摘要
对液态金属电磁成形的物理和数学模型进行了分析 ,提出了双频电磁成形的方法 (利用两种频率的电磁场实现固态金属无接触加热熔化和熔化后的金属无模壳电磁成形 )和原理。在分析液态金属电磁成形理论模型的基础上确认 :作用在液态金属表面的电磁压力和加热密度主要取决于其表面上磁场的大小以及磁场在液态金属中的分布规律。最后分析了复杂形状液态金属电磁成形数值计算中存在的难点和解决方法。
Different mathematics and physical models for analyzing the electromagnetic shaping of liquid metal were reviewed. On the basis of the theory of electromagnetic shaping, the concept of dual frequency electromagnetic shaping of liquid metal was presented, which mean that the one frequency electromagnetic field is used to melt the solid metal above its melt temperature and the other frequency electromagnetic field is used to make the liquid metal to a final shape. The electromagnetic pressure produced by the counteract of magnetic field in coil and the eddy current in liquid metal is mainly determined by the magnetic flux density on the surface and its dissipation in the liquid metal. At last, some problems for electromagnetic shaping complex shapes were discussed and the methods for solving these problems were proposed.
出处
《钢铁研究学报》
CAS
CSCD
北大核心
2000年第3期5-9,共5页
Journal of Iron and Steel Research
基金
国家自然科学基金资助项目!(59995440)
航空基金资助项目!(97H530 99)
关键词
液态金属
电磁成形
双频
电磁压力
理论模型
liquid metal
electromagnetic shaping
dual frequency
electromagnetic pressure
theoretical model
