摘要:
为了提高抗震钢筋HRB500E的强度与屈强比,保证其抗震性能,针对攀成钢棒、线材机组生产实际条件,采用不同微合金化方式,不同轧后冷却工艺,进行了HRB500E高强抗震钢筋生产实践。高线机组生产Ø6~12 mm规格钢筋时,采用钒氮微合金化,添加0.08%~0.11%的V,V/N接近4:1,轧后斯太尔摩风冷工艺;棒材机组生产Ø14~40 mm钢筋时,采用钒氮+钼复合微合金化,添加0.06%~0.12%的V,V/N接近4:1,0.03%~0.05%的Mo,轧后自然冷却。结果表明:生产的HRB500E获得了高的强度和良好的抗震性能,相关指标满足国家标准和用户的要求。
Abstract:
In order to increase the strength and yield strength-to-tensile strength ratio of the aseismatic rebar,high-strength aseismatic rebar HRB500E was produced by employing different microalloying way and cooling process after rolling according to practical production conditions of bar and wire rod units in Pangang Group Chengdu Steel & Vanadium Co.,Ltd.When Ø 6~12 mm HRB500E was produced by high speed wire mill,the steel was micro-alloyed by VN and Stelmor wind cooling process was adopted.After 0.08%~0.11% of V was added to the steel,V to N ratio was close to 4:1.When Ø 14~40 mm HRB500E was produced by bar mill,the steel was micro-alloyed by VN + Mo,and natural cooling was adopted.0.06%~0.12% V and 0.03%~0.05% Mo were added to the steel,and V to N ratio was close to 4:1 after the addtion.The results show that the rebar HRB500E so produced is of high strength and good anti-seismic properties,and satisfies the national standards and client requirements.
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