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

申请人： JFE STEEL CORP

发明人： MAETANI TOSHIO ,  UNAMI SHIGERU ,  ONO TOMOSHIGE ,  OZAKI YUKIKO

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

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

摘要： 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.

摘要翻译： 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

申请人： JFE STEEL CORP

发明人： MAETANI TOSHIO ,  UNAMI SHIGERU

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

CPC分类号： 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

摘要： 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.

摘要翻译： 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

申请人： JFE STEEL CORP

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

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

CPC分类号： B22F1/00 ,  C22C33/02 ,  C22C38/00 ,  C22C38/16

摘要： 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.

摘要翻译： 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

申请人： JFE STEEL CORP

发明人： NUSHIRO KOUICHI ,  MAETANI TOSHIO ,  ONO TOMOSHIGE ,  OZAKI YUKIKO

IPC分类号： B22F1/00

CPC分类号： B22F1/007 ,  B22F1/0059 ,  B22F3/004 ,  B22F3/16 ,  B22F9/04 ,  C22C33/02

摘要： 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.

摘要翻译： 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。