|
|
|
| NUMERICAL SIMULATION AND EXPERIMENTAL STUDY ON TEMPERATURE FIELD DURING CHEMICAL REAGENT COOLING PROCESS OF HOT ROLLED REBAR |
| WEI Jie, DONG Junhua, KE Wei |
| State Key Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016 |
|
Cite this article:
WEI Jie DONG Junhua KE Wei. NUMERICAL SIMULATION AND EXPERIMENTAL STUDY ON TEMPERATURE FIELD DURING CHEMICAL REAGENT COOLING PROCESS OF HOT ROLLED REBAR. Acta Metall Sin, 2012, 48(1): 115-121.
|
|
|
Abstract The corrosion resistance of water cooled rebar is improved by applying a chemical reagent cooling process on the basis of maintaining the high mechanical property. To provide the reference basis for the on-site application of chemical reagent cooling process, the temperature field of the two-stage cooling process (first stage of chemical reagent of FM cooling and second stage of water cooling) of rebar produced by chemical cooling is simulated using the finite element method. Furthermore, the corrosion resistance of scale formed during the first stage of chemical reagent cooling was evaluated in laboratory. Applying the processing parameters of water cooling in steel mill, the temperature field of one-stage cooling was simulated. Compared with the temperature field of the one-stage cooling, the influence of processing parameters on the temperature field during two-stage cooling is analyzed. The results showed that the smaller heat transfer coefficient is applied to increase the oxidation temperature and improve the quality of the oxide scale in the first stage of FM cooling. In the second stage of water cooling, the cooling curve is very approximate to that of one-stage cooling when the heat transfer coefficient of one-stage cooling is remained. Therefore, the mechanical property of hot-rolled rebar of grade III can be ensured. Furthermore, the first stage of FM cooling process was implemented in lab using the optimizing parameters obtained from finite element analysis. The oxide scale forming using FM cooling is compact. And its corrosion resistance is much better than water-cooled rebar, which proves that it is feasible to improve the corrosion resistance of water-cooled rebar using FM cooling before water cooling.
|
|
Received: 22 July 2011
|
| [1] Pradhan B, Bhattacharjee B. Constr Build Mater, 2011; 25: 2565[2] Shi X M, Ning X, Keith F, Jing G. Constr Build Mater, 2012; 30: 125[3] Zhao M Q, Zhang R Q, Yang Z, Li G J. Anhui Metall, 2003; 4: 23(赵明琦, 张若蔷, 杨峥, 李光俊. 安徽冶金, 2003; 4: 23)[4] Huang W, Zhang L,Wang P, Shu W. Archit Technol, 2010; 41: 242(黄伟, 张丽, 王平, 疏伟. 建筑技术, 2010; 41: 242)[5] Nikolaou J, George D P. Int J Impact Eng, 2005; 31: 1065[6] Li G F, Dong H, Gao W, Zhao Y J. J Iron Steel Res, 1996; 8: 42(李桂芬, 董瀚, 高伟, 赵玉君. 钢铁研究学报, 1996; 8: 42)[7] Sun X W, Huo X D, Liu D L, Kang Y L, Mao X P, Chen G J, Li L Y. J Univ Sci Technol Beijing, 2004; 26: 268(孙贤文, 霍向东, 柳得橹, 康永林, 毛新平, 陈贵江, 李烈军. 北京科技大学学报, 2004; 26: 268)[8] Zakya A I, El–Morsyb A, El–Bitar T. J Mater Process Technol, 2009; 209: 1565[9] Wei J, Dong J H, Han E H, Ke W. Corros Sci Prot Technol, 2009; 21: 468(魏洁, 董俊华, 韩恩厚, 柯伟. 腐蚀科学与防护技术, 2009; 21: 468)[10] Zitrou E, Nikolaou J, Tsakiridis P E, Papadimitriou G D. Constr Build Mater, 2007; 21: 1161[11] Castro P, W´eleva L, Balanc´an M. Constr Build Mater, 1997; 11: 75[12] Novak P, Mala R, Joska L. Cem Concr Res, 2001; 31: 589[13] Zou Y, Wang J, Zheng Y Y. Corros Sci, 2011; 53: 208[14] Wei J, Dong J H, Ke W. Constr Build Mater, 2010; 24: 275[15] Wei J, Dong J H, Ke W. Constr Build Mater, 2011; 25: 1243[16] Chen R Y, Yuen W Y D. Oxid Met, 2001; 56: 89[17] Almusallam A A. Constr Build Mater, 2001; 15: 361[18] P´erez F J, Mart´?nez L, Hierro M P, G´omez C, Portela A L, Pucci G N, Duday D, Lecomte–Beckers J, Greday Y. Corro Sci, 2006; 48: 472[19] Saurabh K, Ananya M, Sudin C, Sanjay C. ISIJ Int, 2004; 44: 1217[20] Cheng M, Hong H P, Peng D, Kang Y L, Jin Y C. J Iron Steel Res, 2008; 20: 18(程满, 洪慧平, 彭聃, 康永林, 金永春. 钢铁研究学报, 2008; 20: 18)[21] Lee Y Y, Choi S, Hodgson P D. Mater Process Technol, 2002; 125: 678[22] Morales R D, Lopez A G, Olivare M. ISIJ Int, 1990; 30: 48[23] Yao S C, Cox T L. Exp Heat Transfer, 2002; 15: 207[24] Zhang G B, Sheng Y, Wei M J, Wu X Z, Wang Y S, Liu Q L. J Heibei Inst Technol, 2002; 24: 32(张国滨, 盛艳, 魏明军, 武学泽, 王彦生, 刘庆禄. 河北理工学院学报, 2002; 24: 32)[25] Freund S, Pautsch A G, Shedd T A, Kabelac S. Int J Heat Mass Transfer, 2007; 50: 1953 |
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
