An electroplating solution for rare-earth metal electrodeposition and a preparation method for and a use of the electroplating solution. The electroplating solution comprises the following raw materials: a rare-earth metal salt, a complexing agent and water, wherein the content of the rare-earth metal salt in the electroplating solution is 0.15-0.55 mol/L, and the molar ratio of the complexing agent to the rare-earth metal salt in the electroplating solution is 1:(1.5-5). The preparation method comprises: putting water and the complexing agent in an electroplating bath, uniformly stirring, and adjusting the pH value to a first preset value; adding the rare-earth metal salt into the electroplating bath, uniformly stirring, and adjusting the pH value to a second preset value; and adding water to the electroplating bath to the required volume to obtain the electroplating solution for rare-earth metal electrodeposition. The electroplating solution for rare-earth metal electrodeposition is a simple and effective aqueous solution, the raw materials are easy to obtain, the costs are low, the preparation process is simple, high environmental protection and high safety are achieved, and a deposited rare-earth metal layer has uniform crystal grains.
Disclosed in the present invention are a rectangular tire bead wire and a manufacturing method therefor. The manufacturing method comprises the following steps: carrying out die drawing on a wire rod to obtain a circular-section wire; galvanizing the circular-section wire; and rolling the galvanized circular-section wire at least twice to obtain a rectangular-section wire, wherein first rolling is two-roll rolling: rolling the circular-section wire into a flat-section wire, and the remaining rolling is four-roll rolling: rolling the flat-section wire into a rectangular-section wire. The present invention improves the uniformity and compactness of a wire coating, thereby improving the general performance of the wire; also improves the toughness of the rectangular wire and the filling rate of the R angle of the wire; and simplifies the production process, and facilitates reduction of the production costs.
B21C 1/02 - Étirage des fils métalliques ou d'un matériau flexible analogue au moyen de machines ou d'appareils à étirer dans lesquels l'étirage est effectué par des tambours
B21B 1/18 - Méthodes de laminage ou laminoirs pour la fabrication des produits semi-finis de section pleine ou de profilésSéquence des opérations dans les trains de laminoirsInstallation d'une usine de laminage, p. ex. groupement de cagesSuccession des passes ou des alternances de passes pour laminer du fil métallique ou un matériau semblable de petite section selon un processus continu
Disclosed in the present invention is a pneumatic radial tire with composite steel cords, the pneumatic radial tire comprising a tread, a cap ply, sidewalls, a carcass and bead wires, wherein the tread extends in the circumferential direction of the tire, the cap ply is wrapped in the tread, a pair of sidewalls are arranged on two sides of the tread, the carcass is arranged on the inner sides of the sidewalls, the bead wires are arranged in the carcass, and composite steel cords for reinforcement of the carcass are arranged in the carcass, and are formed by twisting 1-strand textile yarns as a cored wire and N metal monofilaments as tread wires. According to the present invention, the load capacity of the tire is improved, the longitudinal rigidity of the tire is enhanced, the acceleration response time of the tire is shortened, and static electricity generated in a using process of vehicles is released in time by means of the tire.
Disclosed in the present invention are a position adjustment apparatus and method for a wave shape of a pre-deformed steel wire in a cord. The apparatus comprises a wire separating disc and a plurality of adjustment mechanisms; the plurality of adjustment mechanisms are circumferentially and uniformly distributed on the wire separating disc; each adjustment mechanism comprises a base and a movable wire guide wheel, and the movable wire guide wheel is movably connected to the base along the radial direction of the wire separating disc; a pre-deformed wave-shaped steel wire is wound around the movable wire guide wheel to a twisting point. The present invention improves the rubber penetration rate of the cord, and achieves production of a cord of a flat structure.
