公开(公告)号：KR20180022903A

公开(公告)日：2018-03-06

申请号：KR20187002723

申请日：2016-09-12

Applicant: JFE STEEL CORP

Inventor： KOBAYASHI AKIO ,  NAKAMURA NAOMICHI ,  MAETANI TOSHIO ,  SONOBE AKIO ,  SATO ITSUYA

IPC: B22F9/04 ,  B22F1/00 ,  B22F3/12 ,  B22F5/00 ,  C22C33/02 ,  C22C38/16

CPC classification number: B22F1/00 ,  C22C33/02 ,  C22C38/00 ,  C22C38/16

Abstract: Ni 를함유하지않음에도불구하고, Ni 를함유하는경우와동등이상의우수한인장강도및 인성을갖는소결체를얻을수 있는분말야금용혼합분말을제공한다. 철기분말에, Mo 함유분말과 Cu 함유분말을혼합하여원료혼합분말로하는제 1 혼합공정과, 상기원료혼합분말을열처리함으로써, 상기철기분말표면에 Mo 및 Cu 를확산부착시켜부분확산합금강분으로하는확산부착공정과, 상기부분확산합금강분에, 흑연분을혼합하여분말야금용혼합분말로하는제 2 혼합공정을갖는분말야금용혼합분말의제조방법으로서, 상기철기분말의평균입경이 30 ∼ 120 ㎛이고, 상기 Cu 함유분말로서아산화구리분을사용하고, 상기분말야금용혼합분말의성분조성을, Mo : 0.2 ∼ 1.5 mass%, Cu : 0.5 ∼ 4.0 mass%, C : 0.1 ∼ 1.0 mass%, 그리고잔부의 Fe 및불가피불순물로이루어지는성분조성으로하는, 분말야금용혼합분말의제조방법.

Abstract translation: 本发明提供一种粉末冶金用混合粉末，其能够得到尽管不含有Ni，与含有Ni的烧结体同等或以上的优异的拉伸强度和延展性的烧结体。 该粉末冶金用混合粉末的制造方法包括：第一混合工序，在该第一混合工序中，将含有Mo的粉末和含有Cu的粉末混合到铁基粉末中，得到原料混合粉末; 扩散/粘附步骤，其中通过对所述原料混合粉末进行热处理，通过将所述Mo和Cu扩散并粘附到所述铁基粉末的表面上来获得部分扩散的合金钢粉; 以及第二混合步骤，其中通过将石墨粉末混合到部分扩散的合金钢粉中获得粉末冶金用混合粉末。 铁基粉末的平均粒径为30-120μm。 使用氧化亚铜粉末作为含Cu粉末。 粉末冶金用混合粉末的成分组成为Mo：0.2〜1.5质量％，Cu：0.5〜4.0质量％，C：0.1〜1.0质量％，余量由Fe和不可避免的杂质构成。

公开(公告)号：WO2015045273A1

公开(公告)日：2015-04-02

申请号：PCT/JP2014004383

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

CPC classification number: B22F1/0074 ,  B22F1/0011 ,  B22F3/16 ,  B22F9/02 ,  B22F2301/35 ,  B22F2304/10 ,  C22C33/0264 ,  C22C38/00 ,  C22C38/002 ,  C22C38/02 ,  C22C38/12 ,  C22C38/16

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.

Abstract translation: 根据本发明，粉末冶金用合金钢粉末的比表面积为0.100m 2 / g以上，含有0.2〜1.5质量％的Mo，含有石墨粉末 相对于粉末冶金用合金钢粉末为100质量％0.1〜1.0质量％的范围。 因此，可以从用于粉末冶金的合金钢粉末获得高强度结合强度和韧性的烧结体。

公开(公告)号：WO2014196123A8

公开(公告)日：2015-10-22

申请号：PCT/JP2014002343

申请日：2014-04-25

Applicant: JFE STEEL CORP

Inventor： MAETANI TOSHIO ,  UNAMI SHIGERU

IPC: B22F1/02 ,  B22F1/00 ,  C22C33/02 ,  C22C38/00 ,  C22C38/12 ,  C22C38/16

CPC classification number: B22F1/0003 ,  B22F1/0085 ,  B22F1/025 ,  B22F3/16 ,  B22F9/04 ,  B22F2301/35 ,  B22F2302/45 ,  C21D6/00 ,  C22C33/0264 ,  C22C38/00 ,  C22C38/002 ,  C22C38/12 ,  C22C38/16

