弛豫技术在低屈强比钢板生产中的应用  

Application of relaxation technique on the low yield ratio plate production

作　　者：宋国栋 

机构地区：[1]山东钢铁股份有限公司济南分公司宽厚板厂,山东济南250101

出　　处：《轧钢》2015年第6期75-77,共3页Steel Rolling

摘　　要：轧后弛豫技术是实现钢板低屈强比性能的基本控制手段,此控制手段是以实现钢板的双相组织为目的,主要通过控制水冷过程中的开冷温度、终冷温度等参数来实现的。通过钢板中软相组织与硬相组织的结合,得到较低的屈强比,可基本控制在0.87以下,实现了低屈强比高建钢、油罐钢、管线钢等一系列钢种的批量生产。Relaxation technique is the baltic way to reach a low yield ratio of the steel plate with duplex microstructure. Controlling the start cooling temperature and finishing cooling temperature is the main way to obtain this type of microstructure. The exist- ence of the soft phase and hard phase in steel plate may reach a low yield ratio which lower than 0. 87. The low yield ratio steel plates for high-rise building, oil tank and pipeline have mass-produced by this technique.

关 键 词：弛豫技术 低屈强比 双相组织 开冷温度 终冷温度 

分 类 号：TG335[金属学及工艺—金属压力加工]