公开(公告)号：JP2012144801A

公开(公告)日：2012-08-02

申请号：JP2011024946

申请日：2011-02-08

Applicant: Jfe Steel Corp ,  Jfeスチール株式会社

Inventor： MAETANI TOSHIO ,  OZAKI YUKIKO ,  ONO TOMOSHIGE ,  KONO TAKASHI

IPC: B22F1/00

Abstract: PROBLEM TO BE SOLVED: To provide mixed powder with which a sintered body having both excellent machinability and drill cuttability can be obtained.SOLUTION: The mixed powder for powder metallurgy is obtained by mixing iron-based powder, powder for an alloy, powder for improving cuttability and lubricant powder. The powder for improving cuttability includes powder capable of forming an SiO-MgO amorphous phase or an SiO-MgO-alkali metal oxide amorphous phase and an oxide phase including SiOor magnesium oxide (MgO). Examples of the powder for improving cuttability includes enstatite powder, talcum powder, kaolin powder, mica powder, water-granulated slag powder, magnesium oxide (MgO) powder, and mixed powder of SiOand MgO. Further, the powder for improving cuttability may be blended with metal boride powder and metal nitride powder serving as hard metal compound particles and MnS and CaFserving as soft metal compound particles. The sintered body produced from the mixed powder has a base phase in which a soft metal compound phase having a hardness lower than the average hardness of the base phase and a hard metal compound phase having a hardness higher than the average hardness of the base phase are dispersed, thus having excellent cuttability including both excellent lathe cuttability and cuttability.

Abstract translation: 要解决的问题：提供可以获得具有优异的机械加工性和钻孔切割性的烧结体的混合粉末。

解决方案：粉末冶金用混合粉末是通过混合铁基粉末，合金粉末，提高可切削性的粉末和润滑剂粉末而得到的。 用于提高切割性的粉末包括能够形成SiO 2 -MgO非晶相或SiO 2的金属粉末 氧化物非晶相和氧化物相，包括SiO 2 和MgO。 此外，用于提高切割性的粉末可以与用作硬质金属化合物颗粒的金属硼化物粉末和金属氮化物粉末以及用作软金属化合物颗粒的MnS和CaF 2 共混。 由混合粉末制造的烧结体具有基础相，其中硬度低于基体相的硬度的软金属化合物相和硬度高于基体相的硬度的硬质金属化合物相是 分散，因此具有优异的可切削性，包括优异的车床切削性和切削性。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2011122198A

公开(公告)日：2011-06-23

申请号：JP2009280055

申请日：2009-12-10

Applicant: Jfe Steel Corp ,  Jfeスチール株式会社

Inventor： OZAKI YUKIKO ,  ONO TOMOSHIGE ,  KONO TAKASHI ,  MAETANI TOSHIO

IPC: B22F1/00 ,  C22C33/02

Abstract: PROBLEM TO BE SOLVED: To provide mixed powders for powder metallurgy which can obtain a sintered compact combining excellent machinability and drill cuttability.
SOLUTION: Metal powder is mixed with powder for an alloy, powder for improving cuttability and lubricant powder. Preferably, the powder for improving cuttability is composed of soft metal compound powder and hard metal compound powder, and the blending amount of the hard metal compound powder is controlled to 0.01 to 0.5% and the blending amount of the soft metal compound powder is controlled to 0.01 to 1.0% in mass% to the total content of the metal powder, the powder for an alloy and the powder for improving cuttability. Preferably, the hard metal compound powder is made of metal boride powder, and further, among metal borides, one or more selected from TiB
2 , ZrB
2 and NbB
2 are used. Besides, the soft metallic compound powder can be illustrated by the powder of talc, enstatite, kaolin, mica, fluorite, water-granulated slag or the like. The sintered compact produced from such mixed powder is made into the one having a structure, into the base phase, the grains of a soft metal compound having a hardness lower than the average hardness of the base phase and the grains of a hard metal compound having high hardness are dispersed, thus having excellent cuttability and combining excellent machinability and the cuttability.
COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：提供粉末冶金用混合粉末，其可获得具有优异的可加工性和钻孔切割性的烧结体。

