| 南钢铌微合金化汽车后桥横梁用热轧钢带TL1114Nb的开发 |
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| 引用本文： | 郜书忠,仇必宁,李军. 南钢铌微合金化汽车后桥横梁用热轧钢带TL1114Nb的开发[J]. 特殊钢, 2011, 32(2): 34-36 |
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| 作者姓名： | 郜书忠 仇必宁 李军 |
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| 作者单位： | 南京钢铁联合有限公司带钢厂，南京210035 |
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| 摘 要： | TL1114Nb(%:0.07～0.13C、0.80～1.25Mn、0.10～0.30Si、≤0.010P、≤0.010S、0.03～0.05Nb、0.02～0.07Alt)钢的生产流程为100 t UHP电弧炉-LF(VD)-150 mm×150 mm连铸-连轧工艺。研制结果表明,通过采用合理的轧制加热温度(1 100～1 200℃),适当提高终轧温度(780～820℃),控制轧后冷速(喷水4 s,风冷)和卷取温度(700℃),带钢各项指标合格:TL1114Nb热轧钢带的晶粒为10～10.5级,组织为铁素体+珠光体,无异常组织,带钢的屈服强度Rel 440～460 MPa,抗拉强度Rm 530～550 MPa,伸长率A 31.5%～33.0%,冷弯d=a合格。
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| 关 键 词： | 100tEAF-LF(VD)-CC-连轧流程 铌微合金化 热轧带钢 汽车后桥横梁钢 开发 |
| 收稿时间： | 2010-11-23 |
Development of Hot Rolled Strip of Niobium Microalloying Steel TL1114Nb for Rear Axle Crossbeam of Auto at Nanjing Steel |
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| Gao Shuzhong,Qiu Bining,Li Jun. Development of Hot Rolled Strip of Niobium Microalloying Steel TL1114Nb for Rear Axle Crossbeam of Auto at Nanjing Steel[J]. Special Steel, 2011, 32(2): 34-36 |
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| Authors: | Gao Shuzhong Qiu Bining Li Jun |
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| Affiliation: | Hot Strip Rolling Mill, Nanjing Iron and Steel Co Ltd, Nanjing 210035 |
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| Abstract: | The production flow sheet for steel TL1114Nb (% ：0. 07 - 0. 13C, 0. 80 - 1. 25Mn, 0. 10 〜0.30Si, ≤ 0.010P, ≤0.010S, 0. 03 〜0.05Nb, 0. 02 〜0. 07All) is 100 t UHP arc furnace-LF (VD)-150 mm x 150 mm billet casting-continuous rolling process. Examination results show that by using reasonable heating temperature for rolling ( 1 100 ~ 1 200 ℃ ) , suitable increasing finishing rolling temperature (780 ~ 820℃ ) and coiling temperature (700℃ ) , controlling cooling speed after rolling ( spraying water for 4 s, fan cooling) , all the various indexes of properties of hot rolled strip steel TL1114Nb are qualified i. e. strip grain size rating 10 ~ 10. 5 , structure- ferrite + pearlite without abnormal structure, strip yield strength Rel 440 -460 MPa, tensile strength Rm 530 - 550 MPa, elongation A 31. 5% - 33. 0% , cokl-bending ( d=a) test qualified. |
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