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| 1 | 高槽满率绕组专用窄矩形截面电磁线拉拔均匀性研究显示文摘针对小型轻量化汽车驱动电机的高峰值扭矩和高持续功率要求,对槽满率电机绕组专用窄矩形截面电磁线拉拔成形过程中截面塑性变形均匀性控制进行研究,运用有限元软件对铜扁线拉拔过程进行了建模仿真,验证了多道次成形方案的可行性。研究结果表明:在特定的长宽比下圆角处变形程度远大于窄边处,窄边也大于宽边处,为了解决横截面金属塑性流动不均匀的问题,采用控制变量法,通过优化拉拔模的拔模角和定径带长度,并引入不均匀系数N表征坯料变形的均匀程度,最终获得截面变形较均匀的工艺参数与模具结构参数组合,为企业生产窄矩形截面铜扁线提供工艺参考。 | 王锦波 王冬艳 彭春斌 王成勇 金爱民 | 2021 | 模具工业2021，47，4： | 1 |
| 2 | Application of Ceramic Film as Means of Lubrication for Forming of TiSheet in a Highly Localized Deformation Process显示文摘Incremental forming is a novel die-less sheet forming process. There is a need for special means to retain lubricant at the tool/sheet interface during forming. To fulfill the stated aim, a porous ceramic film was developed on pure Tisubstrate, and it was done through an electrochemical depsition process known as plasma electrolytic oxidation. The film with preferred pore size could be realized after several attempts by varying the processing parameters. In order to characterize the film, a variety of tests including microstructure, film-substrate bond strength and tribological properties tests were conducted. On-job performance of the film was also examined by forming Ticomponents employing a range of forming conditions. It was found that the proposed method of lubrication was effective, and the plasma eletrolytic oxidation process can be employed to fabricate films on pure Tisheet to provide means of lubrication during incremental forming. | GHULAM Hussain ASIF Iqbal | 2014 | Journal of Wuhan University of Technology(Materials Science)2014，29，5： | 1 |
| 3 | 三层同轴电喷-去模板法制备核壳纳米颗粒用于蛋白质药物输送显示文摘分别以聚乙二醇(PEG)、聚(丙交酯-乙交酯)(PLGA)和牛血清白蛋白(BSA)为冠、壳和核层材料,采用三层同轴电喷技术制备得到微米颗粒.激光共聚焦显微镜(LSCM)显示,该方法制备得到的微米颗粒呈现核-壳-冠结构.通过脱去该微米颗粒的PEG冠层(模板),得到包载有BSA的纳米颗粒.研究发现,随着壳层PLGA溶液进样速度的减慢,去模板后纳米颗粒的粒径从约146 nm减小到68 nm.BSA在纳米颗粒中的包埋率可高达78.3%,并且其释放没有显著的药物暴释现象.圆二色谱结果表明,同轴电喷过程对BSA二级结构影响很小.因此,利用三层同轴电喷-去模板法可制备得到粒径可调控的蛋白质纳米载体系统,并且该过程中蛋白质的结构基本维持不变. | 曹丽华 王红军 涂克华 蒋宏亮 王利群 | 2014 | 高分子学报2014，24，9： | 0 |
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