Study on different RH processes to produce pipeline steel-X70

LI Taiquan; BAO Yanping; LIU Jianhua; HAN Lina; SUN Baofang

doi:10.13374/j.issn1001-053x.2007.s1.007

Volume 29 Issue S1

Aug. 2021

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LI Taiquan, BAO Yanping, LIU Jianhua, HAN Lina, SUN Baofang. Study on different RH processes to produce pipeline steel-X70[J]. Chinese Journal of Engineering, 2007, 29(S1): 32-35. doi: 10.13374/j.issn1001-053x.2007.s1.007

Citation:

LI Taiquan, BAO Yanping, LIU Jianhua, HAN Lina, SUN Baofang. Study on different RH processes to produce pipeline steel-X70[J]. Chinese Journal of Engineering, 2007, 29(S1): 32-35. doi: 10.13374/j.issn1001-053x.2007.s1.007

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Study on different RH processes to produce pipeline steel-X70

doi: 10.13374/j.issn1001-053x.2007.s1.007

Metallurgical and Ecological Engineering School, University of Science and Technology Beijing, Beijing 100083, China

Received Date: 2007-02-01
Rev Recd Date: 2007-04-15

Available Online: 2021-08-16

Abstract

Abstract

The comparison of different RH processes was presented including the process condition and metallurgical effect. The characteristic of two different RH-processes was analyzed and how to control the bale-ful element and inclusions in pipeline steel were discussed. The T[O] of LF-RH and RH-LF are 14×10^-6 and 19×10^-6. The micro-inclusion numbers of LF-RH and RH-LF are 2.48/mm² and 2.62/mm². The[N] of LF-RH and RH-LF are 53×10^-6 and 38×10^-6. From these practices, the experience for producing high quality oil-pipe steel in the future was accumulated.
- pipeline steel-X70,
- RH,
- refining,