Patent · US Expired

Mouldable material and method for producing a weakly magnetic composite material therewith

US6706206B1 · kind B1 · utility

4Cited by

7References

13Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Wilfried Aichele · Winnenden, DE
Hans-Peter Koch · Stuttgart, DE
Andreas Harzer · Schwieberdingen, DE
Torsten Bober · Renningen, DE

Key dates

Filing date	Sep 7, 2001
Grant date	Mar 16, 2004
Priority date	—
Expiry date	Sep 7, 2021

Classification

Technology area (CPC H)Electricity
CPC primaryH01F1/26
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A compression-molding material, in particular for producing a magnetically soft composite, including a raw powder exhibiting magnetically soft properties, a thermoplastic compound, and a lubricant. The lubricant is especially stearic acid. The compression-molding material is used to produce a magnetically soft composite, whose manufacture includes the method steps of preparation of the compression-molding material, molding of the compression-molding material at a temperature below the melting point of the thermoplastic compound, first thermal treatment of the molded compression-molding material at a temperature below the melting point of the thermoplastic compound, and second thermal treatment of the molded compression-molding material at a temperature above the melting point of the thermoplastic compound. The magnetically soft composite is suitable for manufacturing heat-deformation-resistant, corrosion-resistant, and fuel-resistant, magnetically soft components for high-speed controllers and actuators.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.