A steel cord, comprising a core strand (1), a middle strand (2), and an outer strand (3), wherein the core strand (1) is composed of one steel wire; the middle strand (2) is formed by twisting six steel wires around the one steel wire in the core strand (1), the diameters of the steel wires in the middle strand (2) being the same, and being equal to the diameter of the steel wire in the the core strand (1); and the outer strand (3) is formed by twisting at least ten steel wires around the six steel wires in the middle strand (2). The cross section of the steel cord is circular. The steel cord is applicable to a radial tire and has the advantage of stable arrangement. The steel cord can prevent the steel wire in the core strand from turning over to the outside of the steel wires in the middle strand during a manufacturing process, avoiding a change in cord arrangement, and thereby ensuring product performance.
A steel wire rope deformation device, which relates to the technical field of steel cord production. The steel wire rope deformation device comprises a roller (1), a fixed deformation mechanism (2), and a die pressing mechanism (3), which are coaxially arranged in sequence, wherein the fixed deformation mechanism (2) can rotate around an axis along with the roller (1). The roller (1) is provided with at least three adjustable deformation mechanisms (4) on the end surface close to the fixed deformation mechanism (2), the adjustable deformation mechanisms (4) being uniformly distributed in a ring shape around the axis of the roller (1). Each adjustable deformation mechanism (4) comprises a concave plate (41). Two fixed pressure rollers (42) located on the same horizontal plane and a movable pressure roller (43) located between the two fixed pressure rollers (42) are rotatably connected to an inner side wall of the concave plate (41); the movable pressure roller (43) can linearly slide along the perpendicular bisector between the two fixed pressure rollers (42); and the axes of the movable pressure roller (43) and the fixed pressure rollers (42) are parallel to each other and are perpendicular to the inner side wall of the concave plate (41). A displacement adjusting assembly (44) is disposed on the concave plate (41); the displacement adjusting assembly (44) is drivingly connected to the movable pressure roller (43) and is used for adjusting the relative position of the movable pressure roller (43). The device is adapted for steel wire rope production, and can sufficiently eliminate internal stress of strands, so as to stabilize the wave heights of ouer strands, thereby alleviating surface roughness and improving the product surface quality and the flatness of a cut-off opening; the device can also adjust the amount of deformation of a single strand without affecting the other strands, so that the wave heights of the outer strands can be precisely adjusted, and can be quickly adjusted to be consistent; thus, the device involves a simple operation and convenient use, and can adapt to steel wire ropes having different specifications.
A device and a method for measuring the rubber penetration rate of a steel cord. The device comprises a main body (1); a base (3) is provided on the main body (1); a fixation mechanism is provided on the base (3); one end of the fixation mechanism is provided with a pressure mechanism; a touch display screen (19) is provided on the main body (1); a holding block (4) is detachably connected to the inner side of the fixation mechanism on the base (3); the holding block (4) is located on the outer side of a product and is used for restricting the direction of deformation of the product; the touch display screen (19) is electrically connected to the pressure mechanism; the pressure mechanism applies pressure to one side of the product; and the touch display screen (19) records the pressure transmitted by the pressure mechanism. The device and the method can prevent excessively long products from bending and deforming in non-pressing directions when being pressed by force, so as to ensure that measurements are carried out normally and simultaneously ensure measurement accuracy, thus simplifying measurement work processes.
The present invention relates to the technical field of production of steel cords. Disclosed is a method for producing a layered steel cord. The method comprises: applying a pre-stress to part of monofilaments, apart from a core wire, in each layer to obtain pre-stressed monofilaments; and arranging conventional monofilaments and the pre-stressed monofilaments in each layer at intervals in a twisting machine tool, and twisting a layered steel cord. The present invention solves the problem in the prior art that during twisting of a steel cord, due to residual stresses in the monofilaments and fluctuations in tension during paying-off, the steel cord, which has layered structure, has large interlayer residual stress; and the distribution of the stress in the twisted layered structural steel cord is controlled by pre-applying a stress to the monofilaments, such that unevenness of cord fabric during calendering and warping during cutting when a tire is produced are avoided.
