低成本TMCP交货Q550D钢板的开发研究  

Research on the Development of Low Cost TMCP Delivery Q550D Steel Plate

作　　者：李新宇 王川 张德勇 李伟 欧阳宇 Li Xinyu;Wang Chuan;Zhang Deyong;Li Wei;Ouyang Yu(Minmetals Yingkou Plate Co.,Ltd.,Yingkou Liaoning 115000)

机构地区：[1]五矿营口中板有限责任公司,辽宁营口115000

出　　处：《山西冶金》2021年第3期14-15,40,共3页Shanxi Metallurgy

摘　　要：Q550D厚度≤20 mm规格基本采用C-Mn-Nb-Cr-B系成分设计,交货状态大多数采用"TMCP/DQ+回火"或"淬火+回火"。其中w(C)为0.06%~0.13%,需要进行热处理,工序长,成本高。对此,对Q550D成分和工艺进行了研究,取消Cr和B元素的加入,添加Ti(0.05%~0.07%)并提高w(C)(0.13%~0.16%);取消"回火"工序。最终,开发出了以"TMCP"状态交货的低成本Q550D。The Q550 D Thickness less than 20 mm specification basically adopts the C-Mn-Nb-Cr-B system composition design,and delivery status mostly use "TMCP/DQ tempering" or "quenching tempering".The w(C)0.06%~0.13%needs heat treatment,long process and high cost.In this paper,Q550 D composition and process are studied with removing Cr and B elements,adding Ti(0.05%~0.07%)and increasing w(C)(0.13%~0.16%)and canceling the tempering process.Eventually,low cost Q550 D of delivery in TMCP condition developed.

关 键 词：Q550D TMCP 低成本 

分 类 号：TG142[一般工业技术—材料科学与工程]