Development of Tire Cord Steel XLX72A by 80 t Top and Bottom Combined Blown Converter-LF Nol-LF No2-VD-CC Flow Sheet

吴胜军

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Development of Tire Cord Steel XLX72A by 80 t Top and Bottom Combined Blown Converter-LF Nol-LF No2-VD-CC Flow Sheet

更新时间：2026-01-21

- Development of Tire Cord Steel XLX72A by 80 t Top and Bottom Combined Blown Converter-LF Nol-LF No2-VD-CC Flow Sheet
- Special Steel Vol. 32, Issue 3, Pages: 51-53(2011)
- 作者机构：
  
  湘潭钢铁有限公司,湘潭,411101
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：05 January 2011，
  
  Online First：18 October 2022，
  
  Published：18 October 2011
- 稿件说明：
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吴胜军. Development of Tire Cord Steel XLX72A by 80 t Top and Bottom Combined Blown Converter-LF Nol-LF No2-VD-CC Flow Sheet[J]. Special Steel, 2011, 32(3): 51-53.
DOI：

吴胜军. Development of Tire Cord Steel XLX72A by 80 t Top and Bottom Combined Blown Converter-LF Nol-LF No2-VD-CC Flow Sheet[J]. Special Steel, 2011, 32(3): 51-53. DOI：

摘要

通过转炉终点控制-%:≥0.12C、≤0.008P、≤0.010S-1

LF碱性渣精炼≥40 min

LF酸性渣(R=0.8～0.9)精炼30 min-VD 67 Pa≥10 min

软吹氩≥15 min-保护浇铸(钢水过热度≤30℃)

结晶器和末端电磁搅拌等工艺措施

开发了帘线钢XLX72A(%:0.69～0.73C、0.20～0.28Si、0.47～0.55Mn、≤0.015P、≤0.015S、≤0.05Ni、≤0.08Cr、≤0.05Cu、≤0.005Al)。结果表明

钢中Cu、Al含量分别为0.02%～0.03%和0.002%～0.003%

Φ5.5 mm材的抗拉强度R

为1 050～1 090 MPa

断面收缩率Z为43.5%～48.0%

钢中低倍组织和显微夹杂物级别均符合标准要求

使用性能良好。

Abstract

The tire cord steel XLX72A (% ： 0. 69 〜0.73C

0. 20 〜0.28Si

0. 47 〜0.55Mn

≤0.015P

≤ 0. 015S

≤0. 05Ni

≤0. 08Cr

≤0. 05Cu

≤0. 005Al) has been developed by using the operation measures including converter end controlling -% : ≥ 0.12C

≤0. 008P

≤0. 010S- LF Nol basic slag refining for ≥40 min- LF No2 acid slag (R=0. 8 -0. 9) refining for 30 min- 67 Pa VD refining for ≥ 10 min and soft argon blowing for ≥15 min- shielding casting (liquid overheating ≤30 ℃ ) with mold and end electromagnetic stirring. Results show that the Cu and Al content in sled are respectively 0. 02% ~0. 03% and 0. 002% 〜0. 003%

the tensile strength Rm of Φ5. 5 mm product is 1 050 〜1 090 MPa and its reduction of area Z is 43. 5% -48. 0%

the ratings of macrostructure and micro inclusions in steel meet the requirement of standard

and its service performance is better.

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