|
摘要：
|
|
将电磁成形技术用于粉末材料致密,利用螺线管线圈对铜粉进行了致密试验。分析了放电电压、致密次数、加热温度等因素对压坯致密度的影响。试验结果表明增加放电电压、多次放电、对粉末进行预热,均能提高压坯的平均致密度。在压坯轴向上距离中心越远的位置致密度越低,在径向上距离中心越远的位置致密度越高。
|
|
Electromagnetic forming is applied to the powder material compaction,and Cu powder is compacted with solenoid coil.The effects of the discharge voltage,compacting times and temperature on the relative densities of the compacted specimens are analyzed.The experimental results indicate that the relative density increases when improving the discharge voltage,increasing the discharge times and heating up the powder before compaction.To the points on the axis of the specimens,the farther they are to the center,the lower their relative densities are.And to the points in the radial direction,the farther they are to the center,the higher their relative densities are.
|
|
基金项目：
|
|
|
|
作者简介：
|
|
|
|
参考文献：
|
[1]肖志瑜,陈平,李元元.粉末冶金高致密化的新途径[J].材料导报,2003,(11):5 8.
[2]Bhanu Chelluri,John P Barber.Full-density net-shape powderconsolidation using dynamic magnetic pulse presume[J].JOM,1997,(7):36 37.
[3]Jak Michael J G,Ooms Frans G B,et al.Dynamically compac-ted all-ceramic lithium-ion batteries[J].Journal of PowerSources,1999,80(1 2):83 89.
[4]Ivanov V,Kotov Y A,et al.Synthesis and dynamic compac-tion of ceramic nano powders by techniques based on electricpulsed power[J].Nanostructured Materials,1995,6(14):287 290.
[5]薛强.粉末磁脉冲致密工艺试验研究[D].哈尔滨:哈尔滨工业大学,2005.
[6]邱大胜.电磁粉末压实试验研究[D].哈尔滨:哈尔滨工业大学,2003.
[7]黄尚宇,常志华,田贞武,等.粉末低电压电磁压制试验研究[J].塑性工程学报,2001,8(3):10 13.
[8]于海平.管坯电磁缩径成形磁压力研究[D].哈尔滨:哈尔滨工业大学,2002.
|
|
服务与反馈：
|
|
【文章下载】【加入收藏】
|
|
|
|
