论文部分内容阅读
通过使用ansoft软件对筒形薄壁件在不同励磁电流的行波磁场作用下的电磁力进行了分析,进一步研究了行波磁场的励磁电流对合金充型能力以及铸件外表面缩陷的影响。结果发现:行波磁场影响合金充型能力的同时也影响了铸件凝固表面质量;随着励磁电流强度的增加,合金充型能力成平方倍的提高,同时也成平方倍的增加了铸件表面缩陷发生的几率;相同励磁电流强度下,励磁电流频率对合金充型能力存在最优值;励磁电流频率在1000 Hz以下变化时,随着励磁电流频率的降低铸件表面缩陷发生的可能性不断减小。
The electromagnetic forces of cylindrical thin-walled parts under the action of traveling wave magnetic field of different exciting currents were analyzed by using ansoft software. The influence of the exciting current of the traveling-wave magnetic field on the filling ability of the alloy and the shrinkage of the outer surface of the castings was further studied. The results show that the traveling wave magnetic field affects the filling ability of the alloy and also affects the solidification surface quality of the casting. With the increase of the exciting current intensity, the filling capacity of the alloy increases by a factor of 2, and the square of the casting surface shrinkage also increases Under the same excitation current intensity, the exciting current frequency has the best value for the filling ability of the alloy. When the exciting current frequency changes below 1000 Hz, the possibility of the surface shrinkage of the casting surface will continue with the decreasing of the exciting current frequency Decrease