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101.
由于嵌入式工业控制器处理能力有限,在原有共享内存的基础上,引入了映射存储器技术,使得系统性能有了极大地提高,满足了热连轧机组对控制系统的响应速度和控制精度要求。酒钢薄板坯连铸连轧(CSP)精轧机组控制系统采用了共享内存技术和映射存储器技术相结合的模式,响应速度快、控制精度高,为生产出高质量的热轧带钢奠定了坚实的基础。 相似文献
102.
HU Xian-lei ZHAO Zhong WANG Jun WANG Zhao-dong LIU Xiang-hua WANG Guo-dong 《钢铁研究学报(英文版)》2006,13(3):21-25
Holding temperature and holding thickness are main parameters for two-phase controlled rolling on plate mill. The optimization of holding temperature and holding thickness for pass schedule calculation of two-phase controlled rolling on plate mill was presented and its feature is as follows： （1） Determination of holding thickness can be automatically obtained based on the influence of mill safety limits, tracking zone length and holding time on holding thickness; （2） Determination of holding temperature can be automatically obtained and the holding time can be reduced as much as possible; （3） Algorithm can modify the holding temperature and thickness depending on slab size and product size. 相似文献
103.
Three passes of plate rolling during vertical-horizontal rolling process are simulated with explicit dynamic finite element method and updating geometric method. The equivalent strain and stress fields, and shape change at the head and tail of slab during rolling are obtained. The calculated result of the shape at the head and tail of slab is in good agreement with the measured one. The explicit dynamic finite element method and updating geometric method can be used effectively to analyze the multipass vertical-horizontal （V-H） rolling process. 相似文献
104.
105.
The design of rolling element bearings has been a challenging task in the field of mechanical engineering. While most of the real aspects of the design are never disclosed by bearing manufacturers, the common engineer is left with no other alternative than to refer to standard tables and charts containing the bearing performance characteristics. This paper presents a more viable method to solve this problem using genetic algorithms (GAs). Since the algorithm is basically a guided random search, it weakens the chances of getting trapped in local maxima or minima. The method used has yielded improved performance parameters than those catalogued in standard tables. 相似文献
106.
R. Neugebauer T. Lampke D. Dietrich M. Bergmann 《Materialwissenschaft und Werkstofftechnik》2010,41(6):407-412
107.
108.
Johannes Lohmar Markus Bambach Gerhard Hirt Thomas Kiefer Daniel Kotliba 《国际钢铁研究》2014,85(11):1525-1532
109.
110.
The evolution of surface defects during shape rolling of high‐speed steel billets is studied using longitudinal surface defects prepared by machining and welding. The reduction of the defects during rolling in a production mill is compared to the total area reduction of the billets. Samples are collected after pass 4, 6, 8, 14, 19 and the final pass, 28, representing the finished 5.5mm wire. By inspecting the cross sections, the rotation of the billets from pass to pass is evaluated. Results from FE simulations on solid billets are compared to the experimental results. Generally, simulations predict less reduction than observed experimentally. In most cases cracks reduce most effectively followed by carbon steel welds and stainless steel welds. 相似文献