旋转磁场对铜镁合金凝固组织影响研究
毕业论文关键词：旋转磁场；磁场强度；搅拌时间
Effect of rotating magnetic field on Cu-Mg alloy solidification structure
Abstract In this paper,, you will see using the motor stator and voltage rheostat is made by a simple rotation of the magnetic field device, used to study the effect of rotating magnetic field on solidification microstructure of magnesium alloy of copper, processing parameters used are pouring temperature, rotation, magnetic field strength, the rotating magnetic field on solidification time .The result says, The effect of rotating magnetic field on Cu-Mg alloy is very significant. Especially the rotating time and the strength of rotating magnetic field. No matter when one of the variables is increasing, the other two are in consistent, its grain will be finer and its solidification will be larger. The best rotating magnetic field parameters are that magnetic stirring voltage is 200V magnetic stirring time is 13 seconds.
Key words: rotating magnetic field; magnetic field intensity; mixing time
目录
1.前言 .. 1
1.1 旋转磁场简介 .. 1
1.2 旋转磁场产生原理 1
1.3 旋转磁场的作用机理 .. 2
1.4 旋转磁场对不同金属凝固组织的性能和晶粒影响 .. 2
1.4.1旋转磁场对锡-铋合金凝固组织的影响 2
1.4.2旋转磁场对铅-铋合金凝固组织性能和晶粒的影响 . 3
1.4.3旋转磁场对铝-铜合金凝固组织的影响 3
1.5 电磁搅拌装置分类 4
1.5.1电磁搅拌装置的分类 .. 4
1.5.2电磁搅拌装置的工作原理 4
1.6 高铁用接触线的种类和特点 .. 5
1.7 高铁用接触线的生产工艺 5
1.8.选题的目的和意义 . 7
1.9课题的研究内容和目标 .. 8
1.9.1 研究内容 8
1.9.2研究目标 . 8
2.实验 .. 9
2.1试验材料 .. 9
2.2试验方案 .. 9
2.2.2浇注温度对铜镁合金凝固组织和性能的影响 . 9
2.2.3磁场强度对铜镁合金凝固组织和性能的影响 .. 10
2.2.4磁场搅拌时间对铜镁合金凝固组织和性能的影响 10
2.3试验设备 10
2.4实验过程 12
2.4.1 浇注过程 . 12
2.4.2试样的切割 . 13
2.4.3试样的研磨 . 13
2.4.4试样的浸蚀 . 13
2.4.5金相显微观察 13
2.4.6 硬度测定 . 13
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