A layered steel cord and a manufacturing method therefor. The layered steel cord comprises a core-strand steel wire group and an outer-layer steel wire group; the core-strand steel wire group is formed by twisting two core-strand steel wires (1); the outer-layer steel wire group is arranged at the periphery of the core-strand steel wire group, and is formed by twisting five outer-layer steel wires (2) around the core-strand steel wire group; and the diameter of the core-strand steel wires (1) is smaller than the diameter of the outer-layer steel wires (2). The present invention can effectively solve the tip-rise problem of steel cords of a steel cord fabric during cutting due to the fact that the range of the tensile strength mean value of core-strand steel wires (1) and the tensile strength mean value of outer-layer steel wires (2) is large, causing that the residual torsion of inner-layer strands of the twisted steel cords cannot be eliminated.
D07B 1/06 - Cordes ou câbles de fils métalliques, p. ex. de fil métallique profilé autour d'un noyau de chanvre
D07B 7/02 - Parties constitutives des machinesDispositifs auxiliaires
D07B 3/00 - Machines ou appareillages d'application générale pour la production de cordes ou câbles retordus à partir de brins constitutifs faits de matériaux identiques ou différents
A steel cord for an engineering tire, comprising a cord body (30). The cord body (30) comprises a core strand (10) and five outer strands (20) twisted around the core strand (10); four wires are arranged in the core strand (10); the wires in the core strand (10) include two wires A having bendings which are repeatable in the length direction and rotatable by 360 degrees in the circumferential direction and two non-bending wires B; each outer strand (20) comprises a wire forming an outer strand core (21) and six wires forming an outer strand layer (22); and gaps (G) are formed between adjacent outer strands (20) and between the wires A and the wires B in the core strand (10), and used for rubber penetration. In the steel cord, the gaps (G) are formed between adjacent outer strands (20) and between the bent wires A and the wires B in the core strand (10) to form a rubber penetration structure, the penetration performance of rubber is greatly improved, so that the rubber is buried around steel wires at contact surfaces between the outer strands and the core strand, thereby improving the rubber penetration performance of the steel cord and the impact resistance performance of a tire, and prolonging the service life of the tire.
A bending-type steel wire fatigue tester, comprising: a steel wire fixing mechanism (4) for fixing a steel wire (15) to be tested; a counterweight mechanism (16) arranged on a bottom side of the steel wire fixing mechanism (4) and used for tensioning said steel wire (15); and an adjustment mechanism (21) arranged on the back of the counterweight mechanism (16) and used for supporting the counterweight mechanism (16) and adjusting the distance between the counterweight mechanism (16) and the steel wire fixing mechanism (4). By means of the bending-type steel wire fatigue tester, a single wire (15) is suspended and clamped on the steel wire fixing mechanism (4) in a free gravity state by means of the counterweight mechanism (16), and by means of the continuous clockwise and anti-clockwise rotation and swinging of the steel wire fixing mechanism (4), the single wire (15) is driven to continuously bend and deform so as to simulate repeated bending of a steel wire, thereby performing repeated bending tests on steel wires of different specifications under the condition of bearing a tension force. Moreover, the bending deformation frequency required by the test is high, and the clockwise and anti-clockwise rotation directly driven by a drive mechanism (21) cannot reach the required frequency; therefore, a link mechanism is added such that the reciprocating rotation motion having a high frequency can be implemented.
G01N 3/32 - Recherche des propriétés mécaniques des matériaux solides par application d'une contrainte mécanique en appliquant des efforts répétés ou pulsatoires
G01N 3/02 - Recherche des propriétés mécaniques des matériaux solides par application d'une contrainte mécanique Parties constitutives
12.
PULSE FATIGUE TESTING DEVICE AND METHOD FOR STEEL WIRE AND CORD
A pulse fatigue testing device and method for a steel wire and a cord, the pulse fatigue testing device comprising: a roller support (5), which is slidably mounted in the middle of a top end of a machine table, a bending roller group (4) being mounted on a front face of the roller support; and a driving mechanism, which is mounted on one side of the top end of the machine table and is used for driving the roller support (5) to horizontally reciprocate. By using the pulse fatigue testing device and method for a steel wire and a cord, when the driving mechanism drives the roller support (5) to reciprocate on the machine table, a connecting rod (8) can drive a lever support (12) to synchronously move on the machine table; as the lever support (12) moves, relative positions of a lever guide wheel (13) and a lever (11) periodically change, and a counterweight (14) applies a periodic pulling force, i.e., pulse pressure, to a sample to be tested (17) by means of the lever (11); in addition, the bending roller group (4) can cause said sample (17) to generate bending deformation, so as to simulate bending stress of a rubber-pipe steel wire. Thus, by utilizing the principle of the lever and by means of a simple mechanical structure, the pulse fatigue performance of the rubber-pipe steel wire is tested on the basis of a wire.
