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公开(公告)号：US5217683A
公开(公告)日：1993-06-08
申请号：US780722
申请日：1991-10-21
申请人： Robert J. Causton
发明人： Robert J. Causton
IPC分类号： C22C33/02
CPC分类号： C22C33/0264 , C22C33/0207 , B22F2998/00 , B22F2998/10
摘要： A steel powder composition useful in the production, by powder-metallurgical methods, of sintered parts with high density, good dimensional accuracy, hardenability, and strength is prepared from an admixture of two pre-alloyed iron powders of different compositions, the first being a pre-alloy of iron and molybdenum, and the second being a pre-alloy of iron with carbon and at least one transition element including chromium, manganese, vanadium, or columbium.
摘要翻译： 通过粉末冶金方法生产具有高密度，高尺寸精度，淬透性和强度的烧结部件的钢粉组合物由两种不同组成的预合金铁粉的混合物制备，首先是 铁和钼的预合金，第二种是铁与碳和至少一种过渡元素（包括铬，锰，钒或铌）的预合金。
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公开(公告)号：US5188659A
公开(公告)日：1993-02-23
申请号：US567766
申请日：1990-08-15
申请人： Charles G. Purnell
发明人： Charles G. Purnell
IPC分类号： F01L3/02 , B22F3/00 , B22F3/24 , B22F3/26 , C22C33/02 , C22C38/00 , C22C38/24 , C22C38/46 , C22C38/60
CPC分类号： C22C33/0264 , C22C33/0207 , B22F2998/00
摘要： Sintered materials and a method are described for the production of ferrous articles, particularly valve seat inserts. The materials are based on A1S1 H11, H12 and H13 materials plus diluent material.
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公开(公告)号：US5141554A
公开(公告)日：1992-08-25
申请号：US716742
申请日：1991-06-14
申请人： Yoshio Kijima
发明人： Yoshio Kijima
CPC分类号： C22C33/0264 , B22F3/225 , C22C38/04 , C22C38/18 , B22F2998/00
摘要： An alloy steel for use in injection-molded sinterings produced by powder metallurgy which comprises by weight, from 0.5 to 3% of Cr and/or Mn, from 0.3 to 1% of C, and balance Fe, is claimed.The alloy steel according to the present invention provides injection-molded sinterings having favorable post workability well-comparable to that of Fe-Ni-C alloys, and further improved in abrasion resistance when hardened and tempered to give a high Vickers hardness of over Hv 700.
摘要翻译： 一种用于通过粉末冶金制造的注射成型烧结体的合金钢，其要求包含重量比为0.5〜3％的Cr和/或Mn，0.3〜1％的C，余量为Fe。 根据本发明的合金钢提供具有良好可加工性的注塑成型的烧结体，与Fe-Ni-C合金相当，并且在硬化和回火时进一步提高了耐磨性，从而得到高于700v的维氏硬度 。
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公开(公告)号：US4985309A
公开(公告)日：1991-01-15
申请号：US226478
申请日：1988-08-01
申请人： Kuniaki Ogura , Junichi Oota , Teruyoshi Abe , Shigeaki Takajo
发明人： Kuniaki Ogura , Junichi Oota , Teruyoshi Abe , Shigeaki Takajo
CPC分类号： C22C33/0264 , B22F1/025 , C22C33/0207 , Y10T428/12181
摘要： An alloyed steel powder for metallurgy is provided with a water-atomized alloyed steel powder wherein an alloy component, an oxide of which is difficult to be reduced with hydrogen in the production of the powder, has been prealloyed in a composition range not exerting a bad influence upon compressibility of the steel powder, and an alloy component or components easier to be reduced with hydrogen than the above alloy component, the said easily reducible alloy component or components being partially diffused and adhered in a powdered form to the particle surfaces of the water-atomized alloyed steel powder.The composite powder of the invention has a coating layer of at least one element selected from nickel, copper, molybdenum and tungsten which is partially diffused and adhered in a powder form to the surface of a chromium containing prealloyed steel powder.
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公开(公告)号：US4985073A
公开(公告)日：1991-01-15
申请号：US384432
申请日：1989-07-25
申请人： Rolf Naumann , Jakob Rademachers , Fritz Rodi
发明人： Rolf Naumann , Jakob Rademachers , Fritz Rodi
CPC分类号： C22C33/0264 , B22F1/004 , G11B5/70621 , G11B5/712
摘要： Needle shaped alloy pigment powders consisting essentially of iron, silicon and aluminum, with up to 1.0% by weight of chromium and one or both of cobalt or tin in amounts from 0.3 to 3% by weight of cobalt and from 0.1 to 5.0% by weight of tin, based in each case on the iron, are useful as the magnetic powders used in magnetic recording devices.
摘要翻译： 基本上由铁，硅和铝组成的针状合金颜料粉末，含有至多1.0重量％的铬和钴或锡中的一种或两种，其量为0.3-3重量％的钴和0.1-5.0重量％ 在铁的每种情况下，锡可用作磁记录装置中使用的磁粉。
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公开(公告)号：US4678510A
公开(公告)日：1987-07-07
申请号：US913488
申请日：1986-09-30
CPC分类号： C22C33/0264 , B22F3/1003 , C22C33/0292
摘要： A wear resistant iron alloy article is preferably formed by compacting and sintering a predominantly iron powder mixture containing additions of carbon, copper and nickel boride. The product microstructure comprises hard borocementite particles dispersed in a martensite or pearlite matrix. The particles have a cross-sectional dimension greater than 1 micron and are present in an amount preferably between 10 and 30 volume percent to improve wear resistance.
