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New Technology for Optimizing Melting Pool and Regulating Grain Formation in Laser Surface Remelting of Single Crystal Superalloys金国College of Material Science and Chemical Engineering,Harbin Engineering University摘 要:<正>Nickel-base superalloys are materials of choice for manufacturing hot-section components in gas turbines due to their superior......
Effect of TiO2 on the viscosity and structure of low-fluoride slag used for electroslag remelting of Ti-containing steelsCheng-bin Shi1,Ding-li Zheng1,Seung-ho Shin2,Jing Li1,Jung-wook Cho21. State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing2. Graduate Institute of Ferrous Technology, Pohang University of Science and Technology摘 要: 电渣重熔过程中的电磁场和Joule热分析王芳1,李宝宽1(1.辽宁省沈阳市东北大学材料与冶金学院)摘 要:以电渣重熔工艺中电极,渣池和钢锭为研究对象,建立了能够考虑集肤效应的三维谐波电磁场有限元模型,采用Maxwell方程,Lorentz定律和Joule定律分析了渣,钢锭和电极的磁场,电磁力,电流密度和Joule热功率密度的分布.模拟结果与测量的电渣重熔系统外部空气的磁感应强度吻合良好,证明了本模型和计算过程的可靠性.计算结果表明:在电极和钢锭内,电流主要集中在外表面,电流沿轴向方向;在渣池内,由于渣的电导率低......电渣重熔过程中的电磁场和Joule热分析
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来源: 《金属学报2010年第7期》——王芳 李宝宽
Fluoride evaporation and crystallization behavior of CaF2–CaO–Al2O3–(TiO2) slag for electroslag remelting of Ti-containing steelsCheng-bin Shi1,Jung-wook Cho2,Ding-li Zheng1,Jing Li11. State Key...="ChDivSummary">To elucidate the behavior of slag films in an electroslag remelting process, the fluoride evaporation and crystallization of CaF2–CaO–Al2O3–(TiO2) slags were studied using the single hot......
evolution of magnesium alloy AZ91D prepared by electric current pulse discharge during partial remelting ZHOU Quan, YANG Yuan-sheng, TANG Jun-li, HU Zhuang-qi (Institute of Metal Research, Chinese... (LVECP) technique. The microstructure evolution of magnesium alloy AZ91D prepared by LVECP during partial remelting, and the effects of heating temperature and holding time on the partial remelted......
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; 文献标志码:A Effect of remelting process on microstructure of semi-solid ZCuSn10 copper alloy fabricated by strain induced... (SIMA) method including the forging and remelting process. The effect of remelting temperature and holding time on the microstructure of semi-solid ZCuSn10 copper alloy was investigated. The results......
真空自耗电弧熔炼中电磁搅拌的数值模拟 王斌斌1,寇宏超1,胡锐1,周廉1,王锦程1,李金山1,常辉1 (1.西北工业大学凝固技术国家重点实验室,陕西,西安,710072) 摘要:利用ANSYS软件对真空白耗电弧熔炼的电磁搅拌过程进行三维模拟计算,分析重熔电流,磁场和洛伦兹力的分布情况,讨论了搅拌线圈对磁场和搅拌力的影响.结果表明:重熔电流从坩埚擘经熔池表面流回电极,铸锭和坩埚底部几乎没有电流;重熔电流产生环绕对称轴的磁场,磁场强度从电极中心到坩埚外壁呈先增大后减小的趋势;搅拌线圈产生平行于对称轴的磁场,其磁感应强度在铸锭部分呈均匀分布;施加搅拌线圈产生了使熔池发生旋转的洛伦兹力. 关键词:真空自耗; 电磁搅拌; 数值模拟; ANSYS; 洛伦兹力; vacuum arc remelting (VAR); electromagnetic stirring; numerical......
–SiO2 slag, a candidate slag used for the EoL superalloy remelting process, were measured using gas/slag/metal equilibrium experiments. These activity coefficients were then used to consider the recycling efficiency of nickel and cobalt by remelting EoL superalloys using CaO–Al2O3–SiO2 slag. The activity coefficients of NiO and CoO in CaO–Al2O3–SiO2 slag both show a positive deviation from Raoult’s......