管线钢L450M落锤试验性能波动原因浅析  

The Reason Analysis of the Fluctuations Drop Weight Tear Test Performance in L450 Production Process

作　　者：翟有有[1] 胡明[1] ZHAI Youyou;HU Ming(Gansu Jiu Steel Group Hongxing Iron&Steel Co.Ltd.,Jiayuguan 735100,China)

机构地区：[1]甘肃酒钢集团宏兴钢铁股份有限公司,甘肃嘉峪关735100

出　　处：《甘肃冶金》2025年第1期103-106,共4页Gansu Metallurgy

摘　　要：在试制不同规格L450M钢的生产过程中,出现厚规格产品落锤撕裂性能不合且波动较大问题。结合产品生产过程轧制压下参数,轧后控冷参数,产品金相组织对引起落锤不合和波动的原因进行了分析。结果表明:轧制压下率和轧后冷却能力不足,在厚规格产品中形成粗大铁素体和珠光体晶粒及混晶是造成落锤性能波动和不合格的原因。During the production process of L450 steel,there are significant fluctuations in the drop weight tear test of thick specification products.According to rolling reduction parameters,cooling parameters,and metallographic structure,the reason of significant fluctuations and unqualified performance in the weight tear test are analysed.the results indicate that the reasons of the unqualified performance and significant fluctuations in the drop weight tear test are caused by the coarse ferrite and pearlite grains in thick specification which conformed in insufficient rolling reduction ratio and low cooling capacity rolling process.

关 键 词：管线钢 L450M 落锤撕裂试验 性能波动 

分 类 号：TG142.1[一般工业技术—材料科学与工程]