G01N 3/34 - Recherche des propriétés mécaniques des matériaux solides par application d'une contrainte mécanique en appliquant des efforts répétés ou pulsatoires engendrés par des moyens mécaniques, p. ex. chocs de marteau
Disclosed are a surface contact non-lay length adhesive-coated steel cord and a manufacturing method therefor. The steel cord is at least a three-layer structure comprising a core strand (9), an intermediate strand (8), and an external strand (7); the core strand (9), the intermediate strand (8), and the external strand (7) are integrally formed by bundle drawing; a gap between the core strand (9) and the intermediate strand (8) is greater than a gap between the intermediate strand (8) and the external strand (7), and the gap between the core strand (9) and the intermediate strand (8), and the gap between the intermediate strand (8) and the external strand (7) are both coated with a steel adhesive. The steel cord effectively solves the problems of layer twisting and stiffness reduction of a steel cord due to insufficient friction between steel wires.
A tire bead wire production line and production method. The production line comprises a pretreatment mechanism, a drawing mechanism, a tempering mechanism, an electrochemical plating mechanism and a posttreatment mechanism which are integrally arranged in sequence. An electrolytic pickling tank in the electrochemical plating mechanism comprises at least three pickling overflow trays, electrodes are arranged in the pickling overflow trays, and the electrodes comprise at least two cathodes and an anode. The electrochemical plating tank comprises at least one electrochemical plating overflow tray, and an anode is arranged in the electrochemical plating overflow tray. The anode in the electrochemical plating tank and one of the cathodes in the electrolytic pickling tank are respectively connected to a positive electrode and a negative electrode of an electrochemical plating power supply, and the anode in the electrolytic pickling tank and other cathodes are respectively connected to a positive electrode and a negative electrode of an electrolytic pickling power supply. An electrochemical plating layer is thicker, and the binding force between the plating layer and a base is better.
B21C 37/04 - Fabrication de tôles, barres, fils, tubes ou profilés métalliques ou de produits semi-finis similaires, non prévue ailleursFabrication de tubes de forme particulière des barres ou fils métalliques
Disclosed in the present invention are a steel cord, and a monofilament and a production method and production device therefor. The production method for the monofilament comprises the following steps: galvanizing the surface of a brass-coated steel wire to obtain a brass-coated steel wire with a zinc layer, wherein the gram weight of the zinc layer is 0.08-1 g/kg; and sequentially subjecting the brass-coated steel wire with the zinc layer to rinsing, wet drawing and take-up, so as to obtain a monofilament. The production device for a monofilament comprises a galvanizing bath, a rinsing bath, a wet-drawing machine tool and a monofilament take-up wheel, which are sequentially arranged. In the present invention, by controlling the gram weight of the zinc layer, zinc oxide on the surface of the monofilament after wet drawing is kept in a range of 0.05 g/m2to 0.2 g/m2, such that the monofilament and a steel cord have a better aging adhesion retention rate without sacrificing the initial adhesive force.
A steel cord having a 2+1+6 structure and a manufacturing method therefor. The steel cord comprises an inner layer (111), a middle layer (222) and an outer layer (333), the inner layer (111) consisting of two inner layer steel wires twisted with each other, the middle layer (222) consisting of one middle layer steel wire twisted outside the inner layer (111), and the outer layer (333) consisting of six outer layer steel wires twisted outside the middle layer (222), wherein the lay length of the middle layer steel wire is different from the lay length of the inner layer steel wires and the lay length of the outer layer steel wires. The steel cord having a 2+1+6 structure is produced by means of a one-step method, achieving high production efficiency and low costs. The manufactured steel cord has better rubber penetration performance, improving the compression resistance of the steel cord and lower the content of air in the steel cord, thereby prolonging the service life of tires.
