Productive Practice of Hot-Rolled Φ6 ~ 40 mm HRB500E  Reinforcing Steel

王琳松; 张新建; 常进; 龙雨; 陈黔湘; 高长益

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Productive Practice of Hot-Rolled Φ6 ~ 40 mm HRB500E Reinforcing Steel

更新时间：2026-01-21

- Productive Practice of Hot-Rolled Φ6 ~ 40 mm HRB500E Reinforcing Steel
- Special Steel Vol. 40, Issue 1, Pages: 34-38(2019)
- 作者机构：
  
  1. 水城钢铁集团公司,六盘水,553028
  2. 水城钢铁集团公司制造管理部,六盘水,553028
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：19 July 2018，
  
  Online First：24 May 2022，
  
  Published：24 May 2019
- 稿件说明：
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王琳松, 张新建, 常进, et al. Productive Practice of Hot-Rolled Φ6 ~ 40 mm HRB500E Reinforcing Steel[J]. Special Steel, 2019, 40(1): 34-38.
DOI：

王琳松, 张新建, 常进, et al. Productive Practice of Hot-Rolled Φ6 ~ 40 mm HRB500E Reinforcing Steel[J]. Special Steel, 2019, 40(1): 34-38. DOI：

摘要

根据GB/T 1499.2-2018标准

水钢设计了Φ36～40 mm HRB500E螺纹钢筋的内控成分为（%）0.22～0.25C、0.60～0.70Si、1. 50～1.60Mn、0.11～0.13V、P≤0. 045、S≤0. 045。采用"100 t顶底复吹转炉冶炼-挡渣出钢-脱氧合金化-LF炉精炼-160方坯连铸-方坯加热-棒材轧制-空冷"的工艺流程

生产出的Φ36 mm HRB500E螺纹钢筋的屈服强度Re

540～580 MPa

抗拉强度R

705～735 MPa

断后伸长率A 15. 5%～20. 5%

最大力总延伸率A

11.5%～14.0%

实测抗拉强度与实测屈服强度之比R

为1.25～1.32

实测屈服强度与GB/T 1499.2-2018标准要求的最低屈服强度之比R

为1.08～1.16

因此

钢筋的力学性能满足GB/T 1499.2-2018标准要求。生产出的Φ40 mm HRB500E钢筋的微观组织为铁素体+珠光体

晶粒度为9.5～10级。

Abstract

According to GB/T 1499. 2-2018 standard

the internal controlled composition of Φ36 - 40 mm HRB500E rebar is designed as (% ) 0.22 ~0.25C

0.60 ~0.70Si

1.50 ~ 1.60Mn

0.11 ~0.13V

P≤ 0.045

S≤ 0.045 in shuigang. The productive process such as steelmaking in l00t top and bottom combined blown converter- tapping with slag stopping-deoxidization and alloying-LF refining-continuous casting of 160 billet-reheating of billet -rolling of rebar-air cooling is used. The mechanical properties of Φ 36 mm HRB500E rebar are as follows: yield strength R

540 -580 MPa

tensile strength R

705 ~ 735 MPa

percentage elongation after fracture A 15.5% 〜20.5%

total elongation at maximum force A

11.5% ~14.0%

the ratio of actual measured tensile strength to actual measured yield strength R

is 1.25 ~ 1. 32

the ration of actual measured yield to yield strength stipulated in GB/T 1499. 2-2018 R

is 1.08 〜1.16

therefore

mechanical properties of the rebar meet requirements of GB/T 1499.2-2018 standard. The microstructure of Φ40 mm HRB500E rebar produced is ferrite and pearite

its grain size is 9.5 ~ 10 grade.

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