公开(公告)号：US20170320137A1

公开(公告)日：2017-11-09

申请号：US15535282

申请日：2015-12-08

Applicant: SUMITOMO ELECTRIC SINTERED ALLOY, LTD.

Inventor： Yasunori Sonoda ,  Ryota Take

IPC: B22F3/16

CPC classification number: B22F3/162 ,  B22F1/007 ,  B22F2301/35 ,  B22F2998/10 ,  C22C38/00 ,  C22C38/04 ,  C22C38/08 ,  C22C38/12 ,  C22C38/16 ,  C22C38/18 ,  C22C38/22 ,  C22C38/44 ,  B22F3/02 ,  B23B1/00 ,  B22F3/10

Abstract: Provided is a method for manufacturing a sintered component having a hole formed therein, in which a sintered component having no defect, such as cracks, can be manufactured with good productivity and also a reduction in tool life accompanied by forming the hole can be suppressed. The method for manufacturing a sintered component includes a molding step of press-molding a raw material powder containing a metal powder and thus fabricating a green body; a drilling step of forming a hole in the green body using a candle-type drill and thus forming a thin-walled portion, of which a thickness Gt as measured between an inner circumferential surface of the hole and an outer surface of the green body is smaller than a diameter Gd of the hole; and a sintering step of sintering the green body after the drilling step.

公开(公告)号：US11219950B2

公开(公告)日：2022-01-11

申请号：US16356572

申请日：2019-03-18

Applicant: SUMITOMO ELECTRIC SINTERED ALLOY, LTD

Inventor： Yasunori Sonoda ,  Ryota Take

IPC: B22F3/10 ,  B22F3/02 ,  C22C38/00 ,  B22F3/16 ,  B22F1/00 ,  C22C38/18 ,  C22C38/04 ,  C22C38/08 ,  C22C38/16 ,  C22C38/22 ,  C22C38/44 ,  C22C38/12

Abstract: Provided is a method for manufacturing a sintered component having a hole formed therein, in which a sintered component having no defect, such as cracks, can be manufactured with good productivity and also a reduction in tool life accompanied by forming the hole can be suppressed. The method for manufacturing a sintered component includes a molding step of press-molding a raw material powder containing a metal powder and thus fabricating a green body; a drilling step of forming a hole in the green body using a candle-type drill and thus forming a thin-walled portion, of which a thickness Gt as measured between an inner circumferential surface of the hole and an outer surface of the green body is smaller than a diameter Gd of the hole; and a sintering step of sintering the green body after the drilling step.

公开(公告)号：US11097342B2

公开(公告)日：2021-08-24

申请号：US15535282

申请日：2015-12-08

Applicant: SUMITOMO ELECTRIC SINTERED ALLOY, LTD.

Inventor： Yasunori Sonoda ,  Ryota Take

IPC: B22F3/16 ,  B22F1/00 ,  C22C38/04 ,  C22C38/00 ,  C22C38/44 ,  C22C38/08 ,  C22C38/12 ,  C22C38/16 ,  C22C38/18 ,  C22C38/22

Abstract: Provided is a method for manufacturing a sintered component having a hole formed therein, in which a sintered component having no defect, such as cracks, can be manufactured with good productivity and also a reduction in tool life accompanied by forming the hole can be suppressed. The method for manufacturing a sintered component includes a molding step of press-molding a raw material powder containing a metal powder and thus fabricating a green body; a drilling step of forming a hole in the green body using a candle-type drill and thus forming a thin-walled portion, of which a thickness Gt as measured between an inner circumferential surface of the hole and an outer surface of the green body is smaller than a diameter Gd of the hole; and a sintering step of sintering the green body after the drilling step.

公开(公告)号：US11027335B2

公开(公告)日：2021-06-08

申请号：US15739387

申请日：2016-03-14

Applicant: Sumitomo Electric Sintered Alloy, Ltd.

Inventor： Ryota Take

IPC: B29C67/04 ,  B22F3/16 ,  B22F3/00 ,  B22F3/24

Abstract: A sintered body manufacturing apparatus includes a compacting apparatus configured to press a raw powder containing a metal powder into a green compact, a machining apparatus configured to perform a cutting operation on the green compact to produce an unsintered materials, and a green compact conveying path configured to connect the compacting apparatus in series to the machining apparatus to convey green compacts one by one from the compacting apparatus to the machining apparatus.

公开(公告)号：US20200331065A1

公开(公告)日：2020-10-22

申请号：US16922287

申请日：2020-07-07

Applicant: SUMITOMO ELECTRIC SINTERED ALLOY, LTD. ,  NIKKEN TOOL CO., LTD.

Inventor： Yasunori Sonoda ,  Ryota Take ,  Fumihiro Matsumoto ,  Tsuguru Sugimoto

IPC: B22F3/16 ,  B23B51/02 ,  C22C38/00 ,  B22F5/10

Abstract: Provided is a method for manufacturing a sintered component, which can suppress occurrence of edge chipping when a through-hole is formed in a powder-compact green body and also has a good productivity. The method for manufacturing a sintered component includes a molding step of press-molding a raw material powder containing a metal powder and thus fabricating a powder-compact green body; a drilling step of forming a hole in the powder-compact green body using a drill; a sintering step of sintering the powder-compact green body after drilling, wherein the drill used for drilling has a circular-arc shaped cutting edge on a point portion thereof.

