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    • 3. 发明授权
    • Iron-based sintered sliding product
    • 铁基烧结滑动产品
    • US4344795A
    • 1982-08-17
    • US123088
    • 1980-02-20
    • Hiroyuki EndoYutaka Ikenoue
    • Hiroyuki EndoYutaka Ikenoue
    • B22F5/00C22C33/02C22C38/00F16C33/12B22F3/00
    • C22C33/0257C22C33/0207F16C33/121
    • An iron-based sintered sliding product having improved contact fitness and resistance to wear, in which 0.1 to 3 wt. % free graphite and Fe--P--C ternary alloy phase of hardness MHv 300 to 850 having over 3% to 20% of area are dispersed into an iron-based matrix containing either one selected from 0.1 to 1 wt. % Sn and 0.1 to 1 wt. % Zn, and 1 to 10 wt. % Cu and 0.3 to 1 wt. % C. As a modified embodiment of the present invention, an alloy containing Fe--Mo as a main component may be dispersed into the iron-based matrix in place of the aforesaid Fe--P--C ternary alloy phase. Said Fe--P--C ternary alloy phase may be prepared by mixing a single metal element, Fe, C and P into the powdered raw material of the iron-based matrix. Alternatively, said Fe--P--C ternary alloy phase may be prepared by mixing Fe--P--C alloy powder into the powdered raw material of the iron-based matrix. Further, an alloy containing Fe--Mo as a main component may be prepared by mixing Fe--Mo--Si alloy powder into the powdered raw material of the iron-based matrix.
    • 具有改进的接触适应性和耐磨性的铁基烧结滑动产品,其中0.1至3wt。 具有超过3%至20%面积的硬度MHv 300至850的%游离石墨和Fe-P-C三元合金相分散到含有选自0.1至1wt。 %Sn和0.1〜1wt。 %Zn,和1〜10wt。 %Cu和0.3〜1wt。 作为本发明的变形例,可以将含有Fe-Mo作为主要成分的合金分散在铁基基体中,代替上述Fe-P-C三元合金相。 所述Fe-P-C三元合金相可以通过将单一金属元素Fe,C和P混合到铁基基质的粉末原料中来制备。 或者,所述Fe-P-C三元合金相可以通过将Fe-P-C合金粉末混合到铁基基质的粉末状原料中来制备。 此外,含有Fe-Mo作为主要成分的合金可以通过将Fe-Mo-Si合金粉末混合到铁基基体的粉末状原料中来制备。
    • 7. 发明授权
    • Process for the preparation of sintered alloys for valve mechanism parts
for internal combustion engines
    • 制备用于内燃机阀门机构部件的烧结合金的方法
    • US4588441A
    • 1986-05-13
    • US575713
    • 1984-01-31
    • Yutaka IkenoueHiroyuki EndohTadao Hayasaka
    • Yutaka IkenoueHiroyuki EndohTadao Hayasaka
    • B22F1/00B22F3/10C22C33/02C22C38/00B22F3/16C22C38/12C22C38/16
    • C22C33/0278C22C33/0207
    • A process for the preparation of an iron base sintered alloy well suited for use in valve mechanism members or parts of internal combustion engines, which has a porosity of 5 to 15% and throughout the iron matrix of which is dispersed an Fe-Mo intermetallic compound in the form of a phase harder than the said matrix, by using a powder mixture obtained by incorporating into finely divided iron powders having a particle size of not more than 30 microns the given amounts of copper powders, phosphorus-containing alloy powders, carbon powders and Fe-Mo alloy powders, or the given amounts of bronze powders and/or a mixture of copper powders and tin powders, phosphorus-containing alloy powders, carbon powders and Fe-Mo alloy powders.wherein the said iron powders are granulated alone or in combination with other powders to an apparent particle size of 30 to 200 microns, and the obtained powder mixture is formed into a green compact having a density ratio of 75 to 85%, which is in turn sintered at a temperature of 1030.degree.-1130.degree. C. in a reducing atmosphere.
    • 一种制备铁基烧结合金的方法,该铁基烧结合金非常适用于内燃机的阀机构部件或部件,其孔隙率为5%至15%,整个铁基体分散有Fe-Mo金属间化合物 以比所述基质更硬的相的形式,通过使用通过掺入细粒度不超过30微米的细分铁粉所获得的粉末混合物,给定量的铜粉,含磷合金粉末,碳粉 和Fe-Mo合金粉末,或给定量的青铜粉末和/或铜粉末和锡粉末,含磷合金粉末,碳粉末和Fe-Mo合金粉末的混合物。 其中所述铁粉单独或与其它粉末组合制成表观粒径为30至200微米,所得粉末混合物形成密度比为75至85%的生坯,其依次为 在还原气氛中在1030〜-1130℃的温度下烧结。