Application of Dynamic Soft Reduction Technology in Process of Concasting Bloom of Bearing Steel GCr15

田新中; 朱荣; 祭程; 朱苗勇; 李智峥

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Application of Dynamic Soft Reduction Technology in Process of Concasting Bloom of Bearing Steel GCr15

更新时间：2026-01-21

- Application of Dynamic Soft Reduction Technology in Process of Concasting Bloom of Bearing Steel GCr15
- Special Steel Vol. 31, Issue 6, Pages: 26-27(2010)
- 作者机构：
  
  1. 北京科技大学冶金与生态工程学院,北京,100083
  2. 邢台钢铁有限责任公司,邢台,054027
  3. 东北大学材料与冶金学院,沈阳,110004
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：23 March 2010，
  
  Online First：27 October 2022，
  
  Published：27 October 2010
- 稿件说明：
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田新中, 朱荣, 祭程, et al. Application of Dynamic Soft Reduction Technology in Process of Concasting Bloom of Bearing Steel GCr15[J]. Special Steel, 2010, 31(6): 26-27.
DOI：

田新中, 朱荣, 祭程, et al. Application of Dynamic Soft Reduction Technology in Process of Concasting Bloom of Bearing Steel GCr15[J]. Special Steel, 2010, 31(6): 26-27. DOI：

摘要

介绍了动态轻压下技术(轻压下区域铸坯固相率40%～96%

总压下量8.3～12.5mm)在邢台钢铁公司285 mm×325 mm连铸机生产GCr15轴承钢连铸坯的应用。结果表明

当钢水过热度20～30℃

拉速0.65～0.75m/min

实施动态轻压下后

中心疏松评级≤1.5级和中心缩孔0～1.5级的比例分别由未压下的49.45%和63.74%增加到了85.0%和87.5%;碳偏析值范围由未压下的0.875～1.390变为0.872～1.086;中心偏析和V型偏析明显改善。

Abstract

The application of dynamic soft reduction technology ( solid-phase ratio of bloom in soft reduction region- 40% ~96%

total reduction- 8. 3 ~ 12. 5 mm) in process of production for 285 mm X 325 mm bloom of bearing steel GCrl5 at Xingtai Steel is presented. Results show that with molten steel superheating 20 ~ 30 °C

casting speed 0. 65 〜0. 75 m/min

after implementing dynamic soft reduction the percentage of rating ≤1. 5 for center porosity and rating 0 ~ 1. 5 for center line shrinkage increase respectively from original without implementing soft reduction 49. 45% and 63. 74% to 85. 0% and 87. 5%

the carbon segregation index decreases from 0. 875 〜1.390 to 0. 872 ~ 1. 086

and the center segregation and V-shape segregation improve obviously.

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