Abstract:
A slide bearing which is preferably used in combination with a low-rigid aluminum alloy housing. The slide bearing has a high coefficient of thermal expansion so that it can satisfactorily follow up deformation of the housing, and the bearing also has an excellent heat radiation property. In the slide bearing, an overly bearing layer having a thickness of 3 to 50 .mu.m is provided on a copper alloy layer having a coefficient of thermal expansion of 15.times.10.sup.-6 /.degree.C. or more, a coefficient of thermal conductivity of 0.40 cal/cm sec .degree.C. or more and 0.2% proof stress of 295N/mm.sup.2 or more. As occasion demands, the slide bearing may be (1) provided with an intermediate layer between the copper alloy layer and the overlay bearing layer, or (2) flash-plated on an entirety surface of the bearing.
Abstract translation:滑动轴承,优选与低刚性铝合金外壳结合使用。 滑动轴承具有高的热膨胀系数,使得其可以令人满意地跟随壳体的变形,并且轴承也具有优异的散热性能。 在滑动轴承中,在热膨胀系数为15×10 -6 /℃以上的铜合金层上设置厚度为3〜50μm的过承载层,导热系数为0.40cal / cm 2℃以上0.2%的弹性极限应力为295N / mm 2以上。 根据需要,滑动轴承可以是(1)在铜合金层和覆盖轴承层之间设置有中间层,或者(2)在轴承的整个表面上闪镀。
Abstract:
A multi-layer bearing having an Al--Sn bearing alloy layer which has high fatigue strength and good conformability with a mating member further comprising a backing steel plate and an intermediate bonding layer of another aluminum alloy. The Al--Sn alloy consists essentially of, by weight, 7 to 20% Sn and balance of Al and impurities, and has a hardness of Hv 50 to 80. The aluminum alloy of the intermediate bonding layer consists essentially of, by weight, at least one of up to 1.7% Mn, up to 1.2% Cu and up to 1.8% Mg, and balance of Al and impurities, and a hardness rate of the aluminum alloy of the intermediate bonding layer to the Al--Sn bearing alloy exceeds Hv 70% and is not greater than 90%.
Abstract:
Wear resistance, seizure resistance, durability and corrosion resistance of an Oldham ring made of an aluminum alloy engaging with a swivel scroll made of an aluminum alloy are improved. The Oldham ring comprises a substrate made of an Al--Si alloy which has a light weight and a high strength, a bond layer of a multiplex zinc base alloy containing Cu and Ni as a primary plating layer which is formed on the substrate, and an electroless Ni--P plating layer having a hardness of MHV550 which is formed on the outermost surface of the Oldham ring.
Abstract:
A secondary coil for a linear motor, which is a composite metal plate comprising a backing metal layer 1, an intermediate bond metal layer 2 and a surface metal layer 3 which are integrally connected, the intermediate bond metal layer being formed of aluminum or aluminum alloy, the surface metal layer being formed of copper or copper alloy having a thickness of 2 to 8 mm. A copper plate or a copper alloy plate for the surface layer and an aluminum plate or an aluminum alloy plate for the intermediate layer are placed on each other and connected by rolling. The surface-layer metal plate with the bond layer is placed on a metal plate for the backing metal layer, with the bond layer being contacted with the metal plate for the backing metal layer, and two plates are connected by rolling.
Abstract:
The present invention provides a multilayer composite sliding material with excellent seizure resistance property having a steel plate or a steel plate having surfaces plated with copper or the like; a bond layer having a thickness of 0.05 to 0.5 mm, formed on the steel plate, and made of a sintered powder material consisting of 5 to 16% Sn, 0 to 15% Pb, 0 to 0.5% P and balance essentially Cu; and an alloy layer having a thickness of 0.1 to 1.0 mm, formed on the bond layer, and made of a sintered powder material consisting of 5 to 16% Sn, 1 to 12% MoS.sub.2 and balance essentially Cu. In a modified form of the alloy layer, not more than 20% Pb, not more than 1% P or not more than 12% Ni may be added. MoS.sub.2 powder may be coated with Cu or Ni.
