Effect of solidification of mold fluxes on the heat transfer in casting mold

被引：88

作者：

Cho, JW

Shibata, H

机构：

[1] Pohang Iron & Steel Co Ltd, Kwangyang Iron & Steelmaking Res Grp, Kwangyang 545090, Cheonnam, South Korea

[2] Tohoku Univ, Inst Adv Mat Proc, Aoba Ku, Sendai, Miyagi 98077, Japan

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 2001年 / 282卷 / 01期

关键词：

D O I：

10.1016/S0022-3093(01)00333-7

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 [材料科学与工程]; 080502 [材料学];

摘要：

Crystallization of molten mold flux film has been observed using a confocal scanning laser microscope (CSLM) with an infrared furnace. The observation has indicated that mold flux of larger basicity (CaO/SiO2 = 1.41) starts crystallizing directly in liquid phase at temperatures >1373 K, and shows a faster growth rate of crystalline than that of smaller basicity (CaO/SiO2 = 0.96). Cross-section of solidified fluxes shows that the shrinkage due to the crystallization is more for larger basicity flux than for smaller one. This difference implies that thermal resistance at mold/mold flux film interface arises from the solidification and crystallization of the flux film, (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：110 / 117

页数：8

共 13 条

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[2]

''In-situ'' real time observation of planar to cellular and cellular to dendritic transition of crystals growing in Fe-C alloy melts [J].