CN1311835A - Single wire steel cord and method of producing same - Google Patents
Single wire steel cord and method of producing same Download PDFInfo
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- CN1311835A CN1311835A CN99809136A CN99809136A CN1311835A CN 1311835 A CN1311835 A CN 1311835A CN 99809136 A CN99809136 A CN 99809136A CN 99809136 A CN99809136 A CN 99809136A CN 1311835 A CN1311835 A CN 1311835A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 270
- 239000010959 steel Substances 0.000 title claims abstract description 270
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- 238000004519 manufacturing process Methods 0.000 claims description 24
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 230000009467 reduction Effects 0.000 abstract description 6
- 238000012360 testing method Methods 0.000 description 20
- 230000000052 comparative effect Effects 0.000 description 18
- 238000003490 calendering Methods 0.000 description 16
- 238000005491 wire drawing Methods 0.000 description 16
- 230000036651 mood Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
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- 238000010586 diagram Methods 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 2
- 238000003556 assay Methods 0.000 description 2
- RYGMFSIKBFXOCR-BJUDXGSMSA-N copper-63 Chemical compound [63Cu] RYGMFSIKBFXOCR-BJUDXGSMSA-N 0.000 description 2
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- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
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Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
- D07B1/0606—Reinforcing cords for rubber or plastic articles
- D07B1/0646—Reinforcing cords for rubber or plastic articles comprising longitudinally preformed wires
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/0064—Reinforcements comprising monofilaments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
- B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
- B60C9/2003—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel characterised by the materials of the belt cords
- B60C9/2006—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel characterised by the materials of the belt cords consisting of steel cord plies only
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
- D07B1/0606—Reinforcing cords for rubber or plastic articles
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B7/00—Details of, or auxiliary devices incorporated in, rope- or cable-making machines; Auxiliary apparatus associated with such machines
- D07B7/02—Machine details; Auxiliary devices
- D07B7/025—Preforming the wires or strands prior to closing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2705/00—Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
- B29K2705/08—Transition metals
- B29K2705/12—Iron
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2030/00—Pneumatic or solid tyres or parts thereof
- B29L2030/003—Plies; Breakers
- B29L2030/005—Belts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/731—Filamentary material, i.e. comprised of a single element, e.g. filaments, strands, threads, fibres
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/20—Rope or cable components
- D07B2201/2001—Wires or filaments
- D07B2201/2002—Wires or filaments characterised by their cross-sectional shape
- D07B2201/2005—Wires or filaments characterised by their cross-sectional shape oval
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/20—Rope or cable components
- D07B2201/2001—Wires or filaments
- D07B2201/2007—Wires or filaments characterised by their longitudinal shape
- D07B2201/2008—Wires or filaments characterised by their longitudinal shape wavy or undulated
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2501/00—Application field
- D07B2501/20—Application field related to ropes or cables
- D07B2501/2046—Tire cords
Abstract
A single wire steel cord has two flat surfaces opposed to each other and two round curved surfaces opposed to each other that are provided by flattening a round wire, wherein the flatness ratio D/W of the minor diameter D to the major diameter W is within the range of 0.50 - 0.95, and the steel cord is waved at least in the minor diameter direction and embedded in a tire belt with one flat surface directed to the ground-contacting tire surface. The single wire steel cord having high durability, arousing comfortable ride feeling, and realizing reduction of the weight of tires.
Description
Technical field
The present invention relates to the employed single wire steel cord of reinforcement and the manufacture method thereof of various vehicle tyres, relate in particular to the single wire steel cord and the manufacture method thereof of the tire belt portion that imbeds ( イ ヤ ベ Le ト portion) usefulness.
Background technology
Recently, prevent a link of greenhouse effects of the earth as propelling, the restriction of waste gas total amount is very strict, and is just accelerating to improve the fuel consumption of automobile, and from the light-weighted purpose of tire, the desire that just prevailing is done thin way with the wall thickness of rubber part.Therefore, for the steel wire rope of exploitation as the tire reinforcement material, motor-dom has been expressed bigger expectation.From improving the viewpoint of earth environment from now on, the task of top priority is to make tire thin-wall light-weighted again, and the tyre performance of exploitation when paying attention to running car, especially improves the single wire steel cord of cornering ability and riding comfort.
Car is located at wheel tread (ト レ with the belt layer of radial tyre
ッDe) and between the carcass (カ-カ ス),, has the function that resembles fastening firmly carcass the hoop and improve the wheel tread rigidity as the belt of along the circumferential direction hanging up.The function of this belt layer is absolutely necessary for tire supporting car weight, and has the effect of performance cornering ability.
For the tire belt layer, generally use with many steel wires the steel wire rope of the 1 * n structure after stranded.Though so the steel wire rope of twisted wire structure has higher rigidity, its opposing face because of being that the rebound power of tire on the concavo-convex non-asphalt road is too strong on the road surface, is taken the mood variation and make.In addition, because of on the wheel tread surface, being easy to generate be full of cracks, and make rainwater etc. enter inside tires, and make steel wire rope corrode in early days from be full of cracks.In addition, in case tire produces distortion or vibration, the steel wire after stranded produces the so-called fretting wear of wearing and tearing with regard to mutual friction, make steel wire rope produce the significantly tired problem that worsens thereby have.
For addressing these problems, proposed following a kind of scheme: the single wire steel cord that round wire is constituted is used for the tire belt layer, replaces the steel wire rope of twisted wire structure.Because single wire steel cord is compared the pliability excellence with the steel wire rope of twisted wire structure.
But (steel wire rope of 1 * n) structure exists following such problem for the single wire steel cord of existing round wire structure and twisted wire.
As the characteristic that is used for estimating the steel wire rope performance, can give an example out " decay " (キ Le) and " camber " 2 kinds." decay " is to be used for estimating one of the rope characteristic of rotating torques of self inherence of restricting." camber " is to be used for estimating one of linear rope characteristic of steel wire rope.If decay has error or skew, perhaps camber is too big, then be (on thin sheet rubber, to lay steel wire rope side by side because of calendering procedure in tire production, cover 1 thin sheet rubber more thereon, between sheet rubber, sandwich the operation of steel wire rope) in, the cause of unfavorable conditions such as reversing or to heave produced on the calendered sheet.
