JP4520660B2 - Metal sheet and rubber product using flat wire - Google Patents

Description

【００２０】
【表２】

【００２１】
【発明の効果】
本発明を用いることで、ゴムなどの補強に使用できる鋼材の密度が上げられるのでゴム等の厚さを容易に薄くする事ができる。
【図面の簡単な説明】
【図１】本発明による扁平ワイヤを金属シートに織った場合の例を示す図である。[0001]
BACKGROUND OF THE INVENTION
The present invention is a steel cord, fishing line, cut wire, electric discharge machined wire, which is produced by processing a hot-rolled wire into a thinner wire diameter by wire drawing, and twisting a plurality of these . metal sheet produced using Hosuwai ya, and pressure hose, to rubber products such as such as tires.
[0002]
[Prior art]
Generally, high-carbon steel wires such as steel cords are subjected to final patenting treatment after primary wire drawing of a wire with a diameter of 4.0 to 6.0 mm that has been hot-rolled and adjusted and cooled as necessary. After that, it is manufactured by final wet wire drawing after brass plating. Many of such ultra fine steel wires are used as steel cords in a state in which stranded wire processing such as two strands and five strands is performed. In these steel cords,
1) higher strength,
2) Excellent high-speed wire drawing,
3) Excellent fatigue characteristics,
4) Excellent high-speed stranded wire property,
It must have the following characteristics. For this reason, high-quality steel materials having the above-described characteristics have been developed.
[0003]
For example, in Japanese Patent Application Laid-Open No. 60-204865, the Mn content is restricted to less than 0.3% to suppress the occurrence of supercooled structure after lead patenting, and the amount of elements such as C, Si, Mn is regulated. By doing so, a high-strength and high ductility ultrafine wire and a high carbon steel wire for steel cord with less breakage at the time of stranded wire are disclosed, and JP-A 63-24046 discloses Si content. A high toughness and highly ductile wire for a fine wire in which the tensile strength of the lead patenting material is increased to reduce the wire drawing rate by setting the content to 1.00% or more is disclosed.
[0004]
However, with the development of higher strength and high strength steel wire, a steel reinforcement method that can reduce the weight is desired.
[0005]
[Problems to be solved by the invention]
An object of the present invention, a steel cord, in the high strength steel wire 0.15~0.35mm used like a hose wire, further processed flat wire ya more wire drawing is performed at high speed yet textile processing metal sheets, also certain metals sheets to provide a rubber product embedded in rubber.
[0006]
[Means for Solving the Problems]
The present invention has been presented in order to solve the above problems, and the gist thereof is as follows.
(1) By mass%, C: 0.6 to 1.3%, Si: 0.1 to 1.0%, Mn: 0.1 to 1.0%, P: ≤ 0.02%, S: ≦ 0.02% of steel , the balance being Fe and inevitable impurities , having a tensile strength of 3.0 GPa or more, a drawing: 30% or more, and a cross-sectional shape having a width W A metal sheet characterized in that a flat wire characterized by having W / t ≧ 2 when the thickness is t is formed into a sheet shape by weaving .
[0007]
(2) The metal sheet according to (1), wherein the flat wire is manufactured by flat pressure processing so that W / t ≧ 2 when the width W and the thickness t are satisfied .
[0008]
( 3 ) The metal sheet according to the above (1) or (2) , wherein the flat wire is steel containing, in mass%, Cr: 0.05 to 2.0% .
[0009]
(4 ) A metal sheet, wherein a gap is provided between the flat wires constituting the metal sheet according to any one of (1) to (3) .
[0010]
( 5 ) A rubber product, wherein the metal sheet according to any one of ( 1) to (4) is used for rubber reinforcement.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
First, the reason for limiting the steel composition will be described. All components are in weight percent.
C is an element effective for strengthening, and in order to obtain a high-strength steel wire, the C content needs to be 0.6% or more. However, if it is too high, proeutectoid cementite is likely to be precipitated. The upper limit is set to 1.3% because the wire drawability deteriorates.
[0012]
Si is an element necessary for deoxidation of steel. Therefore, when its content is too small, the deoxidation effect becomes insufficient, so 0.1% or more is added. Si is dissolved in the ferrite phase in the pearlite formed after the heat treatment to increase the strength after patenting.
Mn is added in an amount of 0.1% or more in order to ensure the hardenability of the steel. However, the addition of a large amount of Mn makes the transformation time during patenting too long, so it is made 2.0% or less.
[0013]
Cr is added to increase the strength of the steel. When added, 0.05% or more where the effect is exerted is added to 1.5% or less without causing ductility of the steel wire.
The content of S for as with conventional ultrafine steel wire to secure the ductility and 0.02% or less, P be you content thereof more than 0.02% since impair the ductility of the S as well as the wire.
[0014]
The following elements, Ni, V, Nb, Mo, Cu, Al, Ti, B, Ca, Mg, REM, etc. can be added as required.
Next, the definition of the shape of the flat wire will be described. Conventional steel cords used to reinforce rubber are used to reinforce hose wires by twisting round wires, bundling round wires, or weaving them. There are methods such as increasing the strength of the reinforcing steel cord to make the reinforcing rubber lighter and thinner, but a certain thickness is required as long as it is a round wire.
[0015]
Therefore, the present inventors have devised that the wire is subjected to flat pressure processing with W / t being 2 when the width is W and the thickness is t. The flat-pressed wire is easy to weave because it does not twist when the wire is woven, and W / t is set to 2 or more in order to secure the area of the reinforcing wire per unit cross-sectional area.
Further, even when this rubber sheet is used for a tire or the like, a lighter tire can be manufactured at a low cost because the thickness of the sheet is thin and uniform. When weaving, the sheet can be made thin, which is convenient for making a lighter pressure-resistant hose and the like.
[0016]
Even when weaving, the area of the reinforcing wire per unit cross-sectional area can be adjusted by adjusting the interval between the flat wires.
Thus, the flat wire of this invention can be utilized for rubber products, such as various pressure | voltage resistant hoses, a conveyor belt, and a timing belt.
[0017]
【Example】
Hereinafter, the present invention will be described in detail based on examples. Table 1 shows the chemical composition of the test steel used in the trial production. The steel shown in Table 1 was melted and cast by continuous casting, and then billeted by hot rolling. The billet was reheated, and then a wire rod having a diameter of 5.5 mm was formed by wire rolling, and a steer moaning treatment was performed. The wire was pickled and then subjected to brass plating. Thereafter, wire drawing from 5.5 mm to 3.0 mm was performed. Thereafter, a to c shown in Table 2 were subjected to flat pressure processing by drawing to a wire diameter of 2 mm to obtain a flat pressure wire having a width of about 2 mm and a thickness of 0.1 mm. In addition, d to f were flattened wires having a width of 0.6 mm and a thickness of 0.3 mm by flattening after a wire diameter of 0.6 mm was obtained by drawing.
[0018]
Table 2 shows the values of tensile strength, drawing and elongation of these wires.
As a comparison method, a steel wire having the same strength as a round wire was manufactured. The comparative method g was a wire having the same strength as the inventive methods a to c and having the same cross-sectional area. The comparison method h was a wire with the same cross-sectional area having the same strength as the methods d to f of the present invention.
As shown in Table 2, it can be seen that the method of the present invention has half the thickness of the steel compared to the comparative method, so that the thickness of rubber or the like can be reduced.
[0019]
[Table 1]

