-
公开(公告)号：US06375708B1
公开(公告)日：2002-04-23
申请号：US09652175
申请日：2000-08-31
申请人： Leonid P. Dorfman , Michael J. Scheithauer , Muktesh Paliwal , David L. Houck , James R. Spencer
发明人： Leonid P. Dorfman , Michael J. Scheithauer , Muktesh Paliwal , David L. Houck , James R. Spencer
IPC分类号： C22C2704
CPC分类号： B22F1/025 , B22F1/0003 , B22F9/22 , B22F2998/00 , C01G41/00 , C04B41/5133 , C04B41/88 , C22C1/045 , H01H1/025 , H01H11/048 , H01L23/49883 , H01L2924/0002 , H05K1/092 , B22F3/1035 , H01L2924/00
摘要： A W—Cu—Ni alloy having thermophysical properties suitable for use in electrical contacts and electrodes is described. The alloy is formed by direct sintering of a powder blend comprising a tungsten-copper composite powder and a nickel powder. The tungsten-copper composite powder component of the blend comprises individual dual phase particles having a copper phase and a tungsten phase wherein the tungsten phase substantially encapsulates the copper phase. The method for direct sintering the W—Cu—Ni alloy substantially eliminates the formation of brittle intermetallics and slumping during sintering.
摘要翻译： 描述了具有适用于电触点和电极的热物性的W-Cu-Ni合金。 通过直接烧结包含钨 - 铜复合粉末和镍粉末的粉末混合物形成合金。 共混物的钨 - 铜复合粉末组分包括具有铜相和钨相的单独的双相颗粒，其中钨相基本上封装铜相。 直接烧结W-Cu-Ni合金的方法基本上消除了脆性金属间化合物的形成和烧结期间的塌陷。
-
公开(公告)号：US5145512A
公开(公告)日：1992-09-08
申请号：US293031
申请日：1989-01-03
摘要： A consolidated tungsten alloy body consisting essentially of from about 88% to about 98% by weight of tungsten, balance, nickel and iron, produced by liquid phase sintering, containing a continuous phase of a tungsten, nickel and iron alloy and a discontinuous phase of elongated grains of tungsten having an aspect ratio of at least 4:1 relatively uniformly distributed throughout the continuous phase and wherein said body has a recrystallization temperature of from about 1000.degree. C. to about 1200.degree. C. A process for producing the consolidated bodies comprises working and annealing at controlled temperatures to achieve the desired properties. The working temperatures are from about 700.degree. C. to about 900.degree. C. and the annealing temperature is preferably 1200.degree. C.
摘要翻译： 一种固体钨合金体，其主要由约88％至约98％重量的钨，余量，镍和铁，通过液相烧结制备，含有钨，镍和铁合金的连续相和不连续相 长宽比为至少4:1的钨的细长晶粒在整个连续相中相对均匀分布，并且其中所述体的重结晶温度为约1000℃至约1200℃。一种生产固结体的方法包括 在受控温度下进行加工和退火以达到所需的性能。 工作温度为约700℃至约900℃，退火温度优选为1200℃。
-
公开(公告)号：US4832907A
公开(公告)日：1989-05-23
申请号：US143866
申请日：1988-01-14
摘要： A process is disclosed for producing a sheet of tungsten heavy alloy which involves uniformly blending elemental powder components of the alloy by forming a slurry of the powder components in a liquid medium, removing the liquid medium from the powders and forming a planar cake of the powders, drying the cake, sintering the cake to a density equal to or greater than about 90% of the theoretical density of the alloy to form the sheet.
摘要翻译： 公开了一种用于生产钨重合金片的方法，该方法涉及通过在液体介质中形成粉末成分的浆液，均匀混合合金的元素粉末成分，从粉末中除去液体介质并形成粉末的平面饼 ，将滤饼干燥，将滤饼烧结至等于或大于合金理论密度的约90％的密度以形成片材。
-
4.发明授权公开(公告)号：US06385847B1
公开(公告)日：2002-05-14
申请号：US09661335
申请日：2000-09-13
申请人： Jay M. Larson , David F. Berlinger , James R. Spencer , Xin Nie
发明人： Jay M. Larson , David F. Berlinger , James R. Spencer , Xin Nie
IPC分类号： B23P1500
CPC分类号： F01L3/00 , F01L2103/00 , Y10T29/49298 , Y10T29/49304 , Y10T29/49309 , Y10T29/49314
摘要： An improved process 30 for making an engine poppet valve 10 provides an unfinished poppet valve 10 with an initial diameter (d1) of a valve head 22 and an initial thickness (t1) of an interface 56 between a seat facing groove 54 and a combustion face 18 of the valve 50 prior to seat facing the valve 50 to prevent burn-through during the welding process 38. Coining 40 the valve head 22 after seat facing 38 decreases the initial thickness (t1) of the interface 56 to a selected thickness (t2) and increases the initial diameter (d1) to a final or desired diameter (d2) of the valve head 22. The method of the present invention eliminates any need for removing excess material and allows for hot forming the seat facing material 58 to reduce machining steps.