But, (in 1 * n) steel wire rope or the single line round wire rope, because the mechanical reason of the material of steel wire and wire drawing machine or wire twisting machine etc., be easy to generate the change of decay or camber in existing twisted wire structure.Especially because the decay change bigger, so even general quality assurance level also every product is checked at present.
(1) decay
The performance of the steel wire rope that uses as tire, the rotating torques of steel wire rope, i.e. the restrict evaluation of rotating torques (decay) of self inherence are even more important.Below, with reference to Fig. 1 decay is described.
The assay method of decay is, steel wire rope terminal part 2c on the spool 1 after product finished is converted into L word shape, under the state that is fixed on the fixture (not shown), as shown in Figure 1, from spool 1 only draw length be L1 (=6m), then, unreeve terminal part 2c from the fixture counts the rotation number of steel wire rope 2.Under the stranded situation of common S shape, will equidirectional with direction of lay (clockwise direction) occasion of rotation establish and do plus sige decay (+), will establish with the occasion of direction of lay opposite direction (counterclockwise) rotation and do minus sign decay (-).Generally, if decay is to change just good with interior rotation number 2, this steel wire rope be we can say no problem in practicality.
(2) camber
As the performance of the employed steel wire rope of tire belt portion, the linear evaluation (camber) that is in the steel wire rope of unconfinement state is important.Below, open arc height in conjunction with Fig. 2.
Make cut into length L 2 shown in Fig. 2 (a) (two ends of=400mm) steel wire rope 2 as Fig. 2 (b) with dull and stereotyped 3 state of contact under, steel wire rope 2 formed crown height AH are exactly camber.Usually, if camber AH is with interior just good at 30mm.This steel wire rope be we can say no problem in practicality.
(3) cornering ability and riding comfort
As one of desired performance of steel wire radial tyre, it is good to have when running at high speed steering wheel rotate for example, that is, bigger for avoiding dangerous cornering ability.In addition, though prior art is to use the higher steel wire rope of rigidity, concavo-convex for non-asphalt surface is because tire bears up-down vibration completely, so take the mood deterioration.So, for the desired from now on performance of the steel cable for strengthening of tire belt layer, be to take good these two kinds of mood towards the endurance of transverse direction and when travelling when turning.Having both this performance of two kinds, is important for from now on steel wire rope.
(4) thin-walled property of rubber for tire
Recently, automobile has the tendency that prevents the low fuel consumption vehicle of design of greenhouse effects of the earth countermeasure towards attention, thereupon, also requires lightweight for tire.But in existing twisted wire structure steel wire rope or single line round wire rope, the improvement of the rubber thin-walled property of tire has boundary.
Disclosure of an invention
The objective of the invention is, a kind of single wire steel cord and manufacture method thereof are provided, it can make, and cornering ability increases, riding comfort is excellent and can realize the rubber for tire thin-walled property.
Improve the endurance towards transverse direction when turning, it is important using the higher steel wire rope of rigidity (in-plane bending rigidity) E1 of transverse direction.In addition, make that to take mood good, use vertical rigidity (out-of-plane bending rigidity) E2 to have the steel wire rope of suitable intensity, with flexibly bear tyre contact patch concavo-convex, to alleviate the groggy deterioration of taking mood that the occupant felt be effective.
For the steel wire rope that makes belt portion has both higher endurance and pliability, (it is important that E1＞E2), rigidity have directionality to in-plane bending rigidity E1 greater than out-of-plane bending rigidity E2.
But, under the situation of existing twisted wire structure steel wire rope and single line round wire rope, even implement band two-dimensional shapes (gear is curled) (キ ヤ Network リ ソ プ) or band 3D shape spirality, the rigidity E1 of transverse direction and also do not have difference longitudinally between the rigidity E2 substantially.Therefore, can not satisfy simultaneously when turning towards the endurance of transverse direction and two kinds of performances of riding comfort longitudinally.That is,, then take mood and worsen, and take the mood aspect, then can not obtain the relation of this antinomy of endurance as if focusing on if focus on the endurance aspect.
Yet, following a kind of scheme has been proposed: with Japanese patent of invention open nineteen ninety-five single wire steel cord that No. 1915 communique disclosed be used for the belt layer of tire, the single wire steel cord that replaces the round wire rope to constitute.This single wire steel cord be with the steel wire flattening, use for example Japanese patent of invention disclose 1998 No. 25680 device that communique disclosed carries out two-dimentional ripple and processes, because with the compactness excellence of rubber, the height of anti-the flexural rigidity, so, just can obtain excellent control stability if use it for the belt portion of car with tire.But this single wire steel cord is unfavorable for the thin-walled property of rubber for tire, and it is also may not be talkative good to take mood.
Therefore, inventors, tire is thin-wall light-weighted has done research with keen determination with the raising performance in order to make, and the result finishes the present invention as described below.
Single wire steel cord of the present invention, have relative by the flattening of round wire 2 flat horizontal surfaces and 2 relative round surfaces, be characterized in, the aspect ratio D/W of its minor axis D and major diameter W is located in 0.5～0.95 the scope, and have ripple in the minor axis direction at least, flat horizontal surface towards the tyre contact patch side imbed in the tire belt portion and use.
The manufacture method of single wire steel cord of the present invention, be a flat horizontal surface towards the tyre contact patch side imbed the manufacture method of the single wire steel cord that uses in the tire belt portion, be characterized in having following operation: (a) be in 0.5～0.95 scope operation with the round wire flattening for the aspect ratio D/W that makes minor axis D and major diameter W; (b) in described operation (a), carried out the operation that ripple is processed by the minor axis direction of the flat steel wire of flattening.
