Continuous casting update
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Continuous Casting Update
CHARLES R. TAYLOR
A critical survey of available information on primary and secondary cooling as affecting solidification constants, and their validity in mathematical modeling.A review of the mathematics of reciprocation. Comments on the functionand mode of mold lubrication. The important effects of the above parameters and of liquid metal handlingprocedures on the internal and external quality of strand cast billets and slabs~ THE first continuous casting of a metal would appear to have been done in 1840 by an American, George S e l l e r s , "~ a l m o s t 50 y e a r s b e f o r e B e s s e m e r conducted his trials on steel. The metal was lead and the product was pipe. The commercial adoption of the continuous casting of steel is now over twenty years old, so it took about
dary cooling below the mold, mold lubrication, and mold reciprocation. We will then discuss the quality problems encountered in making slabs and billets as t h e y r e l a t e to t h e s e a n d o t h e r p a r a m e t e r s .
135 years to make the transition! At any rate, it appeared that it would be useful to examine the state of the art as to where we stand and to propose areas where information is needed. We will, of course, only be able to skim the surface of such a massive topic. Adequatetreatment would require a book, not a one hour lecture. So if we overlook a facet of the process which some of you considervital, please bear with the omission. We will discuss primary cooling in the mold, secon-
The factors controlling the formation of the first few millimeters of steel in continuouscasting have been the subject of numerous investigations. A thorough understanding of what goes on in the mold is definitely important in establishing the quality of the product and the reliability of the process. An overall description of what goes on would appear to be deceptively simple. Steel is introduced into the mold, a shell forms and is withdrawn at the same mass rate as it is introduced and the casting process proceeds
The Howe Memorial Lecture was established in 1923 by the Iron and Steel Division, now the Iron and Steel Society, o f AIME. The Lecturer is selected for his outstanding contributions to the science and practice o f iron and steel metallurgy or metallography.
D.Sc. in physical chemistry from the University of Cincinnati in 1941. His many professional activities in the AIME include active participation in the Physical Chemistry of Steelmaking Committee (now Process Technology Committee) from 1942 to date, (Chairman 1950); Chairman of the Iron and Steel Division of The Metallurgical Society of AIME in 1964; Board of Directors ISD1962-66; Board of Directors-The Metallurgical Society- 1966-73; Board of Directors-A1ME 1968-73; President of The Metallurgical Society- 1971-72; McCune'Award-1946-Iron and Steel Division, AIME; ASM Fellow-19749 He is holder of several patents and author of numerous papers; co-author of a Chapter in "Electric Furnace Steelmaking."
CHARLES R. TAYLOR, now retired, delivered this
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