Measurement and control of variable geometry during ring rolling
Measurement and control of variable geometry during ring rolling
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DOI：
10.1109/cca.2015.7320815
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发表时间：
2015-11
期刊：
影响因子：
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通讯作者：
M. Arthington;Christopher J. Cleaver;J. Allwood;S. Duncan
中科院分区：
文献类型：
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作者：
M. Arthington;Christopher J. Cleaver;J. Allwood;S. Duncan
环件轧制是一种生产直径达6米的高强度无缝金属环件的工业成形工艺。厚壁圆柱环材料，通常是金属合金，在两个或多个内外滚子之间压缩并旋转，直到达到目标几何形状，通常是外径。一种常见的设备配置是一对径向作用滚子和一对轴向滚子，即径向-轴向环件轧制(RARR)机。最常见的产品几何形状具有轴对称的横截面轮廓。然而，在成形过程中，当横截面通过每对辊子时，横截面会发生显著变化。这种不规则的形状阻碍了几何状态的测量，这使得过程的建模和控制变得复杂。传感能力的最新发展为成形过程中的环几何形状提供了高分辨率测量。在这项工作中，我们介绍了这些传感技术的进展，这些传感技术是一种存储和预测环件几何状态的数值方法，以及利用现有的RARR工厂硬件实现轧制环件非轴对称截面轮廓的控制律。
Ring-rolling is an industrial forming process for producing high-strength seamless metal rings up to 6m diameter. Thick-walled cylindrical rings of material, typically metallic alloys, are compressed between two or more internal and external rollers and rotated until a target geometry, often outer diameter, is achieved. A common plant configuration is that of a pair of radially acting rollers and a pair of axial rollers, the radial-axial ring rolling (RARR) machine. The most commonly produced product geometries have an axisymmetric cross-section profile. However, during the forming process the cross section is changed significantly as it passes through each pair of rollers. This irregular shape hinders geometry state measurement and this complicates modelling and control of the process. Recent developments in sensing capabilities offer high resolution measurement of ring geometry during forming. In this work, we present advances in these sensing techniques, a numerical method for storing and predicting the ring's geometrical state and control laws to achieve a non-axisymmetric cross-section profile in rolled rings using existing RARR plant hardware.