Title:
LAMINATED CORE HAVING A SOFT MAGNETIC MATERIAL AND METHOD FOR JOINING CORE SHEETS IN A BONDED MANNER TO FORM A SOFT-MAGNETIC LAMINATED CORE
Document Type and Number:
WIPO Patent Application WO/2010/109272
Kind Code:
A3
Abstract:
The invention relates to a laminated core (1) having a soft magnetic material (3) and to a method for joining core sheets (4) in a bonded manner to form a soft-magnetic laminated core (1). The laminated core (1) comprises core sheets (4) made of soft-magnetic plates (5), which form a core sheet stack (6). The core sheet stack (6) comprises intermediate layers (7) between the core sheets (4). The intermediate layers (7) comprise a cured adhesive (8) introduced into intermediate spaces between the core sheets (4) in the state of low viscosity. For this purpose, the core sheets (4) comprise a finally annealed crystalline CoFe alloy, an adhesive-wettable top side (9), and an adhesive-wettable bottom side (10). The core sheets (4) form a dimensionally accurate laminated core (1) with the intermediate layers (7). The laminated core (1) has a substantially adhesive-free contour (12) made of outline surfaces (11) of the core sheets (4). The adhesive (8) is solvent-free in the state of low viscosity.
Inventors:
GERSTER JOACHIM (DE)
PIEPER WITOLD (DE)
STAUBACH HARALD (DE)
FACKELMANN DOMINIK (DE)
PIEPER WITOLD (DE)
STAUBACH HARALD (DE)
FACKELMANN DOMINIK (DE)
Application Number:
PCT/IB2009/051264
Publication Date:
August 04, 2011
Filing Date:
March 26, 2009
Export Citation:
Assignee:
VACUUMSCHMELZE GMBH & CO KG (SG)
GERSTER JOACHIM (DE)
PIEPER WITOLD (DE)
STAUBACH HARALD (DE)
FACKELMANN DOMINIK (DE)
GERSTER JOACHIM (DE)
PIEPER WITOLD (DE)
STAUBACH HARALD (DE)
FACKELMANN DOMINIK (DE)
International Classes:
H01F3/02; H01F27/245; H02K15/12
Domestic Patent References:
| WO2007009442A2 | 2007-01-25 |
Foreign References:
| US5534565A | 1996-07-09 | |||
| DE2720531A1 | 1977-11-24 |
Attorney, Agent or Firm:
SCHWEIGER, Martin et al. (251B Victoria Street, Singapore 5, SG)
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