间歇式变向复合电磁搅拌作用下60Si2CrVAT钢的凝固组织

钢铁, 2007, 42(11): 27-0.

间歇式变向复合电磁搅拌作用下60Si2CrVAT钢的凝固组织

杜卫东 , 王凯 , 蒋明伟 , 翟启杰 , 赵沛

1.1. 上海大学材料科学与工程学院，上海 200072；2. 宝山钢铁股份有限公司特殊钢分公司，上海 200940；3. 钢铁研究总院，北京 100081

1.1. School of Material Science and Engineering, Shanghai University, Shanghai 200072, China

2. 2. Special Steel Branch, Baoshan Iron and Steel Co., Ltd., Shanghai 200940, China

3. 3. Central Iron and Steel Research Institute, Beijing 100081, China

关键词：间歇式变向;复合电磁搅拌;60Si2CrVAT弹簧钢;凝固组织

Solidification Structure of 60Si2CrVAT Spring Steel Blooms Cast With Intermittently Reversing Direction Complex ElectroMagnetic Stirring

DU Weidong , WANG Kai , JANG Mingwei , ZHAI Qijie , ZHAO Pei

Keywords： intermittently reversing direction;complex electromagnetic stirring;60Si2CrVAT spring steel;solidification structure

研究了间歇式变向复合电磁搅拌作用下60Si2CrVAT弹簧钢连铸坯的凝固组织。结果表明，间歇式变向复合电磁搅拌工艺可以显著减少60Si2CrVAT弹簧钢铸坯断面中心疏松和缩孔，提高铸坯凝固组织的致密度。铸坯中二次枝晶臂间距为30～250 μm，中心等轴区由铸坯断面面积的19.6%增加到25%，铸坯内部质量得到了极大的改善。

The effect of complex electromagnetic stirring on solidification structure of spring steel 60Si2CrVAT blooms was investigated.The results revealed that, with electromagnetic stirring, center shrinkage cavity and porosity were significantly reduced. The spacing of secondary dendritic arms was in the range of 30250 μm,the percentage of equiaxed zone was increased from 19.6% to 25% and the quality of blooms was significantly improved.

参考文献

上一张下一张

计量

下载量()
访问量()

作者相关

文章评分

您的评分：
1

0%
2

0%
3

0%
4

0%
5

0%

材料期刊网