D07B 1/06 - Cordes ou câbles de fils métalliques, p. ex. de fil métallique profilé autour d'un noyau de chanvre
D07B 3/00 - Machines ou appareillages d'application générale pour la production de cordes ou câbles retordus à partir de brins constitutifs faits de matériaux identiques ou différents
17.
STEEL CORD AND PRODUCTION METHOD THEREFOR, AND TIRE
A steel cord and a production method therefor, and a tire. The steel cord is formed by twisting a plurality of steel wires, and at least one of the steel wires is deformed to make the cord have an uneven surface appearance, which is positioned at the same position of the cord in an axial direction, wherein the same position refers to one position or two symmetrical positions, so that the cord has a long diameter (D1) and a short diameter (D2) with unequal values on a cross section. The uneven surface appearance of the cord is positioned at the same position of the cord in the axial direction, and breaks the uniform supporting state of the steel wires of the cord in a circumferential direction, and thus it is difficult for the cord to maintain an original circular cross section shape in a subsequent stress-relieving process of the cord, such that a cord having a flat structure can be produced. The flat cord is produced by means of the uneven surface appearance, and therefore the production process is controllable and convenient; and the rubber penetration rate of the cord is also increased by always arranging the uneven surface appearance on one or both sides of the cord.
A steel wire deformation device and use method therefor, and a cord production device. The deformation device comprises a plurality of pairs of deformation unit groups, wherein each deformation unit group comprises two engaged deformation units (1-10); each pair of deformation unit groups at least comprise one deformation unit (1-10) having part of convex teeth; and a plurality of deformation units (1-10) having part of convex teeth are sequentially arranged in a circumferential direction at an interval of alpha degrees according to the convex teeth. The steel wire deformation device can cause passed steel wires to form a periodic deformation sequentially, and during subsequent twisting, the steel wires pass through a twisting point to form a flat cord having a high permeability.
A bead wire (10) and a manufacturing method. The carbon content of a base surface layer (12) of the bead wire (10) is 1.01-1.50 times the carbon content of a base. The manufacturing method comprises: S1, processing a wire to obtain a preset wire diameter; S2, tempering the wire; S3, carrying out surface carburization treatment on the wire, so that the carbon content of the base surface layer (12) of the wire is 1.01-1.50 times of the carbon content of the base; and S4, after the wire is cleaned, applying a plating (11) to obtain a finished bead wire (10). Step S3 may be performed before or after S2. The bead wire (10) has a good adhesive force.
A steel cord having a glue permeation structure and a preparation method for the steel cord. The steel cord comprises a core wire (11), wherein the core wire (11) is a monofilament with the diameter of d0, and n layer wires are twisted around the core wire (11) in the same twisting direction and at different twisting pitches; the layer wires comprise a middle layer wire (22) and an outer layer wire (33), the middle layer wire (22) comprises four monofilaments with the diameter of d1, and the outer layer wire (33) comprises nine monofilaments with the diameter of d2, wherein the diameters of the core wire (11), the middle layer monofilaments and the outer layer monofilaments satisfy the following relationship: d0 < d1 < d2; and gaps L are reserved among the monofilaments of the outer layer wire (33), and gaps L1 are reserved among the monofilaments of the middle layer wire. The preparation method comprises: preparing three kinds of wet-drawn steel wires, the diameters of which are d0, d1 and d2 respectively, and twisting same into a steel wire having a "1+4+9" structure, so as to obtain a steel cord with a glue permeation performance. The improvement of the glue coating performance of the steel cord can enhance the corrosion resistance, the fatigue resistance, the impact resistance and the adhesion retention of a tire, thereby prolonging the service life of the tire.
