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公开(公告)号：US20220176491A1
公开(公告)日：2022-06-09
申请号：US17441419
申请日：2020-03-25
申请人： Hitachi Metals, Ltd.
发明人： Hironori Yamane , Takahiro Yokawa , Makoto Sasaki
摘要： Disclosed is a manufacturing method of a welded pipe, which includes: bending a stainless steel strip while conveying the stainless steel strip in one direction to thereby form a pipe; and welding a butting part of the formed pipe.
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公开(公告)号：US09978497B2
公开(公告)日：2018-05-22
申请号：US14774703
申请日：2014-03-12
申请人： HITACHI METALS, LTD.
发明人： Daichi Azuma , Naoki Itoh , Makoto Sasaki , Shinichi Kazui
IPC分类号： H01F27/24 , H01F3/04 , B23K26/40 , H01F1/153 , H01F41/02 , B23K26/00 , B23K26/08 , B23K26/354 , B23K26/082 , B23K26/0622 , B23K26/361 , B23K103/02 , B23K101/36
CPC分类号： H01F27/24 , B23K26/0006 , B23K26/0622 , B23K26/082 , B23K26/0853 , B23K26/354 , B23K26/355 , B23K26/361 , B23K26/40 , B23K2101/36 , B23K2103/02 , H01F1/153 , H01F1/15308 , H01F3/04 , H01F41/0206 , H01F41/0226
摘要： The invention provides a wound magnetic core which is configured by winding an Fe-based amorphous alloy ribbon, the wound magnetic core containing a recess row including plural recesses formed by laser irradiation in a central part of the Fe-based amorphous alloy ribbon in a width direction, in which a ratio of a length of the central part to a total width is from 0.2 to 0.8.
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3.发明申请公开(公告)号：US20220172868A1
公开(公告)日：2022-06-02
申请号：US17529953
申请日：2021-11-18
申请人： Hitachi Metals, Ltd.
摘要： A method of producing a laminated amorphous alloy ribbon holding spool. The method includes providing amorphous alloy ribbon holding spools, each of which is wound with a single layer amorphous alloy ribbon, unwinding the single layer amorphous alloy ribbon from each of the amorphous alloy ribbon holding spools, making the single layer amorphous alloy ribbon travel with a laser being radiated thereto, to thereby simultaneously prepare single layer amorphous alloy ribbons having laser irradiation mark formed thereon, laminating the single layer amorphous alloy ribbons having the laser irradiation mark formed thereon to, thereby prepare a laminated amorphous alloy ribbon, and winding up the laminated amorphous alloy ribbon on a spool.
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公开(公告)号：US20220168846A1
公开(公告)日：2022-06-02
申请号：US17529910
申请日：2021-11-18
申请人： Hitachi Metals, Ltd.
IPC分类号： B23K26/359 , B23K26/0622 , B23K26/08 , B21C47/26
摘要： A method of producing an amorphous alloy ribbon. The method includes radiating a laser to an amorphous alloy ribbon, while the amorphous alloy ribbon travels or is travelling, to thereby form laser irradiation marks on the amorphous alloy ribbon. Further, when the amorphous alloy ribbon has a traveling speed of S1 m/sec and the laser has a scanning speed of S2 m/sec, the S1 is 0.1 m/sec or more and 30 m/sec or less, the S2 is 1 m/sec or more and 800 m/sec or less, and S2/S1 is 3.0 or more.
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公开(公告)号：US09409257B2
公开(公告)日：2016-08-09
申请号：US14942070
申请日：2015-11-16
申请人： HITACHI METALS, LTD.
发明人： Masanori Ochiai , Makoto Sasaki , Tomoyuki Satoh
IPC分类号： B23K26/384 , B23K26/00 , B23K26/14 , B23K26/16 , F02F5/00 , F16J13/12 , B23K103/04 , F16F5/00
CPC分类号： B23K26/384 , B23K26/0006 , B23K26/14 , B23K26/16 , B23K26/354 , B23K26/3568 , B23K37/08 , B23K2101/10 , B23K2101/26 , B23K2101/28 , B23K2103/04 , B23K2103/05 , B23P15/065 , F02F5/00 , F16J9/062
摘要： Provided is a wire rod for an I-type oil ring, which includes right and left rail portions and a web portion connecting the rail portions, which has an oil hole or a molten through hole formed in the web portion, and which has a circumscribing circle diameter of 10 mm or less in its transverse contour. The molten through hole has such a remolten portion formed on its exit side as encloses the exit of the molten through hole. The remolten portion exceeds such a molten portion in the transverse section along the center of the molten through hole as is formed in the molten through hole, and is formed to have 200 μm or less from the outer circumference of the molten through hole and 100 μm or less in the depth direction of the molten through hole.
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