Practice of Production of Spring Steel 65Mn by 100 t Converter-Ladle Furnace Refining concasting

吕瑞国; 李京军; 阮细保

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Practice of Production of Spring Steel 65Mn by 100 t Converter-Ladle Furnace Refining concasting

更新时间：2026-01-21

- Practice of Production of Spring Steel 65Mn by 100 t Converter-Ladle Furnace Refining concasting
- Special Steel Vol. 26, Issue 4, Pages: 52-53(2005)
- 作者机构：
  
  新余钢铁有限责任公司,新余,338001
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：16 February 2005，
  
  Online First：17 May 2023，
  
  Published：17 May 2005
- 稿件说明：
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吕瑞国, 李京军, 阮细保. Practice of Production of Spring Steel 65Mn by 100 t Converter-Ladle Furnace Refining concasting[J]. Special Steel, 2005, 26(4): 52-53.
DOI：

吕瑞国, 李京军, 阮细保. Practice of Production of Spring Steel 65Mn by 100 t Converter-Ladle Furnace Refining concasting[J]. Special Steel, 2005, 26(4): 52-53. DOI：

摘要

采用100t 顶底复吹转炉-100t 钢包炉(LF)精炼-6机6流150mm×150mm方坯连铸机生产65Mn 弹簧钢。转炉终点[C]0.08%～0.12%

[P]≤0.012%

[S]≤0.03%

增碳剂收得率为85%～90%。 LF精炼渣碱度2.5～3.0

并喂Si-Ca线和吹氩。连铸时中间包钢水温度1495～1515℃

铸速1.6～1.8m/min

采用结晶器电磁搅拌。20炉65Mn钢质量检验结果表明，化学成分(%):C0.63～0.68

Mn 0.95～1.07

P0.009～0.023

S0.006~0.017

连铸坯断面碳含量偏差≤0.02%C。65Mn钢盘条产品符合GB/T4354-1994要求。

Abstract

The spring steel 65Mn was produced by 100 t top and bottom combined blown converter melting- ladle furnace refining- 6 strand 150 mm×150 mm billet concasting. The end point [C] was0.08%～0. 12%

[P]≤0.012% and [S]≤0.03%

and the yield of recarburizer was 85%～90%. During refining the basicity of slag was 2.5～3.0 with feeding Si-Ca wire and argon stirring. During concasting the temperature of liquid steel in tundish was 1495～1515 ℃

the casting speed 1.6～1.8 m/min using mold electromagnetic stirring. The quality experiment results of 20 heats 65Mn steel showed that the analyses of steel were C 0.63~0.68

Mn 0.95～1.07

P0.009～0.023

S0.006～0.017

and the deviation of carbon content at section of casting billet was ≤0.02%.The coil products of 65Mn steel met the requirements of standard GB/T4354- 1994.

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