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- W2371073000 abstract "In view of lower elongation of HRB500 high-strength and anti-seismic rebars with Nb-microalloying and controlled cooling process in domestic steel plant,microstructure,morphology of fracture,inclusions,chemical composition by sampling are analyzed and researched.The results show that main reason of lower elongation of HRB500 rebars is emergence of abnormal center microstructure for rebars,appearance of high content(50%) and bad morphology(big block) of bainite,the original austenite grain is coarse(50～60μm);the main reason of abnormal microstructure for rebars is that steel-rolling heating temperature is higher(1260℃),termination temperature after controlled cooling is lower(710℃).In view of aboved reason,slag rinsing process,extending the time of blowing argon(longer than 200s),strict control of casting liquid level hight (higher than 650mm) are carried out in steel-making,meanwhile,reducing heating temperature,increasing termination temperature after controlled cooling are carried out in steel-rolling,the lower elongation of HRB500 rebars is eliminated." @default.
- W2371073000 created "2016-06-24" @default.
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- W2371073000 date "2010-01-01" @default.
- W2371073000 modified "2023-09-25" @default.
- W2371073000 title "The Reason Analysis and Control of Lower Elongation for HRB500 High-strengthand Anti-seismic Rebars" @default.
- W2371073000 hasPublicationYear "2010" @default.
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