PRODUCTION METHOD FOR CASE-INTEGRATED BONDED MAGNET
A production method for an anisotropic bonded magnet is provided which can improve the productivity for annular anisotropic bonded magnets and reduce the cost thereof. The production method for an anisotropic bonded magnet according to the present invention comprises: an alignment step that applies,...
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| creator | MITARAI Hironari HONKURA Yoshinobu KATO Masayuki OKUMURA Ikuzou MATSUOKA Hiroshi |
| description | A production method for an anisotropic bonded magnet is provided which can improve the productivity for annular anisotropic bonded magnets and reduce the cost thereof. The production method for an anisotropic bonded magnet according to the present invention comprises: an alignment step that applies, from aligning magnetic pole bodies (13, 14) which include an even number of permanent magnets arranged uniformly around the outer periphery of an annular cavity (c) filled with magnetic raw material, aligning magnetic fields to cause rare-earth anisotropic magnet powder to be semi-radially aligned; a molding step that compressively molds the semi-radially aligned magnet raw material to obtain an annular compact; and a discharging step that discharges the compact from the annular cavity, and is characterized by further comprising a demagnetizing step that causes the aligning magnetic pole bodies to relatively move only in circumferential direction with respect to the compact after the molding step thereby to apply demagnetization magnetic fields to the compact, wherein the demagnetization magnetic fields are applied from the aligning magnetic pole bodies with opposite poles to those during the alignment step, and the demagnetization magnetic fields are in directions for cancelling the magnetization of the compact caused by the aligning magnetic fields. This allows considerable number of anisotropic bonded magnets to be produced in a short time. |
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| fullrecord | <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_EP2562775B1</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>EP2562775B1</sourcerecordid><originalsourceid>FETCH-epo_espacenet_EP2562775B13</originalsourceid><addsrcrecordid>eNrjZDAOCPJ3CXUO8fT3U_B1DfHwd1Fw8w9ScHYMdtX19AtxdQ9yDHF1UXDy93MBUr6O7n6uITwMrGmJOcWpvFCam0HBzTXE2UM3tSA_PrW4IDE5NS-1JN41wMjUzMjc3NTJ0JgIJQBSRSav</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>PRODUCTION METHOD FOR CASE-INTEGRATED BONDED MAGNET</title><source>esp@cenet</source><creator>MITARAI Hironari ; HONKURA Yoshinobu ; KATO Masayuki ; OKUMURA Ikuzou ; MATSUOKA Hiroshi</creator><creatorcontrib>MITARAI Hironari ; HONKURA Yoshinobu ; KATO Masayuki ; OKUMURA Ikuzou ; MATSUOKA Hiroshi</creatorcontrib><description>A production method for an anisotropic bonded magnet is provided which can improve the productivity for annular anisotropic bonded magnets and reduce the cost thereof. The production method for an anisotropic bonded magnet according to the present invention comprises: an alignment step that applies, from aligning magnetic pole bodies (13, 14) which include an even number of permanent magnets arranged uniformly around the outer periphery of an annular cavity (c) filled with magnetic raw material, aligning magnetic fields to cause rare-earth anisotropic magnet powder to be semi-radially aligned; a molding step that compressively molds the semi-radially aligned magnet raw material to obtain an annular compact; and a discharging step that discharges the compact from the annular cavity, and is characterized by further comprising a demagnetizing step that causes the aligning magnetic pole bodies to relatively move only in circumferential direction with respect to the compact after the molding step thereby to apply demagnetization magnetic fields to the compact, wherein the demagnetization magnetic fields are applied from the aligning magnetic pole bodies with opposite poles to those during the alignment step, and the demagnetization magnetic fields are in directions for cancelling the magnetization of the compact caused by the aligning magnetic fields. This allows considerable number of anisotropic bonded magnets to be produced in a short time.</description><language>eng ; fre ; ger</language><subject>AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING ; BASIC ELECTRIC ELEMENTS ; CASTING ; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ; DYNAMO-ELECTRIC MACHINES ; ELECTRICITY ; GENERATION ; INDUCTANCES ; MAGNETS ; MAKING METALLIC POWDER ; MANUFACTURE OF ARTICLES FROM METALLIC POWDER ; PERFORMING OPERATIONS ; POWDER METALLURGY ; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES ; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR ; SHAPING OR JOINING OF PLASTICS ; TRANSFORMERS ; TRANSPORTING ; WORKING METALLIC POWDER ; WORKING OF PLASTICS ; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL</subject><creationdate>2017</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&date=20171101&DB=EPODOC&CC=EP&NR=2562775B1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,778,883,25547,76298</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20171101&DB=EPODOC&CC=EP&NR=2562775B1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>MITARAI Hironari</creatorcontrib><creatorcontrib>HONKURA Yoshinobu</creatorcontrib><creatorcontrib>KATO Masayuki</creatorcontrib><creatorcontrib>OKUMURA Ikuzou</creatorcontrib><creatorcontrib>MATSUOKA Hiroshi</creatorcontrib><title>PRODUCTION METHOD FOR CASE-INTEGRATED BONDED MAGNET</title><description>A production method for an anisotropic bonded magnet is provided which can improve the productivity for annular anisotropic bonded magnets and reduce the cost thereof. The production method for an anisotropic bonded magnet according to the present invention comprises: an alignment step that applies, from aligning magnetic pole bodies (13, 14) which include an even number of permanent magnets arranged uniformly around the outer periphery of an annular cavity (c) filled with magnetic raw material, aligning magnetic fields to cause rare-earth anisotropic magnet powder to be semi-radially aligned; a molding step that compressively molds the semi-radially aligned magnet raw material to obtain an annular compact; and a discharging step that discharges the compact from the annular cavity, and is characterized by further comprising a demagnetizing step that causes the aligning magnetic pole bodies to relatively move only in circumferential direction with respect to the compact after the molding step thereby to apply demagnetization magnetic fields to the compact, wherein the demagnetization magnetic fields are applied from the aligning magnetic pole bodies with opposite poles to those during the alignment step, and the demagnetization magnetic fields are in directions for cancelling the magnetization of the compact caused by the aligning magnetic fields. This allows considerable number of anisotropic bonded magnets to be produced in a short time.