In addition, in described operation (a) before, preferably have with described minor axis ripple manufacturing procedure (b) in the ripple direction direction of the quadrature major diameter ripple manufacturing procedure of round wire being carried out ripple processing mutually.In this occasion, be preferably in the described operation (a) in 0.80～0.95 the scope that aspect ratio D/W is located at.
Only the minor axis direction with the single wire steel cord (steel wire rope of pattern 1) of curling ripple processing in, preferably aspect ratio D1/W1 is located in 0.50～0.95 the scope.
The higher limit of aspect ratio D1/W1 being set as 0.95 reason is: when aspect ratio surpasses 0.95, steel wire is near positive bowlder, through the reduction DeGrain of the decay (rotating torques) of calendering, and the rigidity of major diameter direction and minor axis direction does not produce difference.
On the other hand, the lower limit of aspect ratio D1/W1 being set as 0.50 reason is: because the steel wire of using as steel wire rope using 0.82% high carbon steel implements to have 300kgf/mm in the steel wire after the wire drawing
2About advantages of higher tensile strength, so when the calendering of the high flat ratio that is lower than aspect ratio 0.50, on the steel wire after the calendering, crack sometimes.
The maximum of the ripple height F1 of minor axis direction is preferably made 0.3mm.If surpass this numerical value ripple height F1 is gone overboard greatly, then rubber section becomes heavy wall, has broken away from the light-weighted purpose of tire.
On the other hand, the minimum of a value of the ripple height F1 of minor axis direction is preferably made 0.05mm.For making camber AH be reduced to 30mm with interior (it is qualified to judge), the minimum ripple that also needs the 0.05mm height.
In addition, ripple spacing P1 preferably is set as 2～20mm.Because in this scope be practical ripple spacing.
Here so-called " ripple " is meant the stress more than the elastic limit given steel wire and steel wire is formed two dimension or three dimensional shapes.
In addition, so-called here " curling ripple " is meant steel wire is formed in the plane more two-dimensional shape of identical ripple repeatedly.As this representative of curling ripple, there is the gear of between 1 pair of gear, nipping steel wire and being shaped to curl ripple processing.In addition, curl that ripple comprises also from the side that spiral wire with 3D shape flattens and the processing of making two-dimensional shapes.
In addition, here so-called " circular arc ripple " is meant steel wire is formed on the representative as this circular arc ripple of the two-dimensional shapes that is only combined by the curve of smooth connection that do not comprise line part in 1 plane, the roller ripple processing of nipping steel wire and being shaped between 1 pair of roller is arranged.
In addition, because the steel wire rope (steel wire rope of pattern 1) of the ripple processing carried out of minor axis direction only, the setting regions of extending is lower, so in the time in this pattern 1, must carrying out the extension that overcover is not spaced, use the steel wire rope (steel wire rope of pattern 2) that has carried out ripple processing in the two higher directions of the setting regions of extending.
Aspect ratio the D2/W2 ((D2 of the steel wire rope of pattern 2; The minor axis of flat steel wire)/(W2; The major diameter of flat steel wire)) preferably be located at 0.80～0.95 scope.The higher limit of aspect ratio being set as 0.95 reason is: when aspect ratio surpasses 0.95, steel wire is near positive bowlder, through the reduction DeGrain of the decay (rotating torques) of calendering, and the rigidity of major diameter direction and minor axis direction does not produce difference.In addition, the lower limit of aspect ratio being set as 0.8 reason is: curl 3 processing that processing, driving rolls calendering processing and minor axis direction are curled processing owing to implement the major diameter direction after wire drawing in the steel wire rope of pattern 2, so can prevent because of rolling the intensity decreases that damage caused that gives steel wire in processing.
In the steel wire rope of pattern 2, preferably the maximum of curling ripple height F3 of minor axis direction is set as 0.3mm, with the scope that ripple height F2 is set as 0.05～0.5mm of curling of major diameter direction.The reason that the maximum of the ripple working height F3 of minor axis direction is set as 0.3mm is: if the ripple height is gone overboard greatly, then rubber for tire becomes heavy wall, has broken away from light-weighted purpose.The reason that the maximum of the ripple working height F2 of major diameter direction is set as 0.5mm is: if do the ripple height also bigger than 0.5mm, then the extension of steel wire rope becomes bigger, and because of steel wire rope mutual make crest relative side by side with trough, gap between steel wire rope is irregular just obviously, is not best.In addition, the reason that the minimum of a value of the ripple working height F2 of major diameter direction is set as 0.05mm is: if do the ripple height also littler than 0.05mm, then camber AH just can not be reduced to 30mm with interior (it is qualified to judge).
Ripple spacing P2, P3, preferably major diameter direction and minor axis direction all are located at 2～20mm scope.Because in this scope be practical ripple spacing.But the preseting length of ripple spacing is: because the reason of the spacing inhomogeneities of major diameter direction and minor axis direction disappearance, so with respect to the gap length P3 of minor axis direction, set the gap length P2 of major diameter direction for positive several times.
In addition, for constituting steel wire, preferably using tensile strength is 300～380kgf/mm
2The high-tension steel wire of level.Its reason is: for obtaining the required breaking strength of single wire steel cord, the tensile strength of steel wire must be set as 280kgf/mm
2More than; On the other hand, the tensile strength when steel wire surpasses 400kgf/mm
2The time, steel wire becomes fragile and is easy to generate broken string.
In addition, for constituting steel wire, preferably using the carbon element amount is the high-tension steel wire of 0.75～0.95 weight %.Its reason is: for obtaining the required breaking strength of single wire steel cord, the carbon element amount of steel wire must be set as more than the 0.7 weight %; On the other hand, when the carbon element amount of steel wire surpassed 1.0 weight %, steel wire became fragile and is easy to generate broken string.