解决方案：将金属粉末与合金粉末混合，提高可切削性的粉末和润滑剂粉末。 优选地，用于提高切割性的粉末由软金属化合物粉末和硬质金属化合物粉末组成，并且将硬质金属化合物粉末的配合量控制在0.01〜0.5％，将软质金属化合物粉末的配合量控制在 相对于金属粉末的总含量为0.01〜1.0质量％，合金用粉末和切割性提高的粉末。 优选地，硬质金属化合物粉末由金属硼化物粉末制成，此外，在金属硼化物中，选自TiB 2 SBB，SBB 2，SBB 2， 2 。 此外，软质金属化合物粉末可以通过滑石，顽辉石，高岭土，云母，萤石，水粒状渣等的粉末来说明。 将由这种混合粉末制成的烧结体制成具有下述结构的烧结体：在基体相中，硬度低于基础相的硬度的软质金属化合物的晶粒和具有 高硬度分散，因此具有优异的可切割性，并且结合了优异的机械加工性和可切割性。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2010043361A

公开(公告)日：2010-02-25

申请号：JP2009261253

申请日：2009-11-16

Applicant: Jfe Steel Corp ,  Jfeスチール株式会社

Inventor： UEDA MASATERU ,  UENOSONO SATOSHI ,  MAETANI TOSHIO

IPC: B22F1/02 ,  B22F1/00 ,  B22F3/00 ,  H01F1/24 ,  H01F41/02

Abstract: PROBLEM TO BE SOLVED: To provide a soft magnetic metallic powder having excellent magnetic flux density and compressibility and also having high insulation properties.
SOLUTION: The surface of pure iron powder in which the whole face or a part of the surface is provided with iron oxide is coated with at least one insulation layer selected from among oxides, carbonates and sulfates, further, the surface thereof is coated with a silicone resin layer, and the surface of the pure iron powder and the insulation layer are fixed by bond strengthening treatment.
COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：提供具有优异的磁通密度和压缩性并且还具有高绝缘性的软磁性金属粉末。 解决方案：其中整面或表面的一部分设置有氧化铁的纯铁粉的表面涂覆有选自氧化物，碳酸盐和硫酸盐中的至少一个绝缘层，此外，其表面是 涂覆有硅树脂层，纯铁粉末和绝缘层的表面通过粘结强化处理固定。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2009235517A

公开(公告)日：2009-10-15

申请号：JP2008084480

申请日：2008-03-27

Applicant: Jfe Steel Corp ,  Jfeスチール株式会社 ,  Toyota Central R&D Labs Inc ,  Toyota Motor Corp ,  トヨタ自動車株式会社 ,  株式会社豊田中央研究所

Inventor： FUJITA AKIRA ,  HIRATANI TATSUHIKO ,  MAETANI TOSHIO ,  KONO TAKASHI ,  NAKAMURA NAOMICHI ,  OISHI YUSUKE ,  HOSHINA EISUKE ,  YAMAGUCHI TOSHIYA ,  OKAMOTO DAISUKE ,  HATTORI TAKESHI

IPC: B22F1/00 ,  B22F1/02 ,  B22F3/00 ,  B22F3/24 ,  H01F1/24 ,  H01F27/255 ,  H01F41/02

Abstract: PROBLEM TO BE SOLVED: To provide metal powder for a dust core in which high insulation properties are maintained even when, for increasing the electric resistance between each powders, the amount of insulated coating applied to the surface of the powder is remarkably reduced or is made zero, and thus both of high saturated magnetic flux density and high electric resistance are improved.
SOLUTION: Pure iron powder having grain size of 10 to 500 μm and purity of ≥99 mass% is heated to the temperature range of 600 to 1,000°C, Si is concentrated on the surface of the pure iron powder in the above temperature range by vapor phase reaction, the average Si concentration in the depth range from the surface to 1 μm of the concentrated layer is controlled to 0.05 to 2 mass%, and thereafter, an Si oxide layer with a thickness of 1 to 500 nm is formed on the surface of the powder by oxidation treatment.
COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：为了提高高绝缘性能的金属粉末，即使为了提高各粉末之间的电阻，施加到粉末表面的绝缘涂层的量显着降低 或者为零，从而提高高饱和磁通密度和高电阻。 解决方案：将粒径为10〜500μm，纯度≥99质量％的纯铁粉末加热至600〜1000℃的温度范围，将Si浓缩在上述纯铁粉末的表面上 通过气相反应的温度范围，从浓缩层的表面到1μm的深度范围内的平均Si浓度被控制为0.05〜2质量％，之后，厚度为1〜500nm的Si氧化物层为 通过氧化处理在粉末表面形成。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2015048509A

