Abstract:
A method for producing a coated wire rope, the method comprising the steps of: guiding an element to a first wire coating device; applying a metal and metal coated grit to said element; guiding said element to a second wire coating device; and applying a metal coating over said metal and metal coated grit; where the element is a wire, twisting a plurality of elements to form a wire rope, or; where the element is a wire rope, twisting a plurality of wires to form said element.
Abstract:
Renfort filiforme, métallique ou métallisé (R), par exemple un fil, film, ruban ou câble en acier au carbone, à la périphérie duquel est disposée une couche de métal (Ms) dit « métal de surface » choisi parmi le cuivre, le nickel et les alliages de cuivre-nickel, cette couche de métal de surface (Ms) est elle-même revêtue, au moins en partie, d'au moins une couche de graphène (GR, GRf); de préférence, est greffé sur ce graphène au moins un groupe fonctionnel réticulable à une matrice de polymère. Ce renfort est protégé efficacement contre la corrosion grâce au graphène présent à leur surface (17); avantageusement, il peut être collé directement, sans primaire d'adhésion ni ajout de sel métallique à une matrice de caoutchouc insaturé tel que du caoutchouc naturel, grâce à la fonctionnalisation possible de ce graphène.
Abstract:
An elongated steel element adapted for the reinforcement of rubber products is covered with a ternary alloy or quaternary alloy coating of copper-M-zinc. M is one or two metals selected out of the group consisting of cobalt, nickel, tin, indium, manganese, iron, bismuth and molybdenum. The copper content inside the coating ranges from 58 weight per cent to 75 weight per cent. The content of the one or two metals inside said coating ranges from 0.5 weight per cent to 10 weight per cent. The remainder is zinc and unavoidable impurities. The one or two metals are present throughout the coating. Phosphorus is present on and/or in the coating in an amount of more than 1 and less than 4 milligram per square meter of the coating. The coating further comprises one or,ore compounds which complex with the copper in the coating to form an insoluble film on its surface. Good results are obtained for steam ageing and cured humidity adhesion. Furthermore, a corresponding method for manufacturing such an elongated steel element is disclosed.
Abstract:
A method for manufacturing a component includes a step of providing at least one metallic element. A surface of the at least one metallic element is modified to facilitate a bonding of the at least one metallic element to a polymeric layer. The polymeric layer is then bonded to the at least one metallic element to form the component.
Abstract:
A method for manufacturing a component includes a step of providing at least one metallic element. A surface of the at least one metallic element is modified to facilitate a bonding of the at least one metallic element to a polymeric layer. The polymeric layer is then bonded to the at least one metallic element to form the component.
Abstract:
A reinforcement means for moulded and extruded articles such as tires has a metal structure with a layer of silica gel bonded thereto. The silica gel bonds the reinforcement means to the rubber compound during the moulding/vulcanisation of the rubber compound without the need for a slow curing stage. The silica gel may be applied to the metal structure by a sol-gel process with the gel formed by drying the sol at a temperature up to 150°C. The reinforcement means is preferably a cable formed from steel wires coated with the silica gel. To further improve bonding of the silica gel to the rubber compound, an organosilane bonding agent may be included in the rubber compound or the reinforcing means provided with a second layer comprising an organosilane as a bonding agent. The reinforcement means are particularly useful for strengthening and providing geometric stability to tires.
Abstract:
The invention relates to cord (20) comprising a number of filaments twisted together. The peripheral surface of the cord (20) is at least partially coated with an adhesion promoting coating (24). The adhesion promoting coating (24) comprises at least a first layer comprising a silicon based coating, a titanium based coating, a zirconium based coating or a combination thereof. The invention further relates to a composite material comprising such a cord (20) embedded in a polymer material. Furthermore the invention relates to a method to manufacture such a cord (20).
Abstract:
A steel wire (10) is coated with a metal layer (14) such that the metal layer (14) has a surface with roughnesses (16). A surface roughness Ra of above 0.25 µm is reached. Preferably, the roughnesses are randomly dispersed at the surface. The result is an improved visual aspect and an increased resistance against corrosion.
Abstract:
A steel cord (10) for reinforcing rubber product comprised core strands (12) and outer strands (14), the outer strands (14) are helically twisted around the core strands (12). Each of the stands including core strands (12) and outer strands (14) comprises core steel filaments (20) with the number of m and outer steel filaments (22) with the number of n. the diameter of the core steel filament (20) in the core strand (12) is Dec, the diameter of the outer steel filament (22) in the core strand (12) is Doc, the diameter of the core steel filament (20) in the outer strand (14) is Deo, the diameter of the outer steel filament (22) in the outer strand (14) is Doo, the ratio of Dec/Doc is not less than 1.04, the ratio of Dco/Doo is not less than 103, the ratio of Doc/Deo is not less than 1. The core steel filaments (20) and outer steel filaments (22) are polygonally preformed before being twisted into strands. The steel cord (10) is used for reinforcing off-the-road tire.
Abstract:
A steel cord with a ternary or quaternary brass-based alloy coating is presented. The inventive steel cord shows a greatly improved under cure and regular cure adhesion behaviour to rubber compared to known ternary or quaternary brass- based alloy coatings. The adhesion retention after cured humidity aging or steam aging is equal to that of known ternary or quaternary brass based alloys coatings. This improved steel cord makes the use of cobalt containing ingredients in the rubber superfluous while still enjoying the improved adhesion retention. The surface of the inventive steel cord coating is characterised by the reduced presence of zinc or zinc containing compounds at the surface. More specifically very little zinc oxide is present on the surface compared to prior-art samples. A method to produce such a steel cord is also described and claimed as well as rubber articles comprising the steel cord and that use rubbers that are substantially free of cobalt.