摘要翻译： 用于制造发动机提升阀10的改进方法30为未完成的提升阀10提供阀头22的初始直径（d1）和在面向对面的槽54和燃烧面之间的界面56的初始厚度（t1） 阀座50面向阀门50以防止在焊接过程38期间的烧穿。打印头40在阀座38之后的阀头22将接口56的初始厚度（t1）降低到所选择的厚度（t2 ）并且将初始直径（d1）增加到阀头22的最终或期望直径（d2）。本发明的方法消除了除去多余材料并允许热成型座椅材料58以减少加工的任何需要 脚步。
-
5.发明授权Process for producing tungsten heavy alloy sheet using a metallic salt binder system 失效使用金属盐粘合剂体系生产钨重合金板的方法
公开(公告)号：US4777015A
公开(公告)日：1988-10-11
申请号：US143878
申请日：1988-01-14
摘要： A process is disclosed for producing a sheet of tungsten heavy alloy which involves uniformly blending metal powder compnents of the alloy by forming a slurry of the powder components and one or more chemical compounds of at least one of the components of the alloy as an inorganic binder in a liquid medium, the chemical compound being soluble in the liquid medium and capable of being decoposed into one or more of the metal components of the alloy below the melting point of the metal powder components, removing the liquid medium from the powder components and forming a planar cake of the powder components and said inorganic binder, drying the cake, heating the cake to a temperature sufficient to decompose the inroganic binders into their elemental components or oxides, followed by heating the cake in a reducing atmosphere at a temperature sufficient to reduce any oxides forming during the previous steps to the metals, and sintering the cake to a density equal to or greater than about 90% of the theoretical density of the alloy to form the sheet.
摘要翻译： 公开了一种用于生产钨重合金片的方法，其涉及通过形成粉末组分的浆料和合金的至少一种组分的一种或多种化学化合物作为无机粘合剂来均匀地掺合合金的金属粉末组分 在液体介质中，化合物在液体介质中是可溶解的并且能够被降解成低于金属粉末成分熔点的合金的一种或多种金属组分，从粉末组分中除去液体介质并形成 粉末组分和所述无机粘合剂的平面饼状物，干燥滤饼，将饼块加热到足以将无机粘合剂分解成其元素组分或氧化物的温度，然后在足够减少的温度的还原气氛中加热滤饼 在前述步骤中形成金属的任何氧化物，并将饼状物烧结至等于或大于约90的密度 合金的理论密度的百分比形成片材。
-
公开(公告)号：US4429201A
公开(公告)日：1984-01-31
申请号：US348659
申请日：1982-02-12
申请人： Leo P. Dekkers , James R. Spencer
发明人： Leo P. Dekkers , James R. Spencer
CPC分类号： H01H15/005 , H01H27/04
摘要： A switch including a housing in which a pair of electrical contacts are positioned for movement between open and closed positions. An actuator movably mounted in the housing moves between contacts open and contacts closed positions. The actuator includes a wiper wall movable between and across the contacts for opening same and wiping same upon movement of the actuator to its contacts open position. The entire switch is assembled without the use of mechanical fasteners or bonding of any kind.
摘要翻译： 一种开关，包括壳体，其中定位一对电触点用于在打开位置和闭合位置之间移动。 可移动地安装在壳体中的致动器在触点之间移动并且接触闭合位置。 致动器包括可在致动器移动到其触点打开位置的同时在触头之间移动并穿过触头的擦拭器壁，用于打开触头并在其上擦拭。 整个开关在不使用机械紧固件或任何类型的接合的情况下组装。
-
公开(公告)号：US5008071A
公开(公告)日：1991-04-16
申请号：US275820
申请日：1988-11-25
摘要： A consolidated tungsten alloy body consisting essentially of from about 70% to about 98% by weight of tungsten, balance nickel and iron in essentially an 8:2 weight ratio. A process for producing the consolidated bodies where the tungsten content is greater than about 88% by weight comprises forming a relative uniform blend of the described metal powders, compacting the powders to form a green body then liquid phase sintering the green body to full density. For alloys containing less than about 90% tungsten solid state sintering can be used.