The simple declaration of accompanying drawing
Fig. 1 is the ideograph that is used for illustrating the decay of single wire steel cord;
Fig. 2 (a) is the figure of steel wire rope that expression cuts into specific length, (b) is the figure that is used for illustrating the camber assay method of steel wire rope;
Fig. 3 is the process chart of manufacture method of the single wire steel cord of expression the present invention the 1st example;
Fig. 4 (a) is the synoptic diagram of manufacturing streamline of the single wire steel cord of expression the 1st example, (b) is the general profile ideograph of the single wire steel cord in each operation, (c) is the sectional elevation of the single wire steel cord in each operation;
Fig. 5 is the front view of the major part of expression flattening device (driving rolls calender device);
Fig. 6 is the side view of the major part of expression flattening device (driving rolls calender device);
Fig. 7 is the front view of expression circular arc bellow means (roller processing unit (plant)) summary;
Fig. 8 is the side view of expression circular arc bellow means (roller processing unit (plant)) summary;
Fig. 9 is the partial enlarged drawing of expression circular arc bellow means (roller processing unit (plant)) major part;
Figure 10 (a) is the general profile ideograph that gear is curled ripple single wire steel cord (0.25HT), (b) be the general profile ideograph of circular arc ripple single wire steel cord (0.25HT), (c) be the general profile ideograph that gear is curled ripple single wire steel cord (0.30HT), (d) be the general profile ideograph of circular arc ripple single wire steel cord (0.30HT), (e) being the general profile ideograph that gear is curled ripple single wire steel cord (0.35HT), (f) is the general profile ideograph of circular arc ripple single wire steel cord (0.35HT).
Figure 11 (a) is the sectional elevation of the single wire steel cord (steel wire rope of pattern 1) of the 1st example, (b) being the general profile ideograph of the single wire steel cord (steel wire rope of pattern 1) of the 1st example, (c) is the cross-sectional ideograph of the steel wire radial tyre behind the single wire steel cord (steel wire rope of pattern 1) of imbedding the 1st example.
Figure 12 is the process chart of manufacture method of the single wire steel cord of expression the present invention the 2nd example;
Figure 13 (a) is the synoptic diagram of manufacturing streamline of the single wire steel cord of expression the 2nd example, (b) is the general profile ideograph of the single wire steel cord in each operation, (c) is the sectional elevation of the single wire steel cord in each operation;
Figure 14 (a) is the sectional elevation of the single wire steel cord (steel wire rope of pattern 2) of the 2nd example, (b) being the general profile ideograph of the single wire steel cord (steel wire rope of pattern 2) of the 2nd example, (c) is the cross-sectional ideograph of the steel wire radial tyre behind the single wire steel cord (steel wire rope of pattern 2) of imbedding the 2nd example;
Figure 15 (a) is the sectional elevation of the single wire steel cord of expression comparative example 1, (b) is the general profile ideograph of the single wire steel cord of expression comparative example 1;
Figure 16 (a) is the sectional elevation of the single wire steel cord of expression comparative example 2, (b) is the general profile ideograph of the single wire steel cord of expression comparative example 2;
Figure 17 is the sectional elevation of the single wire steel cord of each embodiment of expression and comparative example with explanation steel wire rope rigidity;
Figure 18 is the stereogram that expression is used for the test film of belt long duration test;
Figure 19 is the sectional elevation that is used for the test film of belt long duration test;
Figure 20 is the synoptic diagram of expression belt durability-testing machines;
The optimal morphology that carries out an invention
Below, various preferable example of the present invention is described in conjunction with the accompanying drawings.
Use the manufacture method shown in Fig. 3 and Fig. 4 (a) to come the single wire steel cord 2A of the pattern 1 shown in shop drawings 4 (b), (c) and Figure 11 (a) and (b), re-use this single wire steel cord 2A and make the steel wire radial tyre 10A shown in Figure 11 (c).In addition, use the manufacturing process shown in Figure 12 and Figure 13 (a) to make the single wire steel cord 2B of the pattern 2 shown in Figure 13 (b), (c) and Figure 14 (a) and (b), re-use this single wire steel cord 2B and make the steel wire radial tyre 10B shown in Figure 14 (c).
Describe in detail respectively below.
(embodiment 1 and embodiment 2; The steel wire rope of pattern 1)
With the carbon element amount is that the steel wire of 0.82 ± 0.02 weight % is that the blank silk is prepared (operation S1).In heating furnace with this blank silk after the heating of 950 ℃ temperature kept for 30 seconds, in the fluid bed furnace that uses sand, heat 550 ℃ temperature quench under the condition that kept for 8 seconds (operation S2), use electroplate liquid, component with copper 63 weight %, zinc 37 weight % is carried out brass plating (operation S3) to blank silk surface, carry out Wire Drawing with 5 pairs of metal plated steel wires of wire drawing machine, tensile strength is made 308～312kgf/mm
2The high-tension steel wire 2 (operation S4) of scope.The diameter of the steel wire 2 after the wire drawing is 0.40mm.In addition, the adhesion amount of the brass of every 1kg steel wire plating is about 4g.
Continuation is delivered to driving rolls calender device 7 with round wire steel wire 2, by 1 pair of calendar rollers 71,72 up and down the flat steel wire 2a (operation S5) of 0.3mm * 0.46mm (minor axis * major diameter) size is made in its flattening.
Now driving rolls calender device (flat processing machine) 7 is described in conjunction with Fig. 5 and Fig. 6.Flat processing machine 7 has 1 breaker roll roller 71,72 up and down.Upper roller 71 is connected with the driving shaft 73 that is driven by motor 78 rotations, and bottom roller 72 is connected with the driving shaft 74 that is driven by motor 79 rotations.On driving shaft 73,74, gear wheel 76 is installed, gear wheel 76 respectively with the rotating driveshaft that is installed in each motor 78,79 on pinion 77 engagement.Be formed with roll 71a, the 72a of regulation concavity respectively at the side face of each roller 71,72.Each roller shaft 73,74 connects by bearing 73a, 74a and is bearing on carriage 73b, the 74b.Bottom bracket 74b is fixed on the framework (not shown) of calender device, and bracket 73b is connected with bottom bracket 74b with adjusting screw 75.When rotating adjustment screw 75, bracket 73b and upper roller 71 1 liftings, the gap that upper roller 71 and bottom roller are 72 changes.In addition, for the roller gap guiding mechanism, also can use oil hydraulic cylinder mechanism to replace adjusting screw 75.
