Mould Slag

Name: Mould Slag
Diagram No.: 1132
Type of diagram: CCT
Chemical composition in weight %: See the table
Group: Slags
Note: CCT diagrams.
Figure shows typical DSC curves for slags S1 and S2 generated at a constant heating rate of 10 C/min and cooling rate of 1 C/min. The sharp endothermic trough of the heating curves at 100 C is due to water evaporation. Endothermic troughs are also found at ~450 and 750 C in Slag S1 and ~700 to 750 C for Slag S2. These troughs are most likely associated with the decomposition of the two common carbonates found in these mould fluxes: Na2CO3 at 450 C and CaCO3 at 750 C. This is confirmed by the accompanying weight loss of TG (Figure a) which is expected because of the volatilization of CO2. The series of endothermic peaks above 1000 C on the heating curve indicates that the powder began to melt incongruently as the different minerals reached their independent liquidus temperatures. The end of the last peak encountered on heating presumably represents the highest liquidus temperature. This is seen to be 1235 C for slag S1 and 1050 C for slag S2.
During the cooling process, the phase transformations are very different from heating owing to the irreversible chemical reactions that occur during melting. Several exothermic peaks are observed which again indicate phase transformations. Each phase transformation is believed to begin at the inflection point starting each peak during cooling. For slag S1 cooling at 1 C/min , the exothermic peaks begin at 1234, 1160 and 1022 C, respectively which likely correspond to the onset of the three different crystalline phases forming. In general, a higher cooling rate increases the peak height, whereas a lower rate yields a higher resolution. Higher cooling rates delay both the onset and finish of each phase transformation.
Reference: Not shown in this demo version.

Transformation Diagram

Price: 30.00 US $
Buy Online Transformation Diagram

Other Steel Data links
Carbides in Steel
Etchants Database
Hardenability Diagrams of Steels
Macro Defects in Steel
Non-Metallic Inclusions in Steel
Tempering Diagrams of Steels
CCT and TTT Diagram Calculating Service
Transformation Diagrams of Non-Ferrous Alloys

Disclaimer: The information and data presented herein are typical or average values and are not a guarantee of maximum or minimum values. Applications specifically suggested for material described herein are made solely for the purpose of illustration to enable the reader to make his own evaluation and are not intended as warranties, either express or implied, of fitness for these or other puposes. There is no representation that the recipient of this literature will receive updated editions as the become available.

Copyright © 2019 by Steel Data. All Rights Reserved.