Abstract: The present invention makes it possible to obtain an alloy steel powder for powder metallurgy that comprises an iron-based powder as a main component thereof and that can be used to produce a sintered body that has high levels of both strength and toughness as a result of comprising each of the following: an iron-based powder that contains a reduced iron powder; 0.2-1.5 mass% of Mo as a percentage of the entire alloy steel powder; and 0.5-4.0 mass% of Cu powder and 0.1-1.0 mass% of graphite powder as percentages of the entire alloy steel powder.

Abstract translation: 本发明使得可以获得包含铁基粉末作为其主要成分的粉末冶金用合金钢粉末，其可用于制造由于强度和韧性而具有高水平的强度和韧性的烧结体 包括以下各项：含有还原铁粉的铁基粉末; 0.2-1.5质量％的Mo占整个合金钢粉的百分比; 和0.5-4.0质量％的Cu粉末和0.1-1.0质量％的石墨粉末，作为整个合金钢粉末的百分数。

公开(公告)号：WO2016088333A8

公开(公告)日：2017-04-27

申请号：PCT/JP2015005842

申请日：2015-11-24

Applicant: JFE STEEL CORP

Inventor： TAKASHITA TAKUYA ,  KOBAYASHI AKIO ,  NAKAMURA NAOMICHI ,  MAETANI TOSHIO ,  SONOBE AKIO ,  SATO ITSUYA

IPC: B22F1/00 ,  C22C33/02 ,  C22C38/00 ,  C22C38/16

CPC classification number: B22F1/00 ,  C22C33/02 ,  C22C38/00 ,  C22C38/16

Abstract: An Fe-Mo-Cu-C-type alloy steel powder for powder metallurgy, wherein the alloy steel powder contains 0.2-1.5 mass% of Mo, 0.5-4.0 mass% of Cu, and 0.1-1.0 mass% of C, the remainder comprising Fe and unavoidable impurities, the average particle diameter of an iron-based powder being set to 30-120 µm and the average particle diameter of a Cu powder being set to 25 µm or less, whereby an alloy steel powder for powder metallurgy is obtained whereby the mechanical characteristics of a part obtained by sintering a press-molded article of the powder and furthermore carburizing/quenching/tempering the sintered press-molded article have tensile strength, toughness, or sintered density at least equivalent to that of a Ni-added part while not including Ni as a component.

Abstract translation: 一种粉末冶金用Fe-Mo-Cu-C系合金钢粉，其特征在于，合金钢粉含有Mo：0.2〜1.5质量％，Cu：0.5〜4.0质量％，C：0.1〜1.0质量％ 含有Fe和不可避免的杂质，将铁基粉末的平均粒径设定为30〜120μm，将Cu粉末的平均粒径设定为25μm以下，从而得到粉末冶金用合金钢粉末 由此通过烧结粉末的压制成型制品并且进一步对烧结的压制成型制品进行渗碳/淬火/回火而获得的部件的机械特性具有至少等同于添加Ni的拉伸强度，韧性或烧结密度 而不包括镍作为一个组成部分。

公开(公告)号：WO2015008406A8

公开(公告)日：2015-11-12

申请号：PCT/JP2014000342

申请日：2014-01-23

Applicant: JFE STEEL CORP

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

IPC: B22F1/00

CPC classification number: B22F1/007 ,  B22F1/0059 ,  B22F3/004 ,  B22F3/16 ,  B22F9/04 ,  C22C33/02

Abstract: According to the present invention, a machining-improving powder is a crystalline layered alkali silicate heat-treated at a temperature range of 400-1100°C, and the mixture constituting the machining-improving powder is set such that an iron-based powder takes up 0.01-1.0 mass% in relation to the total amount of alloy powder and machining-improving powder. As a result, not only can sintering of a compact be performed in a sintering furnace without having any negative effects on the environment inside the furnace, but it is also possible to attain a mixed powder for powder metallurgy by which it is possible to obtain a sintered body having both exceptional lathing properties and exceptional drilling properties.

