Development of Hot Rolled Strip of Niobium Microalloying Steel TL1114Nb for Rear Axle Crossbeam of Auto at Nanjing Steel

郜书忠; 仇必宁; 李军

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Development of Hot Rolled Strip of Niobium Microalloying Steel TL1114Nb for Rear Axle Crossbeam of Auto at Nanjing Steel

更新时间：2026-01-21

- Development of Hot Rolled Strip of Niobium Microalloying Steel TL1114Nb for Rear Axle Crossbeam of Auto at Nanjing Steel
- Special Steel Vol. 32, Issue 2, Pages: 34-36(2011)
- 作者机构：
  
  南京钢铁联合有限公司带钢厂,南京,210035
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：23 November 2010，
  
  Online First：09 November 2022，
  
  Published：09 November 2011
- 稿件说明：
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郜书忠, 仇必宁, 李军. 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.
DOI：

郜书忠, 仇必宁, 李军. 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. DOI：

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R

440～460 MPa

抗拉强度R

530～550 MPa

伸长率A 31.5%～33.0%

冷弯d=a合格。

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 R

440 -460 MPa

tensile strength R

530 - 550 MPa

elongation A 31. 5% - 33. 0%

cokl-bending ( d=a) test qualified.

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