摘要:
A method for producing elastomer/steel wire composites, comprising the steps of drawing a steel wire through a plurality of wire drawing dies, and coating the steel wire with an elastomer within 30 seconds after the steel wire has passed through the final wire drawing die. A device for producing elastomer/steel wire composites, comprising a wire drawing device for drawing a steel wire through a plurality of wire drawing dies, and a coater for coating the steel wire with an elastomer, the coating being completed within 30 seconds after the steel wire has passed through the final wire drawing die of the wire drawing device.
摘要:
A method for producing nonvulcanized rubber/steel wire composites, comprising the steps of continuously drawing a steel wire, feeding the drawn steel wire to a rubber coater without winding the steel wire, and coating the steel wire with nonvulcanized rubber. A device for producing nonvulcanized rubber/steel wire composites, comprising a wire drawing device for continuously drawing a steel wire, and a rubber coater for coating the steel wire with nonvulcanized rubber, wherein the steel wire drawn by the wire drawing device is led to the rubber coater without being wound.
摘要:
A surface-treated steel wire for reinforcing structures for articles of manufacture made of vulcanized elastomeric material, in which the said wire is coated with a layer of metal alloy, wherein the said alloy is a zinc/manganese binary alloy comprising from 0.3 to 4.9 % by weight of manganese.
摘要:
The present invention relates to a process for producing a hollow body of fibre-reinforced thermoplastic, and an arrangement for performing the process. In the process a continuous fibre bundle (3) is transported from means of transport (2). A section of the continuous fibre bundle (3) is heated up and the fibres in the section are impregnated with a thermoplastic. The impregnated fibre section is applied to a core-moulding tool (6), capable of controllable rotation about a shaft and located in an oven (5) with separate temperature control (5a). The angle or rotation of the core-moulding tool, together with the axial application position of the fibre section and the rate of feed of the fibre section are controlled in order to produce a hollow body with a pre-determined configuration on the core-moulding tool (6). The oven temperature is also controlled so that the thermoplastic on the core-moulding tool (6) is viscous during application. The tension in the fibre section is also controlled so that the fibres remain continuous and essentially extended whilst the process is being carried out. Application to the core-moulding tool (6) is terminated when the hollow body has taken on a pre-determined configuration, following which the rate of cooling of the hollow body is controlled by means of a separate temperature control for the oven (5a).
摘要:
Procédé de fabrication d'un élément composite longiligne comportant un faisceau (20) de fibres multifilamentaires noyées dans une composition à base d'une matière polymérisable comportant les étapes suivantes : - réaliser un arrangement de fibres multifilamentaires sous forme de plusieurs brins individuels, de manière à ce qu'un premier brin (20a) soit situé au centre du faisceau et que les autres brins soient agencés autour du premier brin, - entrainer ledit arrangement de fibres multifilamentaires pour le soumettre, dans la direction d'avancement, à : - un dégazage dudit arrangement de fibres par l'action du vide, - une imprégnation dudit arrangement de fibres par ladite composition, - un passage du premier brin imprégné dans une première filière (10a) qui réalise sa polymérisation partielle, - un passage de tous les brins dans une dernière filière (10f) qui les rassemble en un monobrin (20f); - une exposition dudit monobrin (20f) à une source de rayonnement pour réaliser une polymérisation supplémentaire de façon à obtenir ledit élément composite longiligne.
摘要:
A simple, cost effective Precision Shaped Tow Manufacturing system can produce high tolerance, dimensionally accurate, ready to use, Unidirectional Resin Impregnated Fiber Tow, Shaped Tow, in one procedure by a single machine that is precise enough to support Automatic Fiber Placement, AFP and Automatic Tape Laying specifications, ATL. The tow shaping system may include a Rotating Forming System, a Static Forming System, or both. A flash cooling chiller is provided to instantaneously set the tow to lock in the shape with a high tolerance.
摘要:
The invention relates to a process for the production of a tape comprising a plurality of sheathed continuous multifilament strands, wherein each of the sheathed continuous multifilament strands comprises a core that extends in the longitudinal direction and a polymer sheath which intimately surrounds said core, wherein each of the cores comprises an impregnated continuous multifilament strand comprising at least one continuous glass multifilament strand, wherein the at least one continuous glass multifilament strand is impregnated with an impregnating agent, wherein the process comprises the steps of: d) providing the plurality of sheathed continuous multifilament strands, e) placing the plurality of sheathed continuous multifilament strands in parallel alignment in the longitudinal direction, f) grouping the plurality of sheathed continuous multifilament strands, wherein steps e) and f) are performed such that the sheathed continuous multifilament strand can be consolidated and g) subsequently consolidating the plurality of sheathed continuous multifilament strands to form the tape, wherein the sheathed continuous multifilament strands are prepared by the sequential steps of a) unwinding from a package the continuous glass multifilament strands, b) applying the impregnating agent to the continuous glass multifilament strands to form the impregnated continuous multifilament strands and c) applying the sheath of the thermoplastic polymer composition around the impregnated continuous multifilament strands to form the sheathed continuous multifilament strands, wherein the sheathed continuous multifilament strands of step d) are the sheathed continuous multifilament strands obtained by step c) and wherein the sheathed continuous multifilament strands of step d) are subjected to step e) without cutting.
摘要:
A system is disclosed for use in additively manufacturing a composite structure. The system may include a head having a nozzle configured to discharge a composite material, including a matrix and a continuous reinforcement. The system may also include a cure enhancer configured to enhance curing of the matrix, and a support configured to move the head during discharging to create a structure having a three-dimensional trajectory. The system may further include a cutting mechanism operatively mounted to at least one of the head and the support, and configured to sever the continuous reinforcement after discharge from the nozzle. The cutting mechanism may include a blade, and an ultrasonic energy source connected to the blade.
摘要:
The present invention relates to a process for the manufacture of a long glass fibre reinforced polypropylene composition at a line speed of at least 6.7 m/s comprising the steps of a) providing at least one continuous glass multifibre strand, b) applying from 0.5 to 20 wt.% based on the weight of the composition of an impregnating agent to said at least one continuous multifibre strand, c) applying a sheath of a polypropylene composition around the strand obtained in step b) so as to form a sheathed continuous multifibre strand, wherein the impregnating agent contains at least 90 wt.% of microcrystalline wax based on the weight of the impregnating agent.