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 (2): 40-42.

• 工艺技术 • 上一篇    下一篇

150 t BOF-LF-RH-CC-CR工艺试制石油钻杆连接套用钢SAE4137M

卢秉军,董学涛   

  1. 本钢板材股份有限公司技术中心,本溪 117000
  • 收稿日期:2011-10-31 出版日期:2012-04-01 发布日期:2022-10-14
  • 作者简介:卢秉军(1972-),男,高级工程师,1993年辽宁工学院毕业,特殊钢产品研究和开发

Pilot Production of Steel SAE4137M for Petroleum Drill Pipe Connecting Sleeve by 150 t BOF-LF-RH-CC-CR Process

Lu Bingjun , Dong Xuetao   

  1. Technology Center, Bengang Steel Plates Co Ltd, Benxi 117000
  • Received:2011-10-31 Published:2012-04-01 Online:2022-10-14

摘要: 本钢采用铁水预处理-150t复吹转炉-LF-RH-350 mm × 470 mm连铸、M-EMS-连轧工艺生产φ130~170 mm石油钻杆连接套用钢SAE4137M(/%:0.35~0.38C、0.15~0.35Si、0.85~1.00Mn、≤0.015P、≤0.008S、0.90~1.20Cr、0.28~0.33Mo、≤0.005Ca、≤0.0090N)。通过转炉出钢过程加复合脱氧剂,LF扩散脱氧全程吹氩搅拌,RH"软吹氩",严格控制喂钙线量,控制连铸钢水过热度20~30℃,使钢材中氧含量为(13~15)×10-6,氢含量(0.4~0.5)×10-6,氮含量为(35~44)×10-6,残余钙含量(12~18)×10-6,并保证钢中Al/N≥2,满足石油用钢的要求。

关键词: 150 t BOF-LF-RH-CC流程, 石油钻杆连接套用钢SAE4137M, 试制

Abstract: The Φ130-170 mm bar of steel SAE4137M for petroleum drill pipe connecting sleeve (/% : 0.35-0.38C, 0.15-0.35Si, 0.85-l.00Mn, ≤ 0.015P, ≤ 0.008S, 0.90-1.20Cr, 0.28-0.33Mo,≤ 0.005Ca, ≤ 0.0090N) has been pilot-produced by hot metal pretreatment-150 t top and bottom combined blown converter-LF-RH-350 mm x 470 mm casting with M-EMS-continuous rolling process at Bengang. With adding compound deoxidizer during converter tapping, diffusion deoxidizing with argon stirring in LF refining, soft argon blowing and strict-controlling feeding calcium wire amount in RH refining, and controlling liquid overheating extent within 20-30 ℃ , in steel products the oxygen content is (13-15 ) x 10-6 , hydrogen content (0.4~0.5) x 10-6 , nitrogen content (35-44) x 10-6, residual calcium content ( 12-18) x 10-6 and Al/N is ensured ≥ 2, that all meet the requirement for petroleum steels

Key words: 150 t BOF-LF-RH-CC Flow Sheet, Steel SAE4137M for Petroleum Drill Pipe Connecting Sleeve, Pilot Production