Temperature Revolution During Feeding Process in ESR of 1Mn18Cr18N

doi:10.12068/j.issn.1005-3026.2015.11.015

Abstract

Abstract: The temperature field at quasi steady state of electro slag remelting (ESR) was taken as initial condition in the simulation of temperature distribution during ESR in virtue of ANSYS and CFX. Terminal positions of hot spots in the ingot under three feeding conditions (i.e. no feeding， linear current-drop and stair-step current-drop during feeding) were investigated. The results showed that the largest distance of mushy zone around the hot spot were 162mm， 130mm and 70mm away from slag-metal interface， when no feeding， linear current-drop and rapid stair-step current-drop were carried out during ESR feeding process， respectively. The hot spot remained changeless under slow stair-step current-drop. Thus， stair-step current-drop is beneficial for feeding process during ESR of 1Mn18Cr18N.

Key words: ESR(electro slag remelting), 1Mn18Cr18N retaining ring steel, feeding, temperature field, numerical simulation

CLC Number:

TF142

ZHU Hong-chun， JIANG Zhou-hua， LI Hua-bing， LI Ke-bin. Temperature Revolution During Feeding Process in ESR of 1Mn18Cr18N[J]. Journal of Northeastern University Natural Science, 2015, 36(11): 1586-1590.

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