APPARATUS FOR MANUFACTURING METAL POWDER

APPARATUS FOR MANUFACTURING METAL POWDER

PURPOSE:To stably manufacture metal fine powder by controlling ratio of interval between lower end of a molten metal flowing-down nozzle and an atomizing nozzle to the max. diameter of atomizing medium jet to the specific value at the time of finely pulverizing after rapidly cooling and solidifying...

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Hauptverfasser: NITTA MINORU, MAKIISHI YUKIO
Format: Patent
Sprache:eng
Schlagworte:
CASTING
MAKING METALLIC POWDER
MANUFACTURE OF ARTICLES FROM METALLIC POWDER
PERFORMING OPERATIONS
POWDER METALLURGY
TRANSPORTING
WORKING METALLIC POWDER
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creator NITTA MINORU
MAKIISHI YUKIO
description PURPOSE:To stably manufacture metal fine powder by controlling ratio of interval between lower end of a molten metal flowing-down nozzle and an atomizing nozzle to the max. diameter of atomizing medium jet to the specific value at the time of finely pulverizing after rapidly cooling and solidifying molten metal while blowing atomizing medium to the molten metal stream from the nozzle. CONSTITUTION:The molten metal from a melting apparatus 1 composed of a melting furnace 1a and a tundish 1b is caused to flow down as the bar-like molten metal stream 7 from molten metal nozzle 6 arranged at bottom part in the tundish 1b and rapidly cooled and solidified by blowing the atomizing medium jet 9 of water, etc., from an injecting hole 2b in the atomizing nozzle 2 arranged at the circumference thereof against the molten metal stream 7 to make the atomizing medium slurry of fine metal powder and water, etc., and after charging this into a slurry storing vessel 5 through gas-liquid separating vessel 4, the metal fine particles are recovered. In this case, by arranging a cooling means 8 in inner part of the atomizing nozzle 2, the injecting hole 2b of the atomizing medium jet 9 approaches the molten metal nozzle 6 without deforming the atomizing nozzle 2 at high temp., and by forming the interval (l) between the lower end of molten metal nozzle 6 and the injecting hole 2b for atomizing medium jet to
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CONSTITUTION:The molten metal from a melting apparatus 1 composed of a melting furnace 1a and a tundish 1b is caused to flow down as the bar-like molten metal stream 7 from molten metal nozzle 6 arranged at bottom part in the tundish 1b and rapidly cooled and solidified by blowing the atomizing medium jet 9 of water, etc., from an injecting hole 2b in the atomizing nozzle 2 arranged at the circumference thereof against the molten metal stream 7 to make the atomizing medium slurry of fine metal powder and water, etc., and after charging this into a slurry storing vessel 5 through gas-liquid separating vessel 4, the metal fine particles are recovered. In this case, by arranging a cooling means 8 in inner part of the atomizing nozzle 2, the injecting hole 2b of the atomizing medium jet 9 approaches the molten metal nozzle 6 without deforming the atomizing nozzle 2 at high temp., and by forming the interval (l) between the lower end of molten metal nozzle 6 and the injecting hole 2b for atomizing medium jet to &lt;= two times the max. diameter (d) of the atomizing medium jet 9, the metal fine powder is stably manufactured.</description><language>eng</language><subject>CASTING ; MAKING METALLIC POWDER ; MANUFACTURE OF ARTICLES FROM METALLIC POWDER ; PERFORMING OPERATIONS ; POWDER METALLURGY ; TRANSPORTING ; WORKING METALLIC POWDER</subject><creationdate>1991</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=19911105&amp;DB=EPODOC&amp;CC=JP&amp;NR=H03247709A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25543,76293</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=19911105&amp;DB=EPODOC&amp;CC=JP&amp;NR=H03247709A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>NITTA MINORU</creatorcontrib><creatorcontrib>MAKIISHI YUKIO</creatorcontrib><title>APPARATUS FOR MANUFACTURING METAL POWDER</title><description>PURPOSE:To stably manufacture metal fine powder by controlling ratio of interval between lower end of a molten metal flowing-down nozzle and an atomizing nozzle to the max. diameter of atomizing medium jet to the specific value at the time of finely pulverizing after rapidly cooling and solidifying molten metal while blowing atomizing medium to the molten metal stream from the nozzle. CONSTITUTION:The molten metal from a melting apparatus 1 