| 抽锭电渣重熔718塑料模具钢板坯锭的新工艺 |
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| 引用本文： | 臧喜民,邓鑫,李万明,姜周华,耿鑫.抽锭电渣重熔718塑料模具钢板坯锭的新工艺[J].材料与冶金学报,2016(1). |
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| 作者姓名： | 臧喜民 邓鑫 李万明 姜周华 耿鑫 |
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| 作者单位： | 1. 辽宁科技大学 材料与冶金学院,辽宁 鞍山,114051;2. 辽宁科技大学 电子与信息工程学院,辽宁 鞍山,114051;3. 东北大学 冶金学院,沈阳,110004 |
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| 基金项目： | 国家自然科学基金资助项目(51474126，U1560203)，辽宁省创新团队资助项目(LT2015014) |
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| 摘 要： | 针对大型塑料模具毛坯电渣锭凝固过程中产生疏松和偏析等缺陷,从改变大型钢锭凝固条件角度出发,试图将大圆钢锭改为等截面面积的扁锭,同时采用双极串联供电控制渣池的温度场,以达到提高钢锭凝固质量的目的.本文介绍了采用双极串联、T型结晶器,抽锭电渣重熔工艺生产了0.32 m×2.0 m×4.0 m的718塑料模具钢板坯工业试验,重熔板坯锭的检验结果表明,板坯锭成分、低倍等凝固质量显著提高.
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| 关 键 词： | 抽锭电渣重熔 双极串联 模具钢718 板坯锭 凝固质量 |
A withdrawing new technology of electroslag remelting for die steel 718 slab ingot |
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| Zang Ximin,Deng Xin,Li Wanming,Jiang Zhouhua,Geng Xin.A withdrawing new technology of electroslag remelting for die steel 718 slab ingot[J].Journal of Materials and Metallurgy,2016(1). |
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| Authors: | Zang Ximin Deng Xin Li Wanming Jiang Zhouhua Geng Xin |
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| Abstract: | Large ingot solidification conditions such as section shape and power supply were changed to minimize the porosity and segregation of large 718 plastic mold ESR ingots. Round ingots were transformed to ingot slabs and the single-electrode power supply was replaced by a bifilar mode. Thus,the temperature distribution in the slag pool and molten pool were changed. These changes improved the quality of the solid ingot. Several 0. 32 m × 2. 0 m × 4. 0 m 718 ingot slabs were prepared by using the ESRW technology in an industrial plant. The melting rate of the ESRW ingot slab was nearly twice as high as the ESR round ingot,whereas the power consumption was lower than the average. The industrial tests showed that the authors ’ ingot has uniform chemical composition and dense macrostructure. |
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| Keywords: | electroslag remelting withdrawing bifilar mode die steel 718 slab ingot solidification quality |
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