Analysis on Defects of Casting Billet of 0.45C Steel Bearing Sulfur and Process Optimization

林鹏; 张洪才; 印传磊; 许光乐

您当前的位置：

首页 >

文章列表页 >

Analysis on Defects of Casting Billet of 0.45C Steel Bearing Sulfur and Process Optimization

更新时间：2026-01-21

- Analysis on Defects of Casting Billet of 0.45C Steel Bearing Sulfur and Process Optimization
- Special Steel Vol. 39, Issue 5, Pages: 40-43(2018)
- 作者机构：
  
  江苏沙钢集团淮钢特钢股份有限公司技术中心,淮安,223002
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：23 April 2018，
  
  Online First：30 May 2022，
  
  Published：30 May 2018
- 稿件说明：
移动端阅览
林鹏, 张洪才, 印传磊, et al. Analysis on Defects of Casting Billet of 0.45C Steel Bearing Sulfur and Process Optimization[J]. Special Steel, 2018, 39(5): 40-43.
DOI：

林鹏, 张洪才, 印传磊, et al. Analysis on Defects of Casting Billet of 0.45C Steel Bearing Sulfur and Process Optimization[J]. Special Steel, 2018, 39(5): 40-43. DOI：

摘要

含硫45钢(/%:0.42～0.50C

0.17～0.37Si

0.50～0.80Mn

≤0.035P

0.035～0.045S)的Φ44 mm轧材探伤合格率低

轧材表面存在裂纹缺陷

通过分析是由150 mm×150 mm铸坯缺陷导致的。对铸坯表面酸洗发现裂纹缺陷

采用金相显微镜对裂纹进行分析。分析认为是由结晶器铜管R角太小、角部冷却太强、保护渣熔化不好、传热和润滑效果差以及二次冷却不均匀导致的。通过对结晶器铜管、保护渣及二次冷却水量进行工艺优化

改善结晶器冷却传热和二冷段喷淋冷却效果

提高铸坯冷却均匀性

使得铸坯缺陷明显改善

轧材合格率大幅提高。

Abstract

Facing the quality problems of low pass rate and crack defects on the surface of the Φ44 mm metal rolling 45 with sulfur(/% ：0.42 ~ 0. 50C

0.17 ~ 0. 37Si

0. 50 ~ 0. 80Mn

≤ 0.035P

0. 035 ~ 0. 045S)

the analysis is that the defects are caused by defects in the 150 mm x 150 mm casting billet. The crack defects are found on the surface of the slab and analyzed by metallographic microscope. The result indicates that the defect is caused by the strong cooling of the small R of crystallizer copper tube and the poor heat transfer and lubrication effect of the shielding flux and the asymmetrical secondary cooling. The process optimization of the crystallizer copper tube and the shielding flux and the second cooling is carried out. It improves the cooling heat transfer of the mold and the cooling effect of the secondary cooling section and the cooling uniformity of casting billet. The result shows the defects of casting billet have been effective controlled and the qualified rate of rolled material has been greatly improved.

关键词

Keywords

references

Views

下载量

CSCD

CNKI被引量

Alert me when the article has been cited

提交

Tools

Publicity Resources

Finite Element Simulation on Decarburization of Concasting Billet of High Carbon Steel during Reheating

Model for Changing of MnO Content in Mold Flux during Concasting

Cause Analysis on Surface Crack of Drill Steel 55SiMnMo Rolling Product and Process Improvement

Effect of Casting Slab Defect on Cold Draw Quality of SWRH82B Steel Wire Coil

Research and Development of Steel T27 for Railway

Related Author

黄灿

杭乃勤

张细菊

刘丹

熊建良

董素梅

欧阳标

王新月

Related Institution

武汉科技大学材料与冶金学院

武汉钢铁(集团)公司

北京科技大学冶金与生态工程学院

(石钢京诚装备技术有限公司，)

内蒙古科技大学材料与冶金学院

⁰