公开(公告)日：2015-03-16

申请号：JP2013181183

申请日：2013-09-02

Applicant: Jfeスチール株式会社 ,  Jfe Steel Corp

Inventor： MAETANI TOSHIO ,  UNAMI SHIGERU

IPC: B22F9/20 ,  B22F9/04 ,  C21B13/00 ,  C22C35/00

Abstract: 【課題】鉄粉内でのMoの分布を均一にすることで、十分な強度と靱性を有する焼結体を得ることができるMo含有海綿鉄の製造方法を提案する。【解決手段】耐熱容器に充填前の酸化鉄に対してMo含有粉末を混合すると共に、該Mo含有粉末の混合を、該Mo含有粉末のMo換算質量と該酸化鉄のFe換算質量との合計量に対する該Mo換算質量が0.2〜10質量%の範囲で行う。【選択図】なし

Abstract translation: 要解决的问题：提供能够通过使铁粉中Mo分布均匀的方式获得具有足够强度和韧性的烧结体的含钼海绵铁的生产方法。溶液：将含Mo的粉末与氧化铁混合 在填充耐热容器之前，进行包含Mo的粉末的混合，使得含Mo粉末的Mo转化质量相对于Mo转化质量的总量和氧化铁的Fe转化质量为 在0.2-10质量％的范围内。

公开(公告)号：JP2011179031A

公开(公告)日：2011-09-15

申请号：JP2010041772

申请日：2010-02-26

Applicant: Jfe Steel Corp ,  Jfeスチール株式会社

Inventor： OZAKI YUKIKO ,  ONO TOMOSHIGE ,  KONO TAKASHI ,  MAETANI TOSHIO

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

Abstract: PROBLEM TO BE SOLVED: To provide a powdery mixture for powder metallurgy which can provide a sintered compact having excellent machinability and drill cuttability in combination.
SOLUTION: A metal powder is mixed with a powder for alloying, a powder for improving machinability and a lubricant powder. Preferably, the powder for improving machinability consists of a soft metal compound powder and a hard metal compound powder, and as for the blending quantity thereof, by mass% based on the total content of the metal powder, the powder for alloying and the powder for improving machinability, that of the hard metal compound powder is controlled to 0.1 to 0.5%, and that of the soft metal compound powder is controlled to 0.01 to 1.0%. As the hard metal compound powder, metal nitride powder is used. The metal nitride is preferably composed of one or more kinds selected from TiN, AlN and Si
3 N
4 . On the other hand, as the soft metal compound powder, the powder of talc, enstatite, kaolin, mica, fluorite, water-granulated slag or the like is exemplified. The sintered compact produced from the same powdery mixture is made into a sintered compact excellent in cuttability wherein the grains of the soft metal compound with a hardness lower than that of the average hardness of the base phase and the grains of the hard metallic compound with a high hardness are dispersed into the base phase, and excellent machinability and excellent cuttability are combined.
COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：提供粉末冶金粉末混合物，其可以提供具有优异的机械加工性和钻孔切割性的烧结体。 解决方案：将金属粉末与用于合金化的粉末，用于改善切削性的粉末和润滑剂粉末混合。 优选地，用于提高机械加工性的粉末由软质金属化合物粉末和硬质合金粉末构成，其配合量以质量％计，以金属粉末的总含量，合金化粉末和粉末 提高机械加工性，将硬质合金粉末的切削性控制在0.1〜0.5％，软质化合物粉末的控制为0.01〜1.0％。 作为硬质合金粉末，使用金属氮化物粉末。 金属氮化物优选由选自TiN，AlN和Si 3 N 3 SB 4中的一种或多种组成。 另一方面，作为软质金属化合物粉末，可举出滑石，顽辉石，高岭土，云母，萤石，水粒状渣等的粉末。 将由相同的粉末状混合物制成的烧结体制成切削性优异的烧结体，其中硬度低于基础相的硬度的软金属化合物的晶粒和硬质金属化合物的晶粒与 高硬度分散在基体相中，并且加工性优异，切割性优良。 版权所有（C）2011，JPO＆INPIT