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本文主要介绍了YORK-2000连轧钢管用钢试炼情况。结果证明,经转炉-精炼-连铸-连轧钢管工艺路线生产的产品,其各项性能及技术指标都达到设计要求。 相似文献
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介绍了第二十九届ISO/SC12连轧钢板国际标准会议情况,阐述作者的体会,提出建议. 相似文献
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结合小型连轧机连续化的发展趋势。为使在小型轧机装备结构改造和控制上适应对连轧的基本要求做了一些研究和探讨。根据轧钢理论通过一系列的公式推导和演算,找出小型连轧生产中产生拉钢和堆钢原因,论证了小型连轧机连轧张力确定拉钢值及活套式连轧合理堆钢值的充要条件,即:小型连轧机在拉钢轧制时最佳的拉钢系数λ区间的(1,λmax)最大堆钢系数λmax的有效区间为(λ.1)。此两个参数对轧钢生产轧钢设备选型和电气控制的设计有一定的参考意义。 相似文献
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在乌拉尔钢铁公司电炉炼钢车间,主要生产工艺设备有:电炉一钢包炉一德马克板坯连铸机。主要生产钢种有对裂纹敏感的管线钢和用于生产厚板的钢,包括10—15XCHд。采用外购废钢冶炼,然后钢水连铸成板坯料。此外,大部分板坯不需要检查和表面处理而直送轧钢车间。 相似文献
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本文简单介绍了薄板坯连铸连轧钢卷库计算机管理系统的配置、功能,以及实现产品工艺质量的自动跟踪。 相似文献
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研究了连续圆管坯轧管中的铸坯质量、轧制工艺和压缩比等三个主要问题,在此基础上,介绍了国外钢管连铸连轧和近终形技术的发展概况,并对发展我国的钢管连铸连轧技术进行了讨论。 相似文献
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有限元数值模拟在无缝钢管连轧技术中的应用 总被引:1,自引:0,他引:1
介绍了国内外对钢管连轧变形区的理论分析和实验研究,重点介绍了有限元方法在钢管连轧过程的模拟分析及其应用,为实际生产中制定合理的工艺参数和优化孔型设计提供科学依据。 相似文献
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《Baosteel Technical Research》2010,(Z1):66
According to the characteristics of PQF continuous rolling pass,the relationship between spread coefficient,wall thickness coefficient and elongation are analyzed.The section shape of tube in each stand outlet,the efficient working radius and the rotational speed of each roll are obtained,therefore,the pass parametric design is completed.A thermal-mechanical coupled model of continuous rolling tube’ s forming process is established by the three-dimensional elasto-plastic finite element method,the section shape and area of tube in each stand outlet are forecasted,which is used to modify the pass.The rolling force of each roller is predict too,which provides a guidance for pass design.In addition,a visual software of PQF pass parametric design system on heavy calibre seamless tube is generated with Visual Basic.The forming dimension of tube and the rolling force of each roller are successfully obtained,by simulating the forming process of a certain series heavy calibre seamless tube.This system posses practical utilization value.By using this system,the development cycle of new product can be shortened,the reliability of pass design can be improved,and the energy consumption of rolling mill and production cost can be decreased. 相似文献
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介绍了连轧管机组和Accu-Roll轧管机组的发展概况和优缺点,结果得出,连轧管机组大多数指标优于Accu-Roll轧管机组。 相似文献
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In the process of steel tube production, continuous tube rolling is the foremost forming procedure and the critical step that decides the dimension precision and the surface quality. In the actual production of the 140 mm full floating mandrel mill in Steel Tube Branch in Baosteel, steel T91 was chosen to be the typical sample, self made rolling force transducer and mandrel velocity testing equipment were used, and a series of comprehensive tests on rolling parameters including the rolling force and mandrel velocity were carried out. After the experiment, the friction state between rolling tube and mandrel was analyzed. The friction coefficient was calculated and the values of 0033-0074 in each mill were obtained. The friction coefficient increases obviously along the rolling direction. 相似文献
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从1978年第一个限动芯棒连轧管厂在Bergamo投产算起,限动芯棒连轧管工艺已经历了17年的发展过程。评述了这种工艺在80年代的发展及其技术现状。指出当前的无缝钢管生产的重组和这种工艺有关。 相似文献