公开(公告)号：SE1650056A1

公开(公告)日：2016-01-18

申请号：SE1650056

申请日：2014-01-23

Applicant: JFE STEEL CORP

Inventor： NUSHIRO KOUICHI ,  MAETANI TOSHIO ,  ONO TOMOSHIGE ,  OZAKI YUKIKO

IPC: B22F1/00

公开(公告)号：CA2642254C

公开(公告)日：2013-07-23

申请号：CA2642254

申请日：2007-02-14

Applicant: JFE STEEL CORP

Inventor： OZAKI YUKIKO ,  ONO TOMOSHIGE ,  UNAMI SHIGERU ,  FUJINAGA MASASHI

IPC: B22F3/02 ,  B22F1/00 ,  C22C33/02 ,  C22C38/00

Abstract: An iron-based powder mixture according to the invention contains an iron-based powder. Additives are provided comprising at least one selected from talc and steatite in an amount of 0.01 to 0.5 mass% in total in the iron-based powder mixture, fatty acid amide as a binder in an amount of 0.01 to 0.5 mass% in total in the iron-based powder mixture, and metallic soap in an amount of 0.01 to 0.5 mass% in the iron-based powder mixture.

公开(公告)号：CA2699033A1

公开(公告)日：2009-03-19

申请号：CA2699033

申请日：2008-09-09

Applicant: JFE STEEL CORP

Inventor： ONO TOMOSHIGE ,  UNAMI SHIGERU ,  KAWANO TAKASHI ,  OZAKI YUKIKO ,  FUJIMOTO KYOKO

IPC: B22F1/00 ,  B22F1/02 ,  B22F3/02

Abstract: Disclosed is an iron-based powder for powder metallurgy, which is obtained by making a flowability improver particle containing 50-100% by mass of carbon black adhere to the surface of an iron powder particle through a binder. This iron-based powder for powder metallurgy is excellent in flowability, and can be uniformly filled into a thin-walled cavity. This iron-based powder for powder metallurgy can be compacted with high ejection force, while maintaining sufficient strength for a sintered body during a sintering process that follows the compaction process.

公开(公告)号：CA2642254A1

公开(公告)日：2007-09-20

申请号：CA2642254

申请日：2007-02-14

Applicant: JFE STEEL CORP

Inventor： FUJINAGA MASASHI ,  OZAKI YUKIKO ,  UNAMI SHIGERU ,  ONO TOMOSHIGE

IPC: B22F3/02 ,  B22F1/00 ,  C22C33/02 ,  C22C38/00

Abstract: An iron-based powder mixture for powder metallurgy is provided, in which iron-based powder is blended with at least one selected from talc and steatite, and preferably further blended with metallic soap, thereby when a compacted body is sintered, furnace environment is not adversely affected, and excellent compaction performance is achieved even in a low temperature range of less than 100°C, and more preferably, an obtained sintered body has excellent machining performance.

公开(公告)号：PH12019501736A1

公开(公告)日：2020-03-16

申请号：PH12019501736

申请日：2019-07-26

Applicant: JFE STEEL CORP

Inventor： SASHI KAZUMICHI ,  ONO TOMOSHIGE ,  UNAMI SHIGERU

IPC: A01C1/06

Abstract: Provided are a seed-coating agent, coated seeds, and a seed-coating method that make it possible for reductions in germination speed to be suppressed for seeds that have been coated with a seed-coating agent that includes elemental iron. This seed-coating agent includes elemental iron and is used to coat the surface of seeds. The seed-coating agent is characterized in that the detected-intensity ratio Fe/FeO for Fe to FeO in an x-ray diffraction of the seed-coating agent is 1.0-12. These coated seeds have a coating layer formed on the surface thereof by means of the seed-coating agent that includes elemental iron. The coated seeds are characterized in that the detected-intensity ratio Fe/FeO for Fe to FeO in an x-ray diffraction of the coating layer is no more than 4.5

