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1. 发明授权

US4265680A Method for making hollow magnetic pipe 失效
标题翻译：中空磁管制作方法
公开(公告)号：US4265680A
公开(公告)日：1981-05-05
申请号：US128761
申请日：1980-03-10
申请人： Robert J. Pelser , Lewis M. Pelser , Robert W. Hill , Sanford W. Brown , Robert G. Fischer
发明人： Robert J. Pelser , Lewis M. Pelser , Robert W. Hill , Sanford W. Brown , Robert G. Fischer
IPC分类号： H01F41/02 , H01F1/02
CPC分类号： H01F41/028
摘要： Hollow magnetic pipe having a magnetic field extending across the hollow of the pipe is prepared by a multistep process which includes (a) forming first and second pipe halves from ductile and magnetizable sheet metal, (b) placing the pipe halves in pipelike alignment and joining each pair of adjacently disposed, opened edges thereof with a nonmagnetic seam to form a hollow pipe, (c) conditioning the hollow pipe to receive and maintain a permanent magnetic state, and (d) subjecting the conditioned hollow pipe to a magnetic field whereby the side walls abutting one nonmagnetic seam acquire a permanent north magnetic pole configuration and the side walls abutting the other nonmagnetic seam acquire a permanent south magnetic pole configuration. The hollow magnetic pipe is adapted for use as a conduit for conveying conductive fluid in magnetohydrodynamic energy amplification systems.
摘要翻译：通过多步法制备具有延伸穿过管的中空的磁场的中空磁管，其包括（a）从延性和可磁化的金属板形成第一和第二半管，（b）将管半部分配置成管状对准和接合每对相邻设置的开口边缘具有非磁性接缝以形成中空管，（c）调节中空管以接收和保持永久磁状态，以及（d）使经调节的中空管受到磁场，由此邻接一个非磁性接缝的侧壁获得永久的北极磁极配置，并且邻接另一个非磁性接缝的侧壁获得永久的南极磁极配置。中空磁性管适用于在磁流体动力学能量放大系统中用作输送导电流体的导管。

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