Metal wire, manufacturing method thereof and tire

Abstract

The invention discloses a metal wire, a manufacturing method thereof and a tire. The metal wire is manufactured by stranding monofilaments. The outer circle face of each monofilament is covered with aCu-M-Zn alloy coating. The metal wire is characterized in that the outer circle face of each monofilament is covered with a Cu-Zn alloy coating, the number of the monofilaments for manufacturing themetal wire is at least one, the coverage area of each Cu-M-Zn alloy coating is 10-90% of the area of the outer circle face of each monofilament, and the rest are Cu-Zn alloy coatings; M in each Cu-M-Zn alloy coating is selected from one or two of cobalt, nickel, manganese and molybdenum; the mass fraction of copper in each Cu-M-Zn alloy coating is 58-72%, the mass fraction of M in each Cu-M-Zn alloy coating is 0.5-5%, and the balance in each Cu-M-Zn alloy coating is zinc and inevitable impurities. The metal wire has the beneficial effects that each monofilament for forming the metal wire is provided with two kinds of alloy coatings at the same time, and thus, the metal wire has good initial adhesive force and damp-heat aging adhesive force at the same time and is particularly applicable torubber components which do not contain cobalt.

Description

technical field [0001] The invention belongs to the technical field of rubber products, and in particular relates to a metal wire, a manufacturing method thereof and a tire. Background technique [0002] Metal wires consisting of brass-coated monofilaments are widely used to reinforce rubber products such as tires, conveyor belts, hydraulic pipes, etc. Cobalt complexes are added to rubber compounds in order to have good adhesive properties and to reduce the rate of deterioration of the adhesion, especially aging under humid heat conditions. [0003] In the prior art, a Cu-Co-Zn ternary alloy coating is used to replace the brass coating to ensure the moisture-heat aging adhesion between the metal wire and the cobalt-free rubber, and to make the rubber material have good durability. For example, the application number is "201280043391.4", the invention patent titled "metal wire for rubber reinforcement, its manufacturing method and tire" records that a certain amount of Cu is...

AI Technical Summary

Problems solved by technology

Co in the Cu-Co-Zn ternary alloy coating will inhibit the diffusion of Zn and prevent the loss of Zn, thereby improving the adhesion of wet heat aging. However, the diffusion of Zn in the initial stage will also be inhibited, resulting in the - Reduced initial adhesion of metal wires made of Zn ternary alloy-coated monofilaments to rubber

[0005] It can be seen that there is still no way to find a method that can make the metal wire have good initial adhesion and wet heat aging adhesion at the same time.

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