Hot-pressed magnets in open-air presses.

摘要

This invention describes a practice for the hot-pressing and/or hot working of rare earth element-containing alloy powders (52) using open-to-the-air presses (10;100). The rare earth-containing powder (52) is pressed into a compact body (34) at ambient temperatures using a solid lubricant only on the die wall. This compact body (34) is then hot-pressed in an open-air press (100) utilizing a heated die (114) flooded with argon (130). <IMAGE> <IMAGE> <IMAGE>