金属学报  1959, Vol. 4 Issue (1): 16-21

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沸腾钢3中板坯的分层现象

邵象华

鞍山钢铁公司

LAMINATION DEFECTS IN RIMMING STEEL SLABS

SHAO HSIANG-HUA Anshan Iron and Steel Corporation

邵象华. 沸腾钢3中板坯的分层现象[J]. 金属学报, 1959, 4(1): 16-21.
. LAMINATION DEFECTS IN RIMMING STEEL SLABS[J]. Acta Metall Sin, 1959, 4(1): 16-21.

摘要 参考文献 相关文章 Metrics 全文: PDF(1248 KB)   摘要: <正> 从1957年4月起,鞍钢曾在初轧机轧制钢3沸腾钢中板坯时,发现板坯上起鼓包的现象,在生产中叫作“气囊”。气囊的位置都相当于钢锭的头部。仔细的检查证明,在一部份未发现气囊的头部板坯的横断面上,特别是在氧气-乙炔切断的横断面上,也可以看出有分层现象,就是说在板坯厚度的中线附近有或长或短的、形状不规则的缝(图1),宽度大多在1mm以下,但也有较宽的,直到形成明显的气囊。这些缺陷都发生在正常的板坯切 Abstract：An extraordinarily large gas pocket formed during the rolling of a rimming steel slab wasstudied. Results of investigation indicated that the serious lamination defects that often occurredin such slabs were due to the presence in large rimming steel ingots of central cavities that (1) con-tained gases at high pressure, (2) were surrounded by heavily segregated metal, and (3) wereloaded at their surfaces with non-metallic substances. During the rolling operation these cavitiesfailed to weld up. On the contrary, the solid walls dividing neighbouring cavities were pushedopen and, as a result, a large discontinuity remained in the rolled slab. It was found that aftershearing the slab and thus exposing the discontinuity to atmosphere, in most cases such discon-tinuities could weld up during subsequent rolling into plates. Lower tapping temperature and lower pouring temperature (speed) were found effective tolessen lamination rejects. 收稿日期: 1959-01-18      服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 邵象华 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1959/V4/I1/16 [1] 56的附钢锭模设计使用总结,鞍钢中央试验室资料,1957年. [2] S. Marshall, J. Chipman, Trans. ASM, 1942, Vol. 30, No.3, P. 695． [3] H. Schenck, Physikalische Chemie der Eisenhuttenprozesse, Julius Springer, Berlin, 1934, Band II, S. 246． [4] Г. Н. Ойкс, 1955, 191． [5] K. C. McCutcheon, J. Chipman, Trans. AIME, 1938, Vol. 131, Iron and Steel Division, pp. 206--226． [6] А. М. Самарир, 1953, 94． [7] 二炼钢沸腾钢3气囊缺陷第二次生产试验小结,鞍钢中央试验室资料,1957年.( No related articles found! Viewed Full text Abstract Cited   Shared      Discussed