[0020]
[Table 2]

[0021]
【The invention's effect】
By using the present invention, the density of a steel material that can be used for reinforcement of rubber or the like can be increased, so that the thickness of rubber or the like can be easily reduced.
[Brief description of the drawings]
FIG. 1 is a view showing an example in which a flat wire according to the present invention is woven into a metal sheet.

Claims (5)

In mass%, C: 0.6 to 1.3%, Si: 0.1 to 1.0%, Mn: 0.1 to 1.0%, P: ≦ 0.02%, S: ≦ 0. The steel is composed of 02% and the balance is Fe and inevitable impurities, and has a tensile strength of 3.0 GPa or more, a drawing: 30% or more, and a cross-sectional shape having a width W and a thickness t. A metal sheet characterized in that a flat wire characterized by having W / t ≧ 2 is formed into a sheet shape by weaving . The metal sheet according to claim 1, wherein the flat wire is manufactured by flat pressure processing so that W / t ≧ 2 when the width W and the thickness t are set. The flat wire is, by mass%, further, Cr: metal sheet according to claim 1 or 2, characterized in that a steel containing 0.05 to 2.0%. The metal sheet characterized by providing the clearance between flat wires which comprise the metal sheet in any one of Claims 1-3 . A rubber product, wherein the metal sheet according to any one of claims 1 to 4 is used for rubber reinforcement.

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