Abstract translation: 根据本发明，加工改善粉末是在400-1100℃的温度范围内热处理的结晶层状碱性硅酸盐，构成加工改性粉末的混合物的设定使得铁基粉末 相对于合金粉末和机械改进粉末的总量相对于0.01-1.0质量％。 结果，不仅可以在烧结炉中进行烧结而不会对炉内的环境产生任何负面影响，而且可以获得粉末冶金用混合粉末，通过该粉末冶金可以获得 具有特殊的车床特性和卓越的钻孔性能的烧结体。

公开(公告)号：CA2911031A1

公开(公告)日：2014-12-11

申请号：CA2911031

申请日：2014-04-25

Applicant: JFE STEEL CORP

Inventor： MAETANI TOSHIO ,  UNAMI SHIGERU

IPC: B22F1/02 ,  B22F1/00 ,  C22C33/02 ,  C22C38/00 ,  C22C38/12 ,  C22C38/16

Abstract: The present invention makes it possible to obtain an alloy steel powder for powder metallurgy that comprises an iron-based powder as a main component thereof and that can be used to produce a sintered body that has high levels of both strength and toughness as a result of comprising each of the following: an iron-based powder that contains a reduced iron powder; 0.2-1.5 mass% of Mo as a percentage of the entire alloy steel powder; and 0.5-4.0 mass% of Cu powder and 0.1-1.0 mass% of graphite powder as percentages of the entire alloy steel powder.

公开(公告)号：CA2667843A1

公开(公告)日：2008-08-07

申请号：CA2667843

申请日：2007-01-30

Applicant: JFE STEEL CORP

Inventor： MAETANI TOSHIO ,  UETA MASATERU ,  UENOSONO SATOSHI

IPC: B22F1/00 ,  B22F3/00 ,  B22F9/08 ,  C22C38/00 ,  C22C38/04 ,  H01F1/24

Abstract: A pure iron powder which contains as impurities, in terms of mass%, up to 0.005% C, 0.01-0.03%, excluding 0.01%, Si, 0.03-0.07% Mn, up to 0.01% P, up to 0.01% S, up to 0.10% O, and up to 0.001% N. The iron powder particles ea ch is composed of up to four crystal grains on the average and have a micro- Vickers hardness (Hv) of 80 or lower on the average. The iron powder is suit able for use in parts with excellent magnetic properties and in high-density sintered parts, has excellent productivity, and has high compressibility. T he iron powder preferably has a roundness of 0.7 or higher.

公开(公告)号：SE541267C2

公开(公告)日：2019-05-28

申请号：SE1751537

申请日：2016-09-12

Applicant: JFE STEEL CORP

Inventor： KOBAYASHI AKIO ,  SONOBE AKIO ,  SATO ITSUYA ,  SUGIMURA KENJI ,  NAKAMURA NAOMICHI ,  MAETANI TOSHIO

IPC: B22F1/00 ,  C22C33/02 ,  C22C38/00 ,  C22C38/16

Abstract: A mixed powder for powder metallurgy that, despite not containing Ni, enables the production of a sintered body having excellent tensile strength and toughness at least as high as those in the case of containing Ni is provided. A method of producing a mixed powder for powder metallurgy comprises: mixing an iron-based powder with a Mo-containing powder and a Cu-containing powder, to obtain a raw material mixed powder; heat-treating the raw material mixed powder to cause Mo and Cu to diffusionally adhere to a surface of the iron-based powder, to obtain a partially diffusion-alloyed steel powder; and mixing the partially diffusion-alloyed steel powder with a graphite powder, to obtain a mixed powder for powder metallurgy, wherein the iron-based powder has an average particle size of 30 μm to 120 μm, a cuprous oxide powder is used as the Cu-containing powder, and the mixed powder for powder metallurgy has a chemical composition containing Mo: 0.2 mass% to 1.5 mass%, Cu: 0.5 mass% to 4.0 mass%, and C: 0.1 mass% to 1.0 mass%, with a balance being Fe and incidental impurities.

公开(公告)号：SE540965C2

公开(公告)日：2019-01-29

申请号：SE1650273

申请日：2014-08-26

Applicant: JFE STEEL CORP

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

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

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