A high-strength steel cord with high penetration rate

Abstract

The invention discloses a high-strength steel wire cord with a high rubber infiltration rate, which comprises a middle core strand steel wire, wherein the periphery of the middle core strand steel wire is wrapped by a single-layer structure which is formed by twisting a plurality of steel wires; the section of the core strand steel wire is regularly square; and the circumscribed circle diameter (D core) of the core strand steel wire is greater than the diameter (d outside) of the outer surrounding steel wires. According the cord, a rich gap is created, and complete rubber infiltration can be excellently guaranteed during vulcanization of the cord; meanwhile, due to the irregular shape of the core strand steel wire, regularly square edges and corners are stably embedded in the surrounding steel wires at the periphery in a cross section structure diagram of the cord, so that self-rotation of the core strand steel wire is effectively avoided; and meanwhile, guarantee is provided for forming a large lay length, the problem of core emerging during core strand vulcanization is solved, and the production efficiency is increased.

Description

technical field [0001] The invention relates to the field of steel cords, in particular to a high-strength steel cord with high glue penetration rate. Background technique [0002] There are many twisting methods for steel cords used to reinforce rubber products such as pneumatic tires. The method used to ensure better penetration of rubber into the core strands is nothing more than increasing the diameter of the monofilament to ensure that the gap between the steel wires is tight. With regard to the gap method and the outer layer wires arranged around the core strand wire, the gap method is ensured by drawing several wires out of the maximum number that can be arranged around. In addition, more steel wires are currently used for multi-point pre-bending, and gaps are generated during twisting to enhance the need for glue penetration. The above commonly used measures to improve glue penetration also have good results. However, due to the pre-deformation of the steel wire un...

AI Technical Summary

Problems solved by technology

However, due to the pre-deformation of the steel wire under the action of external forces such as traction force and straightener extrusion during the cord twisting process, the original curvature is not equal, and the gap formed in the cord is also uncertain. Adhesive penetration will be discounted

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