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Issue:
ANALYSIS ON THE CAUSE OF SLAB CENTRAL CRACK
Author(s):
Huang Zhong
,
Li Zilin
,
Pei Fengjuan
,
Hou Jianlong
Pages:
19
-
21
Year:
2011
Issue:
5
Journal:
Henan Metallurgy
Keyword:
板坯
;
中间裂纹
;
拉速
;
配水
;
Abstract:
通过现场数据统计和典型工艺试验,分析了安钢210mm和230 mm厚板坯内部中间裂纹产生的主要原因.分析认为,造成安钢板坯内部中间裂纹的主要原因是由于铸坯带液芯矫直,凝固前沿受矫直力作用产生裂纹并沿柱状晶晶界扩展,这也解释了安钢210mm铸坯内部质量好于230mm的主要原因;同时试验表明低拉速和强配水的工艺可以改善铸坯中间裂纹.
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