A Study on Process Control of Inclusion in Pipeline Steel X80

蒋育翔; 焦兴利

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A Study on Process Control of Inclusion in Pipeline Steel X80

更新时间：2026-01-21

- A Study on Process Control of Inclusion in Pipeline Steel X80
- Special Steel Vol. 32, Issue 1, Pages: 36-39(2011)
- 作者机构：
  
  1. 北京科技大学经济管理学院,北京,100083
  2. 马钢股份有限公司,马鞍山,243000
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：17 September 2010，
  
  Online First：27 September 2022，
  
  Published：27 September 2011
- 稿件说明：
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蒋育翔, 焦兴利. A Study on Process Control of Inclusion in Pipeline Steel X80[J]. Special Steel, 2011, 32(1): 36-39.
DOI：

蒋育翔, 焦兴利. A Study on Process Control of Inclusion in Pipeline Steel X80[J]. Special Steel, 2011, 32(1): 36-39. DOI：

摘要

X80微合金化管线钢冶炼的工艺流程为300 t顶底复吹转炉-钢包吹氩微合金化-LF-RH。通过转炉气动挡渣法控制出钢下渣量≤4 kg/t;钢包顶底吹氩搅拌6 min铝粒脱氧;控制LF顶渣CaO/Al

=1.7～1.9

碱度(CaO/SiO

4.5～6

(FeO+MnO)≤1.0%; RH喂FeCa线0.8 kg/t

使T[O

]

达到13×10

-6

夹杂物尺寸≤10μm

≤5μm夹杂物占98.93%

钢中Al

尖晶石夹杂物转变为CaO-MgO-Al

系三元夹杂。分析了冶炼过程夹杂物数量、尺寸形态和组成

得出管线钢夹杂物变性的规律。

Abstract

The process flow sheet to melt microalloying pipeline steel X80 is 300 t top and bottom combined blowing converter-ladle argon blowing and microalloying-LF-RH. With converter gas-dynamic slag stopper to control tapping slag a- mount ≤4 kg/t； ladle top and bottom blowing argon blowing for 6 min with aluminium bullet shooting； controlling LF top slag CaO/Al

= 1. 7 -1.9

basicity of slag (CaO/SiO

) = 4. 5 ~6 and (FeO + MnO) ≤l. 0% ； with feeding FeCa wire 0. 8 kg/t during RH refining process

the T [O

]

is decreased to 13 x 10

-6

the inclusion size ≤10 μm and the ≤5 μm inclusions account for 98. 93% of the total inclusions

and the A1

spinel inclusions are modified to CaO-MgO-Al

series ternary inclusions. The inclusion amount

size

morphology and ingredient

of inclusions during melting process are analyzed to get the modification regulation of inclusions in pipeline steel.

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