A manufacturing method for a monofilament steel cord and a steel wire stress relieving device. The manufacturing method for a monofilament steel cord comprises steps of pretreatment for a steel wire rod, dry drawing, heat treatment electroplating, wet drawing, stress relief, straightening, and wire winding. The stress relieving device comprises a heating coil (3) and a straightener (1), the heating coil (3) and the straightener (1) are sequentially arranged in a direction of steel wire conduction, and one side of the straightener (1) is provided with an air-cooling chip removing device (2). According to the manufacturing method for a monofilament steel cord, a step of stranding is not performed after the step of wet drawing, the residual stress of the monofilament steel cord is relieved by the steel wire stress relieving device, the product quality and the production efficiency are improved, and the manufacturing cost is reduced.
B21C 1/02 - Étirage des fils métalliques ou d'un matériau flexible analogue au moyen de machines ou d'appareils à étirer dans lesquels l'étirage est effectué par des tambours
B21C 9/00 - Refroidissement, chauffage ou lubrification du matériau à étirer
B21C 19/00 - Dispositifs pour redresser le fil métallique ou d'autres produits analogues combinés à des machines ou des appareils à étirer ou à enrouler, ou spécialement conçus pour travailler en association avec ces machines ou ces appareils
C21D 9/52 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour fils métalliquesTraitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour bandes métalliques
Disclosed is a compact steel cord. The steel cord comprises one core wire I steel wire having a diameter of d0, and 4 middle layer M steel wires having a diameter of d1 and 8 outer layer O steel wires having a diameter of d2, which surround the core wire I steel wire and are twisted in the same twisting direction and the same twisting length, gaps L are reserved between the outer layer O steel wires, the average width of the gaps L is not less than 0.02 mm, and the total size of the gaps L is greater than d0 and less than d1. By means of the designed steel cord, which has a 1+4+8 structure, of the present invention, not only can the steel cord having a stable structure be obtained by controlling the size ratio of layers of single wires, but the rubber coating performance of the tire cord can also be improved, thereby improving the corrosion resistance, fatigue resistance, impact resistance performance and bond retention of a tire, and prolonging the service life of the tire.
Disclosed in the present invention are a steel cord and a manufacturing process therefor, comprising one core steel wire located at the center and having a diameter of d, and M sheath-layer steel wires arranged around the core steel wire at the center, tangent to the core steel wire, and having a diameter of d1. At least two gaps L exist between the M sheath-layer steel wires, wherein M is 4. The d, d1, and L satisfy the following relationship: 0.420<(d/d1)<0.800, wherein d1 is 0.20 mm-0.44 mm, and L≥0.0008 mm. According to the steel cord of the present invention, rubber can be sufficiently permeated into the gaps, thereby reducing air content in the steel cord, avoiding point contact friction between multiple layers of steel wires due to insufficient permeation of rubber, and solving the problem that the bearing capacity of a steel cord fails due to abrasion; moisture immersed into the inside of a steel cord from an external cut of the surface of a tire may be prevented from being immersed into gaps inside the hollow steel cord, thereby improving corrosion resistance, fatigue resistance and impact resistance of the tire, and prolonging service life of the tire.
24444 concentration within the cleaning trough is too high, the solution within the cleaning trough directly flows back to the galvanization trough, and simultaneously a new solution enters into the cleaning trough from the galvanization trough by means of supplemental addition of the adjustment trough. The cleaning method used for replacing phosphating for thermal diffusion electroplated wire of the present invention can replace a phosophorus-containing cleaning solution, has a low cost, and does not cause pollution.
Disclosed is a one-step post-plating treatment method for electroplating a brass steel wire, comprising the following steps: electroplating the surface of a steel wire with a brass alloy; immediately washing the electroplated steel wire by using cold water, removing residue from the surface of the steel wire, and blow-drying by using cold air; immersing the blow-dried steel wire in a water-based coating liquid; and removing the immersed steel wire, blow-drying same by using natural air, and taking same up. The water-based coating liquid comprises polyoxyethylene organic salt and sodium hypophosphite and the remainder is pure water, the polyoxyethylene organic salt being alkyl polyoxyethylene ether phosphate and polyoxyethylene alkylamine. The immersion duration for immersing the steel wire in the water-based coating liquid is 3-5 s, the pH of the water-based coating liquid is 8±0.3, and the temperature is 65-85°C. In the one-step post-plating treatment method for electroplating a brass steel wire of the present invention, passivation, washing and drying processes may be omitted, reducing the process flow; meanwhile, the treatment process is environmentally-friendly.
