二冷空排蒸气是连铸车间通风的重要内容。
The vapour exhaust of the caster chamber is an important item of ventilation requirements of continuous casting shop.
为进一步优化攀钢二冷配水制度奠定了基础。
The research results have lain a foundation for further optimizing Pangang's slab continuous caster's secondary cooling system.
在连铸生产过程中，二冷段是影响铸坯质量的重要环节。
In continuous casting process, secondary cooling zone (SCZ) has significant influence on slab quality.
通常制定和优化二冷制度的数学模型基础是有效导热凝固模型。
Traditionally, the mathematical model for the specifications and optimization of spray cooling in continuous casting of steel is based on the effective conductivity model.
结果表明，目前的二冷制度不甚合理，易产生内裂纹等质量缺陷。
The result reveals that the practical secondary cooling system is not suitable and easy to cause quality defects such as internal crack.
同时，对原有二冷制度进行了评估，提出了合理的二冷改进措施。
At the same time, the existing secondary cooling system was evaluated, and the reasonable secondary cooling technology was put forward.
钢水过热度、拉速和二冷制度是影响铸坯内部质量的重要工艺参数。
The steel liquid superheat, velocity and rule of secondary cooling are important process parameters influence on billet internal quality.
动态二冷与动态轻压下是现代连铸工艺提高铸坯质量的一项重要技术。
Dynamic secondary cooling and soft reduction are effective technologies for the improvement of strand quality in continuous slab casting.
本文介绍一个连铸二冷区铸坯表面温度测量系统的测量方法和实际应用情况。
The application and measuring method of a slab surface temperature measuring system for secondary cooling zone of continuous casting are introduced.
提出了从钢水成分、二冷配水、驱动压力、轻压下、支撑段等方面的改进措施。
The measures to reduce the triangular area cracks were put forward including steel content, secondary cooling water, drive pressure, soft reduction and support segments.
提出了一种基于带有变异算子的改进粒子群算法对二冷区水量进行优化的新方法。
A novel method based on modified particle swarm optimization (IPSO) with mutation algorithm was proposed to optimize water quantity in secondary cooling process in the continuous slab casting.
制定了二冷配水制度优化原则，基于目标温度控制原则开发出二冷配水控制模型。
The principle for optimization of secondary cooling is determined and on the basis of the object surface temperature control principle a secondary cooling control model is established.
回归分析表明偏析指数与二冷比水量的相关性最大，而与钢水过热度的相关性不强。
Regressive analysis shows segregation index has maximal relationship with water ratio in secondary cooling, and has low relationship with superheat degree of steel.
通过二冷工艺的优化，提高了二次冷却的均匀性，铸坯表面和内部质量大幅度提高。
Through the optimization of second cooling technology, the uniformity of the secondary cooling is improved, and the surface quality and the internal quality of beam blank are greatly improved.
液芯压下应该在结晶器出口处及二冷区扇形段开始部分进行，这样能减小铸坯的应变。
It was considered that the reduction should be performed in the mould exit and the upper strand segment to decrease the strand stress.
工作时，拉矫机必须克服拉坯过程中结晶器内的摩擦力、二冷装置阻力、矫直阻力等。
In the casting process, the withdrawal straightener has to overcome the friction force from the crystallizer and resistance from the secondary cooling device.
本文介绍国内最新开发的大方坯连铸动态二冷与动态轻压下控制模型及其工业应用效果。
The newly developed dynamic secondary cooling and dynamic soft reduction control model for bloom caster has been introduced along with its industry application.
为进一步研究二冷传热机理和设计合理二冷工艺制度以及喷嘴最佳布置方式打下了基础。
The research results laid a foundation for further optimizing secondary cooling system and arranging form of nozzles.
以小方坯二维非稳态传热模型为工具，分析过热度和二冷配水制度对连铸坯内部质量的影响。
A two - dimension unsteady heat transfer model has been used to analyse the influence of superheat and secondary cooling water distribution on the internal quality of billet.
研究了不同拉速、过热度及二冷比水量对铸坯表面中心和角部温度及铸坯凝固终点位置的影响。
The effects of different casting speeds, degree of superheat and secondary cooling to the central and Angle part temperatures and the final solidification point have been studied.
依据二冷均匀冷却的思想，重新设计并优化了二冷喷淋结构和喷嘴的布置，增加了一个二冷喷淋段。
According to the idea of uniform cooling in secondary cooling zone, the spraying cooling structure and the disposal of nozzles are redesigned and optimized, and one spraying cooling zone is increased.
宽板坯连铸设计的关键在于结晶器内的注流状况，结晶器、铸坯导向段的支撑和二冷喷淋的设计以及连铸自动化。
Critical areas of wide slab caster design will be examined including mould steel flow conditions, mould design, strand guide support design, secondary spray cooling design and caster automation.
文章分析了包钢连铸机二冷室喷淋的现状，并针对目前存在的问题提出了改进措施，解决了二冷喷嘴堵塞的问题。
The condition of CC secondary spraying system at Baotou Steel is analyzed and improvement measures for problems solving and nozzle clogging are raised.
研究表明，薄板坯的二冷强度大，凝固速度快，组织细小、均匀，其内部溶质元素的偏析程度远低于传统连铸板坯。
It shows that thin slab continuous casting has a greater secondary cooling intensity, a faster solidifying rate, a fine and uniform structure and less segregation than conventional slab casting.
简述了攀钢大方坯连铸结晶器电磁搅拌技术、二冷控制技术和凝固末端动态轻压下技术在重轨钢连铸中的应用效果。
The key technologies, such as M-EMS, secondary cooling scheme, and dynamic soft reduction, and its application to bloom continuous casting for heavy rail steel were presented.
简述了攀钢大方坯连铸结晶器电磁搅拌技术、二冷控制技术和凝固末端动态轻压下技术在重轨钢连铸中的应用效果。
The key technologies, such as M-EMS, secondary cooling scheme, dynamic soft reduction, and its application to bloom continuous casting for heavy rail steel were presented.
并根据连铸机现状水平，采取优化辊缝收缩方案、加强二冷系统和扇形段的管理，使得高强船板断口合格率稳定在97%左右。
The rate of nomal fracture is keeped about 97% by optimizing roll gap shrinkage and strengthening management of second cooling and Fan-paragraph, according to now level of casting machine.
由冶金准则及设备约束条件设计优化算法的价值函数，用改进粒子群优化算法以价值函数值最小化为目标，对二冷区各段的水量进行优化。
Value function consists of metallurgical criteria and equipment constraints, the IPSO algorithm applies for optimal of the secondary cooling system aiming at minimize value function.
第二个实验遵循类似的方式，只是不同的是要求参与者们评价一个热疗垫或冷疗垫，然后再选择他们应得的酬报。
A second experiment followed a similar pattern except participants were asked to rate a hot or iced therapeutic pad, and then to choose a reward for their time.
第二个实验遵循类似的方式，只是不同的是要求参与者们评价一个热疗垫或冷疗垫，然后再选择他们应得的酬报。
A second experiment followed a similar pattern except participants were asked to rate a hot or iced therapeutic pad, and then to choose a reward for their time.
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