Development and Process Practice of Weathering Steel S355J2W

栾文林; 刘志远; 赵定国

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Development and Process Practice of Weathering Steel S355J2W

更新时间：2026-01-21

- Development and Process Practice of Weathering Steel S355J2W
- Special Steel Vol. 35, Issue 1, Pages: 43-45(2014)
- 作者机构：
  
  1. 河北钢铁集团唐钢中厚板公司,唐山,063000
  2. 河北联合大学冶金与能源学院,唐山,063009
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：04 September 2013，
  
  Online First：06 September 2022，
  
  Published：06 September 2014
- 稿件说明：
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栾文林, 刘志远, 赵定国. Development and Process Practice of Weathering Steel S355J2W[J]. Special Steel, 2014, 35(1): 43-45.
DOI：

栾文林, 刘志远, 赵定国. Development and Process Practice of Weathering Steel S355J2W[J]. Special Steel, 2014, 35(1): 43-45. DOI：

摘要

研发的耐候钢S355J2W(/%:0.06~0.10C

0.20~0.40Si

1.00~1.30Mn

≤0.008S

≤0.020P

0.25~0.40Cu

0.30~0.55Cr

0.10~0.30Ni

0.020~0.040Nb

0.020~0.050Alt)的试生产流程为铁水-120 t顶底复吹转炉-LF-250 mm×2 000 mm板坯连铸-轧制≤16 mm板。通过采取控制转炉终点[C

]

≤0.05%

]

≤0.015%

精炼时(FeO)+(MnO)≤1.5%

(SiO2)≤15%

精炼渣碱度≥3.0

[Al

]

s≥0.025%

按Ca/Al=0.06~0.12

喂入钙线

连铸时采用耐候钢专用保护渣[主要成分/%:34.0CaO

28.0SiO

4.6Al

≤6(Li

O+B

)

]

控制开坯温度1 010~1 060℃等工艺措施

≤16 mm耐候钢S355J2W成品板铝含量为0.025%~0.035%

钢中平均氧含量为21×10

-6

平均氮含量为31×10

-6

钢中非金属夹杂物的尺寸基本≤14μm

各项冶金质量指标合乎要求。

Abstract

The pilot production flow sheet for developed weathering steel S355J2W (/% : 0.06 ~ 0. 10C

0.20 ~ 0.40Si

1.00-1. 30Mn

≤0.008S

≤0.020P

0.25 〜0.40Cu

0.30 ~ 0. 55Cr

0.10 〜0. 30Ni

0. 020 ~ 0. 040Nb

0. 020 ~ 0. 050Alt) is hot metal-120 t top and bottom combined blown converter-LF-250 mm x2 000 mm slab CC-≤16 mm plate rolling process. With using the process measures including controlling converter end [ C

]

≤0.05% and [P

]

≤0. 015%

in refining ( FeO) + ( MnO)≤1. 5%

( SiO

) ≤15%

refining slag basicity ≥3. 0

[Al

]

≥0.025% and feeding calcium wire according to Ca/Al = 0. 06 〜0. 12

in casting using special-purpose mold

shielding flux for weathering steel [main ingredient/%: 34.0CaO

28.0SiO

4.6Al

≤

6 ( Li

O+ B

)

]

controlling breakdown temperature 1 010 ~ 1 060℃

the aluminium content in ≤16 mm finished plate of weathering steel is 0. 025% ~0. 035%

the average oxygen content in steel is 21 x 10

-6

and the average nitrogen content in steel is 31 x 10

-6

the size of nonmetallic inclusions in steel normally ≤14μm

and each metallurgy quality index meets the requirement of standard.

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