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1. WO2006095417 - METHOD OF PRODUCING PARTICLES OF LOW MELTING POINT METAL AND APPARATUS THEREFOR

Publication Number WO/2006/095417
Publication Date 14.09.2006
International Application No. PCT/JP2005/004056
International Filing Date 09.03.2005
IPC
B23K 35/40 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
35Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
40Making wire or rods for soldering or welding
B22F 9/08 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
9Making metallic powder or suspensions thereof; Apparatus or devices specially adapted therefor
02using physical processes
06starting from liquid material
08by casting, e.g. through sieves or in water, by atomising or spraying
CPC
B22F 2009/0808
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
9Making metallic powder or suspensions thereof
02using physical processes
06starting from liquid material
08by casting, e.g. through sieves or in water, by atomising or spraying
0804Dispersion in or on liquid, other than with sieves
0808Mechanical dispersion of melt, e.g. by sieves
B22F 9/08
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
9Making metallic powder or suspensions thereof
02using physical processes
06starting from liquid material
08by casting, e.g. through sieves or in water, by atomising or spraying
B23K 35/0244
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
35Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
02characterised by mechanical features, e.g. shape
0222for use in soldering, brazing
0244Powders, particles or spheres; Preforms made therefrom
B23K 35/40
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
35Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
40Making wire or rods for soldering or welding
Applicants
  • 千住金属工業株式会社 SENJU METAL INDUSTRY CO., LTD. [JP]/[JP] (AllExceptUS)
  • 宮崎県 MIYAZAKI PREFECTURE [JP]/[JP] (AllExceptUS)
  • 鳥越 清 TORIGOE, Kiyoshi [JP]/[JP] (UsOnly)
  • 清水 正高 SHIMIZU, Masataka [JP]/[JP] (UsOnly)
  • 山本 建次 YAMAMOTO, Kenji [JP]/[JP] (UsOnly)
  • 溝添 光洋 MIZOZOE, Mitsuhiro [JP]/[JP] (UsOnly)
  • 高橋 宝四郎 TAKAHASHI, Hoshiro [JP]/[JP] (UsOnly)
  • 鈴木 知秀 SUZUKI, Tomohide [JP]/[JP] (UsOnly)
  • 村瀬 基泰 MURASE, Motohiro [JP]/[JP] (UsOnly)
Inventors
  • 鳥越 清 TORIGOE, Kiyoshi
  • 清水 正高 SHIMIZU, Masataka
  • 山本 建次 YAMAMOTO, Kenji
  • 溝添 光洋 MIZOZOE, Mitsuhiro
  • 高橋 宝四郎 TAKAHASHI, Hoshiro
  • 鈴木 知秀 SUZUKI, Tomohide
  • 村瀬 基泰 MURASE, Motohiro
Agents
  • 広瀬 章一 HIROSE, Shoichi
Priority Data
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) METHOD OF PRODUCING PARTICLES OF LOW MELTING POINT METAL AND APPARATUS THEREFOR
(FR) PROCÉDÉ DE PRODUCTION DE PARTICULES DE MÉTAL DE FAIBLE POINT DE FUSION ET APPAREIL POUR CELUI-CI
(JA) 低融点金属粒子の製造方法及びその装置
Abstract
(EN)
A method for producing particles of a low melting point metal, which comprises providing a mixture of a heat-resistant liquid having a continuous phase and molten metal particles and forcing said mixture to pass through a porous film, to thereby form metal particles having a prescribed particle diameter; and an apparatus for use in the above method which comprises a heating and dispersing mechanism, a cooling mechanism and, provided between them, a porous material in the form of a film, wherein a pressure vessel is connected to the heating and dispersing mechanism and a high pressure is applied to the heating and dispersing mechanism. Conventional low melting point metal particles for use in preparing a solder paste, which is a mixture of a flux and low melting point metal particles, have contained particles having various diameters, which has often resulted in the unsatisfactory packing of a solder paste using the above conventional metal particles into a fine hole of a mask for printing or applying onto a fine zone to be soldered or in the difficulty of separating the mask.
(FR)
Procédé servant à produire des particules d'un métal de faible point de fusion, lequel comprend les étapes consistant à obtenir un mélange d'un liquide résistant à la chaleur ayant une phase continue et de particules de métal fondu et à forcer ledit mélange à passer à travers un film poreux, pour de cette manière former des particules de métal ayant un diamètre des particules déterminé ; et appareil destiné à être utilisé dans le procédé ci-dessus, lequel comprend un mécanisme de chauffage et de dispersion, un mécanisme de refroidissement et, disposée entre ceux-ci, une matière poreuse sous la forme d'un film, une cuve sous pression étant raccordée au mécanisme de chauffage et de dispersion et une pression élevée étant appliquée au mécanisme de chauffage et de dispersion. Les particules de métal de faible point de fusion classiques destinées à être utilisées dans une pâte à braser, laquelle est un mélange d'un fondant et de particules de métal de faible point de fusion, contiennent des particules ayant différents diamètres, ce qui résulte souvent en une structure insatisfaisante de la pâte à braser lorsqu'on utilise les particules de métal classiques ci-dessus dans un trou fin d'un masque servant à imprimer ou à appliquer sur une fine zone à souder ou en une difficulté à séparer le masque.
(JA)
 ソルダペーストはフラックスと低融点金属粒子を混和したものであるが、従来の低融点金属粒子の製造方法や製造装置で作られた低融点金属粒子は粒径が大小様々な径のものが混在していた。従って、該ソルダペーストは微小なはんだ付け部に印刷塗布するためのマスクの微小な孔に完全に充填できなかったり、版抜け性が悪かったりした。  本発明は、耐熱性連続相液体と溶融状態の金属粉末が混ざり合った混合物にし、該混合物を膜状多孔質体に透過させることにより低融点金属粉末を所定の粒径に成形する。また本発明の装置は、加熱分散機構と冷却機構の間に膜状多孔質体を設置し、加熱分散機構には圧力容器を接続して加熱分散機構に高圧の圧力をかけるようにした。
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