Abstract:
A resin-coated high-tension flat steel wire includes a high-tension flat steel wire and a fiber-reinforced polyamide resin coated layer. A shape of the high-tension flat steel wire when viewed from a section perpendicular to a longitudinal direction thereof is a rectangular shape including curved portions at four comers thereof. When, among four straight lines that form the rectangular section, the ranges from both end points of the straight lines that form long sides to one fourth of the length of the straight lines are respectively defined as one-fourth segments, a shape of the fiber-reinforced polyamide resin coated layer in the rectangular section includes a mountain shape having an apex within each of the one-fourth segments, and includes a minimum point, where the thickness of the fiber-reinforced polyamide resin coated layer is the minimum, between the apex and both the ends within each of the one-fourth segments.
Abstract:
This wire (1) is for operation and has a multi-twisted structure constituted by twisting a plurality of side strands (3), each of which is formed by twisting together a plurality of wires (3a, 3b), around a core strand (2) formed by twisting a plurality of wires (2a, 2b, 2c, 2d) together. The wire (1) is characterized in that the side wire (3b) of the side strand (3) faces the outside of the wire (1) in the radial direction at a site located on the outer circumference of the wire (1) and has a flattened surface (P) in which a flat portion (F) provided in a portion of the side wire (3b) in the circumferential direction extends in the X axis direction, the length in the X axis direction of the flattened surface (P) being 4.8-11.0 times the diameter of the side wire (3b), and the pitch magnification of the side strand (3) being 7.0-12.0 times the diameter. As a result of the foregoing, it is possible to suppress the occurrence of groove movement direction noise caused when a direction change member and the wire slide against each other, and suppress a decrease in the fatigue resistance of the wire.
Abstract:
The invention relates to a cable (C) gummed in situ and including: an inner layer (CT1) of the cable including N1 internal wire(s); an outer layer (CT3) of the cable including N3 external wires helically wound around the inner layer of the cable; and a gumming rubber composition (20) placed between the inner layer of the cable and the outer layer of the cable. The rubber composition (20) includes a Formula (I) compound, or a salt of said compound, wherein: each group R1, R2, and R3 is independently an alkylene, arylene, arylalkylene, alkylarylene, or cycloalkylene group; each group X1 and X2 is independently -COOH, -CO-NH-OH, -SOOH, -PO(OR)(R') or -PO(OR)(OR'), R and R' independently being hydrogen or an alkyl group; and X3 contains at least one -COOH, -CO-NH-OH, -SOOH, -PO(OR)(R') or -PO(OR)(OR') group, R or R' independently being hydrogen or an alkyl group.
Abstract:
Metal cord (100, 200, 300, 510, 520, 530) for reinforcing elastomer products comprising n metal filaments (105, 210) twisted together in a cord twisting direction, all the metal filaments (105, 210) have the same cord twisting pitch, wherein at least one metal filament (210) has a cross section which deviates from a round cross section, e.g. a flat, oval or rectangular cross-section. The metal cord (100, 200, 300, 510, 520, 530) has high rubber penetration, high strength and high fatigue resistance. Also, the use of the metal cord (100, 200, 300, 510, 520, 530) for reinforcing rubber product, e.g. a breaker layer of a tire, is disclosed.
Abstract:
The invention pertains to the production of cables and can be used for reinforcing single-block constructions and other articles made of concrete. The purpose of the invention is to create a self-rectifying reinforcing member. The reinforcement cable comprises a central wire and layer-forming wires spirally wound around the same and having a periodical profile. A periodical profile is applied on the outer section of the surface of the layer-forming wires and is made in the form of inclined protrusions above the generatrix of the crimped surface of the cable. The sections of the surface of the layer-forming wires in contact with other wires are made in the form of spirally-arranged planar flats. The cable is secured at the base of the structure and is attached upon each casting cycle between the previously-formed portion of the structure and a distribution matrix. The cable is supplied via bypass rollers and a guiding trough from reels arranged at the base. Before each casting cycle, the matrix is moved by a distance corresponding to a section to be formed. Each reinforcing member is integral along the entire length of the structure. The connection of perpendicular members is made using inserts or a tie wire.
Abstract:
A first aspect of the present invention relates to a filament (11; 12), especially for reinforcing rubber articles. Said filament (11; 12) features a contact surface (14) and an outer surface (13). In a second aspect, the invention relates to a steel cord (10) comprising two of said filaments (11, 12), the contact surfaces (14) are arranged adjacent to each other. The outer surfaces (13) are configured arcuate shaped and provide a smooth outer contour (15) of the steel cord (10). Due to said construction the largest dimension (d) of the steel cord (10) and the thickness of a rubber coating (18) may be considerably reduced. Additionally the invention relates to a method of producing a steel cord (10) and to a tyre (20) comprising a carcass ply (22) and/or at least one belt (25; 26) including said steel cords (10).
Abstract:
A high tensile steel strand for civil engineering applications comprises a core wire (11) and a ring of outer wires (12) arranged in a helical pattern around the core wire and in contact with the core wire. The number and the diameter of the outer wires in relation to the core wire are such that there are significant gaps (13) between adjacent outer wires. The strand is used as an anchorage in rock and a bonding agent between the strand and the rock penetrates gaps (13) to provide effective bonding. The strand is sufficiently flexible to be inserted in deep bores in rock even when surrounding space does not permit straight insertion of the strand.