公开(公告)号：US5273570A

公开(公告)日：1993-12-28

申请号：US840828

申请日：1992-02-25

申请人： Katsuaki Sato ,  Katsuhiko Tominaga ,  Tsutomu Saka ,  Osamu Kawamura ,  Teruo Takahashi ,  Arata Kakiuchi

发明人： Katsuaki Sato ,  Katsuhiko Tominaga ,  Tsutomu Saka ,  Osamu Kawamura ,  Teruo Takahashi ,  Arata Kakiuchi

IPC分类号： C22C33/02 ,  C22C38/00 ,  C22C38/54 ,  C22C29/00

CPC分类号： C22C33/0292 ,  C22C33/0207 ,  C22C33/0228

摘要： A secondary hardening type high temperature wear-resistant sintered alloy body comprising 0.4 to 15 wt. % of at least one species of metal carbide forming element which is selected from the group consisting of W, Mo, V, Ti, Nb, Ta and B; 5 to 35 wt. % of at least one species of austenite forming element which is selected from the group consisting of Ni, Co, Cu, and Cr; 0.2 to 1.2 wt. % of C; and 0.04 to 0.2 wt % of the remainder consisting essentially of Fe wherein the alloy body contains an austenite phase which is capable of martensitic transformation.

摘要翻译： 二次硬化型高温耐磨烧结合金体，其含有0.4〜15重量％ 选自W，Mo，V，Ti，Nb，Ta和B中的至少一种金属碳化物形成元素的％; 5〜35重量％ ％的至少一种奥氏体形成元素选自Ni，Co，Cu和Cr; 0.2〜1.2重量％ C％ 和0.04〜0.2重量％的余量基本上由Fe组成，其中合金体含有能够马氏体转变的奥氏体相。

公开(公告)号：US5466276A

公开(公告)日：1995-11-14

申请号：US087079

申请日：1993-07-07

申请人： Katsuaki Sato ,  Katsuhiko Tominaga ,  Tsutomu Saka ,  Osamu Kawamura ,  Teruo Takahashi ,  Arata Kakiuchi

发明人： Katsuaki Sato ,  Katsuhiko Tominaga ,  Tsutomu Saka ,  Osamu Kawamura ,  Teruo Takahashi ,  Arata Kakiuchi

IPC分类号： C22C33/02 ,  C22C38/00 ,  C22C38/54 ,  C22C28/00

CPC分类号： C22C33/0292 ,  C22C33/0207 ,  C22C33/0228

摘要： A secondary hardening type high temperature wear-resistant sintered alloy body comprising 0.4 to 15 wt. % of at least one species of metal carbide forming element which is selected from the group consisting of W, Mo, V, Ti, Nb, Ta and B; 5 to 35 wt. % of at least one species of austenite forming element which is selected from the group consisting of Ni, Co, Cu, and Cr; 0.2 to 1.2 wt. % of C; and 0.04 to 0.2 wt. % of Al consisting essentially the remainder of Fe, wherein the alloy body contains an austenite phase which is capable of martensitic transformation.

摘要翻译： 二次硬化型高温耐磨烧结合金体，其含有0.4〜15重量％ 选自W，Mo，V，Ti，Nb，Ta和B的至少一种金属碳化物形成元素的％; 5〜35重量％ ％的至少一种奥氏体形成元素选自Ni，Co，Cu和Cr; 0.2〜1.2重量％ C％ 和0.04至0.2wt。 Al的％基本上由余下的Fe组成，其中合金体含有能够马氏体转变的奥氏体相。

公开(公告)号：US5803037A

公开(公告)日：1998-09-08

申请号：US869845

申请日：1997-06-05

申请人： Osamu Kawamura ,  Teruo Takahashi ,  Arata Kakiuchi

发明人： Osamu Kawamura ,  Teruo Takahashi ,  Arata Kakiuchi

IPC分类号： F01L3/02 ,  C22C38/00 ,  C22C38/16 ,  F01L3/22 ,  F01L3/04

CPC分类号： F01L3/22

摘要： The invention is directed to a joined type valve seat which is joined into the cylinder head of an aluminum alloy in an internal combustion engine by resistance welding and, in particular, to an improved joined type valve seat superior in strength, rigidity, and abrasion resistance, whereby no cracks are caused when running the engine or when joining the valve seat to the engine block by resistance welding. The valve seat is made of a material having a tensile strength of 300 MPa or above, a radial crushing strength of 500 MPa or above, an elongation of 0.6% or more, a thermal conductivity of 15 W/(m.multidot.K) or above, a coefficient of thermal expansion of 10.times.10-.sup.6 (1/K) or above, and an electric resistivity of 50 .mu..OMEGA..multidot.cm or below.

