共查询到19条相似文献,搜索用时 46 毫秒
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针对传统数学工具建立的板形关系模型的固有缺陷,为了提高板形预测精度,提出了一种基于人工神经网络建模的自适应板形预测控制算法.仿真实验结果表明采用本文所建立的预测模型具有较高的预测精度. 相似文献
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板形辊的应用已很普遍,其工作原理也有多有介绍,但对于板形辊的维修信息很少报道,在实践经验积累的基础上,总结出了板形辊检修中的关键环节,希望对板形辊的用户有所帮助。 相似文献
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试论实现高精度板形和厚度一体化控制的途径 总被引:2,自引:1,他引:1
分析了板带轧制过程中板形和凸度控制的重要性,减少凸度能显著提高成材率,而轧制过程的固有特性命名得板形和凸度难以控制,为此,讨论了当前常用的3种板形控制模型及其特点,探讨了板形和厚度一体化控制的实施途径。 相似文献
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船舶钢板激光弯曲成形的实验研究 总被引:6,自引:0,他引:6
在对船舶钢板激光弯曲成形过程进行实验研究中,采用CO2激光器研究了激光功率、扫描速度、扫描次数以及钢板厚度对船舶钢板激光弯曲成形的影响规律。实验中实时测量了船舶钢板激光弯曲成形过程钢板弯曲角度和温度的变化。结果表明:钢板弯曲角度随激光功率的增加而增加,随激光束扫描速度的增加而减小,而且随着钢板厚度的增加,弯曲角度减小;激光工艺参数和钢板厚度都对钢板激光多次扫描成形产生影响,钢板的弯曲角度随着激光扫描次数的增加而增加。对于较薄的船舶钢板,钢板弯曲角度随扫描次数增加近似呈线性增加,而较厚的钢板,随扫描次数的增加,钢板弯曲角度的增加逐渐减小。 相似文献
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分析了造成厚板板形和力学性能不合格的原因,通过采取改造翻板机、优化驱动电机的控制和改造轧后控冷系统等措施,使厚板的板形无质量异议,产品一次性能合格率从78.26%提高到95.43%。 相似文献
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《Journal of Materials Processing Technology》2014,214(8):1710-1720
Full penetration laser welding was carried out on a 10 mm steel plate using a 16 kW maximum power continuous wave thin disk laser. Upper surface and lower surface of molten pool were observed synchronously with two high speed CCD cameras during the welding process. The lower surface was much longer and more unstable than the upper one. A three dimensional laser deep penetration welding model in which volume of fluid (VOF) method was combined with a ray-tracing algorithm was used to simulate the dynamic coupling between keyhole and molten pool in laser full penetration welding. The calculated weld cross-section morphology and molten pool length on both upper side and lower side agree well with experimental results. Evolution of molten pool in lower side during full penetration laser welding was analyzed, periodical features of energy coupling, molten pool behavior and keyhole dynamics in laser full penetration welding were identified and discussed. 相似文献