82B盘条拉拔后抗拉强度低原因分析

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DOI ：10.26915/j.issn1003-0514.2025.03.004

中图分类号：TG142.1 文献标识码：B 文章编号：1003-0514（2025）03-0011-03

Analysis of the reasons for low tensile strength of 82B wire rod after cold drawing

Zhao （Lingyuan Co.，Ltd，Lingyuan 1225Oo，Liaoning，China）

Abstract：Inorder to solve the problemoflowtensile strengthof82B stelwireaftercolddrawingfor prestressed steel strs with a diameter of Φ14mm produced by a certain steel plant，a combination of sampling inspection analysis，data comparisonexperimental verification wasadopted.The finalresults showedthatthesevere network carbide inthecore meshofthesample wasthemainreasonfor thelowtensilestrengthofthe wirerodafterdrawing.Theelectromagnetic stiing positionattheendofthecastingmachinewaslcatedattheback（inthedirectionofpullngthebilet），whichdidnotmatch theactualcentersolidphaseate of 0.1-0.2（teoptialinstallationposiionoftendelectromageticstiring）oftecasting billet.This was the mainreason forthesevere carbonsegregation inthecenterofthecasting biletthesevere network carbide in the center mesh of the wire rod.

Key Words：network carbide；tensile strength；end electromagnetic stirring position；center segregation

1前言

某钢厂2022年底开始开发生产 Φ14mm 规格82B钢，至2024年5月份前总计生产5批次约1700吨，发用户使用未反馈存在问题。（剩余2163字）