Abstract
A new-generation TMCP(NG-TMCP) with ultra fast cooling(UFC) as core technique was suggested instead of the conventional TMCP in which some problems are to be solved. And the ultra fast cooling technology has been successfully applied to the plate rolling production in Shouqin Metal Materials Co. Ltd. Industrial trials are reported for the production of X70 pipeline steels (about 70000 t) under UFC conditions. Pipeline steels with reasonably good properties have been produced on an industrial scale. UFC can improve the temperature uniformity, the mechanical properties and the plate profile of X70 pipeline steel. The performance features of the trial plates can meet the standard of X70 pipeline steel. Spot test results have shown that the qualification rate of shape control, the performance and charpy impact properties for the trial plates are 95%, 97% and 98%, respectively. The impact values of X70 pipeline steel at UFC mode exceed the standard requirements of X80 pipeline steel. The productivity is enhanced because cutting quantity of head and tail of the plate is reduced. The enhancement of control accuracy of the red back temperatures is favorable for industrial production of X70 pipeline steel. The reduced production of the steel-making has been industrially achieved, since a new composition was designed by reducing the vanadium content to less than 0.045 wt.%.
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References
Nayak S S, Misra R D K, Hartmann J, et al. Microstructure and properties of low manganese and niobium containing HIC pipeline steel. Mat Sci Eng A, 2008, 494(1–2): 456–463
Zhao J, Li J, Qu X Y, et al. Study on intelligent control technology for forming steel pipe of pipeline with JCO process. Sci China Tech Sci, 2011, 54: 2754–2759
Seung Y H, Sang Y S, Sunghak L, et al. Effects of cooling conditions on tensile and charpy impact properties of API X80 linepipe steels. Met Mat Trans A, 2010, 41A(2): 329–340
Ricker R E. Analysis of pipeline steel corrosion data from NBS (NIST) studies conducted between 1922-1940 and relevance to pipeline management. J Res Natl Inst Stds Tech, 2010, 115(5): 373–3
Yan P, Güngor O E, Thibaux P, et al. Crystallographic texture of induction-welded and heat-treated pipeline steel. Adv Mat Res, 2010, (89–91): 651–656
Zheng L, Gao S. Research and trial production of X80 pipeline steel with high toughness using acicular ferrite. Eng Sci, 2005, 3(3): 91–94
Matrosov M Y, Éfron L I, Il’inskii V I, et al. Use of accelerated cooling to improve the mechanical and processing properties of rolled plates used to make large-diameter gas-line pipe. Metallurgist, 2005, 49(5–6): 220–229
Schambron T, Phillips A W, O’brien D M, et al. Thermomechanical processing of pipeline steels with a reduced Mn content. ISIJ Int, 2009, 49(2): 284–292
Wang G D. New generation TMCP and innovative hot rolling process. J Neu (Nat Sci), 2009, 30(7): 913–922
Mendoza R, Alanis M, Perez R, et al. On the processing of Fe-C-Mn-Nb steels to produce plates for pipelines with sour gas resistance. Mat Sci Eng A, 2002, 337(1–2): 115–120
Calvo J, Jung I H, Elwazri A M, et al. Influence of the chemical composition on transformation behaviour of low carbon microalloyed steels. Mat Sci Eng A, 2009, 520(1–2): 90–96
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Tian, Y., Tang, S., Wang, B. et al. Development and industrial application of ultra-fast cooling technology. Sci. China Technol. Sci. 55, 1566–1571 (2012). https://doi.org/10.1007/s11431-012-4744-6
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DOI: https://doi.org/10.1007/s11431-012-4744-6