公开(公告)号：US20190210110A1

公开(公告)日：2019-07-11

申请号：US16356572

申请日：2019-03-18

Applicant: SUMITOMO ELECTRIC SINTERED ALLOY, LTD

Inventor： Yasunori Sonoda ,  Ryota Take

IPC: B22F3/16 ,  B22F1/00

CPC classification number: B22F3/162 ,  B22F1/007 ,  B22F2301/35 ,  B22F2998/10 ,  C22C38/00 ,  C22C38/04 ,  C22C38/08 ,  C22C38/12 ,  C22C38/16 ,  C22C38/18 ,  C22C38/22 ,  C22C38/44 ,  B22F3/02 ,  B23B1/00 ,  B22F3/10

Abstract: Provided is a method for manufacturing a sintered component having a hole formed therein, in which a sintered component having no defect, such as cracks, can be manufactured with good productivity and also a reduction in tool life accompanied by forming the hole can be suppressed. The method for manufacturing a sintered component includes a molding step of press-molding a raw material powder containing a metal powder and thus fabricating a green body; a drilling step of forming a hole in the green body using a candle-type drill and thus forming a thin-walled portion, of which a thickness Gt as measured between an inner circumferential surface of the hole and an outer surface of the green body is smaller than a diameter Gd of the hole; and a sintering step of sintering the green body after the drilling step.

公开(公告)号：US11524336B2

公开(公告)日：2022-12-13

申请号：US17226753

申请日：2021-04-09

Applicant: Sumitomo Electric Sintered Alloy, Ltd.

Inventor： Ryota Take

IPC: B29C67/04 ,  B22F3/16 ,  B22F3/00 ,  B22F3/24

Abstract: A sintered body manufacturing apparatus includes a compacting apparatus configured to press a raw powder containing a metal powder into a green compact, a machining apparatus configured to perform a cutting operation on the green compact to produce an unsintered materials, and a green compact conveying path configured to connect the compacting apparatus in series to the machining apparatus to convey green compacts one by one from the compacting apparatus to the machining apparatus.

公开(公告)号：US11325186B2

公开(公告)日：2022-05-10

申请号：US15535263

申请日：2015-12-08

Applicant: SUMITOMO ELECTRIC SINTERED ALLOY, LTD. ,  NIKKEN TOOL CO., LTD.

Inventor： Yasunori Sonoda ,  Ryota Take ,  Fumihiro Matsumoto ,  Tsuguru Sugimoto

IPC: B22F3/16 ,  B23B51/02 ,  C22C38/00 ,  B22F5/10 ,  B22F5/06

Abstract: Provided is a method for manufacturing a sintered component, which can suppress occurrence of edge chipping when a through-hole is formed in a powder-compact green body and also has a good productivity. The method for manufacturing a sintered component includes a molding step of press-molding a raw material powder containing a metal powder and thus fabricating a powder-compact green body; a drilling step of forming a hole in the powder-compact green body using a drill; a sintering step of sintering the powder-compact green body after drilling, wherein the drill used for drilling has a circular-arc shaped cutting edge on a point portion thereof.

公开(公告)号：US11305347B2

公开(公告)日：2022-04-19

申请号：US16922287

申请日：2020-07-07

Applicant: SUMITOMO ELECTRIC SINTERED ALLOY, LTD. ,  NIKKEN TOOL CO., LTD.

Inventor： Yasunori Sonoda ,  Ryota Take ,  Fumihiro Matsumoto ,  Tsuguru Sugimoto

IPC: B22F3/16 ,  B23B51/02 ,  C22C38/00 ,  B22F5/10 ,  B22F5/06

Abstract: Provided is a method for manufacturing a sintered component, which can suppress occurrence of edge chipping when a through-hole is formed in a powder-compact green body and also has a good productivity. The method for manufacturing a sintered component includes a molding step of press-molding a raw material powder containing a metal powder and thus fabricating a powder-compact green body; a drilling step of forming a hole in the powder-compact green body using a drill; a sintering step of sintering the powder-compact green body after drilling, wherein the drill used for drilling has a circular-arc shaped cutting edge on a point portion thereof.

公开(公告)号：US20190217388A1

公开(公告)日：2019-07-18

申请号：US15739387

申请日：2016-03-14

Applicant: Sumitomo Electric Sintered Alloy, Ltd.

Inventor： Ryota Take

IPC: B22F3/16 ,  B22F3/24 ,  B22F3/00

CPC classification number: B22F3/162 ,  B22F3/003 ,  B22F3/24 ,  B22F2003/247 ,  B22F2998/10 ,  B22F2999/00 ,  B22F3/02 ,  B22F3/10

Abstract: A sintered body manufacturing apparatus includes a compacting apparatus configured to press a raw powder containing a metal powder into a green compact, a machining apparatus configured to perform a cutting operation on the green compact to produce an unsintered materials, and a green compact conveying path configured to connect the compacting apparatus in series to the machining apparatus to convey green compacts one by one from the compacting apparatus to the machining apparatus.