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Chinese Physics B 2014年第11期23卷 129-135页

作者：董曦曦何良菊弭光宝李培杰 National Center of Novel Materials for International Research Tsinghua University Department of Mechanical Engineering Tsinghua University School of Aerospace Tsinghua University State Key Laboratory of Tribology Tsinghua University

The finite dissolution model of silicon particles in the aluminum melt is built and calculated by the finite difference method, and the lower dissolution limit of silicon particles in the aluminum melt is proposed and verified by experiments, which could be the origin of microinhomogeneity in aluminum-silicon melts. When the effects of curvature and interface reaction on dissolution are not considered; the dissolution rate first decreases and later increases with time. When the effects of curvature and interface reaction on dissolution are considered, the dissolution rate first decreases and later increases when the interface reaction coefficient （k） is larger than 10 1, and the dissolution rate first decreases and later tends to be constant when k is smaller than 10-3. The dissolution is controlled by both diffusion and interface reaction when k is larger than 10-3, while the dissolution is controlled only by the interface reaction when k is smaller than 10-4.

关键词： silicon particle aluminum melt lower dissolution limit finite dissolution model

REMOVE INCLUSIONS FROM aluminum melt INELECTROMAGNETIC FIELD

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Acta Metallurgica Sinica(English Letters) 2000年第5期13卷 1068-1074页

作者： T.X.Li Z.M.Xu B.D.Sun D.Shu Y.H.Zhou School of Materials Science and Engineering Shanghai Jiao Tong UniversityShanghai 200030China

Electromagnetic separation of non-metallic inclusions from Al-Si melt is studied by theoretical analysis and experiments on self-designed electromagnetic separation apparatus. Metallographs and LECO Image Analysis System were used to analyze the content of alumina in aluminum alloy before and after electromagnetic separation. It is seen that removal effciency increases with the increase of electromagnetic force (EMF) and diameter of inclusion particles while decreases with the increase of melt velocity and height of separator. All alumina particles with diamete of 14μm have been removed successfully from the melt.

关键词： aluminum melt alumina particle electromagnetic separation removal efficiency

Heredity of aluminum melt Caused by Electric Pulse Modification (Ⅰ)

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Journal of Iron and Steel Research International 2007年第4期14卷 75-78页

作者： WANG Jian-zhong QI Jin-gang DU Hui-ling ZHANG Zhen-bin Department of Material and Chemical Engineering Liaoning University of Technology Jinzhou 121001 Liaoning China School of Metallurgical and Ecological Engineering University of Science and Technology Beijing Beijing 100083 China

The heredity of aluminum melt under the action of pulse electric field was investigated by means of the remelt experiment. A new hereditary criterion under this condition was proposed; in the meantime, the differentia... 详细信息

关键词： electric pulse modification aluminum melt heredity DSC cluster

Current Status and Application of Ceramic Foam Filter for aluminum melt

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China's Refractories 2010年第2期19卷 30-37页

作者： JI Shujun GUO Xueyi DONG Jianxiong SU Peng School of Metallurgical Science and Engineering Central South University Changsha 410083 China Baotou aluminum Co. Ltd. Baotou 014046 China

The importance of purification for aluminum and aluminum alloy casting was outlined. By comparing ceramic foam filters （CFF） in China and overseas, the existing problems and challenges of China＇ s CFF for aluminum were given. Measures to improve the performance of CFF were put forward based on material, preparation process, utility evaluation, etc.

关键词： aluminum melt Inclusion Purification Ceramic foam filter

Application and study in aluminum melt degassing technologies

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China Foundry 2004年第S1期1卷 7-13页

作者： H.J.Ni M.Y.Huang Y.Zhu P.Liao R.Z.WU B.D.Sun Department of Mechanical Engineering Nantong Institute of TechnologyNantong 226007JingsuP.R.China School of Material Science and Engineering Shanghai Jiaotong UniversityShanghai 200030P.R.China

The classification, characteristics and current situation of aluminum melt hydrogen-removal methods and technologies have been summarized. The latest studies and research results of aluminum melt degassing technology ... 详细信息

关键词： aluminum melt degassing purification

THEORETICAL ANALYSIS FOR THE MOTION AND TEMPERATURE OF melt DROPLETS IN SPRAY DEGASSING PROCESS

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Acta Metallurgica Sinica(English Letters) 2007年第3期20卷 193-198页

作者： R.Z. Wu Z.K. Qu B.D. Sun D. Shu J. Wang College of Materials Science ＆ Chemical Engineering Harbin Engineering University Harbin 150001 China State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong University Shanghai 200030 China Department of Chemistry Harbin Normal University Harbin 150025 China

The motion of melt droplets in spray degassing process was analyzed theoretically. The height of the treatment tank in spray degassing process couM be determined by the results of theoretical calculation of motion of melt droplets. To know whether the melt droplets wouM solidify during spraying process, the balance temperature of melt droplets was also theoretically analyzed. Then proof experiments for theoretical results about temperature of melt droplets were carried. In comparison, the experimental results were nearly similar to the calculation results,

关键词： spray degassing hydrogen removal aluminum melt motion temperature