A Study of the Heat and Fluid Flow in Electroslag Remelting.
Abstract
A laboratory mold and experimental procedure were developed for unidirectional solidification of AISI 4340 low alloy steel by Electroslag Remelting (ESR). Major emphasis was to control solidification structure by developing methods to control and study factors affecting the important thermal variables. The effect of power input, current density, slag depth, and electrode diameter on electrode melting rate, temperature gradient in the liquid, G (sub L), and isotherm velocities, R, were studied and related to structure. Electrode and slag cooling were employed to enable achieving increased G (sub L)/R. Electrode melting rate is the main parameter affecting the important thermal variables. The structure of the ingots was found to be compatible with thermal measurements. Finally, a computer heat flow model was developed to predict metal pool shape and depth, and other important thermal variables for different operating conditions. (Modified author abstract)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1974
- Accession Number
- AD0782228
Entities
People
- M. Basaran
- Merton C. Flemings
- R. Mehrabian
- T. Z. Kattamis
Organizations
- Massachusetts Institute of Technology