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 ›› 2012, Vol. 33 ›› Issue (5): 32-34.

• 工艺技术 • 上一篇    下一篇

电站锅炉管用钢15CrMoG的生产实践

寄海明   

  1. 攀钢集团攀枝花钢机有限公司科技创新部,攀枝花617000
  • 收稿日期:2012-03-22 出版日期:2012-10-01 发布日期:2022-10-09
  • 作者简介:寄海明(1984-),男,助理工程师,2007年四川大学毕业,特钢新产品开发。

Commercial Production Practice on Steel 15CrMoG for Boiler Tube of Power Station

Ji Haiming   

  1. (Science and Technology Development Department, Panzhihua Steel and Vanadium Co Ltd, Pangang Group, Panzhihua 617000)
  • Received:2012-03-22 Published:2012-10-01 Online:2022-10-09

摘要: 锅炉管用钢15CrMoG(/%:0.12~0.18C、0.17~0.35Si、0.40~0.70Mn、≤0.015P、≤0.010S、0.80~1.10Cr、0.40~0.55Mo、≤0.08V、≤0.020Alt)要求非金属夹杂物的级别C≤1.0、Ds≤1.0。该钢的生产流程为铁水预处理-120 t LD-LF-RH-280 mm×380 mm连铸坯-轧制Φ100~Φ120 mm圆管坯。通过铁水深脱硫、LD终点控制0.03%~0.09%C、0.004%~0.012%P、0.006%~0.015%S,加铝铁2.5 kg/t的低铝脱氧,使用碱度为3~4的精炼渣,使中间包钢水的P含量为0.005%~0.012%,S含量0.005%~0.008%,Al含量为0.004%~0.008%,圆管坯的各项指标均满足用户协议要求。

关键词: 电站, 锅炉管用钢15CrMoG, 磷硫;铝, 生产实践

Abstract: The rating of inclusions in steel 15CrMoG for boiler tube (/%: 0. 12 〜0. 18C, 0. 17 - 0. 35Si, 0. 40 〜0. 70Mn, ≤0.015P, ≤O. 010S, 0. 80 〜1. 10Cr, 0. 40 〜0. 55M。≤0. 08 V, ≤0. 020Alt) is that C series ≤1.0 and Ds series ≤1.0. The production flow sheet of the steel is hot metal pretreatment-120 t LD-LF-RH-280 mm x 380 mm bloom casting-rolling to Φ 100 ~ Φ120 mm round tube blank. With hot metal deepening desulphurization, LD end point controlling 0. 03% - 0. 09% C, 0. 004% -0. 012% P, 0. 006% -0. 015% S, low aluminium deoxidation with adding 2. 5 kg/t aluminium-iron, and using refining slag with basicity 3 ~4, as a result in liquid steel in tundish the P content is 0. 005% ~ 0. 012%, the S content is 0. 005% 〜0. 008% and the aluminium content is 0. 004% 〜0. 008%, and each index of round tube blank all meets the requirement of user terms of agreement.