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1. WO2002100580 - METHOD OF PREPARATION OF HIGH DENSITY SOFT MAGNETIC PRODUCTS

Publication Number WO/2002/100580
Publication Date 19.12.2002
International Application No. PCT/SE2002/001137
International Filing Date 12.06.2002
Chapter 2 Demand Filed 10.01.2003
IPC
B22F 3/087 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
3Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor
02Compacting only
087using high energy impulses, e.g. magnetic field impulses
C22C 33/02 2006.1
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
33Making ferrous alloys
02by powder metallurgy
H01F 1/22 2006.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
1Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
01of inorganic materials
03characterised by their coercivity
12of soft-magnetic materials
14metals or alloys
20in the form of particles, e.g. powder
22pressed, sintered, or bound together
CPC
B22F 3/087
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
3Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; ; Presses and furnaces
02Compacting only
087using high energy impulses, e.g. magnetic field impulses
C22C 33/02
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
33Making ferrous alloys
02by powder metallurgy
C22C 33/0271
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
33Making ferrous alloys
02by powder metallurgy
0257characterised by the range of the alloying elements
0264the maximum content of each alloying element not exceeding 5%
0271with only C, Mn, Si, P, S, As as alloying elements, e.g. carbon steel
H01F 1/12
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
1Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
01of inorganic materials
03characterised by their coercivity
12of soft-magnetic materials
H01F 1/22
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
1Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
01of inorganic materials
03characterised by their coercivity
12of soft-magnetic materials
14metals or alloys
20in the form of particles, e.g. powder
22pressed, sintered, or bound together
Applicants
  • HÖGANÄS AB [SE]/[SE] (AllExceptUS)
  • ANDERSSON, Ola [SE]/[SE] (UsOnly)
Inventors
  • ANDERSSON, Ola
Agents
  • AWAPATENT AB
Priority Data
0102103-913.06.2001SE
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) METHOD OF PREPARATION OF HIGH DENSITY SOFT MAGNETIC PRODUCTS
(FR) PROCEDE DE PREPARATION D'ARTICLES MAGNETIQUES DOUX A HAUTE DENSITE
Abstract
(EN) The invention concerns a method of preparing high density compacts for soft magnetic applications comprising the steps of subjecting an iron or iron-based soft magnetic powder the particles of which are electrically insulated to compaction in an uniaxial pressure operation with a ram speed of at least 2 m/s.
(FR) L'invention concerne un procédé de préparation de briquettes à haute densité destinées à des applications magnétiques douces. Ce procédé consiste à soumettre une poudre magnétique douce de fer ou à base de fer, dont les particules sont isolées électriquement, à une opération de compression à pression uniaxiale avec une vitesse de coulisseau d'au moins 2 m/s.
Related patent documents
IN1982/CHENP/2003This application is not viewable in PATENTSCOPE because the national phase entry has not been published yet or the national entry is issued from a country that does not share data with WIPO or there is a formatting issue or an unavailability of the application.
Latest bibliographic data on file with the International Bureau