composed of a melting furnace 1a and a tundish 1b is caused to flow down as the bar-like molten metal stream 7 from molten metal nozzle 6 arranged at bottom part in the tundish 1b and rapidly cooled and solidified by blowing the atomizing medium jet 9 of water, etc., from an injecting hole 2b in the atomizing nozzle 2 arranged at the circumference thereof against the molten metal stream 7 to make the atomizing medium slurry of fine metal powder and water, etc., and after charging this into a slurry storing vessel 5 through gas-liquid separating vessel 4, the metal fine particles are recovered. In this case, by arranging a cooling means 8 in inner part of the atomizing nozzle 2, the injecting hole 2b of the atomizing medium jet 9 approaches the molten metal nozzle 6 without deforming the atomizing nozzle 2 at high temp., and by forming the interval (l) between the lower end of molten metal nozzle 6 and the injecting hole 2b for atomizing medium jet to &lt;= two times the max. diameter (d) of the atomizing medium jet 9, the metal fine powder is stably manufactured.</description><subject>CASTING</subject><subject>MAKING METALLIC POWDER</subject><subject>MANUFACTURE OF ARTICLES FROM METALLIC POWDER</subject><subject>PERFORMING OPERATIONS</subject><subject>POWDER METALLURGY</subject><subject>TRANSPORTING</subject><subject>WORKING METALLIC POWDER</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1991</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZNBwDAhwDHIMCQ1WcPMPUvB19At1c3QOCQ3y9HNX8HUNcfRRCPAPd3EN4mFgTUvMKU7lhdLcDIpuriHOHrqpBfnxqcUFicmpeakl8V4BHgbGRibm5gaWjsbEqAEAIjEkgQ</recordid><startdate>19911105</startdate><enddate>19911105</enddate><creator>NITTA MINORU</creator><creator>MAKIISHI YUKIO</creator><scope>EVB</scope></search><sort><creationdate>19911105</creationdate><title>APPARATUS FOR MANUFACTURING METAL POWDER</title><author>NITTA MINORU ; MAKIISHI YUKIO</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JPH03247709A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1991</creationdate><topic>CASTING</topic><topic>MAKING METALLIC POWDER</topic><topic>MANUFACTURE OF ARTICLES FROM METALLIC POWDER</topic><topic>PERFORMING OPERATIONS</topic><topic>POWDER METALLURGY</topic><topic>TRANSPORTING</topic><topic>WORKING METALLIC POWDER</topic><toplevel>online_resources</toplevel><creatorcontrib>NITTA MINORU</creatorcontrib><creatorcontrib>MAKIISHI YUKIO</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>NITTA MINORU</au><au>MAKIISHI YUKIO</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>APPARATUS FOR MANUFACTURING METAL POWDER</title><date>1991-11-05</date><risdate>1991</risdate><abstract>PURPOSE:To stably manufacture metal fine powder by controlling ratio of interval between lower end of a molten metal flowing-down nozzle and an atomizing nozzle to the max. diameter of atomizing medium jet to the specific value at the time of finely pulverizing after rapidly cooling and solidifying molten metal while blowing atomizing medium to the molten metal stream from the nozzle. CONSTITUTION:The molten metal from a melting apparatus 1 composed of a melting furnace 1a and a tundish 1b is caused to flow down as the bar-like molten metal stream 7 from molten metal nozzle 6 arranged at bottom part in the tundish 1b and rapidly cooled and solidified by blowing the atomizing medium jet 9 of water, etc., from an injecting hole 2b in the atomizing nozzle 2 arranged at the circumference thereof against the molten metal stream 7 to make the atomizing medium slurry of fine metal powder and water, etc., and after charging this into a slurry storing vessel 5 through gas-liquid separating vessel 4, the metal fine particles are recovered. In this case, by arranging a cooling means 8 in inner part of the atomizing nozzle 2, the injecting hole 2b of the atomizing medium jet 9 approaches the molten metal nozzle 6 without deforming the atomizing nozzle 2 at high temp., and by forming the interval (l) between the lower end of molten metal nozzle 6 and the injecting hole 2b for atomizing medium jet to &lt;= two times the max. diameter (d) of the atomizing medium jet 9, the metal fine powder is stably manufactured.</abstract><oa>free_for_read</oa></addata></record>
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subjects CASTING
MAKING METALLIC POWDER
MANUFACTURE OF ARTICLES FROM METALLIC POWDER
PERFORMING OPERATIONS
POWDER METALLURGY
TRANSPORTING
WORKING METALLIC POWDER
title APPARATUS FOR MANUFACTURING METAL POWDER
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