Effect of Remelting Parameters Control with 70CaF2-30Al2O3 Slag Series on Surface Quality of Lower Part of ESR Ingot

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Effect of Remelting Parameters Control with 70CaF2-30Al2O3 Slag Series on Surface Quality of Lower Part of ESR Ingot

更新时间：2026-01-21

- Effect of Remelting Parameters Control with 70CaF2-30Al2O3 Slag Series on Surface Quality of Lower Part of ESR Ingot
- Special Steel Vol. 35, Issue 3, Pages: 36-38(2014)
- 作者机构：
  
  湖北新冶钢有限公司炼钢事业部,黄石,435001
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：25 December 2013，
  
  Online First：29 August 2022，
  
  Published：29 August 2014
- 稿件说明：
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柯超. Effect of Remelting Parameters Control with 70CaF2-30Al2O3 Slag Series on Surface Quality of Lower Part of ESR Ingot[J]. Special Steel, 2014, 35(3): 36-38.
DOI：

柯超. Effect of Remelting Parameters Control with 70CaF2-30Al2O3 Slag Series on Surface Quality of Lower Part of ESR Ingot[J]. Special Steel, 2014, 35(3): 36-38. DOI：

摘要

根据双臂电渣炉冶炼的521钢(/%:0.37~0.45C

0.80~1.15Si

4.50~5.30Cr

1.20~1.40No

0.85~1.10V)和GCr15钢(/%:0.97C

1.57Cr)电渣锭下部出现的表面缺陷

统计分析了70CaF

-30Al

二元渣量、下部冶炼电压和电流以及重熔时间对2.5~5 t电渣锭表面质量的影响。结果表明

控制重熔时间(重熔速率)对电渣锭的表面质量有较大影响:5 t 521钢锭渣量200kg

钢锭下部重熔电压55 V

电流15 500~16 800 A

总重熔时间为434~489 min时

钢锭表面光滑

总重熔时间500 mim时

电渣锭下部有厚15 mm的渣疤;2.5 t GCr15钢锭渣量120kg

下部重熔电压43~44 V

电流13 500~14000 A

总重熔时间316~359 min

钢锭表面光滑

总重熔时间380 min

电渣锭下部有7mm深渣沟和夹渣。

Abstract

According to the surface defect occurred at lower part of ESR ingot of 521 steel (/% : 0. 37 ~ 0. 45C

0. 80 ~ 1. 15Si

4. 50 ~5. 30Cr

1. 20 ~ 1. 40Mo

0. 85 ~ 1. 10V) and GCr15 steel (/% : 0. 97C

1. 57Cr) melted by ESR furnace with double electrode

the effect of binary slag amount

lower part remelting voltage and current as well as remelting time on surface quality of 2. 5 ~ 5 t ESR ingot has been statistically analyzed. Results show that control remelting time (remelting rate) has obvious effect on surface quality of ESR ingot: for 5 1521 steel remelting ingot

with slag amount 200 kg

voltage 55 V and current 15 500 ~ 16 800 A in melting at ingot lower part

as total remelting time is 434 ~489 min

the ingot surface is smooth

while the total remelting time is 500 min

there is 15 mm depth slag scar at ESR ingot lower part； for 2. 5 t GCr15 steel remelting ingot

with slag amount 120 kg

voltage 43 ~44 V and current 13 500 ~ 14 000 A in melting at ingot lower part

as the total remelting time is 316 ~ 359min

the surface of ingot is smooth while the total remelting time is 380 min

the ESR ingot lower part has 7 mm depth slag runner and slag inclusion.

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