焊管2024，Vol.47Issue(8)：50-54,5.DOI:10.19291/j.cnki.1001-3938.2024.08.008
轻量化脚手架钢管用超高强钢带开发
Development of UHSS Strips for Lightweight Scaffold Steel Pipes
摘要
Abstract
To achieve scaffold lightweight,tensile strength,compressive strength and bending strength of Q355 and alternative material Q620M are calculated.By replacing Q355 steel with Q620M steel while keeping the outer diameter of scaffold steel pipe constant and reducing the wall thickness,25%weight reduction can be achieved.Strengthening mechanism alloy composition design mainly based on titanium precipitation strengthening and TMCP were adopted to get low cost production control of Q620M ultra-high strength hot-rolled steel strip.Practice has shown that product of strength and ductility of Q620M ultra-high strength hot-rolled steel strip exceeds 15 GPa%.After slitting,forming and HF welding,the weld,HAZ and matrix structure are uniform without heat treatment,and the steel pipe strength and plasticity indicators meet the requirements for scaffold use.关键词
脚手架/超高强钢/轻量化/焊管/控轧控冷Key words
scaffold/UHSS/lightweight/welded pipe/TMCP分类
矿业与冶金引用本文复制引用
张海斌,张玉文,李学通..轻量化脚手架钢管用超高强钢带开发[J].焊管,2024,47(8):50-54,5.基金项目
2023年度中央引导地方科技发展资金项目"吉帕级超高强汽车板核心制备工艺与应用技术研究"(项目编号236Z1024G). （项目编号236Z1024G）