C23C 22/62 - Traitement du fer ou des alliages à base de fer
C23C 22/73 - Traitement chimique de surface de matériaux métalliques par réaction de la surface avec un milieu réactif laissant des produits de réaction du matériau de la surface dans le revêtement, p. ex. revêtement par conversion, passivation des métaux caractérisé par le procédé
26.
STEEL CORD AND MANUFACTURING METHOD THEREFOR, AND TIRE
A steel cord (20) and a manufacturing method therefor, and a tire. The steel cord (20) comprises at least one strength element (30), wherein the strength element (30) has periodic discontinuous crest curves; and the crest curves are always arranged on one side or two sides or multiple sides of the steel cord (20).
D07B 1/06 - Cordes ou câbles de fils métalliques, p. ex. de fil métallique profilé autour d'un noyau de chanvre
B60C 9/20 - Structure ou disposition des ceintures, des couches de protection, des couronnes de renforcement ou des couches amortissantes constituées par des nappes gommées ayant chacune leurs fils disposés sensiblement en parallèle
A production apparatus for a multilayered strand steel wire rope. By fixing a pre-deformer (3) to a cylinder (1), and limiting the specific position of the pre-deformer (3), a center steel wire of an outer wound strand (7) is prevented from outward protrusion and core exposure; the product quality of the multilayered strand steel wire rope is effectively improved, the product rejection rate is reduced, and the cost is reduced.
D07B 3/00 - Machines ou appareillages d'application générale pour la production de cordes ou câbles retordus à partir de brins constitutifs faits de matériaux identiques ou différents
D07B 7/02 - Parties constitutives des machinesDispositifs auxiliaires
Steel wire; wire gauze; wire of common metal alloys, except
fuse wire; steel fiber; wire rope; ironmongery; soldering
wire of metal; steel, unwrought or semi-wrought; steel
tubes; buildings of metal.
(1) Steel wire; wire gauze; wire of common metal alloys, except fuse wire; steel fiber; wire rope; metal hardware screws; soldering wire of metal; steel, unwrought or semi-wrought; steel tubing for HVAC, automotive, oil and gas, fluid power, power generation and recreational vehicle industries; transportable buildings of metal, namely, metal sheds.
A cable-type bead and a tire. The cable-type bead comprises a core wire (31, 41, 51, 61) located in a center position of the bead, and at least one layer of outer winding wires (32, 42, 52, 62, 63) wound around the core wire. Each layer of outer winding wires (32, 42, 52, 62, 63) is evenly wound along a circumferential direction of the core wire (31, 41, 51, 61). A cross-section of the outer winding wire (32, 42, 52, 62, 63) is a flat shape comprising a major axis and a minor axis, wherein the major axis is perpendicular to a radial direction of the cross-section of the bead, and the minor axis is parallel to the radial direction of the cross-section of the bead. The outer winding wire (32, 42, 52, 62, 63) makes surface contact with the core wire (31, 41, 51, 61). When there are at least two layers of outer winding wires (32, 42, 52, 62, 63), linear contact is formed between the layers of outer winding wires (32, 42, 52, 62, 63). The invention reduces an arrangement gap and the dimensions of a cross-section, while also increasing the strength of the cross-section and reducing a stress concentration in the bead, thereby prolonging the service life of the bead.
A steel cord (10; 40) for reinforcing a rubber product and the rubber product. The steel cord comprises core wires (21, 22; 51, 52) and outer wires (11; 41, 42), wherein the core wires (21, 22) are circular wires, and the outer wires (11; 41, 42) are flat wires. There are two to four core wires (21, 22; 51, 52) arranged in parallel. There is one to four outer wires (11; 41, 42). When there is one outer wire (11; 41, 42), the outer wire is spirally intertwined on the core wires (21, 22; 51, 52). When there are two to four outer wires (11; 41, 42), the outer wires are spirally intertwined on the core wires (21, 22; 51, 52) in parallel. The outer wires (11; 41, 42) and the core wires (21, 22; 51, 52) are intertwined in a line contact mode. The steel cord structure can reduce stress concentration and improve the strike-through performance and anti-fatigue performance.
