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。
The results show that the surface longitudinal crack of hot-roll Q345B medium plate is caused by inclusion and surface longitudinal crack of slab.
对生产数据进行分析，认为钢水成分、拉速和结晶器液面波动等是造成连铸坯表面纵裂的主要原因。
The composition of molten steel, cast speed and mould level changing are thought to be main reasons of causing surface longitudinal cracks by analyzing producing data.
对方坯重轨钢系列铸坯内部产生的中间裂、中心裂等缺陷进行工艺探索研究，以解决生产过程中出现的内部质量问题。
This paper mainly analyzes the process of bloom casting for heavy rail and internal cracks like central crack and so on in order to solve the internal quality problems.
连铸板坯表面纵裂起因于结晶器弯月面初生凝固坯壳厚度的不均匀性。
The longitudinal surface cracks of continuous cast slab results from the thickness inhomogeneity of the initially solidified shell at the meniscus of mould.
经过几个月的实验，小方坯角部纵裂废品基本消失，取得了良好的冶金效果。
The longitudinal corner crack scrap of Billets disappeared almostly after four and half months test. Yielded the good metallurgical results.
简析了石钢电炉炼钢厂矩型坯内裂产生的原因，并提出了相应改造措施。
The reason for inner crack in rectangular billet is analyzed and some measures to improve presented.
对承钢小方坯角裂产生的原因进行了剖析，并制订出相应的措施以减少裂纹。
The cause for Angle crack on small billet in Chengde Iron and Steel Company is analyzed, the measures to prevent it worked out.
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。
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.
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。
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.
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 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.
结果表明：漏斗型结晶器的开口度和漏斗曲线对纵裂的形成有重要影响，漏斗曲线的优化与铸坯出口厚度有关。
The results show that the openness and shape of funnel mold are critical for formation of longitudinal cracking. The optimized funnel shape has relation to the slab thickness.
角部横向裂纹(简称角部横裂)是连铸板坯较严重的表面缺陷之一，其对铸坯的生产和质量影响很大。
Transverse corner crack is one of the most serious problems in continuous cast slab. With a great number of cracks the slab will witness serious defects and practical operation is badly influenced.
角部横向裂纹(简称角部横裂)是连铸板坯较严重的表面缺陷之一，其对铸坯的生产和质量影响很大。
Transverse corner crack is one of the most serious problems in continuous cast slab. With a great number of cracks the slab will witness serious defects and practical operation is badly influenced.
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