Processing

Please wait...

Settings

Settings

1. WO2000040360 - METHOD OF PRODUCING SINTERED BODIES OF METALLIC FIBER, AND METALLIC NONWOVEN FABRIC SINTERED SHEET

Publication Number WO/2000/040360
Publication Date 13.07.2000
International Application No. PCT/JP1999/007306
International Filing Date 27.12.1999
Chapter 2 Demand Filed 22.06.2000
IPC
B22F 3/00 2006.01
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
B22F 7/00 2006.01
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
7Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting
CPC
B22F 3/002
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
002Manufacture of articles essentially made from metallic fibres
B22F 7/002
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
7Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting ; wherein at least one part is obtained by sintering or compression
002of porous nature
Applicants
  • BRIDGESTONE CORPORATION [JP/JP]; 10-1, Kyobashi 1-chome Chuo-ku Tokyo 104-0031, JP (AllExceptUS)
  • AOIKE, Yukio [JP/JP]; JP (UsOnly)
  • MIYASHITA, Morihiro [JP/JP]; JP (UsOnly)
Inventors
  • AOIKE, Yukio; JP
  • MIYASHITA, Morihiro; JP
Agents
  • HONDA, Ichiro; No.201, Kanda Chuo Building 2nd Floor 5-7, Nishikanda 2-chome Chiyoda-ku Tokyo 101-0065, JP
Priority Data
10/37301428.12.1998JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) METHOD OF PRODUCING SINTERED BODIES OF METALLIC FIBER, AND METALLIC NONWOVEN FABRIC SINTERED SHEET
(FR) FABRICATION D'ELEMENTS FRITTES EN FIBRE METALLIQUE, ET FEUILLE FRITTEE EN TISSU METALLIQUE NON TISSE
Abstract
(EN)
A method of producing sintered bodies of metallic fiber, including a preparatory compressing step for compressing a nonwoven fabric of metallic fiber between smooth pressing surfaces to smooth the surface prior to a heating and sintering step, and a metallic fiber nonwoven fabric sintered sheet having an overall thickness of less than 1 mm, including a main layer and at least one auxiliary layer laminated on the main layer and integrally sintered, wherein the main layer is made of metallic fiber 1 - 10 $g(m)m in thickness and has a void ratio of 80 % or above, while the auxiliary layer is made of metallic fiber not less than twice as thick as the metallic fiber of the main layer, the total thickness of the auxiliary layer being less than 2.5 times the thickness of the main layer, the overall void ratio of the main and auxiliary layers is between 75 % and 90 %. The present method is superior in operability and cost, and the present sheet has less pressure loss and sufficient mechanical strength, and establishes compatibility between reduction in the size of a filter for removing solid foreign matter and bubbles from a low-viscosity liquid and reduction in the filtration resistance.
(FR)
Cette invention concerne un procédé de fabrication d'éléments frittés en fibre métallique, dont une opération préalable de compression consistant à comprimer un tissu non tissé en fibre métallique entre des surfaces lisses de manière à lisser la surface avant chauffage et frittage. L'invention concerne également une feuille frittée en tissu non tissé de fibre métallique d'une épaisseur totale inférieure à 1 mm. Cette feuille comprend une couche principale et au moins une couche auxiliaire laminée sur la couche principale et entièrement frittée. La couche principale est constituée par une fibre métallique d'une épaisseur comprise entre 1 et 10 $g(m)m et un indice de vide d'au moins 80 % alors que la couche auxiliaire est faite d'une fibre métallique dont l'épaisseur est au moins deux fois plus épaisse que la fibre métallique de la couche principale, l'épaisseur totale de la couche auxiliaire étant inférieure à deux foies et demie l'épaisseur de la couche principale, pour un indice de vide global des couches principale et auxiliaire se situant de l'ordre de 75 à 90 %. Ce procédé de fabrication se distingue par sa facilité de mise en oeuvre et son coût. La feuille selon l'invention se caractérise par une moindre perte de pression et une résistance mécanique suffisante, et réalise un équilibre entre taille réduite pour un filtre pour particule solides et bulles dans un liquide à faible indice de viscosité d'une part et diminution de la résistance au filtrage d'autre part.
Latest bibliographic data on file with the International Bureau