1 028 MPa and 950 〜959 MPa, while the average impact energy of steel decreases from 205 J to 154 J.

Key words:  , Ultra Supercritical Steam Turbine Rotor Steel 30Cr2Ni4MoV, Si Content, Structure, Mechanical Properties