共查询到20条相似文献,搜索用时 15 毫秒
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Yeong-Maw Hwang Te-Fu Hwang Chin-Yu Lin Chien-Wen Su 《The International Journal of Advanced Manufacturing Technology》2014,71(1-4):557-563
During foil or ultrathin strip rolling, elastic deflection variation of the work rolls at the contact surface with the strip causes non-uniform thickness distribution of the product in the width direction, which possibly causes a central wrinkling or an edge fracture on the product. This study developed a four-high prototype rolling mill, comprising two work rolls fabricated from an ultrastrength alloy. This prototype rolling mill was composed of a housing frame set, a roll set, a roll gap adjusting mechanism, and a power transmission system. The finite element analysis was used for determining the frame dimensions and work roll diameters. Several experimental rolling passes of stainless steel strips were conducted using this self-developed prototype rolling mill to achieve a 0.05-mm-thick foil product. 相似文献
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四辊轧机是轧制中厚板的大型关键设备,受到加工、装配和运输等条件的限制,对轧机机座牌坊的修复具有一定的难度。为此介绍轧机机座牌坊底面严重磨损的维修方案,并根据维修方案的技术要求设计专用设备进行维修加工的工艺方法。 相似文献
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Kim Jeong-Hun Kim Jae-Hong Lee Kyung-Hun Moon Young-Hoon Ko Dae-Cheol 《Journal of Mechanical Science and Technology》2020,34(9):3609-3615
Journal of Mechanical Science and Technology - For a shape rolling process of products with a high aspect ratio, its width does not spread sufficiently, frequently resulting in the unfilling... 相似文献
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对热轧板带轧机辊型在线检测技术进行了分析,提出采用光电式传感器构造辊型检测系统,其特点是有较强的抗干扰能力,且结构紧凑,工作可靠.轧辊在线检测与修磨技术可以及时消除各种辊面缺陷,提高产品质量. 相似文献
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带钢平整机是冷轧带钢生产中主要的精整设备,对提高带钢机械性能和表面质量起重要作用,文章介绍了1100mm四辊平整机组APO控制系统的组成部分以及其主要功能的原理与实现。 相似文献
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介绍了轧机厚度控制系统的设计与实现,在LabVIEW平台下实现了基于TCP/IP协议的控制系统网络和控制器的建立。以某铝箔厂1700mm轧机为研究背景提取其数学模型,在一台PC上建立该轧机的动态仿真模型(仿真机),代替现场轧机来验证控制系统。实验表明,通过这种仿真机验证的轧机厚度控制系统,如果将输入输出端口接到现场轧机中就可以完成现场任务。 相似文献
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介绍了轧机厚度控制系统的设计与实现,在LabVIEW平台下实现了基于TCP/IP协议的控制系统网络和控制器的建立.以某铝箔厂1 700 mm轧机为研究背景提取其数学模型,在一台PC上建立该轧机的动态仿真模型(仿真机),代替现场轧机来验证控制系统.实验表明,通过这种仿真机验证的轧机厚度控制系统,如果将输入输出端口接到现场轧机中就可以完成现场任务. 相似文献
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Chang Woo Lee Hyun Kyoo Kang Kee Hyun Shin 《Journal of Mechanical Science and Technology》2006,20(9):1410-1417
The metal processing system usually consists of various components such like motors, work rolls, backup rolls, idle rolls,
sensors, etc. Even a simple fault in a single component in the system may cause a serious damage on the final product. It
is therefore necessary to diagnose the faults of the components to detect and prevent system failure. Especially, the defects
in a work roll are critical to the quality of strip. It is especially difficult to detect faults of a roll by using the existing
frequency analysis method if the speed of the roll is changing. In this study, a new diagnosis method for roll eccentricity
under the roll speed changes was developed. The new method was induced from analyzing the rolling mechanism by using rolling
force models, radius-speed relationship, and measured rolling force, etc. Simulation results by using the field data show
that the proposed method is very useful. 相似文献
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The theoretical framework is developed for a new theory of cold rolling thin metallic foil. Unlike previous theories, the work rolls are allowed to deform to a non-circular profile and finite regions of no-slip between strip and work rolls are allowed to occur in the roll bite. The theory predicts that plastic reduction occurs near entry and near exit of the roll bite, separated by a central region where the strip does not suffer reduction and does not slip relative to the work rolls. As the reduction is decreased to zero the theory reduces to essentially the Johnson and Bentall theory [J. Mech. Phys. Solids 17, 253 (1969)] for the onset of plastic reduction in a strip. At large strip thicknesses and finite reductions the new theory approximates the Bland and Ford theory [Proc. Inst. Mech. Engrs 159, 144 (1948)] of cold rolling. 相似文献
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四辊五连轧机机架间张力控制 总被引:1,自引:0,他引:1
介绍了四辊五连轧机系统组成,机架间张力控制,辊缝式调张和速度式调张,并对四辊五连轧机机架间张力现场运行结果进行分析。对基于模糊自适应PID的张力控制及仿真研究进行了阐述。 相似文献
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冷辗机是对轴承内外圈等环形零件进行辗扩加工的机床设备,在其辗压芯辊的设计中,可以用ANSYS通用有限元分析软件对初步设计结果进行参数化建模,静态、模态分析,寻找设计缺陷及优化设计.提高设计质量及效率.阐述了冷辗加工的基本原理,并详细介绍了芯辊在ANSYS下参数化建模,静态、模态分析及优化设计的一般过程. 相似文献
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A new analysis for cold rolling of thin strip and foil is developed. This model follows the approach of Fleck et al. [8], but relaxes their assumption of a central flat neutral zone. Instead of following their inverse method to obtain the pressure distribution in this neutral zone, an explicit equation for the contact pressure variation is obtained from the sticking condition in this region. This significantly simplifies the solution method, leading to a much more robust algorithm. Moreover the method treats the cases either where the roll retains its circular arc or where there is very significant roll deformation in the same way, greatly simplifying the method of obtaining solutions. This will facilitate the incorporation of other effects such as the friction models currently being developed. Results are in line with the theory of Fleck et al. [8]. The effect of entry and exit tensions on the non-dimensional load and forward slip is investigated. It is found that the effect of equal entry and exit tensions is equivalent to reducing the yield stress of the strip by this tension stress. 相似文献
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金属带轧机控制系统开发 总被引:1,自引:1,他引:0
金属带式无级变速器是一种新型的传动技术.金属带轧机是金属带制造的关键设备.本文采用PLC和工业触摸屏实现了金属带轧机控制系统,金属带轧制精度满足设计要求,可实现金属带的大量生产. 相似文献