宽厚板加速冷却自动控制系统的应用

Automatic cooling control system of heavy plate

冷却系统目的是通过改变轧制工艺和冷却工艺条件来改变钢金属组织结构,在不降低韧性的情况下,提高钢板强度;减少钢板不平整度和残余应力,提高钢板质量。为了控制冷却速度[CR]和终冷温度[FCT],使冷却钢板达到规定的质量和密度,并确保整个钢板机械性能均衡,莱钢4300mm厚板生产线采用了Mulpic加速冷却技术来进行钢板温度控制。本文详细介绍了自动控制系统的设备组成、控冷模型以及控冷策略。

The purpose of the cooling system is to change metal structure and construction, increasing plate strength witout reducing plate toughness, through changing rolling technology and cooling conditions, to increase plate quality by reducing plate roughness and unrelieved stress. In order to control the cooling rate [CR] and final cooling temperature [FCT], cool plate to stipulated quality and density, and ensure the balance of the whole plate’s mechanical properties, 4300mm LaiGang heavy plate production line adopts Mulpic cooling technology for plate temperature control. It introduces detailedly the automatic control system’s composition of equipment of all parts of function, the control models, and the control strategy.