Analysis of Internal Defects Appeared in the Continuous Casting

Open access

Abstract

The paper presents the study of internal defects resulting from the continuous casting of steels. The 50 samples were taken from a total of 20 continuously cast bits of different steel grades. The investigation of the causes of internal defects, shown on the analyzed samples, started from the assumption that the secondary metallurgy was performed correctly. The following internal defects have been evident: internal cracks (axial cracks, section cracks), central porosity and marginal punctuation impurities.

If the inline PDF is not rendering correctly, you can download the PDF file here.

  • [1] O. Florea s.a. Teoria Proceselor Metalurgice Ediţia a-2-a Editura Didactică şi Pedagogică Bucureşti 1984.

  • [2] C.O. Rusănescu M. Rusănescu F.V. Anghelina V Bratu The influence of the micro-alloying elements on physical and structural characteristics of the some steel destined for manufacturing the oil pipes Romanian Reports in Physics Vol.68no.1 278-293 2016

  • [3] J. H. Chesters Refractories for iron & steelmaking The Metals Society London 1974 pp. 406-407.

  • [4] V. Bratu Metode experimentale şi procedee privind îmbunătăţirea calităţii semifabricatelor turnate continuu Editura Ştiinţifică F.M.R. Bucureşti 2003.

  • [5] C.O. Rusănescu M.Rusănescu Traian Iordanescu V. Anghelina Mathematical relation ships between alloying elements and technological deformability indexes Journal of optoelectronics and advanced materials Vol.15 No.7- 8 718-723 2013.

  • [6] E. Popa T. Heput E. Ardelean A. Socalici Identifying the main defects appeared in the structure of continuous blanks International journal of systems applications engineering & development Issue 1 Volume 6 2012.

  • [7] N. Oargă T. Heput E. Ardelean E. Popa Study on internal defects continuously cast blanks Annals of Faculty of Engineering from Hunedoara tom III fasc.1 2001.

  • [8] E. Ardelean M. Ardelean A. Socalici T. Heput Simulation of continuous cast steel product solidificationRev. Metal.Madrid 43 181- 187 2007.

  • [9] V. Bratu I.N. Popescu The Mathematical Model Applied to Solidify and Segregation of Ledeburite Tool Steel Ingots Scientific Bulletin of Valahia University-Materials and Mechanics 15 (12) 28-31 2017.

  • [10] V.Vrabie C.Bratu I.Chira Tehnologia Elaborării şi Turnării Oţelului Editura Didactică şi Pedagogică Bucureşti 1979.

  • [11] S.Mckay N.S. Hunter A.S. Normanton V.Ludlow P.N. Hewitt B.Harris Powder evaluation for continuous casting Ironmaking and Steelmaking 2002 vol. 29 Nr. 3 p. 189.

  • [12] K. Kim H. N. Han T. Yeo Y. Lee K. H. Oh D. N. Lee Analysis of surface and internal cracks in continuously cast beam blank Ironmaking and Steelmaking 1991 Vol. 24 NO. 3 p.249

  • [13] Y. Tanizawa Factors of decarburation in continuous casting of ulc steels and the remedies. Camp Isij vol. 4 1991 p. 257.

  • [14] Ghe. Ioniţă E.V.Stoian Heat flow in solidification Buletinul Universităţii Petrol-Gaze din PloieştiISSN 1224-8495 87-92 2006.

  • [15] K.Koyama Y.Nagano K.Nagano T.Nagano Physicochemical properties of powders used for continuous casting N.S.T.R. nr. 34 July 1987.

  • [16] Yu X. Pomfret R. J. Coley K. S. Dissolving alumina in the crystalliser powder Metallurgical and Materials Transaction B vol. 28 1997.

Search
Journal information
Metrics
All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 293 148 5
PDF Downloads 135 79 6