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公开(公告)号：US10910152B2
公开(公告)日：2021-02-02
申请号：US15756775
申请日：2016-08-22
摘要： A laminated core manufacturing device includes: an overlapping unit configured to overlap the plurality of laminated core materials conveyed along different conveyance routes; an edge position correction unit configured to align edge positions in a width direction of the plurality of laminated core materials between the plurality of laminated core materials and to correct shift of each edge position of the plurality of laminated core materials with respect to a standard edge position; an uplift prevention unit configured to prevent uplift of the plurality of laminated core materials; and a punching unit configured to punch out the plurality of laminated core materials which are overlapped by the overlapping unit and have been subjected to a process to align the edge positions and to correct shift of the edge positions performed by the edge position correction unit, and a process to prevent the uplift performed by the uplift prevention unit.
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公开(公告)号：US10906082B2
公开(公告)日：2021-02-02
申请号：US15757088
申请日：2016-08-22
IPC分类号： B21D28/14 , H02K15/02 , H01F41/02 , B30B15/30 , B26D7/06 , B21D28/04 , B21D35/00 , B21D43/02 , B21D43/09 , B21D43/00
摘要： A Laminated core manufacturing device includes: an overlapping unit configured to overlap the plurality of laminated core materials conveyed along different conveyance routes; an edge aligning unit configured to align edge positions in a width direction of the plurality of laminated core materials between the plurality of laminated core materials; an uplift prevention unit configured to prevent uplift of the plurality of laminated core materials; an edge position correction unit configured to correct the edge positions in the width direction of the plurality of laminated core materials; and a punching unit configured to punch out the plurality of laminated core materials which are overlapped by the overlapping unit and have been subjected to an edge position alignment process performed by the edge aligning unit, an uplift prevention process performed by the uplift prevention unit, and an edge position correction process performed by the edge position correction unit.
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13.发明申请公开(公告)号：US20170368590A1
公开(公告)日：2017-12-28
申请号：US15538530
申请日：2015-12-25
发明人： Kunihiro Senda , Masanori Uesaka , Yoshihiko Oda
CPC分类号： B21D28/14 , B21D28/02 , B21D28/10 , B21D39/032 , B60K7/0007 , B60L3/0061 , B60L2220/50 , H01F41/0233 , H01F41/0246 , H01F41/0266 , H02K1/145 , H02K1/148 , H02K15/022
摘要： A punch processing method for a laminated iron core includes sequentially feeding the steel sheets to a mold; and performing a plurality of processes in the mold, the plurality of processes includes fixing the steel sheets being stacked to each other at a first fixing part that is positioned outside a closed curved line corresponding to an outermost periphery of the laminated iron core and a second fixing part that is positioned in a portion that finally serves as the laminated iron core; and performing punch processing on the outermost periphery of the laminated iron core while the steel sheets are stacked.
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公开(公告)号：US11990261B2
公开(公告)日：2024-05-21
申请号：US17998356
申请日：2021-03-04
IPC分类号： H01F1/16 , B32B3/00 , B32B3/10 , B32B3/26 , B32B3/30 , C21D8/12 , C21D9/46 , C22C38/00 , C25F3/06 , H01F1/147 , C21D7/02 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/60
CPC分类号： H01F1/16 , B32B3/00 , B32B3/10 , B32B3/26 , B32B3/263 , B32B3/30 , C21D8/1277 , C21D8/1294 , C21D9/46 , C25F3/06 , H01F1/147 , C21D7/02 , C21D2201/05 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/60 , C22C2202/02 , Y10T428/12972 , Y10T428/12993
摘要： Provided is a linear groove formation pattern with which both an effect of reducing the building factor and a high magnetic flux density can be obtained. In a grain-oriented electrical steel sheet having a plurality of linear grooves extending in a direction crossing a rolling direction of the steel sheet on a surface of the steel sheet, a surface of the steel sheet between the linear grooves has a recessed defect that is recessed from the surface, a volume fraction of the recessed defect in the steel sheet is 0.0025 vol % or more and 0.01 vol % or less of a steel sheet without the recessed defect, and discontinuous portions that disrupt the extension of the linear grooves are provided at a frequency of 30 or more and 200 or less per square meter of the steel sheet.
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公开(公告)号：US11551839B2
公开(公告)日：2023-01-10
申请号：US17054605
申请日：2019-03-20
IPC分类号： H01F1/147 , C21D6/00 , C21D8/12 , C21D9/46 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , H02K1/02
摘要： A motor comprising a steel sheet used as a core material of the motor, wherein the steel sheet includes a composition including: by mass %, 0.010% or less of C; 2.0% to 7.0% of Si; 2.0% or less of Al; 0.05% to 1.0% of Mn; 0.005% or less of S; 0.005% or less of N; and balance Fe and inevitable impurities; the steel sheet includes a magnetic flux density changing area where a change ΔB in magnetic flux density to a change ΔH=50 A/m in a magnetic field, is equal to or higher than 0.50 T; a thickness of the steel sheet is 0.05 mm to 0.20 mm; and an eddy-current loss of the steel sheet, at 1000 Hz−1.0 T, is equal to or less than 0.55 of a total iron loss.