Now ripple processing machine 8 is described in conjunction with Fig. 7 and Fig. 8.In the housing 81 of ripple processing machine 8, accommodate a pair of big roller 82a, 82b up and down.Housing 81 has inlet guide way 85 and export orientation body 86.Steel wire 2 is imported in the housing 81 by inlet guide way 85, by between big roller 82a, 82b, sends from housing 81 by export orientation body 86 again.
As shown in Figure 9, equally spaced be provided with retainer 87a, 87b, on each retainer 87a, 87b, be separately installed with roller 83a, the 83b of minor diameter in the periphery of big roller 82a, 82b.Between adjacent roller 83a (83b) and roller 83a (83b), be mounted to and do not have the gap substantially.Upper roller 82a is connected with gear 84a is coaxial, and bottom roller 82b is connected with gear 84b is coaxial.Up and down gear 84a, 84b intermesh.Utilize two gear 84a, 84b and can not produce slip between bottom roller 82a, 82b, thereby bottom roller 82a, 82b are rotated synchronously.
In case steel wire 2 is nipped between big roller 82a, 82b, then be subjected to bending because of roller 83a, 83b up and down, shown in Figure 10 (b), (d), (f), be made into level and smooth continuous circular-arc ripple.In this case, the diameter D of roller 83a, 83b is necessary to do enough greatlyyer than steel wire diameter d.In addition, preferably the diameter D of roller 83a, 83b is made 5～50 times the scope of steel wire diameter d.
What in addition, also can use Japanese patent of invention to disclose 1998 No. 25680 gear that communique disclosed curled that processing machine replaces that 8 pairs of steel wires of above-mentioned circular arc ripple processing machine 2 carry out two dimension curls ripple processing.Thisly curl steel wire 2K outward appearance after processing machine is done ripple processing shown in Figure 10 (a), (c), (e) through gear.
Shown in table 1 and Figure 11 (a) and (b), the steel wire rope 2A of embodiment 1 and 2 (pattern 1) is respectively, the ripple height F1 of minor axis direction is 0.1mm, 0.1mm, minor axis D1 is 0.30mm, 0.36mm, major diameter W1 is 0.46mm, 0.44mm, aspect ratio D1/W1 is 0.65,0.82, and ripple spacing P1 is 6mm, 6mm.
In addition, steel wire rope 2A is wound on the cylinder of up-coiler 9, this cylinder is installed in the supply side place of severing streamline, utilize cutting machine (not shown) that steel wire rope 2A severing is become specific length (operation S7).The length of severing steel wire rope 2A is 200m.In addition, as shown in table 1, decaying to of steel wire rope 2A 0～0.75 changeed (average out to 0.5 changes), and camber AH is 10～28mm (average out to 15mm, 24mm).
The steel wire rope 2A of embodiment 1 and 2 (pattern 1), the rigidity index G2 of minor axis direction is 74,97, and the rigidity index G1 of major diameter direction is 149,114, and rigidity is 2.00,1.18 than G1/G2.In addition, " rigidity index " be, under the ratio when being in rigidity G3 with round wire as a reference value 100, respectively to 2 mensuration that direction is done shown in Figure 17.In addition, steel wire rope 2A anti-disconnected of having distinguished pattern 1 stretches and is in 2.5～3.5% the low area.
Severing steel wire rope 2A is carried out be laid in side by side abreast so-called calendering procedure (operation S8) on the raw rubber sheet of prescribed distance.In this calendering procedure S8, it is unilateral parallel with raw rubber that steel wire rope 2A is laid into a flat horizontal surface side by side.Because the camber AH of severing steel wire rope 2A is less, so lay severing steel wire rope 2A easily side by side.The intervals of laying side by side for example is 1.2mm.
The sheet rubber severing is become given size (operation S9).Make and imbed steel wire rope 2A and intersect with mutual predetermined angular and 2 severing sheet 12A, 14A are overlapped in the belt portion of rubber molding product of tire shape.The rubber component 16 that will have wheel tread 18 again is attached on the severing sheet 14A in the outside (the 2nd layer), and thus, steel wire rope 2A is embedded in (operation S10) in the rubber fully.Formed products after assembling like this is heated to set point of temperature, makes it integrated, obtain the tire product 10A (operation S11) shown in Figure 11 (c).
In this tire product 10A, the minor axis portion adjacent with belt layer 12A, 14A of steel wire rope 2A is configured to certain intervals, and at the direction of rotation of tire and to tilted direction and row arrangement.This structure can and improve endurance with horizontal rigidity E1 sclerosis, on the contrary, can soften longitudinally rigidity E2 and improves soft riding comfort.
The single wire steel cord and the manufacture method thereof of pattern 2 are described below in conjunction with Figure 12 and Figure 13 (a) and (b), (c).
(embodiment 3 and embodiment 4; The steel wire rope of pattern 2)
With the carbon element amount is that the steel wire of 0.82 ± 0.02 weight % is that the blank silk is prepared (operation S21).In heating furnace with this blank silk after the heating of 950 ℃ temperature kept for 30 seconds, in the fluid bed furnace that uses sand, heat 550 ℃ temperature quench under the condition that kept for 8 seconds (operation S22), use electroplate liquid, component with copper 63 weight %, zinc 37 weight % is carried out brass plating (operation S23) to blank silk surface, carry out Wire Drawing with 5 pairs of metal plated steel wires of wire drawing machine, tensile strength is made 308～312kgf/mm
2The high-tension steel wire 2 (operation S24) of scope.The diameter of the steel wire 2 after the wire drawing is 0.40mm.In addition, the adhesion amount of the brass of every 1kg steel wire plating is about 4g.
