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1.发明公开公开(公告)号：US20230332263A1
公开(公告)日：2023-10-19
申请号：US18131630
申请日：2023-04-06
Applicant: Hongduk Industrial Co., Ltd.
Inventor： Pyeong Yeol Park , Do Hun Kim
CPC classification number: C21D9/52 , B21F9/00 , B60C9/0007
Abstract: Provided are a steel cord and a single steel wire having excellent straightness quality for reinforcing tire and a method of manufacturing the steel cord and single steel wire. The steel cord and the single steel wire include a wire undergoing through a drawing process, a heating process performed in a state in which tension is applied to the wire, and a cooling process; and a winding portion on which the wire is wound, the winding portion having a diameter greater than a diameter of the wire, wherein, when an end of the wire that has been wound on the winding portion for six months to one year is fixed on a point and the wire is pulled down vertically to 400 mm, a distance between a first axis that is perpendicular to the point and an opposite end of the wire is 30 mm or less. The method of manufacturing the steel cord and single steel wire having excellent straightness quality for reinforcing tire includes: a wire preparing process, a heating process, a cooling process, and a winding process.
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Patent Agency Ranking
公开(公告)号：US20220119903A1
公开(公告)日：2022-04-21
申请号：US16756483
申请日：2020-03-03
Applicant: Hongduk Industrial Co., Ltd.
Inventor： Pyeong Yeol Park , Gi Hwan Kim
Abstract: Provided are a steel wire having excellent straightness quality and a method of manufacturing the steel wire, wherein the steel wire includes a wire, after undergoing a drawing operation, undergoing a heating operation of performing heating in a state in which tension is applied, and undergoing a cooling operation, wherein, when winding the wire around a winding portion having a diameter greater than a diameter of the wire for a preset period of time and then measuring straightness of the wire of 400 mm, the straightness of the wire is less than or equal to 30 mm, and the method includes a wire preparation operation, a heating operation, a cooling operation, and a straightness measurement operation.
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公开(公告)号：US11447886B2
公开(公告)日：2022-09-20
申请号：US16977012
申请日：2019-02-25
Applicant: Hongduk Industrial Co., Ltd.
Inventor： Pyeong Yeol Park , Ok Shil Park
Abstract: The present disclosure relates to an electroplated bead wire having excellent oxidation resistance, of which oxidation resistance and aging adhesive strength with tire rubber are improved by forming a copper- and cobalt-plated layer by electroplating. The electroplated bead wire includes the plated layer formed through electroplating, wherein the plated layer contains 40 to 99 wt % of copper and 1 to 40 wt % of cobalt.
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4.发明申请公开(公告)号：US20200165695A1
公开(公告)日：2020-05-28
申请号：US16623044
申请日：2018-03-20
Applicant: Hongduk Industrial Co., Ltd.
Inventor： Pyeong Yeol Park , Do Hun Kim
Abstract: Provided are a steel cord and a single steel wire having excellent straightness quality for reinforcing tire and a method of manufacturing the steel cord and single steel wire. The steel cord and the single steel wire include a wire undergoing through a drawing process, a heating process performed in a state in which tension is applied to the wire, and a cooling process; and a winding portion on which the wire is wound, the winding portion having a diameter greater than a diameter of the wire, wherein, when an end of the wire that has been wound on the winding portion for six months to one year is fixed on a point and the wire is pulled down vertically to 400 mm, a distance between a first axis that is perpendicular to the point and an opposite end of the wire is 30 mm or less. The method of manufacturing the steel cord and single steel wire having excellent straightness quality for reinforcing tire includes: a wire preparing process, a heating process, a cooling process, and a winding process.
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公开(公告)号：US12043879B2
公开(公告)日：2024-07-23
申请号：US18131630
申请日：2023-04-06
Applicant: Hongduk Industrial Co., Ltd.
Inventor： Pyeong Yeol Park , Do Hun Kim
CPC classification number: C21D9/52 , B21F9/00 , B60C9/0007
Abstract: Provided are a steel cord and a single steel wire having excellent straightness quality for reinforcing tire and a method of manufacturing the steel cord and single steel wire. The steel cord and the single steel wire include a wire undergoing through a drawing process, a heating process performed in a state in which tension is applied to the wire, and a cooling process; and a winding portion on which the wire is wound, the winding portion having a diameter greater than a diameter of the wire, wherein, when an end of the wire that has been wound on the winding portion for six months to one year is fixed on a point and the wire is pulled down vertically to 400 mm, a distance between a first axis that is perpendicular to the point and an opposite end of the wire is 30 mm or less. The method of manufacturing the steel cord and single steel wire having excellent straightness quality for reinforcing tire includes: a wire preparing process, a heating process, a cooling process, and a winding process.
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公开(公告)号：US20210002782A1
公开(公告)日：2021-01-07
申请号：US16977012
申请日：2019-02-25
Applicant: Hongduk Industrial Co., Ltd.
Inventor： Pyeong Yeol Park , Ok Shil Park
Abstract: The present disclosure relates to an electroplated bead wire having excellent oxidation resistance, of which oxidation resistance and aging adhesive strength with tire rubber are improved by forming a copper- and cobalt-plated layer by electroplating. The electroplated bead wire includes the plated layer formed through electroplating, wherein the plated layer contains 40 to 99 wt % of copper and 1 to 40 wt % of cobalt.
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