Patent ID: 11945033
Assignee: VACUUMSCHMELZE GMBH & CO. KG
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC B  H  C | IPC B  C  H

Claim 0:
1. A method for heat treating an object, the method comprising the following:
providing a lower box comprising a base, walls that surround the base, and an open side,
providing an upper box comprising a cover, walls that surround the cover and an open side,
arranging one or more objects on the base of the lower box, the one or more objects including at least one of Sm, Dy, Er, Eu, and Yb, and the lower box and/or the upper box comprising iron foil and/or an iron plate,
arranging an external source of the at least one of Sm, Dy, Er, Eu, and Yb within the lower box and/or the upper box, the external source being provided by an alloy of iron and the at least one of Sm, Dy, Er, Eu, and Yb,
covering the one or more objects with the upper box such that the open side of the upper box faces the base of the lower box, the walls of the upper box are arranged on the base of the lower box and a gap is formed between the walls of the upper box and the walls of the lower box,
introducing a powder material into the gap in order to form an assembly having an interior, the powder material providing a mechanical obstacle to gas exchange between the interior and an environment outside of the interior of the assembly, and
heat treating the assembly.