Continuation is delivered to ripple processing and 8 with steel wire 2, by roller 83a, 83b it is carried out ripple processing in the major diameter direction, makes the steel wire 2b1 (operation S25) that the circular arc ripple is arranged unidirectional.In addition, also can use Japanese patent of invention to disclose 1998 No. 25680 gear that communique disclosed is curled processing machine and is replaced above-mentioned circular arc ripple processing machine 8.
Continuation is delivered to flat processing machine 7 with steel wire 2b1, by 1 pair of calendar rollers 71,72 from up and down with its flattening, make the flat steel wire 2b2 (operation S26) of 0.36mm * 0.44mm (minor axis * major diameter) size.And at use Fig. 5 of flat processing machine 7 places and device shown in Figure 6.
Continuation is delivered to ripple processing machine 8 with flat steel wire 2b2, by 1 couple of roller 83a, 83b it is carried out ripple processing in the minor axis direction, obtains at the two-way flat rope 2B (operation S27) that the circular arc ripple is arranged.In addition, also can use Japanese patent of invention to disclose 1998 No. 25680 gear that communique disclosed is curled processing machine and is replaced above-mentioned circular arc ripple processing machine 8.
Shown in table 1 and Figure 14 (a) and (b), the steel wire rope 2B of embodiment 3 and 4 (pattern 2) is respectively, the ripple height F2 of major diameter direction is 0.1mm, 0.1mm, the ripple height F3 of minor axis direction is 0.1mm, 0.1mm, minor axis D2 is 0.36mm, 0.38mm, and major diameter W2 is 0.44mm, 0.43mm, and aspect ratio D2/W2 is 0.82,0.88, the ripple spacing P2 of major diameter direction is 6mm, 6mm, and the ripple spacing of minor axis direction is 3mm, 3mm.
In addition, steel wire rope 2B is wound on the cylinder of up-coiler 9, this cylinder is installed in the supply side place of severing streamline, utilize cutting machine (not shown) that steel wire rope 2B severing is become specific length (operation S28).The length of severing steel wire rope 2B is 200m.In addition, as shown in table 1, decaying to of steel wire rope 2B 0～0.75 changeed (average out to 0.5 changes), and camber AH is 8～20mm (average out to 12mm, 17mm).
The steel wire rope 2B of pattern 2, the rigidity index G2 of minor axis direction are 94,97, and the rigidity index G1 of major diameter direction is 111,109, and rigidity is 1.18,1.12 than G1/G2.In addition, " rigidity index " be, under the ratio when being in rigidity G3 with round wire as a reference value 100, respectively to 2 mensuration that direction is done shown in Figure 17.In addition, steel wire rope 2B anti-disconnected of having distinguished pattern 2 stretches and is in 3.0～5.0% the high zone.
Severing steel wire rope 2B is carried out be laid in side by side so-called calendering procedure (operation S29) on the raw rubber sheet of prescribed distance spaced and parallel ground.In this calendering procedure S29, it is unilateral parallel with raw rubber that steel wire rope 2B is laid into a flat horizontal surface side by side.Because the camber AH of severing steel wire rope 2B is less, so lay severing steel wire rope 2B easily side by side.The intervals of laying side by side for example is 1.2mm.
The sheet rubber severing is become given size (operation S30).Make and imbed steel wire rope 2B and intersect with mutual predetermined angular and 2 severing sheet 12B, 14B are overlapped in the belt portion of rubber molding product of tire shape.The rubber component 16 that will have wheel tread 18 again is attached on the severing sheet 14B in the outside (the 2nd layer), and thus, steel wire rope 2B is embedded in (operation S31) in the rubber fully.Formed products after assembling like this is heated to set point of temperature, makes it integrated, obtain the tire product 10B (operation S32) shown in Figure 14 (c).
Be applicable to the aspect ratio ((D2: be 0.80～0.95 minor axis of flat steel wire)/(W2: the major diameter of flat steel wire)) of the flat section of steel wire of pattern 2.
The higher limit of aspect ratio being set as 0.95 reason is: when aspect ratio surpasses 0.95, steel wire is near positive bowlder, through the reduction DeGrain of the decay (rotating torques) of calendering, and the rigidity of major diameter direction and minor axis direction does not produce difference.
In addition, 0.50 also high 0.80 the reason that the lower limit of aspect ratio is set as than pattern 1 is: curl processing+driving rolls calendering processing+minor axis direction and curl 3 times of processing and process because pattern 2 is implemented in major diameter direction after the wire drawing, so curl the processing number of times than pattern more than 11 times, thereby can realize preventing because of in calendering is processed, giving the purpose of the intensity decreases that damage caused of steel wire.
The ripple height of major diameter direction is located in the scope of 0.05～0.5mm.With the maximum of the ripple working height of major diameter direction be located at 0.5mm be because: if do the ripple height too big, then the extension of steel wire rope becomes undue big, and because of steel wire rope mutual make crest relative side by side with trough, the gap between steel wire rope is irregular just obviously, is not best.
With the maximum of the ripple working height of minor axis direction be set as 0.3mm be because: if the ripple height is gone overboard greatly, then rubber for tire becomes heavy wall, has broken away from light-weighted purpose.And with its minimum of a value be set as 0.05mm be because: if minimum degree is not made in the processing of the ripple of minor axis direction, camber AH just can not be reduced to 30mm with interior specification.
It is better that the steel wire rope of above-mentioned pattern 2, camber AH (linearity) are made 12mm, 17mm, and decay (rotating torques) has and makes 0.5 and change, promptly roughly approach zero good quality.
In addition, bury the tire of pattern 2 underground, can expect endurance and the effect equal, that is, take the good effect of mood by the horizontal endurance that hard rigidity produced with by soft rigidity produced longitudinally with pattern 1.
Below, the single wire steel cord of comparative example 1～3 is described in conjunction with Figure 15 (a) and (b) and Figure 16 (a) and (b).