摘要翻译： 本发明涉及一种连接型阀座，其通过电阻焊接连接到内燃机中的铝合金气缸盖中，特别涉及一种强度，刚度和耐磨性优异的改进的接合式阀座 从而在运行发动机时或通过电阻焊接将阀座与发动机缸体接合时不会产生裂纹。 阀座由拉伸强度为300MPa以上，径向抗压强度为500MPa以上，伸长率为0.6％以上，热导率为15W /（m×K）以上）的材料制成， 热膨胀系数为10×10 -6（1 / K）以上，电阻率为50μΩEGEGA×cm以下。

公开(公告)号：US07089902B2

公开(公告)日：2006-08-15

申请号：US10752090

申请日：2004-01-07

申请人： Kenichi Sato ,  Arata Kakiuchi ,  Teruo Takahashi ,  Masao Ishida ,  Hiroyuki Oketani

发明人： Kenichi Sato ,  Arata Kakiuchi ,  Teruo Takahashi ,  Masao Ishida ,  Hiroyuki Oketani

IPC分类号： F02N3/00 ,  B21K1/24

CPC分类号： B22F5/008 ,  B21K1/24 ,  B22F7/06 ,  B22F2998/00 ,  F01L3/02 ,  F01L2101/00 ,  F01L2103/00 ,  Y10T29/49306

摘要： A valve seat, press-fitted into a cylinder head of an internal combustion engine, containing an iron-based sintered alloy, includes a valve-seating section and a head-seating section. The valve-seating section and the head-seating section are monolithically formed by a sintering process and form a double layer structure. The valve-seating section includes a first iron-based sintered alloy member that has a porosity of 10 to 25 percent by volume and a sintered density of 6.1 to 7.1 g/cm3 and contains hard particles dispersed in a matrix. The head-seating section includes a second iron-based sintered alloy member that has a porosity of 10 to 20 percent by volume and a sintered density of 6.4 to 7.1 g/cm3.

摘要翻译： 包含铁基烧结合金的压入内燃机气缸盖的阀座包括阀座部和头座部。 阀座部分和头座部分通过烧结工艺整体地形成并形成双层结构。 阀座部分包括具有10至25体积％的孔隙率和6.1至7.1g / cm 3的烧结密度的第一铁基烧结合金构件，并且包含分散在 一个矩阵。 头座部分包括具有10至20体积％的孔隙率和6.4至7.1g / cm 3的烧结密度的第二铁基烧结合金构件。

公开(公告)号：US6139599A

公开(公告)日：2000-10-31

申请号：US378995

申请日：1999-08-23

申请人： Teruo Takahashi ,  Arata Kakiuchi ,  Kenichi Sato

发明人： Teruo Takahashi ,  Arata Kakiuchi ,  Kenichi Sato

IPC分类号： F01L3/02 ,  B22F3/26 ,  C22C33/02 ,  C22C38/00 ,  C22C38/20 ,  C22C38/22 ,  C22C38/24 ,  C22C38/56 ,  B22F5/00

CPC分类号： C22C33/0257 ,  C22C33/0207 ,  C22C38/20 ,  C22C38/22 ,  C22C38/24

摘要： A valve seat made of an iron base sintered alloy for internal combustion engines comprises of hard particles of hardness 700-1300 Hv dispersed by 3-20% by volume in a matrix phase comprising comprising of a 5-40% psarlite phase, a 20-60% fine carbide dispersed phase, and a 5-20% high alloy diffusd phase. The hard paricles are preferably selected from a group of Mo--Ni--Cr--Si--Co intermetallic compound particles, Cr--Mo--Co intermetallic compound particles, and Fe--Mo alloy particles. The iron base sinteed alloy is conpised of, by weight, C: 0.2-2.0%, Cr: 1.0-9.0%, Mo: 1.0-9.0%, Si: 0.1-1.0%, W: 1.0-50%, V: 0.2-3.0%, one or more Cu, Co and Ni of 0.5-10.0% in total, and the remainder substantial Fe.

