The study focused on the relation between upstream flow velocity and surface longitudinal crack under the condition of blowing gas.
本文针对板坯结晶器内的钢液流动特征进行了物理模拟，重点研究了吹气条件下流场的上循环速度与表面纵裂纹的关系。
The results show that the surface longitudinal crack of hot-roll Q345B medium plate is caused by inclusion and surface longitudinal crack of slab.
结果表明，热轧Q 345 B中厚板表面纵裂纹是由于铸坯中存在夹杂物及铸坯纵裂引起的。
Based on the underground of high efficient CC in Ma 'steel, the longitudinal surface crack and centerline crack, the uppermost defects of beam blank CC production are studied.
针对马钢异型坯高效连铸的背景，分析了异型坯生产中铸坯质量的主要缺陷类型：表面纵裂和中心裂纹。
The stress required for producing internal crack decreases since there are loci of cracks in the slab caused by the surface crack, so the longitudinal cracks from inner to surface form easily.
由于铸坯表面裂纹形成的裂纹灶，降低了产生内裂所需要的应力值，易于形成内、外相连的纵裂。
The crack sensitivity of hypo-peritectic steel, its formation mechanism and factors are discussed, and on the analysis, the reasons and factors on longitudinal surface crack are found out.
本文从亚包晶钢的裂纹敏感性，表面纵裂形成及影响因素等方面进行讨论，初步阐述了亚包晶钢圆坯表面纵裂形成原因及各种因素对表面纵裂的影响。
This paper analyzes the composition of liquid steel on the high - temperature mechanical property of steel and longitudinal surface crack of CSP slab.
从钢水成分影响钢的高温力学性能的角度，研究钢水成分对钢的高温力学性能和CSP薄板坯表面纵裂的影响。
Studied the reason and the countermeasure of longitudinal surface crack of Ma-Steel beam blank.
研究了马钢连铸异型坯表面纵裂纹的成因和对应措施。
For shape of CC beam blank is complex, there are more rate of longitudinal crack on the surface.
连铸异型坯由于其形状复杂，表面纵裂纹发生率较高。
The longitudinal surface crack on thin slab is a serious quality defect at thin slab continuous casting and rolling process.
薄板坯表面纵裂是连铸连轧生产线上的严重质量缺陷。
The longitudinal surface crack on thin slab is a serious quality defect at thin slab continuous casting and rolling process.
薄板坯表面纵裂是连铸连轧生产线上的严重质量缺陷。
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