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公开(公告)号：EP1905849A4
公开(公告)日：2011-01-05
申请号：EP06768024
申请日：2006-07-10
发明人： HIRAI ISAO , YOSHINO KOHEI , TAKUBO TAKAYASU , YOSHIDA KAZUHIKO , HASE KAZUKUNI , KIMURA HIDETO , UWAI KIYOSHI , TOYOOKA TAKAAKI
IPC分类号： C21D9/40 , B21J1/06 , B21K1/05 , B60B27/00 , B60B35/02 , C21D1/02 , C21D1/19 , F16C19/18 , F16C33/62 , F16C33/64
CPC分类号： F16C33/62 , B21K1/40 , B60B27/00 , C21D1/02 , C21D1/19 , C21D9/40 , C21D2221/00 , F16C33/64 , F16C2326/02 , Y10T29/49492 , Y10T29/49496 , Y10T29/49497 , Y10T29/49643 , Y10T29/49657 , Y10T29/497
摘要： A method is directed to a production of a bearing device for a wheel including an inner member (1) and an outer member (2) rotatable relative to each other through a plurality of rolling elements (3), in which a component part forming one of the inner member (1) and the outer member (2) is a hot forged product. In the practice of this method, during or at the end of a hot forging step for hot forging the component part, a portion of the component part is cooled by spraying a coolant or by controlling an atmospheric temperature, to thereby render a matrix of the component part to represent a standard structure and render a surface portion of the component part to represent a non-standard structure (30).
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公开(公告)号：EP1731776A4
公开(公告)日：2009-04-22
申请号：EP05719879
申请日：2005-03-03
发明人： HIRAI ISAO , TAKUBO TAKAYASU , YOSHIDA KAZUHIKO
IPC分类号： B60B35/18 , F16C33/64 , B60B27/00 , C21D9/40 , C22C38/00 , C22C38/14 , F16C19/18 , F16C19/38 , F16C33/60 , F16C33/62 , F16C35/063 , F16C43/04
CPC分类号： C21D9/40 , B60B27/0005 , B60B27/001 , B60B27/0042 , B60B27/0068 , B60B27/0084 , B60B27/0094 , C21D2211/001 , C22C38/02 , C22C38/04 , C22C38/18 , F16C19/186 , F16C19/187 , F16C19/386 , F16C33/64 , F16C35/063 , F16C43/04 , F16C2326/02
摘要： A bearing device for a wheel enabling the easy control of quality since there is no possibility of cracking even if caulking is applied thereto. The bearing device comprises an outer ring (3) having double rows of raceway surfaces on the inner periphery thereof, an inner member having raceway surfaces opposed to the raceway surfaces, and balls (1) interposed between the double rows of raceway surfaces opposed to each other. The inner member further comprises a HUB ring (4) and an inner ring (2). Caulking is applied to the HUB ring (4) to join it to the inner ring (2). The grain size number of the austenite grains of a caulked section (4b) is at least 6.
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公开(公告)号：EP1908852A4
公开(公告)日：2012-03-21
申请号：EP06768021
申请日：2006-07-10
发明人： HIRAI ISAO , YOSHINO KOHEI , TAKUBO TAKAYASU , FUJIMURA AKIRA , OBATA TAKUYA
CPC分类号： F16C33/62 , B60B27/0005 , B60B27/001 , B60B27/0042 , B60B27/0084 , B60B27/0094 , C21D1/02 , C21D1/06 , C21D1/19 , C21D1/62 , C21D9/40 , C21D2211/002 , C21D2211/005 , C21D2211/008 , C21D2221/00 , F16C33/64 , F16C35/063 , Y10T29/49679
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公开(公告)号：EP1731777A4
公开(公告)日：2009-04-22
申请号：EP05719880
申请日：2005-03-03
发明人： HIRAI ISAO , TAKUBO TAKAYASU , YOSHIDA KAZUHIKO
IPC分类号： F16C33/64 , F16D3/20 , B60B27/00 , B60B35/02 , C21D9/40 , C22C38/00 , C22C38/14 , F16C19/18 , F16C19/38 , F16C33/32 , F16C33/36 , F16C33/62 , F16C33/78 , F16D3/22 , F16D3/2245 , F16D3/227
CPC分类号： C22C38/04 , B60B27/0005 , B60B27/001 , B60B27/0026 , B60B27/0068 , B60B27/0084 , B60B27/0094 , C21D9/40 , C22C38/02 , C22C38/18 , F16C19/186 , F16C19/187 , F16C33/62 , F16C33/64 , F16C33/78 , F16C2326/02 , F16D3/22 , F16D3/223 , F16D3/227 , F16D2003/22326 , F16D2250/00 , F16D2300/10 , F16D2300/12 , Y10T29/49679 , Y10T428/12972 , Y10T428/12993
摘要： A hub ring (4) and/or an outer ring (3) constituting a bearing device for a wheel (10), which is formed of a steel which contains 0.45 to 0.70 mass % of C and at least one of V, Nb and Ti in a total amount of 0.3 mass % or less, wherein a micro structure of a part being not surface-hardening-treated contains a ferrite in 15 to 30 area % and contains a particulate ferrite.
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