Abstract:
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.
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 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.
Abstract:
A multi-strand nylon rope having improved abrasion resistance comprised of a plurality of strands. Each strand is comprised of a plurality of yarns wherein each yarn is formed of a predetermined number of filaments. The filaments of each yarn are twisted together to form a yarn of a predetermined size, the twist direction being opposite that of the final ply yarn direction. For a right lay rope a sufficient number of filaments are twisted together in the left or "S" direction to produce a yarn of a predetermined size. Three or more yarns prepared in this manner are then plied or twisted together in the opposite or right direction. The cover for each strand is formed of alternate yarns of standard and oblong filaments, respectively, the oblong filaments having a modification ratio of three, forming a rope having increased abrasion resistance, a hand and feel that is not stiff or unmanageable and which resists strand-to-strand wet abrasion.
Abstract:
A method of stranding profiled strands comprises the steps of stranding a plurality of profiled strands (7) together around an optical fiber conductor or cable (2) which serves as a central core while imparting twist to each profiled strand by the use of a rigid type stranding machine, and then heat-treating the strands (7) along with the optical fiber conductor or cable (2) so as to remove strains or stress from the heat treated strands.
Abstract:
The disclosed method of making a shape-stranded rope includes twisting large wires into strands by twining them in at least one layer about a core with a sheathing of a soft deformable material, plastic drawing of the strands, forming the strands into a shaped profile and twisting the strands into the rope. The plastic drawing is effected until every round wire of the strand acquires a wedge-like profile, with the wires adjoining the sheathing becoming partly embedded in this sheathing, and the strand acquires a substantially smooth peripheral surface. The method enables, while using round wires, to increase the structural density of the strands, and also to enhance the flexibility, strength and wear resistance of the shape-stranded rope, the rope manufactured by the disclosed method being usable by various industries.
Abstract:
A multi-wire structure comprising an inner core member and one or more strips of flat wire wrapped helically about the core member. Each flat wire is helically twisted about its longitudinal axis by forming means to permanently deform it prior to being wrapped about the core member.
Abstract:
1,007,032. Prestressing wires. ARMCO STEEL CORPORATION. April 10, 1962 [April 13, 1961], No. 13787/62. Heading E1K. [Also in Division D1] A stranded cable for prestressing concrete comprises wires 10, 11 laid helically, but retaining the same cross-sectional orientation throughout the length of the strand, i.e. being not pivoted about their own axes. Any crosssection other than a simple circle, may be used, and other examples shown are elliptical, triangular, square, hexagonal and oval. It is stated that a wire may contain 0À8% carbon, 0À7% Manganese, 0À01% Phosphorus, 0À033% Sulphur and 0À2% Silicon.