An Analysis on Cleanliness of Die Steel H13 Steelmaking by 40 t EBT EAF-LF-VD-Ingot Casting Process
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An Analysis on Cleanliness of Die Steel H13 Steelmaking by 40 t EBT EAF-LF-VD-Ingot Casting Process
Special SteelVol. 34, Issue 5, Pages: 61-63(2013)
作者机构:
1. 北京科技大学冶金与生态工程学院,北京,100083
2. 中原特钢股份有限公司,济源,454685
作者简介:
基金信息:
DOI:
CLC:
Received:07 May 2013,
Online First:22 September 2022,
Published:22 September 2013
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庞永刚, 侯明山, 胡建成, et al. An Analysis on Cleanliness of Die Steel H13 Steelmaking by 40 t EBT EAF-LF-VD-Ingot Casting Process[J]. Special Steel, 2013, 34(5): 61-63.
DOI:
庞永刚, 侯明山, 胡建成, et al. An Analysis on Cleanliness of Die Steel H13 Steelmaking by 40 t EBT EAF-LF-VD-Ingot Casting Process[J]. Special Steel, 2013, 34(5): 61-63.DOI:
An Analysis on Cleanliness of Die Steel H13 Steelmaking by 40 t EBT EAF-LF-VD-Ingot Casting Process
The steelmaking process for test hot working die steel H13 (/% : 0.36-0.38C
0.36-0.38Mn
0.89-0.91Si
0.007-0.010P
0.006-0.011S
5.10-5.15Cr
1.12-1.18Mo
0.84-0.89V) is 40 t eccentric bottom tapping arc furnace-ladle furnace refining-VD treatment-4. 65 t ingot casting process. With analysis on total oxygen and nitrogen content in liquid- T [O
]
and [ N
]
and analysis on morphology and ingredient of inclusions in steel
the cleanliness of steel H13 produced by this process flow sheet has been studied. Results show that after refining by LF-VD process the average total oxygen content in steel H13- T[O
]
is 22 x 10
-6
and the average nitrogen- [N
]
is 95 x 10
-6
the main inclusions in Φ200 mm forging are deoxidation products- alum
inium oxide with sulHdes including manganese sulfide and nitride formed by segregation ; the sizes of inclusions are mainly about 5 μm
the sizes of some inclusions can come up to about 10 μm. The steel H13 steelmaking by this flow sheet could meet the requirement for cleanliness of that steel grade.