摘要翻译： 由用于内燃机的铁基烧结合金制成的阀座由硬度为700-1300Hv的硬质颗粒组成，基体相分散在3-20％（体积）的硬质颗粒中，包括5-40％的石墨相， 60％细小的碳化物分散相和5-20％的高合金扩散相。 硬粒子优选选自Mo-Ni-Cr-Si-Co金属间化合物颗粒，Cr-Mo-Co金属间化合物颗粒和Fe-Mo合金颗粒。 铁基合金按C：0.2-2.0％，Cr：1.0-9.0％，Mo：1.0-9.0％，Si：0.1-1.0％，W：1.0-50％，V：0.2 -3.0％，一个或多个Cu，Co和Ni总计为0.5-10.0％，其余为Fe。

公开(公告)号：US07273508B2

公开(公告)日：2007-09-25

申请号：US11070668

申请日：2005-03-03

申请人： Kenichi Sato ,  Arata Kakiuchi ,  Teruo Takahashi ,  Tomoki Okita ,  Masahiro Takehana

发明人： Kenichi Sato ,  Arata Kakiuchi ,  Teruo Takahashi ,  Tomoki Okita ,  Masahiro Takehana

IPC分类号： C22C33/02

CPC分类号： F01L3/02 ,  C22C1/02 ,  C22C1/1084 ,  C22C19/07 ,  C22C33/0207 ,  C22C33/0278 ,  F01L2101/00 ,  F01L2103/00 ,  F01L2800/18 ,  F01L2820/01

摘要： An iron-based sintered alloy material for a valve seat having improved wear resistance and reduced opposite aggressibility to a mating valve. The iron-based sintered alloy material contains 10% to 20% by area of first hard particles and 15% to 35% by area of second hard particles dispersed in a base matrix phase, the first and the second hard particles accounting for 25% to 55% by area in total. The first hard particles are composed of a cobalt-based intermetallic compound and have a size of 10 to 150 μm and a hardness of at least 500HV0.1 and less than 800HV0.1. The second hard particles are composed of a cobalt-based intermetallic compound and have a size of 10 to 150 μm and a hardness of at least 800HV0.1 and less than 1100HV0.1. Solid lubricant particles may also be dispersed in the base matrix phase.

摘要翻译： 一种用于阀座的铁基烧结合金材料，其具有改进的耐磨性并且降低了与配合阀的相反的侵蚀性。 铁基烧结合金材料含有第一硬质粒子的10〜20％的面积和分散在基体相的第二硬质粒子的面积的15〜35％，第一和第二硬质粒子占25％〜 共计55％。 第一硬质颗粒由钴基金属间化合物组成，其尺寸为10至150μm，硬度至少为500HV0.1且小于800HV0.1。 第二硬颗粒由钴基金属间化合物组成，其尺寸为10至150μm，硬度至少为800HV0.1且小于1100HV0.1。 固体润滑剂颗粒也可以分散在基础基质相中。

公开(公告)号：US20050193861A1

公开(公告)日：2005-09-08

申请号：US11070668

申请日：2005-03-03

申请人： Kenichi Sato ,  Arata Kakiuchi ,  Teruo Takahashi ,  Tomoki Okita ,  Masahiro Takehana

发明人： Kenichi Sato ,  Arata Kakiuchi ,  Teruo Takahashi ,  Tomoki Okita ,  Masahiro Takehana

IPC分类号： F01L3/02 ,  B22F3/12 ,  B22F5/00 ,  C22C1/04 ,  C22C19/07 ,  C22C33/02 ,  C22C38/00 ,  C22C38/10 ,  C22C38/30 ,  C22C38/52 ,  C22C38/56

CPC分类号： F01L3/02 ,  C22C1/02 ,  C22C1/1084 ,  C22C19/07 ,  C22C33/0207 ,  C22C33/0278 ,  F01L2101/00 ,  F01L2103/00 ,  F01L2800/18 ,  F01L2820/01

摘要： An iron-based sintered alloy material for a valve seat having improved wear resistance and reduced opposite aggressibility to a mating valve. The iron-based sintered alloy material contains 10% to 20% by area of first hard particles and 15% to 35% by area of second hard particles dispersed in a base matrix phase, the first and the second hard particles accounting for 25% to 55% by area in total. The first hard particles are composed of a cobalt-based intermetallic compound and have a size of 10 to 150 μm and a hardness of at least 500HV0.1 and less than 800HV0.1. The second hard particles are composed of a cobalt-based intermetallic compound and have a size of 10 to 150 μm and a hardness of at least 800HV0.1 and less than 1100HV0.1. Solid lubricant particles may also be dispersed in the base matrix phase.

摘要翻译： 一种用于阀座的铁基烧结合金材料，其具有改进的耐磨性并且降低了与配合阀的相反的侵蚀性。 铁基烧结合金材料含有第一硬质粒子的10〜20％的面积和分散在基体相的第二硬质粒子的面积的15〜35％，第一和第二硬质粒子占25％〜 共计55％。 第一硬质颗粒由钴基金属间化合物组成，其尺寸为10至150μm，硬度至少为500HV0.1且小于800HV0.1。 第二硬颗粒由钴基金属间化合物组成，其尺寸为10至150μm，硬度至少为800HV0.1且小于1100HV0.1。 固体润滑剂颗粒也可以分散在基础基质相中。