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16.发明授权公开(公告)号：US10898939B2
公开(公告)日：2021-01-26
申请号：US15538530
申请日：2015-12-25
发明人： Kunihiro Senda , Masanori Uesaka , Yoshihiko Oda
IPC分类号： H01F3/04 , B21D28/14 , B21D28/02 , B21D28/10 , H02K1/14 , B21D39/03 , H01F41/02 , H02K15/02 , B60K7/00 , B60L3/00
摘要： A punch processing method for a laminated iron core includes sequentially feeding the steel sheets to a mold; and performing a plurality of processes in the mold, the plurality of processes includes fixing the steel sheets being stacked to each other at a first fixing part that is positioned outside a closed curved line corresponding to an outermost periphery of the laminated iron core and a second fixing part that is positioned in a portion that finally serves as the laminated iron core; and performing punch processing on the outermost periphery of the laminated iron core while the steel sheets are stacked.
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公开(公告)号：US10533969B2
公开(公告)日：2020-01-14
申请号：US15521406
申请日：2015-11-02
发明人： Takeshi Omura , Yoshiaki Zaizen , Kunihiro Senda
摘要： To predict the iron loss of a non-oriented electrical steel sheet after shearing, a non-oriented electrical steel sheet is sheared to a certain width, and iron loss Wt(B0) of the non-oriented electrical steel sheet after shearing is estimated according to a predetermined relational expression based on iron loss Wn(B1) in a non-machining-affected zone in which no machining strain is introduced by the shearing and iron loss Wi(B2) in a machining affected zone in which machining strain is introduced.
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公开(公告)号：US20180178267A1
公开(公告)日：2018-06-28
申请号：US15757088
申请日：2016-08-22
CPC分类号： B21D28/14 , B21D28/04 , B21D35/007 , B21D43/003 , B21D43/023 , B21D43/09 , B26D7/06 , B26D7/0625 , B30B15/30 , B30B15/306 , H01F41/02 , H01F41/0233 , H01F41/0266 , H02K15/02 , H02K15/026
摘要： A Laminated core manufacturing device includes: an overlapping unit configured to overlap the plurality of laminated core materials conveyed along different conveyance routes; an edge aligning unit configured to align edge positions in a width direction of the plurality of laminated core materials between the plurality of laminated core materials; an uplift prevention unit configured to prevent uplift of the plurality of laminated core materials; an edge position correction unit configured to correct the edge positions in the width direction of the plurality of laminated core materials; and a punching unit configured to punch out the plurality of laminated core materials which are overlapped by the overlapping unit and have been subjected to an edge position alignment process performed by the edge aligning unit, an uplift prevention process performed by the uplift prevention unit, and an edge position correction process performed by the edge position correction unit.
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公开(公告)号：US11923116B2
公开(公告)日：2024-03-05
申请号：US17298672
申请日：2019-11-21
IPC分类号： H01F1/147 , C21D1/34 , C21D6/00 , C21D9/46 , C22C38/00 , C22C38/04 , C22C38/06 , C22C38/22 , C22C38/34 , C22C38/60
CPC分类号： H01F1/147 , C21D1/34 , C21D6/008 , C21D9/46 , C22C38/001 , C22C38/002 , C22C38/008 , C22C38/04 , C22C38/06 , C22C38/22 , C22C38/34 , C22C38/60 , C21D2201/05 , C22C2202/02
摘要： Disclosed is a grain-oriented electrical steel sheet with extremely low iron loss by means of a magnetic domain refining technique. In a grain-oriented electrical steel sheet having a plurality of magnetic domains refined via a local strain introduction portion, when a direct-current external magnetic field is applied to the steel sheet in a rolling direction, for a magnetic flux leaked from the local strain introduction portion at a position 1.0 mm away from a surface of the steel sheet at a side of the local strain introduction portion, a value obtained by dividing an intensity level of a total leakage magnetic flux by an intensity level of a magnetic flux leaked due to causes other than strain is more than 1.2.
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公开(公告)号：US11198916B2
公开(公告)日：2021-12-14
申请号：US16648663
申请日：2018-09-25
IPC分类号： C22C38/00 , C22C38/60 , C23C22/00 , C21D8/12 , C21D6/00 , C21D9/46 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/16 , H01F1/16
摘要： Further lower iron loss can be achieved in a grain-oriented electrical steel sheet including: a predetermined film mainly composed of forsterite on a front and back surfaces thereof; and a plurality of grooves on the front surface thereof, in which the plurality of grooves have an average depth of 6% or more of a thickness of the steel sheet and are spaced a distance of 1 mm to 15 mm from respective adjacent grooves, the steel sheet has a specific magnetic permeability μr15/50 of 35000 or more when subjected to alternating current magnetization at a frequency of 50 Hz and a maximum magnetic flux density of 1.5 T, and the steel sheet includes isolated parts having a presence frequency of 0.3/μm or less, the isolated parts being separated from a continuous part of the film in an interface between the steel sheet and the film in a cross section orthogonal to the rolling direction of the steel sheet.
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