(comparative example 1; The round wire two dimension is curled the ripple steel wire rope)
The single wire steel cord 2C that uses blank silk same as the previously described embodiments to make to curl ripple as the round wire two dimension in the cross section shown in Figure 15 (a) and (b) as a comparative example 1.As shown in table 1, the diameter D of the steel wire rope 2C of comparative example 1 is 0.40mm, and ripple spacing P is 6mm.In addition, the rigidity index G2 of minor axis direction is 100, and the rigidity index G1 of major diameter direction is 103, and rigidity is 1.03 than G1/G2.In addition, the camber AH of steel wire rope 2C (linearity) is 39mm, and decay (rotating torques) is 1.0 commentaries on classics.
(comparative example 2; Round wire three-dimensional spiral processing steel wire rope)
Use blank silk same as the previously described embodiments to make the cross section shown in Figure 16 (a) and (b) and be the single wire steel cord 2D of round wire three-dimensional spiral processing as a comparative example 2.As shown in table 1, the diameter D of the steel wire rope 2D of comparative example 2 is 0.40mm, and helix pitch P is 6mm.In addition, the rigidity index G2 of minor axis direction is 100, and the rigidity index G1 of major diameter direction is 100, and rigidity is 1.00 in addition than G1/G2, and the camber AH of steel wire rope 2D (linearity) is 18mm, and decay (rotating torques) is 0.5 to change.
(comparative example 3; The round wire steel wire rope)
Use blank silk same as the previously described embodiments to make cross section shown in Figure 17 and be single wire steel cord 2 that round wire constituted as a comparative example 3.As shown in table 1, the diameter D of the steel wire rope 2 of comparative example 3 is 0.40mm.In addition, the rigidity index G2 of minor axis direction is 100, and the rigidity index G1 of major diameter direction is 100, and rigidity is 1.00 than G1/G2.In addition, the camber of round wire rope 2 (linearity) is 45mm, and decay (rotating torques) is 2.5 commentaries on classics.
Make each steel wire rope of above-mentioned pattern 1 and pattern 2 respectively, study each characteristic, the result can confirm to have the effect 1.～5. of following narration.
1. make the effect of decay (rotating torques of steel wire inherence) reduction because of flat processing
(a) decay is to be used for one of important performance that guarantees the steel wire rope quality.When directly making single wire steel cord with wire drawing machine, available wire drawing machine control decay is a particular importance.Usually, if the round wire after the wire drawing is measured decay, then be the revolution about 1～5 time.
Present inventors find by the round wire flattening being reduced to decay roughly near zero.By steel wire is carried out the calendering of driving rolls, and can stably make the single wire steel cord of the low water-mark that decays to 0～1 time, can be altered to sampling check (regularly managing) the exhaustive test of the decay implemented in the past.Thus, can make and check that frequency sharply reduces and reduce significantly operation, and than more can make the stable steel wire rope of decaying in the past.
(b) for flat steel wire, be found, the rigidity G1 of major diameter direction is the rigidity anisotropy also bigger than the rigidity G2 of minor axis direction.With the rigidity G3 of the rigidity G2 of the rigidity G1 of the major diameter direction of described flat steel wire and minor axis direction and existing round wire relatively, distinguished the relation of following formula (1):
G1＞G3＞G2????…(1)
Owing to make steel wire rope flat horizontal surface and tyre contact patch relatively dispose flat rope on the belt layer of tire, so compare with existing round wire, the horizontal rigidity E1 of tire is stronger.Thus, the cornering ability excellence, the E2 of rigidity longitudinally of tire diminishes, and because the flexibility of one piece tyre increases, also improves so take mood.
2. make the effect of camber AH (linearity of steel wire) reduction because of ripple processing
(a) it is bigger not make the camber AH of flat steel wire of ripple processing, as steel wire rope is inappropriate, but in the end in the operation, by on the minor axis direction of flat steel wire, carrying out ripple processing, thereby camber AH is significantly improved, camber AH can be reduced in the control range of general steel wire rope (≤30mm).
(b) by using the ripple processing of 2 kinds of patterns, can guarantee the necessary extension of steel wire rope
The steel wire rope 2A of pattern 1 does ripple processing in the minor axis direction, and anti-disconnected the stretching is in 2.5～3.5% low area.
The steel wire rope 2B of pattern 2 does ripple processing in major diameter direction and minor axis direction, and anti-disconnected the stretching is in 3.0～5.0% high zone.
3. thin-walled property
Be configured to make flat horizontal surface towards tyre contact patch by flat single wire steel cord, thereby the rubber wall thickness can be done to such an extent that also approach, can make the tire lightweight than single wire steel cord or 1 * n twisted wire steel wire rope that existing round wire constituted with ripple.
4. reduce cost
Not exclusively use wire twisting machine, and flat processing machine (driving rolls calender device) and ripple processing machine (roller processing unit (plant) or gear are curled processing unit (plant)) are set at wire drawing machine place as the preceding working procedure of twisted wire operation, process by the steel wire after the wire drawing being implemented continuously flattening calendering and ripple, thereby can make flat single wire steel cord.Thus, except having save stranded operation, the process velocity of wire drawing machine is than the high approximately 3 times high speed of occasion of the single wire steel cord that uses existing wire twisting machine, can reduce cost significantly and economically.
5. the evaluation of fatigue durability
The fatigue durability of each single wire steel cord is estimated with belt durability-testing machines 60 shown in Figure 20.As Figure 18 and shown in Figure 19, test film 90 have with 5 single wire steel cords 2 (2A, 2B, 2C, 2D) equidistantly compartment of terrain, a row ground imbed rubber component 91 veutro the test portion layer and 5 twisted wire steel wire ropes, the 93 equidistant compartment of terrains, of 2+2 * 0.25 structure are imbedded with arranging rubber component 91 dorsal part by osteoplaque.By the way, the each several part size of test film 90 is, thickness T is 6mm, and width W is 12mm, and length L 4 is 400mm.Belt durability-testing machines 60 has the roller 61 that diameter is 20mm.Above-mentioned test portion layer be in veutro (inboard) and with test film 90 around hanging on this roller 61, counterweight 62 is installed respectively at its two ends, test film 90 bears the load of 60kgf.The stroke of test film 90 is made as 50mm,, it is repeated 2000 times with the circulation switching direction of per minute 60 times.
