Numerical Simulation on Optimization of Shrinkage Cavity in ESR 7.85t Electrode of Alloy NS1402

谢鑫; 严波; 曾建华; 王建; 吴国荣; 马晓涛; 龙木军

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Numerical Simulation on Optimization of Shrinkage Cavity in ESR 7.85t Electrode of Alloy NS1402

更新时间：2026-01-21

- Numerical Simulation on Optimization of Shrinkage Cavity in ESR 7.85t Electrode of Alloy NS1402
- Special Steel Vol. 38, Issue 3, Pages: 1-4(2017)
- 作者机构：
  
  1. 攀钢集团研究院有限公司,攀枝花,617000
  2. 攀钢集团长城特殊钢有限公司，江油,621704
  3. 重庆大学材料科学和工程学院,重庆,400044
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：25 December 2016，
  
  Online First：19 July 2022，
  
  Published：19 July 2017
- 稿件说明：
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谢鑫, 严波, 曾建华, et al. Numerical Simulation on Optimization of Shrinkage Cavity in ESR 7.85t Electrode of Alloy NS1402[J]. Special Steel, 2017, 38(3): 1-4.
DOI：

谢鑫, 严波, 曾建华, et al. Numerical Simulation on Optimization of Shrinkage Cavity in ESR 7.85t Electrode of Alloy NS1402[J]. Special Steel, 2017, 38(3): 1-4. DOI：

摘要

NS1402合金(/%:0.01C

0.15Si

0.34Mn

0.004P

0.004S

22.33Cr

40.07Ni

3.22Mo

2.29Cu

0.87Ti

0.11Al

30.6Fe)7.85t电渣重熔用40t EAF+VOD冶炼的电极棒凝固收缩过程中容易产生严重的缩孔缺陷。借助商业软件CAD

GEOMESH和MeshCAST

建立了该电极棒的充型和凝固模型

得出模拟中心缩孔直径为248mm

与实测值比较

相对误差为4.6%。结果表明

将电极棒倒置可以减小缩孔直径32.2%;随着绝热板长度的增加

缩孔减轻

将绝热板长度增加200mm

可以基本消除冒口下的缩孔。

Abstract

The serious shrinkage cavity defect in 7. 85 t electrode of alloy NS1402 (/%: 0.01C

0.15Si

0.34Mn

0.004P

0.004S

22.33Cr

40.07Ni

3.22Mo

2.29Cu

0.87Ti

0.11Al

30.6Fe) melted by 40t EAF+VOD for ESR forms easily in solidification process. By using commercial software CAD

GEOMESH and MeshCAST a model of the electrode filling and solidifying has been established to get the simulated diameter of center shrinkage cavity being 248mm

as compared with measured value the relative error is 4.6%. Results show that as the electrode is located upside down

the diameter of shrinkage cavity decreases by 32.2% ; with increasing the length of insulation board the shrinkage cavity reduces

and with increasing the length of insulation board by 200mm

the shrinkage cavity below hot top is basically eliminated.

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