大型化工装备用A387Gr11CL2特厚钢板的研制  

Development of A387Gr11CL2 Extra Heavy Steel Plate for Large Chemical Engineering Equipments

作　　者：宋延成 张明 徐伟明 张健 张奇毅 Song Yancheng;Zhang Ming;Xu Weiming;Zhang Jian;Zhang Qiyi(Jiangyin Xingcheng Special Steel Works Co.,Ltd)

机构地区：[1]江阴兴澄特种钢铁有限公司

出　　处：《宽厚板》2022年第4期22-24,共3页Wide and Heavy Plate

摘　　要：采用转炉冶炼、LF精炼、RH真空脱气处理、连铸、热轧和热处理工艺,研制开发150 mm厚度A387Gr11CL2钢板。通过Gleeble热模拟试验得到A387Gr11CL2钢板的相变点和静态连续冷却转变曲线。在钢板经过(940±5)℃淬火、(710±5)℃回火、(690±14)℃×24 h高温长时间模拟焊后热处理后,分别检验淬火+回火态和淬火+回火+模焊态性能。结果表明:两种状态钢板1/4和1/2厚度处的组织均为贝氏体+铁素体,晶粒细小均匀,综合力学性能优异,完全能够满足大型化工装备的使用技术要求。The process of BOF melting,LF refining,RH vacuum degassing,continuous casting,hot rolling and heat treating is used to develop 150 mm thick A387 Gr11 CL2 steel plate.The phase transition point and static continuous cooling transition curve of A387 Gr11 CL2 steel plate are obtained by Gleeble thermal simulation test.After quenching at(940±5)℃,tempering at(710±5)℃,long time simulated PWHT at(690±14)℃×24 h,mechanical properties of quenching+tempering,quenching+tempering+simulated PWHT are tested respectively.The results show that the microstructure at 1/4 and 1/2 thickness positions of the steel plate under two conditions is of bainite and ferrite with uniform and fine grains.The comprehensive mechanical properties are excellent,and capable of satisfying the application technical requirements of large chemical engineering equipment.

关 键 词：化工设备 特厚钢板 A387Gr11CL2 淬火 回火 

分 类 号：TQ050.4[化学工程] TG142.1[一般工业技术—材料科学与工程]