Abstract:
A bushing having an outer sliding surface is produced by a die forming method without machining. A crowning shape is provided to the outer surface so that the outer diameter of the bushing is smaller at its opposite longitudinal ends, and increases progressively toward a central zone of the bushing. A cylindrical bushing blank is fitted on distal end portion of a vertically-movable mandrel. Next, one of an upper die and a lower die is reactively moved toward the other to plastically work the bushing blank by the both dies and the mandrel, thereby working the bushing. An inner diameter of the upper die is larger at its lower end, and decreases progressively away from the lower end, and an inner diameter of the lower die is larger at its upper end, and decreases progressively away from the upper end.
Abstract:
A copper base alloy suitable for use as a material of a sliding member, superior in seizure resistance, wear resistance and corrosion resistance. The alloy comprises 1.0 to 3.5 wt % Mn, 0.3 to 1.5 wt % Si, 11.5 to 25 wt % Zn, 5 to 18 wt % Pb and the balance substantially Cu and incidental impurities, the lead being uniformly distributed through the structure of the alloy. The alloy has a microstructure of which matrix is composed of .alpha.-phase alone. The alloy can further contain at least one selected from the group consisting of 0.02 to 1.5 wt % Mg and 0.1 to 1.5 wt % Te and/or at least one selected from the group consisting of 0.5 to 3.0 wt % Ni and 0.3 to 3.0 wt % Al.
Abstract:
There is disclose a method of and apparatus for surface-treatment of half sliding bearings having a multi-layer construction including a steel backing, a bearing alloy layer of copper alloy or aluminum alloy, an intermediate plating layer and a surface layer. A plurality of half sliding bearings are attached to a support member in such a manner that the half sliding bearings are arranged end-to-end into a semi-cylindrical configuration. The support member is transferred to be sequentially inserted into a plurality of openable and closable plating cases mounted respectively within pretreatment tanks and plating tanks, thereby sequentially forming the intermediate plating layer and the surface layer on the half sliding bearings.
Abstract:
Disclosed is a composite plating film for sliding members, essentially containing at least one of the alloy elements selected from tin, indium, antimony, and copper; inorganic particles; and lead; the composition of the composite plating film being:a) at least one of the alloy elements selected from tin, indium, antimony, and copper . . . 2 to 30 weight % in total;b) inorganic particles . . . 0.3 to 25 volume %; andc) lead . . . the balance.
Abstract:
A sliding material comprising a backing metal having a porous metal layer formed on the surface thereof and a composition for impregnation coating impregnated and coated to the pores and the surface thereof, wherein the composition for impregnation coating is a composition composed of (a) 0.5-30 vol. % of at least one material selected from a group of resins composed of PFA, EPE, and FEP, 5-30 vol % of metal lead having a relative surface area of 1,000-8,500 cm.sup.2 /g in an average particle size, and the balance composed of PTFE, a total of the respective components other than the PTFE is 5.5-50 vol %, a sliding material comprising a backing metal having porous metal layer formed on the surface thereof and a composition for impregnation coating impregnated and coated to the pores and the surface thereof composed of 0.5-30 vol % of at least one material selected from resins composed of PFA, EPE, and FEP, 5-30 vol % of metal lead having a relative surface area of 1,000-8,500 cm.sup.2 /g in an average particle size, 0.5-30 vol % of at least one material selected from a filler composed of solid lubricant metal oxide, metal fluoride, graphite, a fiber selected from a ceramic of carbon fiber, glass fiber, and SiC, and the balance composed of PTFE, the respective components other than the PTFE being 6-50 vol %, and a method of manufacturing a sliding material comprising the steps of impregnating and covering the above composition for impregnation coating (a) or (b) to the pores and the surface thereof defined in the porous metal layer formed on the surface of a backing metal, and thereafter baking the backing metal with the above composition for impregnation coating (a) or (b) in a neutral atmosphere or in a reducing atmosphere.