Abstract:
Problems to be solved by the invention: It is an object of the present invention to provide a brass-plated steel wire for reinforcing rubber articles capable of surely improving adhesiveness between brass-plated steel wire and rubber and a method for manufacturing the same. Means for solving the problem: A brass-plated steel wire 10 for reinforcing rubber articles according to the invention comprises a steel wire having a brass-plating layer 11 thereon, wherein the brass-plating layer 11 has an amorphous portion 11a formed of crystal grains having a grain size of 20 nm or less. It may also be such that the brass-plating layer 11 is of a laminated structure 13 of an amorphous portion 11a on the surface side and a crystalline portion 11b on the inner side, wherein the amorphous portion 11a is formed of crystal grains having a grain size of 20 nm or less and the crystalline portion 11b is formed of crystal grains having a grain size of more than 20 nm.
Abstract:
A method of manufacturing a rubber reinforcing steel cord is provided, wherein the steel cord has a steel wire (1) plated with metal containing copper and having on its surface an oil layer (2) containing a cobalt compound, and includes an application step in which the oil containing a cobalt compound is applied to the steel wire or a steel cord plated with metal containing copper, and a step of twisting the steel wires.
Abstract:
A steel cord (16) adapted for the reinforcement of thermoplastic elastomers comprises more than one strand (18, 20). Each strand comprises two or more steel filaments (22, 24, 26, 28). At least some of said steel filaments are provided with a zinc coating (40), characterized in that said zinc coating (40) has a thickness lower than two micrometer and that an alloy layer zinc - steel (42) is present between the zinc coating and the steel.
Abstract:
A method of manufacturing a rubber reinforcing steel cord is provided, wherein the steel cord has a steel wire (1) plated with metal containing copper and having on its surface an oil layer (2) containing a cobalt compound, and includes an application step in which the oil containing a cobalt compound is applied to the steel wire or a steel cord plated with metal containing copper, and a step of twisting the steel wires.
Abstract:
A coated metal reinforcement element for polymeric or elastomeric materials comprises a coating of: a polymer or prepolymer compatible with and co-polymerizable, co-vulcanizable or cross-linkable with said polymeric or elastomeric material to be reinforced, and bearing functional groups; either covalently bonding to the metal surface of said reinforcement element; or forming covalent bonds with the outward directed first functional groups of a mono- or multimolecular layer of a bifunctional adhesion promotor intercalated between said metal and said coating and bound to said metal by its second functional groups. A method for the coating includes a one step and a two step procedure.
Abstract:
The invention concerns a hybrid steel cord comprising, in contact with one or several carbon steel wire(s), at least one stainless steel wire with its microstructure containing less than 20 % of martensite ( % in volume). The invention also concerns the use of at least one stainless steel wire in a steel cord comprising carbon steel wires, to improve by contact the fatigue-fretting-corrosion strength of theses carbon steel wires, and thereby the fatigue life of the steel cord itself. The invention further concerns cords as per the invention for reinforcing plastic and/or rubber articles and plastic and/or rubber articles reinforced with such cords, in particular tyre treads or body plies of such tyre treads.
Abstract:
A process is disclosed for manufacturing corrosion resistant cable. In the process, a corrosion resistant, organic based, alkyl silicate-zinc coating solution (14) is applied to wire (13) as the wire is twisted into cable. The solution dries on the wire in air, leaving an inorganic silicate-zinc coating on the wire. The cable is then coated with a plastic. The process is particularly useful for manufacturing brake cables.