公开(公告)号：US09352393B2

公开(公告)日：2016-05-31

申请号：US14650092

申请日：2013-12-24

Applicant: JFE STEEL CORPORATION

Inventor： Tomoshige Ono ,  Yukiko Ozaki ,  Takashi Kawano

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

CPC classification number: B22F1/0011 ,  B22F1/0059 ,  B22F1/0062 ,  B22F1/02 ,  B22F1/025 ,  C22C33/0207 ,  Y10T428/2991

Abstract: An iron-based powder for powder metallurgy effectively prevents agglomeration of a lubricant, has excellent flowability, can evenly fill thin-walled cavities, keeps the ejection force after formation low, and does not lower sintered body strength by adhering either or both of an alloy component and a cutting ability improving agent to the surface of iron powder with a binder that has a melting point of 150° C. or lower, adhering carbon black to the surface of the binder, and setting the amount of free binder to 0.02 mass % or less.

Abstract translation: 用于粉末冶金的铁基粉末有效地防止了润滑剂的团聚，具有优异的流动性，可以均匀地填充薄壁空腔，使形成后的喷射力保持不变，并且通过粘合合金中的任一种或两者不降低烧结体的强度 组合物和切割能力改进剂加入到具有熔点为150℃或更低的粘合剂的铁粉表面上，将炭黑粘合到粘合剂的表面，并将游离粘合剂的量设定为0.02质量％ 或更少。

公开(公告)号：US20160214171A1

公开(公告)日：2016-07-28

申请号：US15024628

申请日：2014-08-26

Applicant: JFE STEEL CORPORATION

Inventor： Toshio Maetani ,  Shigeru Unami ,  Tomoshige Ono ,  Yukiko Ozaki

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

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: 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 %.

Abstract translation: 本发明提供一种粉末冶金用合金钢粉末，其能够在使用其的烧结体中实现高强度和高韧性。 本公开的用于粉末冶金的合金钢粉末包括复合合金钢粉末和石墨粉末。 复合合金钢粉末的比表面积为0.100m 2 / g以上，Mo含量在0.2质量％〜1.5质量％的范围内，石墨粉末含量相对于粉末合金钢粉末的100质量％ 冶金在0.1质量％至1.0质量％的范围内。

公开(公告)号：US20160151837A1

公开(公告)日：2016-06-02

申请号：US14905054

申请日：2014-01-23

Applicant: JFE STEEL CORPORATION

Inventor： Kouichi Nushiro ,  Toshio Maetani ,  Tomoshige Ono ,  Yukiko Ozaki

IPC: B22F1/00 ,  B22F3/16 ,  B22F3/00 ,  B22F9/04

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

Abstract: A mixed powder for powder metallurgy includes a machinability improvement powder that is crystalline layered alkaline silicate heat-treated at 400° C. to 1100° C. and whose mix proportion is in an amount of 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 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.

Abstract translation: 粉末冶金用混合粉末包括：机械加工性改善粉末，其为在400℃〜1100℃下热处理的结晶层状碱性硅酸盐，其混合比例为0.01〜1.0质量％ 铁基粉末，合金粉末和可切削性改进粉末的含量。 这样的混合粉末不仅能够使烧结体的烧结不会对烧结炉的环境产生不利影响，而且能够获得具有优异的车床切削性和优异的钻削加工性的烧结体。