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BASIC PRINCIPLES OF COLD ROLLING 1 2013-3-30 冷轧的基本原理 Work rolls工作辊 Tension control 张力控制 Backup roll支承辊 AIR blower 吹扫装置 Flatness Bar 板形仪 Loading roll 液压装置 Camber system弯辊装置 BASIC PRINCIPLES OF COLD ROLLING 2 2013-3-30 Rolling – The process of shaping metal by passing it between rolls rotating at the same peripheral speed and in opposite directions to reduce the gauge of a specific product in order to meet a customer’s technical specifications. 轧制— 为了满足客户技术要求，将金属通过两个转动的轧辊使其厚度减薄，两个轧辊的转动速度一致但是方向相反。 During the thickness reduction, the metal and work rolls heat up what leads to deformations affecting the metal flatness. Modern rolling mills are equipped with systems that are able to reduce possible flatness problems generated during the rolling process. 在厚度减少的过程中，金属和工作辊温度的升高影响板形。现代轧机安装了可减少在轧制过程可能出现的板形问题的系统。 To better understand how the control system works, let’s divide this process into parts which can in any way contribute to GOOD or BAD flatness, depending on how it is used. 为了更好地理解板形控制系统的运作情况，我们把这一工艺分成几个具体的部分，任何部分都可能促成良好板形或导致不良板形的产生，关键取决于其使用状况。 METAL 金属 FLATNESS BAR 板形仪 TILTING 倾斜 CAMBER or BENDING 弯辊 SPRAY (COOLANT NOZZLES) 喷射（轧制油喷嘴） ENTRY TENSION 入口张力 EXIT TENSION 出口张力 BASIC PRINCIPLES OF COLD ROLLING 3 2013-3-30 1. METAL – The metal must have some characteristics as described below: 金属— 金属必须具备以下几方面的特点 * Cross Profile (Parabolic shape and symmetrical) * 横向板形（对称的抛物线） * Uniform hardness throughout the coil * 整卷一致的硬度 * A defined thickness * 确定的厚度 * Known chemical composition * 名义...