2) surface transverse crack
表面横裂
1.
Practice of controlling the surface transverse crack of high-strength Niobium bearing steel for continuous casting slab
控制高强度含铌连铸板坯表面横裂的生产实践
3) surface transverse crack
表面横裂纹
1.
The surface transverse cracks on AISI304 strip produced by twin-roll strip casting were studied using optical microscopic observation and colored metallographic analysis,with consideration of the near rapid solidification characteristics of strip casting.
采用化学侵蚀和彩色金相等手段,对双辊薄带连铸304不锈钢铸带表面横裂纹的成因进行了研究,并结合双辊薄带连铸亚快速凝固的特点,对薄带表面横裂纹形成的原因进行了综合分析后认为,铸带表面横裂纹均为凝固时产生的高温热裂纹,熔池的液面波动、冷钢和铸辊的表面缺陷等因素导致的铸带表层凝固速度不一致是产生表面横裂纹的根本原因,而在随后的冷却和卷曲过程中,铸带受到各种形式的拉应力则是表面横裂纹得以扩展和加深的主要原因。
2.
The strengthening mechanism of low-alloy high strength steel and the cause of slab surface transverse crack formation were analyzed,the reasonable measures were adopted and AH60 quality slabs were produced,and afterwards AH60 plate was produced successfully.
分析了板坯表面横裂纹产生的原因及低合金高强度钢的强化机理,采用合理的工艺优化措施生产出无缺陷铸坯,特别是在控轧控冷前提下,利用细晶强化和相变强化,并结合缓冷工艺实现微合金的后期析出强化,成功开发出AH60微合金高强度钢板,达到设计强度要求。
3.
With the actual production,generated reason of surface transverse crack,slit and argon blister of wide slab have been analyzed.
结合实际生产,对宽厚板坯表面横裂纹、纵裂纹、氩气泡疤产生的原因进行了机理性分析。
4) breaking cross section
坡裂横断面
5) surface longitudinal and traversal cracks
表面纵裂和横裂
6) corner and transverse crack
表面角部横裂纹
1.
This paper analyzes reasons to form corner and transverse crack on the surface of 150?mm CC billet based on Anyang Steel's production practice.
结合安钢150mm连铸小方坯表面角部横裂纹攻关的实践分析其成因,提出了改进措施,实施后取得了良好的效果。
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