PLATED STEEL WIRE, METHOD OF MANUFACTURING PLATED STEEL WIRE, STEEL CORD, AND RUBBER COMPOSITE

• US 20190322138A1
• Filed: 12/19/2017
• Published: 10/24/2019
• Est. Priority Date: 12/19/2016
• Status: Abandoned Application

• Current Assignee: Nippon Steel Corporation
• Original Assignee: Nippon Steel Corporation
• Inventors: KODAMA, Junichi
• Application Number:
  US16/470,527
• Publication Number:
  US 20190322138A1
• Time in Patent Office: Days
• CPC Class Codes: B60C 2009/0014 Surface treatments of steel cords
• CPC Class Codes: B60C 9/00 Reinforcements or ply arrangement of pneumatic tyres inserts having reinforcing means B60C5/08; bead structure, e.g. turnup or overlap construction, B60C15/00
• CPC Class Codes: B60C 9/0007 Reinforcements made of metallic elements, e.g. cords, yarns, filaments or fibres made from metal
• CPC Class Codes: C21D 9/52 for wires; for strips ; for rods of unlimited length
• CPC Class Codes: C21D 9/64 Patenting furnaces
• CPC Class Codes: C22C 38/00 Ferrous alloys, e.g. steel alloys cast-iron alloys C22C37/00
• CPC Class Codes: C22C 38/002 containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
• CPC Class Codes: C22C 38/02 containing silicon
• CPC Class Codes: C22C 38/04 containing manganese
• CPC Class Codes: C22C 38/18 containing chromium
• CPC Class Codes: C22C 9/04 with zinc as the next major constituent
• CPC Class Codes: C25D 5/10 Electroplating with more than one layer of the same or of different metals for bearings C25D7/10
• CPC Class Codes: C25D 5/50 by heat-treatment
• CPC Class Codes: C25D 5/625 Discontinuous layers, e.g. microcracked layers
• CPC Class Codes: C25D 7/06 Wires; Strips; Foils
• CPC Class Codes: C25D 7/0607 Wires
• CPC Class Codes: D07B 1/06 Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
• CPC Class Codes: D07B 1/162 characterised by a plastic or rubber enveloping sheathing
• CPC Class Codes: D07B 2501/2046 Tire cords

Abstract

Provided is a plated steel wire including: a steel wire; and a brass plating layer covering the surface of the steel wire and composed of Cu, Zn, Al, and impurities in which, assuming the total of Cu, Zn, and Al to be 100% by mass, the Cu content is from 60% by mass to less than 70% by mass and the Al content is from 5.5% by mass to less than 15% by mass, and the average thickness is from 180 nm to 2,000 nm.

Claims

1. A plated steel wire comprising:

a steel wire; and

a brass plating layer covering an outer peripheral surface of the steel wire and composed of Cu, Zn, Al, and impurities, in which, assuming a total of Cu, Zn, and Al to be 100% by mass, a Cu content is from 60% by mass to less than 70% by mass and an Al content is from 5.5% by mass to less than 15% by mass, and an average thickness is from 180 nm to 2,000 nm.

2. The plated steel wire according to claim 1, wherein a diameter of the plated steel wire is from 0.10 mm to 0.40 mm.

3. A method of manufacturing the plated steel wire according to claim 1, the method comprising:

in a case in which the steel wire, the brass plating layer, and the plated steel wire are a first steel wire, a first brass plating layer, and a first plated steel wire, respectively;

a process of preparing a second plated steel wire including a second steel wire, and a second brass plating layer composed of Cu, Zn, Al, and an impurities, in which, assuming a total of Cu, Zn, and Al to be 100% by mass, a Cu content is from 60% by mass to less than 70% by mass, and an Al content is from 5.5% by mass to less than 15% by mass, and the second brass plating layer covering an outer peripheral surface of the second steel wire; and

a process of obtaining the first plated steel wire including the first steel wire and the first brass plating layer by wire drawing the second plated steel wire.

4. The method of manufacturing a plated steel wire according to claim 3, wherein the wire drawing is wet wire drawing that is non-slip type and that satisfies a condition that a back tension acting on the second plated steel wire is from 5% to 20% of a breaking load of the second plated steel wire.

5. A steel cord comprising the plated steel wire according to claim 1.

6. A rubber composite comprising:

the plated steel wire according to claim 1; and

rubber.

7. A method of manufacturing the plated steel wire according to claim 2, the method comprising:

in a case in which the steel wire, the brass plating layer, and the plated steel wire are a first steel wire, a first brass plating layer, and a first plated steel wire, respectively;

a process of preparing a second plated steel wire including a second steel wire, and a second brass plating layer composed of Cu, Zn, Al, and an impurities, in which, assuming a total of Cu, Zn, and Al to be 100% by mass, a Cu content is from 60% by mass to less than 70% by mass, and an Al content is from 5.5% by mass to less than 15% by mass, and the second brass plating layer covering an outer peripheral surface of the second steel wire; and

a process of obtaining the first plated steel wire including the first steel wire and the first brass plating layer by wire drawing the second plated steel wire.

8. The method of manufacturing a plated steel wire according to claim 7, wherein the wire drawing is wet wire drawing that is non-slip type and that satisfies a condition that a back tension acting on the second plated steel wire is from 5% to 20% of a breaking load of the second plated steel wire.

9. A steel cord comprising the plated steel wire according to claim 2.

10. A rubber composite comprising:

the plated steel wire according to claim 2; and

rubber.

11. A rubber composite comprising:

the steel cord according to claim 5; and

rubber.

12. A rubber composite comprising:

the plated steel wire according to the steel cord according to claim 9; and

rubber.