</description><subject>AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING</subject><subject>BASIC ELECTRIC ELEMENTS</subject><subject>CASTING</subject><subject>CONVERSION OR DISTRIBUTION OF ELECTRIC POWER</subject><subject>DYNAMO-ELECTRIC MACHINES</subject><subject>ELECTRICITY</subject><subject>GENERATION</subject><subject>INDUCTANCES</subject><subject>MAGNETS</subject><subject>MAKING METALLIC POWDER</subject><subject>MANUFACTURE OF ARTICLES FROM METALLIC POWDER</subject><subject>PERFORMING OPERATIONS</subject><subject>POWDER METALLURGY</subject><subject>SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES</subject><subject>SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR</subject><subject>SHAPING OR JOINING OF PLASTICS</subject><subject>TRANSFORMERS</subject><subject>TRANSPORTING</subject><subject>WORKING METALLIC POWDER</subject><subject>WORKING OF PLASTICS</subject><subject>WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2017</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZDAOCPJ3CXUO8fT3U_B1DfHwd1Fw8w9ScHYMdtX19AtxdQ9yDHF1UXDy93MBUr6O7n6uITwMrGmJOcWpvFCam0HBzTXE2UM3tSA_PrW4IDE5NS-1JN41wMjUzMjc3NTJ0JgIJQBSRSav</recordid><startdate>20171101</startdate><enddate>20171101</enddate><creator>MITARAI Hironari</creator><creator>HONKURA Yoshinobu</creator><creator>KATO Masayuki</creator><creator>OKUMURA Ikuzou</creator><creator>MATSUOKA Hiroshi</creator><scope>EVB</scope></search><sort><creationdate>20171101</creationdate><title>PRODUCTION METHOD FOR CASE-INTEGRATED BONDED MAGNET</title><author>MITARAI Hironari ; HONKURA Yoshinobu ; KATO Masayuki ; OKUMURA Ikuzou ; MATSUOKA Hiroshi</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_EP2562775B13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre ; ger</language><creationdate>2017</creationdate><topic>AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING</topic><topic>BASIC ELECTRIC ELEMENTS</topic><topic>CASTING</topic><topic>CONVERSION OR DISTRIBUTION OF ELECTRIC POWER</topic><topic>DYNAMO-ELECTRIC MACHINES</topic><topic>ELECTRICITY</topic><topic>GENERATION</topic><topic>INDUCTANCES</topic><topic>MAGNETS</topic><topic>MAKING METALLIC POWDER</topic><topic>MANUFACTURE OF ARTICLES FROM METALLIC POWDER</topic><topic>PERFORMING OPERATIONS</topic><topic>POWDER METALLURGY</topic><topic>SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES</topic><topic>SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR</topic><topic>SHAPING OR JOINING OF PLASTICS</topic><topic>TRANSFORMERS</topic><topic>TRANSPORTING</topic><topic>WORKING METALLIC POWDER</topic><topic>WORKING OF PLASTICS</topic><topic>WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL</topic><toplevel>online_resources</toplevel><creatorcontrib>MITARAI Hironari</creatorcontrib><creatorcontrib>HONKURA Yoshinobu</creatorcontrib><creatorcontrib>KATO Masayuki</creatorcontrib><creatorcontrib>OKUMURA Ikuzou</creatorcontrib><creatorcontrib>MATSUOKA Hiroshi</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>MITARAI Hironari</au><au>HONKURA Yoshinobu</au><au>KATO Masayuki</au><au>OKUMURA Ikuzou</au><au>MATSUOKA Hiroshi</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>PRODUCTION METHOD FOR CASE-INTEGRATED BONDED MAGNET</title><date>2017-11-01</date><risdate>2017</risdate><abstract>A production method for an anisotropic bonded magnet is provided which can improve the productivity for annular anisotropic bonded magnets and reduce the cost thereof. The production method for an anisotropic bonded magnet according to the present invention comprises: an alignment step that applies, from aligning magnetic pole bodies (13, 14) which include an even number of permanent magnets arranged uniformly around the outer periphery of an annular cavity (c) filled with magnetic raw material, aligning magnetic fields to cause rare-earth anisotropic magnet powder to be semi-radially aligned; a molding step that compressively molds the semi-radially aligned magnet raw material to obtain an annular compact; and a discharging step that discharges the compact from the annular cavity, and is characterized by further comprising a demagnetizing step that causes the aligning magnetic pole bodies to relatively move only in circumferential direction with respect to the compact after the molding step thereby to apply demagnetization magnetic fields to the compact, wherein the demagnetization magnetic fields are applied from the aligning magnetic pole bodies with opposite poles to those during the alignment step, and the demagnetization magnetic fields are in directions for cancelling the magnetization of the compact caused by the aligning magnetic fields. This allows considerable number of anisotropic bonded magnets to be produced in a short time.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING BASIC ELECTRIC ELEMENTS CASTING CONVERSION OR DISTRIBUTION OF ELECTRIC POWER DYNAMO-ELECTRIC MACHINES ELECTRICITY GENERATION INDUCTANCES MAGNETS MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER PERFORMING OPERATIONS POWDER METALLURGY SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSFORMERS TRANSPORTING WORKING METALLIC POWDER WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL |
| title | PRODUCTION METHOD FOR CASE-INTEGRATED BONDED MAGNET |
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