摘要翻译： 一种固体钨合金体，主要由约70％至约98％重量的钨组成，余量为镍和铁，重量比基本上为8：2。 用于生产钨含量大于约88重量％的固结体的方法包括形成所述金属粉末的相对均匀的共混物，压实粉末以形成生坯，然后液相将生坯烧结至全密度。 对于含有少于约90％钨的合金，可以使用固态烧结。
-
公开(公告)号：US4986961A
公开(公告)日：1991-01-22
申请号：US415687
申请日：1989-10-02
摘要： A consolidated tungsten heavy alloy body consisting essentially of from about 88% to about 98% by weight of tungsten, from about 0.25% to about 1.5% by weight of a grain size reducing additive selected from the group consisting of ruthenium, rhenium and mixtures thereof, balance iron and nickel in a weight ratio of nickel to iron of from about 1:1 to about 9:1 wherein the consolidated body has greater than about 2500 grains per square millimeter as determined from the microstructure of the body. A process for producing the consolidated body comprises forming a relative uniform blend of the described metal powders, compacting the powders to form a green body then solid state sintering to remove binders followed by liquid phase sintering the green body to full density.
摘要翻译： 一种固体钨重合金体，其主要由约88％至约98％重量的钨，约0.25％至约1.5％重量的选自钌，铼及其混合物的粒度还原添加剂 平衡铁和镍的镍与铁的重量比为约1:1至约9:1，其中固化体根据身体的微结构确定具有大于约2500个晶粒/平方毫米。 用于生产固化体的方法包括形成所述金属粉末的相对均匀的共混物，压实粉末以形成生坯，然后固态烧结以除去粘合剂，然后将生坯体液相烧结至全密度。
-
公开(公告)号：US4885031A
公开(公告)日：1989-12-05
申请号：US140373
申请日：1988-01-04
摘要： A consolidated tungsten heavy alloy body consisting essentially of from about 88% to about 98% by weight of nickel, from about 0.25% to about 1.5% by weight of a grain size reducing additive selected from the group consisting of ruthenium, rhenium and mixtures thereof, balance iron and nickel in a weight ratio of nickel to iron of from about 1:1 to about 9:1 wherein the consolidated body has greater than about 2500 grains per square millimeter as determined from the microstructure of the body. A process for producing the consolidated body comprises forming a relative uniform blend of the described metal powders, compacting the powders to form a green body then solid state sintering to remove binders followed by liquid phase sintering the green body to full density.
-
公开(公告)号：US4749410A
公开(公告)日：1988-06-07
申请号：US17024
申请日：1987-02-17
摘要： An article of tungsten heavy alloy material is disclosed, the article having essentially elongated tungsten grains, the alloy material comprising tungsten, nickel, and iron, the elongated tungsten grains having a length to diameter ratio of at least about 2 to 1.A method is disclosed for producing the above article which involves rolling a pressed and sintered body of tungsten heavy alloy material comprising tungsten, iron, and nickel in a tandem rolling mill having a succession of roll stands, each stand consisting essentially of three rolls positioned at about 120.degree. to each other so that the gap between the rolls is a triangle, each stand being rotated about 180.degree. with respect to the adjacent roll stands, the rolling being done at a sufficient temperature to produce the article which has essentially elongated tungsten grains.
摘要翻译： 公开了一种钨重合金材料制品，该制品具有基本上细长的钨晶粒，该合金材料包括钨，镍和铁，细长的钨颗粒的长径比至少为约2:1。一种方法是 公开了用于生产上述制品的方法，该制品涉及在具有一系列辊架的串列式轧机中轧制包含钨，铁和镍的钨重质合金材料的压制和烧结体，每个支架基本上由位于约120° 使得辊之间的间隙为三角形，每个支架相对于相邻的辊架旋转约180度，在足够的温度下进行轧制以制造具有基本上细长的钨颗粒的制品。
-
-
-
-
-
-
-
-
-
搜索结果
16 条记录 (耗时 0.022 秒)
