{"title":"The precise control of end flare with residual stresses of UHSS thin-walled component in roll forming process","authors":"Jiaojiao Cheng, Jianguo Cao, Zhidong Wei, Xuesong Wang, Hao Zhu, R. Zhao","doi":"10.1080/03019233.2023.2212933","DOIUrl":null,"url":null,"abstract":"ABSTRACT To control precisely end flare of UHSS thin-walled component, FEA (finite element analysis) model of multi-pass RF (roll forming) process is established. Numerical simulations with developed FEA model considered Young's modulus variation and RF tests are conducted to explain the origin of end flare with residual stresses. It's found that the overlap of bending moment caused by residual longitudinal stress and twisting moment caused by residual shear stress in transversal-longitudinal direction leads to opening deformation in front end and back end for hat channel steel. End flare will decrease with the increase of flange length and increase with the increase of material strength. The effect of forming parameters on end flare is analysed that end flare can be reduced with UDT-type (USTB-Durable T) method, constant-arc-length method and appropriate forming parameters. The findings are applied to control end flare of hat channel steel in actual RF process to meet high-precision requirements.","PeriodicalId":14753,"journal":{"name":"Ironmaking & Steelmaking","volume":null,"pages":null},"PeriodicalIF":1.7000,"publicationDate":"2023-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Ironmaking & Steelmaking","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1080/03019233.2023.2212933","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"METALLURGY & METALLURGICAL ENGINEERING","Score":null,"Total":0}
引用次数: 0
Abstract
ABSTRACT To control precisely end flare of UHSS thin-walled component, FEA (finite element analysis) model of multi-pass RF (roll forming) process is established. Numerical simulations with developed FEA model considered Young's modulus variation and RF tests are conducted to explain the origin of end flare with residual stresses. It's found that the overlap of bending moment caused by residual longitudinal stress and twisting moment caused by residual shear stress in transversal-longitudinal direction leads to opening deformation in front end and back end for hat channel steel. End flare will decrease with the increase of flange length and increase with the increase of material strength. The effect of forming parameters on end flare is analysed that end flare can be reduced with UDT-type (USTB-Durable T) method, constant-arc-length method and appropriate forming parameters. The findings are applied to control end flare of hat channel steel in actual RF process to meet high-precision requirements.
期刊介绍:
Ironmaking & Steelmaking: Processes, Products and Applications monitors international technological advances in the industry with a strong element of engineering and product related material. First class refereed papers from the international iron and steel community cover all stages of the process, from ironmaking and its attendant technologies, through casting and steelmaking, to rolling, forming and delivery of the product, including monitoring, quality assurance and environmental issues. The journal also carries research profiles, features on technological and industry developments and expert reviews on major conferences.