公开(公告)号：US4485147A

公开(公告)日：1984-11-27

申请号：US528523

申请日：1983-09-01

申请人： Yoshio Nishino ,  Seiichi Kirigaya

发明人： Yoshio Nishino ,  Seiichi Kirigaya

IPC分类号： C22C38/00 ,  C22C33/02 ,  F01L3/04 ,  F02B1/04 ,  B22F3/10 ,  B32B5/18

CPC分类号： F01L3/04 ,  C22C33/0207 ,  C22C33/0242 ,  F02B1/04 ,  Y10T428/12042 ,  Y10T428/1216

摘要： A process for producing a Cu-infiltrated sintered Fe-base material without requiring a separate Cu infiltration step is disclosed. The process comprises the steps of preparing two powder mixes, one having a predetermined composition with a powder of infiltrating material containing Cu powder or Cu alloy powder as the primary component, and the other having a predetermined composition without said powder of infiltrating material; pressing the two powder mixes into a compact having said powder of infiltrating material present locally; and sintering the compact under ordinary conditions so as to cause the infiltrant to penetrate into the infiltrant-free area simultaneously with the sintering.Also disclosed is a two-layer valve seat produced by this process. One layer of the valve seat accounts for the principal part of the seat and is made of an Fe-base sintered material containing Cu or Cu alloy as an infiltrant, and the other layer provides a layer to contact the valve and is infiltrated with Cu through pores during the sintering.

摘要翻译： 公开了一种不需要单独的Cu渗透步骤来生产Cu-渗透的烧结Fe基材料的方法。 该方法包括以下步骤：制备两种粉末混合物，一种具有预定组成的粉末混合物，其中含有Cu粉末或Cu合金粉末作为主要组分的渗透材料粉末，另一种具有预定组成，而没有所述渗透材料粉末; 将两种粉末混合物压制成具有局部存在的所述渗透材料粉末的压块; 并在常规条件下烧结该压块，以使该浸渗剂与烧结同时渗透到无渗透区域。 还公开了通过该方法制造的两层阀座。 阀座的一层是座椅的主要部分，由含有Cu或Cu合金作为渗透剂的Fe基烧结材料制成，另一层提供了一个接触阀门的层，并渗入Cu 烧结过程中的孔隙。

公开(公告)号：US3950166A

公开(公告)日：1976-04-13

申请号：US437902

申请日：1974-01-30

申请人： Kunio Obara ,  Yoshio Nishino ,  Shoji Matsumoto

发明人： Kunio Obara ,  Yoshio Nishino ,  Shoji Matsumoto

IPC分类号： B22F1/00 ,  B22F3/10 ,  B22F9/04 ,  C22C1/04 ,  C22C14/00 ,  B22F3/16

CPC分类号： C22C1/0458 ,  B22F2998/00

摘要： A sintered article of a titanium alloy is produced by powder metallurgy techniques, the alloy having uniform structure, and improved mechanical properties, machinability and weldability. The process comprises; partially sintering a powder mixture of (a) at least one selected from the group consisting of powdered titanium and titanium hydride having a particle size of minus 60 mesh and (b) at least one powdered additive selected from the group consisting of powdered Ni, Al, Cu, Sn, Pd, Co, Fe, Cr, Mn, and Si having a particle size of minus 60 mesh, to partially alloy the titanium with one or more additives employed; after furnace cooling the partially sintered mass to room temperature, pulverizing it to powder of minus 60 mesh in particle size to prepare mother alloy powder; mixing (a) the mother alloy powder having a particle size of minus 60 mesh, (b) at least one selected from the group consisting of powdered titanium and titanium hydride having a particle size of minus 60 mesh, and (c), if necessary, at least one additional element selected from the group consisting of powdered V, Mo, Zr and Al-V alloy, which are added for the purpose of avoiding excess formation of a liquid phase during the subsequent sintering; compacting the thus formed powder mixture into a compact having a predetermined shape; and sintering the compact at a temperature ranging from 1000.degree.C to 1500.degree.C in a non-oxidizing and non-nitriding atmosphere for from 30 minutes to 2 hours.