Disclosed are a metal wire, a manufacturing method therefor, and a tire. The metal wire is manufactured by twisting monofilaments; an outer peripheral surface of each monofilament is covered with a Cu-M-Zn alloy coating; the outer peripheral surface of each monofilament is further covered with a Cu-Zn alloy coating; there is at least one monofilament from which the metal wire is made; a coverage area of the Cu-M-Zn alloy coating is 10-90% of the area of the outer peripheral surface of each monofilament, and the rest is the Cu-Zn alloy coating; M in the Cu-M-Zn alloy coating is selected from one or two of cobalt, nickel, manganese, and molybdenum; the mass fraction of copper in the Cu-M-Zn alloy coating is 58-72%, the mass fraction of M in the Cu-M-Zn alloy coating is 0.5-5%, and the balance in the Cu-M-Zn alloy coating is zinc and inevitable impurities. The present invention has the beneficial effects that the metal wire is good in both initial adhesion and damp-heat aging adhesion, and is particularly applicable to a cobalt-free rubber component because each monofilament that forms the metal wire is provided with two kinds of alloy coatings at the same time.
B21C 37/04 - Fabrication de tôles, barres, fils, tubes ou profilés métalliques ou de produits semi-finis similaires, non prévue ailleursFabrication de tubes de forme particulière des barres ou fils métalliques
B29B 15/08 - Prétraitement de la matière à façonner non couvert par les groupes d'agents de renforcement ou des charges
A woven steel wire belt ply structure, positioned between a tire tread and a tire body. The woven steel wire belt ply structure is a woven steel wire cord fabric layer consistent with the circumferential direction of a tire and comprises a plurality of A strands, a plurality of B strands, and a plurality of C strands; each of the plurality of A strands and of the plurality of B strands are interwoven to form a woven twill mesh; the plurality of C strands are interleaved between the A strands and B strands longitudinally. The woven steel wire belt ply structure is used individually or is fitted to a first belt ply to replace second to fourth belt plies, so that the paving step of multiple belt plies is simplified; the shoulder deformation of the tire is effectively constrained; the belt ply stress and the distribution of the tire tread grounding pressure are optimized; the durability, wear resistance, and load performance are improved; and oil consumption is reduced.
B60C 9/18 - Structure ou disposition des ceintures, des couches de protection, des couronnes de renforcement ou des couches amortissantes
B60C 9/20 - Structure ou disposition des ceintures, des couches de protection, des couronnes de renforcement ou des couches amortissantes constituées par des nappes gommées ayant chacune leurs fils disposés sensiblement en parallèle
An open braided steel cord. The steel cord is flat and comprises three groups of steel wires that are interwoven at certain braiding intervals in reciprocating manner. A first group of steel wire (21) crosses over a third group of steel wire (41) and is disposed between the third group of steel wire (41) and a second group of steel wire (31); the second group of steel wire (31) crosses over the first group of steel wire (21) and is disposed between the third group of steel wire (41) and the first group of steel wire (21); the third group of steel wire (41) crosses over the second group of steel wire (31) and is disposed between the second group of steel wire (31) and the first group of steel wire (21); the first group of steel wire (21) crosses over the third group of steel wire (41) and is disposed between the second group of steel wire (31) and the third group of steel wire (41), and the cycle is repeated in such way. The open braided steel cord can effectively absorb and bear the force from a longitudinal axis direction; the edges of the steel cord are corrugated, and large gaps are provided between the steel wires; the center of the steel cord is provided with a rubber filling space, thereby effectively improving the impregnating rate.
(1) Steel cord for making vehicle and aircraft wheel tyres; steel wire for making vehicle and aircraft wheel tyre tubes; steel wire for making plastic pipes and tubes; steel wire; iron wire; wire of common metal alloys, except fuse wire; wire rope; wire of common metal.
