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 41...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 4140 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 0. 033 - 0. 074 in each mill were obtained. The friction coefficient increases obviously along the rolling direction.展开更多
应用三维有限元模拟仿真技术,对Φ169 mm×6 mm T91无缝钢管8机架浮动芯棒连轧管过程,进行有限元模拟与仿真分析,获得各机架横断面等效应力分布以及轧制力、芯棒力和力距的变化特点。提出增加前3机架轧制力,降低第4机架轧制负荷,使...应用三维有限元模拟仿真技术,对Φ169 mm×6 mm T91无缝钢管8机架浮动芯棒连轧管过程,进行有限元模拟与仿真分析,获得各机架横断面等效应力分布以及轧制力、芯棒力和力距的变化特点。提出增加前3机架轧制力,降低第4机架轧制负荷,使连轧管过程轧制力参数合理分布。展开更多
文摘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 4140 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 0. 033 - 0. 074 in each mill were obtained. The friction coefficient increases obviously along the rolling direction.