公开(公告)号：SE538041C2

公开(公告)日：2016-02-23

申请号：SE1551032

申请日：2013-12-24

Applicant: JFE STEEL CORP

Inventor： ONO TOMOSHIGE ,  OZAKI YUKIKO ,  KAWANO TAKASHI

IPC: B22F1/00 ,  B22F1/02

公开(公告)号：CA2893945A1

公开(公告)日：2014-07-03

申请号：CA2893945

申请日：2013-12-24

Applicant: JFE STEEL CORP

Inventor： ONO TOMOSHIGE ,  OZAKI YUKIKO ,  KAWANO TAKASHI

IPC: B22F1/00 ,  B22F1/02

Abstract: An iron-based powder for powder metallurgy, wherein: an alloying component and/or a machinability improver are adhered to the surface of an iron powder with a binder having a melting point of 150ºC or lower; carbon black is adhered to the surface of the binder; and the amount of a free binder is adjusted to 0.02 mass% or less. In this iron-based powder, the aggregation of a lubricant is inhibited. Therefore, the iron-based powder exhibits excellent fluidity, can be uniformly filled into a thin cavity for forming a thin-wall product, permits a reduction in the withdrawal force necessitated after molding, and does not cause the strength degradation of a sintered body.

公开(公告)号：CA2916153C

公开(公告)日：2018-02-06

申请号：CA2916153

申请日：2014-01-23

Applicant: JFE STEEL CORP

Inventor： NUSHIRO KOUICHI ,  MAETANI TOSHIO ,  ONO TOMOSHIGE ,  OZAKI YUKIKO

IPC: B22F1/00

Abstract: A mixed powder for powder metallurgy includes a machinability improvement powder that is crystalline layered alkaline silicate heat-treated in a range from 400 °C to 1100 °C and whose mix proportion is in a range from 0.01% to 1.0% by mass in terms of total content of an iron-based powder, an alloying powder, and the machinability improvement powder. Such a mixed powder for powder metallurgy not only enables a compact to be sintered without adversely affecting the environment in a sintering furnace, but also enables a sintered body having excellent lathe machinability and excellent drill machinability to be obtained.

公开(公告)号：CA2922018C

公开(公告)日：2018-01-16

申请号：CA2922018

申请日：2014-08-26

Applicant: JFE STEEL CORP

Inventor： MAETANI TOSHIO ,  UNAMI SHIGERU ,  ONO TOMOSHIGE ,  OZAKI YUKIKO

IPC: B22F1/00 ,  C22C33/02 ,  C22C38/00

Abstract: Provided is an alloy steel powder for powder metallurgy that is capable of achieving both high strength and high toughness in a sintered body using the same. An alloy steel powder for powder metallurgy of this disclosure comprises a composite alloy steel powder and graphite powder. The composite alloy steel powder has a specific surface area of 0.100 m2/g or more and Mo content in a range of 0.2 mass% to 1.5 mass%, and the graphite powder content with respect to 100 mass% of the alloy steel powder for powder metallurgy is in a range of 0.1 mass% to 1.0 mass%.

公开(公告)号：CA2922018A1

公开(公告)日：2015-04-02

申请号：CA2922018

申请日：2014-08-26

Applicant: JFE STEEL CORP

Inventor： MAETANI TOSHIO ,  UNAMI SHIGERU ,  ONO TOMOSHIGE ,  OZAKI YUKIKO

IPC: B22F1/00 ,  C22C33/02 ,  C22C38/00

Abstract: According to the present invention, an alloy steel powder for powder metallurgy is regulated to have a specific surface area of 0.100 m2/g or larger, contain Mo in an amount in the range of 0.2-1.5 mass%, and contain a graphite powder in an amount in the range of 0.1-1.0 mass% per 100 mass% the alloy steel powder for powder metallurgy. Thus, a sintered object which combines strength and toughness on a high level can be obtained from the alloy steel powder for powder metallurgy.