摘要:
There are provided an annular concentric stranded bead cord which can realize a reduction in weight while ensuring its strength, a method for manufacturing the same and a vehicle tire.The manufacturing method is a method for manufacturing an annular concentric stranded bead cord by forming a sheath layer by winding spirally a lateral wire round an annular core. After the sheath layer has been formed, the lateral wire is annealed in a pressure-reduced inactive gaseous atmosphere with an annealing quantity which exceeds a heating quantity (temperature×time) which is necessary for vulcanization of a vehicle tire with the annular concentric stranded bead cord embedded in a rubber of the vehicle tire when building the same and is shaped so that “Diameter shaping ratio (%)=H/D×100” becomes 20% or larger and 105% or smaller.
摘要翻译:提供了一种环形同心绞合胎圈帘线,其可以在确保其强度的同时实现重量的减轻,其制造方法和车辆轮胎。 制造方法是通过围绕环形芯螺旋地缠绕侧线而形成护套层来制造环形同心绞合胎圈帘线的方法。 在形成护套层之后,将侧线在减压惰性气体气氛中退火,其退火量超过用环形同心绞线珠子对车辆轮胎硫化所需的加热量(温度×时间) 帘线嵌入车轮胎的橡胶中,并且成形为“直径成形率(%)= H / D×100”变为20%以上且105%以下。
摘要:
A steel rope safety system includes at least one steel rope having at least one strand, and the at least one rope or at least one strand is compacted. Further, a method is provided for making a steel rope safety system comprising the step of providing at least two wires, the step of stranding the wires thereby forming a strand for a rope and the step of compacting the strand. There is likewise provided the use of compacted steel ropes as impact reducing material.
摘要:
A steel cord (200) is described that is simple and cost effective to produce while solving some particular problems for the reinforcement of elastomer belts such as timing belts or the like. The cord (200) is a single lay cord that comprises a core filament (202), around which a first layer and a second layer of filaments (204, 210, 212) is twisted, all filaments being twisted with the same lay length and direction. By appropriate choice of the lay length, the core filament diameter and the filament diameters of the first layer—the latter being larger or equal to the former—an aggregate gap can form in which intermittently a filament (210′) of the second layer gets entrained. This aggregate gap must be between 40 and 70% of the core filament diameter in order to obtain the desired effect of having a core filament (202) that is deformed with the same lay length and direction as the other filaments (204,210,212). A deformed core filament (202) suppresses the effect of core filament migration. In addition the exceptional rough aspect of the cord (200) leads to good mechanical anchorage in the elastomer. Also the load exerted on the cord (200) is better distributed over all filaments. The use of the cord is not limited to timing belts: an advantageous use of the cord in tyres, hoses, hoisting belts, drive belts and reinforcing strips is anticipated.
摘要:
A hybrid layered cable for use in tire reinforcement includes a non-metallic internal layer and an unsaturated external layer including 3-12 strands. Each strand is at least partly metallic and is helically wound around the internal layer. Each strand includes at least 3 filaments wound helically together. The cable has a relative elongation at break, measured in tension in accordance with the standard ISO 6892 of 1984, which is higher than 7%.
摘要:
A sling for industrial lifting made of a load-bearing core and a cover. The cover protects the plurality of yarns that make-up the core. Each core yarn is made of a number of core threads twisted together. The core yarns are twisted together where the twist is in the same direction as the individual core strands and a different direction than the twist of the cover. The present invention describes the method of twisting the core yarns together by inserting core yarns substantially parallel into a cover that has a twist opposite of each core strand. As the core strands are inserted into the cover, the twists of the individual core yarns interact with the twist of the cove, resulting in the core yarns twisting together.
摘要:
A steel cord that is especially useful for reinforcing a crown portion of a tire is provided. In particular, a steel cord free from manufacturing problems existed in the conventional art and allowing for stable quality and good production efficiency is provided, and a rubber-steel cord composite and a tire that are equipped with the same are provided.A steel cord has a multiple-twist structure including N (N=2 to 8) strands 2 that are twisted together, each strand 2 having a plurality of wires 1 that are twisted together. When the diameter of each strand is denoted by d (mm), the diameter of a circle circumscribing the cord is denoted by D (mm), and the twisting pitch of the cord is denoted by P (mm), εc defined by the following expression, εc=√(−b/2+√(b2/4−c))−1 (where b denotes −1+π2(−4R2+d2)/P2, c denotes π2d2k(4π2R2+P2)/P4, R denotes (D−d)/2, and k denotes tan2(π/2−π/N)), satisfies εc≧0.005.
摘要:
Disclosed is a fiber reinforced plastic wire used as the overhead transmission cable. The fiber reinforced plastic wire for a strength member of an overhead transmission cable according to the present invention includes a wire having a predetermined diameter and composed of thermoset matrix resin; and a plurality of high strength fibers dispersed parallel to a longitudinal direction in an inside of the wire, the high strength fibers being surface-treated with a coupling agent to improve interfacial adhesion to the matrix resin. The fiber reinforced plastic wire of the present invention has the high tensile strength at the room temperature and the high temperature since its high strength fiber is surface-treated with a coupling agent. The fiber reinforced plastic wire can be also effectively used as the strength member in the overhead transmission cable since it has the excellent low coefficient of thermal expansion, etc. and is light-weight.
摘要:
A reinforcing cord for rubber reinforcement of the present invention that is used for reinforcing a rubber product is provided with a plurality of strands. The strand includes bundled fibers and a coating layer formed so as to cover the bundled fibers. The plurality of strands are in tight contact with one another via the coating layer. The coating layer contains a material that is crosslinkable by thermal treatment. A method of manufacturing the reinforcing cord for rubber reinforcement includes the steps of (i) forming strands that include bundled fibers and a coating layer formed so as to cover the bundled fibers, and (ii) bringing the strands into tight contact with one another via the coating layer by twisting the strands together. The coating layer contains a material that is crosslinkable by thermal treatment.
摘要:
In order that spaces, including a space in the central portion, inside a steel cord used as a reinforcement by being embedded in a tire or the like are filled with an uncured rubber, the uncured rubber is coated on plural steel core filaments which are then stranded to form a single layer steel cord, the core then being stranded with uncoated outer layer filaments. Consequently, it is possible to exhibit satisfactory corrosion resistance and satisfactory fatigue resistance as a steel cord, shorten a curing time in tire component assembling or the like to attain energy saving and prolong the life of a steel cord itself and the life of a tire or the like using the same as a reinforcement. Further, production can be performed at low cost.
摘要:
A large-sized compound polyurethane elastomer submarine anchor cable to hold steady a offshore platform within a specific range defined by the anchors is comprised of outer layer made of polyurethane elastomer and carbon fiber mixed at a certain ratio, compressed and wrapping around aramid fiber or kelvar fiber or ultra-high-molecular-weight polyethylene (UHMWPE) fiber and a core of synthetic fiber rope with molecular malleability; the rope exposed from both ends of the cable each in a loop; and each loop having one or multiple layers of sheath to wrap around the rope at where closer to a tie on each end.