摘要:
A cylinder head gasket (1) includes two pieces of gasket base plates (3) providing a combustion chamber hole (3A), and a spacer (4) arranged surrounding a cylinder bore (2) in an endless manner and is held between the gasket base plates. Each gasket base plate has a full-bead portion (3a) and a half-bead portion (3b) within a range thereof that superposes on the spacer (4). The spacer, the full-bead portion and the half-bead portion are held continuously along the circumferential direction of the cylinder bore between the cylinder head (5) and the cylinder block (6). Due to the spacer, the full-bead portion and the half-bead portion are press-contacted to the opposing member with a high surface pressure and over a relatively wide contact area. Therefore, a favorable sealing performance is obtained despite the presence of a cavity or a scar in the junction surface of the opposing side.
摘要:
The present invention relates to an end bearing for a one-way clutch well suited for use in an automatic transmission. An end bearing according to the present invention comprises a main body portion comprising in turn a steel plate, a hard coating portion applied to the surface of the main body portion and a soft coating portion applied to the surface of the hard coating portion. Since its main body portion comprises the steel plate, the end bearing of the present invention can maintain sufficient rigidity. In addition, since a portion constituting a sliding surface is covered with the soft and hard coating portions, it is possible to provide an end bearing which is superior in anti-seizing properties and durability.
摘要:
The objective is to increase the wear-resistance with respect to uneven wear which is required when a PTFE series sliding material formed by impregnating the porous sinter layer of a back metal surface with PTFE and then firing the same, and in which a fibrous PTFE and additionally in some cases a solid lubricant or a wear-resistant additive or both are impregnated, is used as a bearing for an air conditioner. An oligomer or a polymer carbide (2) is mixed into the tangled structure of a fibrous PTFE (1).
摘要:
A cylinder head gasket (1) is provided with a shim ring (5), which surrounds a combustion chamber hole (2A) of a gasket body (2). The shim ring is spot welded circumferentially along weld lines (5a, 5b) such that pitches of the spot welding are varied to form high weld density regions (H, H, H) and low weld density regions in a circumferential direction of the shim ring. Pitch of spot welding in the high weld density regions is one which would generate strain in the shim ring due to heat at the time of welding in the case where the entire circumference of the shim ring were spot welded at such pitch. Inclusion of the low weld density regions can prevent strain in the shim ring to enhance a welding strength.
摘要:
A surface of a lining material (3) is formed with a multiplicity of irregular surfaces (3a), and is wholly covered by an intermediate layer (4) composed of Ni, of which surface in turn is covered by an overlay layer (5) composed of a Sn alloy. Being formed with the irregular surfaces (3a), the surface of the lining material (3) is set to have a roughness t1 of 2 mu mRz to 8 mu mRz, and the intermediate layer (4) is set to have a thickness t2 of 0.01 mu m to 0.6 mu m. When a slide bearing (1) is heated, the overlay layer (5) and the intermediate layer (4) combine with each other to produce a Sn-Ni compound (6). When the overlay layer (5) has worn, the Sn-Ni compound (6) is exposed to a sliding surface but the above setting can prevent the Sn-Ni compound (6) from being exposed to the entire sliding surface, so that it is possible to improve a seizure resistant property of the slide bearing (1).
摘要:
A sliding bearing formed by providing annular grooves (2a) in an inner circumferential surface of a bearing alloy layer (2), and covering the bearing alloy layer (2) with an intermediate layer (3) and an overlaying layer (4) in the mentioned order, wherein, when the bearing is worn, the overlaying layer (4) and intermediate layer (3) which remain in the annular grooves (2a), and ridges (2b) between the annular grooves (2a) in the bearing alloy layer (2) are exposed. Let h equal the height of the ridges (2b), t the thickness of the intermediate layer (3), t a longitudinal axis and h a lateral axis in the present invention. The thickness t and height h are set in the ranges in which they satisfy the conditions of the following three expressions: 1 h and t is mu m. This enables an initial abrasion resistance, and the post-abrasion seizure resistance and compatibility of the overlaying layer to be improved.
摘要翻译:一种滑动轴承,其通过在轴承合金层(2)的内周面上设置环状槽(2a)而形成,并且在所述轴承合金层(2)的中间层(3)和覆盖层(4)上覆盖所述轴承合金层 其中,当轴承磨损时,保留在环形槽(2a)中的覆盖层(4)和中间层(3)以及轴承合金层中的环形槽(2a)之间的脊(2b) (2)暴露。 令h(h)等于脊(2b)的高度,中间层(3)的厚度,纵轴的厚度和< 在本发明中的横轴。 厚度t和高度h h设定在满足以下三个表达式的条件的范围内:1 = h <5,t = 2h / 3 + 1/3,t = 3。 更优选地,它们被设置在它们满足以下两个表达式的条件的范围内:1 = h <5,t = h / 2。 小时和小时的单位是m m。 这使得能够改善初始的耐磨性,并且可以改善耐磨后耐咬合性和覆盖层的相容性。
摘要:
In order to increase the anti-seizing properties of a swash plate which is a sliding component of a swash plate type compressor, a copper alloy is sprayed onto the swash plate and the following texture/composition controls are performed as required: (a) to produce a mixed texture of a dissolved texture into which atomized bronze powder is dissolved during spraying and an atomized texture into which the same bronze powder is not dissolved, (b) to add no or a small amount of Pb to the dissolved texture, (c) to add Sn, P, Al, Ag, Si, Mn, Cr, Ni, Zn, Pb and/or Bi to copper, (d) to add a hard material to a copper alloy, and (e) to form an intermediate layer comprising an Ni alloy or the like between the sprayed layer and a substrate.
摘要:
A method of pressure-welding a composite material includes passing a pair of strips (1, 2, 11, 12) through a gap (g) between a pair of pressure-welding rolls (5, 6, or 15, 16). One or both of a composite material (7, 17) pressure-welded by passing through the gap and one of the strips introduced into the gap are wound around one of the pressure-welding rolls. Under this state, the pair of pressure-welding rolls are made to have different peripheral speeds from each other, thereby controlling the draft of each strip.
摘要:
A sliding component consisting of a Pb-free Cu-Bi type sintered material, the surface of which to be brought into contact with a mating shaft is finished by machining so as to exhibit a prescribed roughness and in which many Bi phases are present on the finished surface, wherein the performance of Bi is exerted stably. The machining causes some of the Bi phases to be covered with the sintered material, and the total area fraction of exposed Bi phases accounts for at least 0.5% of the finished surface.
摘要:
A slide contacting surface (1A) of a sliding bearing (1) has ridges (1a) extending continuously and helically at a predetermined pitch p . The roughness h of the slide contacting surface (1A) including the ridges (1a) is set not more than a half of the height (H) of the ridges (1a). This enables a sliding bearing (1) of an excellent compatibility to be provided.