Production Practice of 85 〜95 t Ingot of Steel S34MnV for Marine Crank

庞宗旭; 林腾昌; 朱荣; 王成杰

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Production Practice of 85 〜95 t Ingot of Steel S34MnV for Marine Crank

更新时间：2026-01-21

- Production Practice of 85 〜95 t Ingot of Steel S34MnV for Marine Crank
- Special Steel Vol. 34, Issue 3, Pages: 49-52(2013)
- 作者机构：
  
  北京科技大学冶金与生态工程学院,北京,100083
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：20 December 2012，
  
  Online First：21 September 2022，
  
  Published：21 September 2013
- 稿件说明：
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庞宗旭, 林腾昌, 朱荣, et al. Production Practice of 85 〜95 t Ingot of Steel S34MnV for Marine Crank[J]. Special Steel, 2013, 34(3): 49-52.
DOI：

庞宗旭, 林腾昌, 朱荣, et al. Production Practice of 85 〜95 t Ingot of Steel S34MnV for Marine Crank[J]. Special Steel, 2013, 34(3): 49-52. DOI：

摘要

曲柄用钢S34-MnV的生产流程为100 t Consteel电弧炉-LF-VD+VC(真空浇注)-铸锭工艺。运用扫描电镜和数值模拟对S34MnV钢锭缺陷部位钢样进行了观察和分析

得出造成曲柄探伤不合的原因为钢锭沉积锥处有大量非金属夹杂物富集。通过精炼前喂2 m/t铝线深脱氧、终脱氧喂Ca-si线

控制钢中夹杂物类型

调整渣系、优化钢锭模结构等优化工艺措施

减轻了钢锭的沉积锥缺陷

使钢锭废品率由原来的21%降低至6%

钢锭尾部氧含量由原来的23×10

-6

降低至12×10

-6

。

Abstract

The production flow sheet of steel S34MnV for marine crank is 100 t Consteel arc furnace-LF-VD + VC (vacuum casting) -ingot process. The observation and analysis on samples of defect region of steel S34MnV ingot are carried out by using scanning electron microscope and numerical simulation to get that the a large amount of non-metallic inclusions enriched at deposit cone of ingot is the cause of rejection of crank by non-destructive test. With using optimum process measures including feeding 2 m/t aluminium wire to deep-deoxidize before refining

feeding Ca-Si wire for end deoxidization

controlling type of inclusions in steel

adjusting slag series and optimizing structure of steel ingot mold etc. the defects at deposit cone of ingot reduce

the rejection rate of ingot is reduced to 6% from original 21% and the oxygen content in steel of ingot bottom decreases to 12 x 10

-6

from original 23 x 10

-6

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