摘要翻译： 耐磨铁合金制品优选通过压实和烧结主要含有碳，铜和镍硼化物的铁粉混合物来形成。 产品微观结构包括分散在马氏体或珠光体基体中的硬硼矿石颗粒。 颗粒具有大于1微米的横截面尺寸，并且以优选10至30体积％的量存在，以改善耐磨性。
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公开(公告)号：US4382818A
公开(公告)日：1983-05-10
申请号：US938675
申请日：1978-08-31
申请人： Stanislaw Mocarski
发明人： Stanislaw Mocarski
CPC分类号： C22C33/0264 , C22C33/0207
摘要： A process for improving alloying efficiency in making powder alloy sintered compacts is disclosed. A master alloy (non-iron-based) powder is formulated for admixture in small amounts (2.5-6.0%) to a relatively pure iron based powder and free carbon powder to provide liquid phase sintering and production of a substantially homogeneous product having the characteristics of a wrought alloy product. The master alloy powder is inert gas atomized and chemically constituted to contain at least two elements selected from the group consisting of and in the percentage ranges for the alloy powder of manganese (40-72%), nickel (12-30%), molybdenum (5-11%), chromium (3-20%), copper and iron (1-40%. The master alloy powder may contain additions of a wetting agent, silicon up to 3% and rare earth metals up to 2%, either of which assist to speed up diffusion and create a more favorable liquidus-solidus relationship within the master alloy powder. The iron-based powder is water atomized and annealed to contain less than 1% impurities. The admixture is compacted and heated in a protective atmosphere to a temperature in the range of 1900-2250 to facilitate liquidification only of the master alloy powder for diffusion into the base iron powder and thus provide sintering.
摘要翻译： 公开了一种提高粉末合金烧结体的合金化效率的方法。 配制母合金（非铁基）粉末，以少量（2.5-6.0％）与相对纯的铁基粉末和游离碳粉末混合以提供液相烧结和生产具有特征的基本均匀的产品 的锻造合金产品。 主合金粉末是惰性气体雾化和化学构成的，以含有选自锰（40-72％），镍（12-30％），钼的合金粉末的百分比范围内的至少两种元素 （5-11％），铬（3-20％），铜和铁（1-40％），母合金粉末可能含有润湿剂，高达3％的硅和高达2％的稀土金属， 这些都有助于加速扩散，并在母合金粉末中产生更有利的液相线 - 固相线，铁基粉末被水雾化并退火，含有少于1％的杂质，混合物被压实并加热保护 气氛温度在1900-2250℃范围内，以便于仅将母合金粉末进行液化，以扩散到基底铁粉中，从而提供烧结。
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公开(公告)号：USRE30855E
公开(公告)日：1982-01-26
申请号：US236481
申请日：1981-02-20
申请人： Yew-Tsung Chen
发明人： Yew-Tsung Chen
IPC分类号： C22C33/02
CPC分类号： C22C33/0264
摘要： A powder metal composition containing 1.0-2.5% Ni, 0.3-0.7% Mo, 0.15-0.30% Mn, 0.5-1.5% Cu, 0.3-0.7% C, 0.50-1.0% zinc stearate, the balance being Fe.
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公开(公告)号：US4253874A
公开(公告)日：1981-03-03
申请号：US942276
申请日：1978-09-14
申请人： Robin T. Cundill
发明人： Robin T. Cundill
CPC分类号： C22C33/0264 , B22F3/1007 , C22C38/18
摘要： A finely divided annealed steel powder consisting by weight of up to 1.5% carbon, 1.0 to 2.0% chromium, less than 0.05% silicon, less than 0.1% manganese and either one or a combination of two or more of the following elements: 0.2 to 1.0% molybdenum, 0.2 to 1.0% nickel, up to 0.3% phosphorous and up to 1.0% coper, the balance, apart from impurities, being iron.
摘要翻译： 一种细分的退火钢粉末，其重量为至多1.5％的碳，1.0至2.0％的铬，小于0.05％的硅，小于0.1％的锰，以及两种或更多种以下元素中的一种或两种或更多种的组合：0.2至 1.0％的钼，0.2至1.0％的镍，至多0.3％的磷和至多1.0％的铜，余量除了杂质外，是铁。
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公开(公告)号：US4251273A
公开(公告)日：1981-02-17
申请号：US17021
申请日：1979-03-02
申请人： David T. Smith , Harold R. Biehl
发明人： David T. Smith , Harold R. Biehl
CPC分类号： C22C33/0264 , B22F3/20 , F01L1/14
摘要： This invention relates to a method of making a valve lifter or the like wherein elemental iron powder is blended with smaller sized powders of manganese, molybdenum, and nickel, or sources of these metals, the resulting mixture is pressed into a coherent preform which is then sintered to cause solid state diffusion and alloying to occur within the preform. The sintered preform is then pressed into a shape which approaches the theoretical density of the metal and has a nearly uniform density carburized and heat treated, the pressing being carried out at ambient temperatures to produce a valve lifter or similar article having superior wearing properties at a lower cost, when compared with present materials and methods of manufacture.
摘要翻译： 本发明涉及一种制造气门挺杆等的方法，其中元素铁粉与较小尺寸的锰，钼和镍粉末或这些金属的来源混合，将所得混合物压制成相连的预制件 烧结以引起固态扩散和合金化发生在预制件内。 然后将烧结的预成型件压制成接近金属的理论密度的形状，并且具有几乎均匀的渗碳和热处理的密度，所述压制在环境温度下进行以产生具有优异的耐磨性的气门挺杆或类似物品 与现有材料和制造方法相比，成本较低。
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