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    • 11. 发明专利
    • Iron compound sintered alloy for valve seat
    • 用于阀座的铁化合物烧结合金
    • JPS6164859A
    • 1986-04-03
    • JP18411884
    • 1984-09-03
    • Nippon Funmatsu Gokin KkToyota Motor Corp
    • KADOTA YUKIOMANABE AKIRASUGANUMA TETSUYAOMURA NAOMIMORIMOTO TOSHIO
    • F01L3/02C22C33/02C22C38/00C22C38/38
    • PURPOSE: To develop an Fe sintered alloy for valve seat which is excellent in heat resisting property, corrosion resistance and wear resistance by mixing carbon powder, Co powder and Fe-Mo powder of specified quantities and a specified hard metallic carbide, in powder of an Fe alloy containing one kind or more of Cr, Mo, V and Mn, and sintering them.
      CONSTITUTION: In powder of an Fe base alloy containing 1W20wt% one kind or two kinds or more of Cr, Mo, V and Mn, 0.3W2.0wt% carbon powder, 3W15wt% Co powder, 3W15wt% Fe-Mo whose Mo content is 60W70%, and 0.3W5wt% of a hard carbide of a metal of Cr, Mo, W, V, Nb, Ti, Ta, etc. are mixed. This mixed powder is sintered at 1,150°C in a ammonia cracked gas. Or as necessary, 1W20wt% Pb is infiltrated into a sintered body, and it is used as material for a valve seat.
      COPYRIGHT: (C)1986,JPO&Japio
    • 目的:开发一种用于阀座的Fe烧结合金,通过将特定量的碳粉,Co粉末和Fe-Mo粉末和特定的硬质金属碳化物混合在一起,具有优异的耐热性,耐腐蚀性和耐磨性, 含有一种或多种Cr,Mo,V和Mn的Fe合金,并烧结它们。 构成:在含有1〜20重量%的Cr,Mo,V和Mn的一种或两种以上的Fe基合金的粉末中,含有0.3〜2.0重量%的碳粉,3〜15重量%的Co粉,3〜15重量%的Fe Mo的含量为60-70%,Cr,Mo,W,V,Nb,Ti,Ta等金属的硬质合金的0.3-5重量%混合。 该混合粉末在氨裂解气体中在1150℃下烧结。 或者根据需要,将1-20重量%的Pb渗透到烧结体中,并且用作阀座的材料。
    • 12. 发明专利
    • Iron compound sintered alloy for valve seat
    • 用于阀座的铁化合物烧结合金
    • JPS6164857A
    • 1986-04-03
    • JP18409784
    • 1984-09-03
    • Nippon Funmatsu Gokin KkToyota Motor Corp
    • KADOTA YUKIOMANABE AKIRASUGANUMA TETSUYAOMURA NAOKIMORIMOTO TOSHIO
    • C22C33/02C22C38/00C22C38/38C22C38/60
    • PURPOSE: To develop an Fe compound sintered alloy for valve seat which is excellent in high temperature wear resistance by mixing such powder as C, Co, Fe-Mo, and a Co base alloy of a specified composition, in powder of an Fe alloy containing at least one kind of Cr, Mo, V and Mn, and sintering them.
      CONSTITUTION: In powder of an iron alloy containing 1W20wt% at least one kind of Cr, Mo, V and Mn, 0.3W2wt% carbon powder, 3W15wt% Co owder, 3W15wt% powder of Fe-Mo whose Mo content is 60W70%, 1W20wt% powder of a Co alloy containing 20W60wt% at least one kind of Mo, Cr and Si are mixed, formed, and sintered in an ammonia gas of 1,150°C. 1W20wt% Pb is infiltrated into a sintered body as necessary. Fine and hard particles of Fe-Mo and a Co alloy are dispersed uniformly, and an Fe sintered alloy for valve seat which is excellent in high-temperature wear resistance is obtained.
      COPYRIGHT: (C)1986,JPO&Japio
    • 目的:开发一种通过将含有规定组成的C,Co,Fe-Mo和Co基合金等粉末混合在一起的含Fe合金粉末中开发耐高温耐磨性优异的阀座Fe复合烧结合金, 至少有一种Cr,Mo,V和Mn,并烧结它们。 构成:在含有1-20重量%Cr,Mo,V和Mn,0.3〜2重量%碳粉,3〜15重量%钴,3〜15重量%Fe-Mo粉末的铁合金粉末中, Mo含量为60-70%,含有20-60重量%的Co合金的1-20重量%的粉末,至少一种Mo,Cr和Si混合,形成并在1,150℃的氨气中烧结。 1-20wt%的Pb根据需要渗入烧结体。 均匀地分散Fe-Mo和Co合金的细颗粒和硬质粒子,得到高耐磨性优异的阀座用Fe烧结合金。
    • 17. 发明专利
    • WEAR RESISTANT IRON-BASE SINTERED ALLOY AND ITS PRODUCTION
    • JPH06220591A
    • 1994-08-09
    • JP25870993
    • 1993-10-15
    • TOYOTA MOTOR CORP
    • TAKAHASHI YOSHITAKAMANABE AKIRAKANEKO TADATAKAOKAJIMA HIROSHI
    • C22C33/02C22C38/00
    • PURPOSE:To produce an iron-base sintered alloy for valve seat excellent in wear resistance. CONSTITUTION:A powder mixture is prepared by mixing, by weight ratio, 2-30% of Ni-base alloy powder having a composition consisting of 5-20% Mo, 20-40% Cr, 10-20% W, and the balance Ni with inevitable impurities and 0.2-2% of graphite powder with an iron-base alloy powder having a composition consisting of, by weight ratio, 2-15% Co, 2-10%, preferably >3%-10%, Mo, and the balance Fe with inevitable impurities, which is compacted. Further, 0.2-2% of solid lubricant is mixed with the above, if necessary, and they are compacted. The resulting green compact is sintered at a temp. between 1323K and the melting point of the Ni-base alloy powder. Because alloy powders are used and matrix structure is sintered, the degree of homogenization of entering into solid solution of alloying elements in a matrix is increased and superior corrosion resistance, oxidation resistance, and wear resistance can be obtained with minimal alloy quantity, and further, wear resistance can be improved because Mo, Cr, and W in the Ni-base alloy powder combine with C to form carbides. Moreover, machinability can be improved by adding free cutting agent.