高级别桥壳钢Q460QK关键技术开发  

KEY TECHNOLOGIES DEVELOPMENT OF HIGH GRADE AXLE HOUSING STEEL Q460QK

作　　者：程晓 张卫攀 徐桂喜 Cheng Xiao;Zhang Weipan;Xu Guixi(HBIS Group Hansteel Company, Handan 056015, Hebei)

机构地区：[1]河钢集团邯钢公司,河北邯郸056015

出　　处：《河北冶金》2022年第3期25-28,共4页Hebei Metallurgy

摘　　要：采用低碳、低碳当量、低磷、超低硫及微合金化的化学成分设计,通过高洁净度冶炼、高品质铸坯生产以及TMCP控轧控冷工艺,成功开发出了8~18 mm高强韧性桥壳钢Q460QK。经检测,该桥壳钢的微观组织为铁素体+珠光体,组织均匀、晶粒尺寸细小,具有优异的综合性能。Adopting the chemical composition design of low carbon,low carbon equivalent,low phosphorus,ultra-low sulfur and microalloying,the 8~18 mm high strength and toughness axle housing steel Q460QK was successfully developed through high cleanliness smelting,high quality billet production and optimized TMCP controlled rolling and cooling process.The test shows that the microstructure of the bridge shell steel is ferrite+pearlite,with uniform structure,fine grain size and excellent comprehensive properties.

关 键 词：高强韧性 桥壳钢 洁净度 TMCP 低碳 微合金化 

分 类 号：TG335.5[金属学及工艺—金属压力加工]