After the off-test, the soft X line of irradiation on the test portion layer of test film 90 is taken the X line and is seen through photo, observes this X line and sees through photo, and the fracture location number (NBR) of the steel wire rope (steel wire) of each test portion is counted.The test number is that 5 steel wire ropes are estimated with mean value as 1 group.
Table 1
| Sample number into spectrum | Manufacture method | Steel wire diameter | Aspect ratio D/W | Rigidity | Rigidity compares G1/G2 | Decay (inferior/6m) | Camber (mm) | |||
| D minor axis (mm) | W major diameter (mm) | G1 major diameter direction | G2 minor axis direction | |||||||
| ?1 | Embodiment 1 | Pattern 1 | ????0.30 | ????0.46 | ????0.65 | ????149 | ????74 | ???2.00 | ????0.5 | ????15 |
| ?2 | Embodiment 2 | Pattern 1 | ????0.36 | ????0.44 | ????0.82 | ????114 | ????97 | ???1.18 | ????0.5 | ????24 |
| ?3 | Embodiment 3 | Pattern 2 | ????0.36 | ????0.44 | ????0.82 | ????111 | ????94 | ???1.18 | ????0.5 | ????12 |
| ?4 | Embodiment 4 | Pattern 2 | ????0.38 | ????0.43 | ????0.88 | ????109 | ????97 | ???1.12 | ????0.5 | ????17 |
| ?5 | Comparative example 1 | The round wire two dimension is curled | ????0.40 | ????0.40 | ????1 | ????103 | ????100 | ???1.03 | ????1.0 | ????39 |
| ?6 | Comparative example 2 | The round wire three-dimensional spiral | ????0.40 | ????0.40 | ????1 | ????100 | ????100 | ???1.00 | ????0.5 | ????18 |
| ?7 | Comparative example 3 | Round wire | ????0.40 | ????0.40 | ????1 | ????100 | ????100 | ???1.00 | ????2.5 | ????45 |
Claims (20)
1. single wire steel cord, the single wire steel cord that system is made of 1 steel wire, have relative by the flattening of round wire 2 flat horizontal surfaces and 2 relative round surfaces, it is characterized in that, the aspect ratio D/W of its minor axis D and major diameter W is located in 0.5～0.95 the scope, and have ripple in the minor axis direction at least, flat horizontal surface towards the tyre contact patch side imbed in the tire belt portion and use.
2. single wire steel cord as claimed in claim 1 is characterized in that, described ripple be only the minor axis direction curl processing.
3. single wire steel cord as claimed in claim 2 is characterized in that, described ripple height of curling processing is located in the scope of 0.05～0.3mm.
4. single wire steel cord as claimed in claim 1 is characterized in that, described ripple is to be curled processing what minor axis direction and major diameter direction did respectively.
5. single wire steel cord as claimed in claim 4 is characterized in that, described ripple height of curling the minor axis direction of processing is located in the scope of 0.05～0.3mm, and the ripple height of major diameter direction is located in the scope of 0.05～0.5mm.
6. single wire steel cord as claimed in claim 4 is characterized in that, described aspect ratio D/W is located in 0.80～0.95 the scope.
7. single wire steel cord as claimed in claim 1 is characterized in that the intervals of described ripple is located in the scope of 2～20mm.
8. single wire steel cord as claimed in claim 1 is characterized in that, described ripple is the roller processing that only is made of level and smooth continuous curve part that does not comprise the linearity part in a plane.
9. single wire steel cord as claimed in claim 8, it is characterized in that, described ripple is to make the level and smooth continuous curve of selecting from the group that continuous arc constituted by the continuous arc of the continuous arc of the combination of circular arc, sine wave curve, cycloid (helical curve), cardiod (heart-shaped curve) and tractrix (stretched wire alignment curve) that combines more than 1 or 2.
10. single wire steel cord as claimed in claim 8 is characterized in that, described ripple is the roller processing of only minor axis.
11. single wire steel cord as claimed in claim 8 is characterized in that, the ripple height that described roller is processed is located in the scope of 0.05～0.3mm.
12. single wire steel cord as claimed in claim 8 is characterized in that, described ripple is the roller processing of being done in minor axis direction and major diameter direction respectively.
13. single wire steel cord as claimed in claim 12 is characterized in that, the ripple height of the minor axis direction of described roller processing is located in the scope of 0.05～0.3mm, and the ripple height of major diameter direction is located in the scope of 0.05～0.5mm.
14. single wire steel cord as claimed in claim 12 is characterized in that, described aspect ratio D/W is located in 0.80～0.95 the scope.
15. single wire steel cord as claimed in claim 1 is characterized in that, described round wire has 280～450kgf/mm
2The tensile strength of scope.
16. single wire steel cord as claimed in claim 1 is characterized in that, described round wire has the carbon element amount of 0.07～1.00 weight %.
17. the manufacture method of a single wire steel cord, be a flat horizontal surface towards the tyre contact patch side imbed the manufacture method of the single wire steel cord that uses in the tire belt portion, it is characterized in that having following operation: (a) be in 0.5～0.95 scope operation with the round wire flattening for the aspect ratio D/W that makes minor axis D and major diameter W; (b) in described operation (a), carried out the operation that ripple is processed by the minor axis direction of the flat steel wire of flattening.
18. the manufacture method of single wire steel cord as claimed in claim 17 is characterized in that, in the described operation (b), flat steel wire is carried out gear curl processing or roller processing.
19. the manufacture method of single wire steel cord as claimed in claim 17, it is characterized in that, in described operation (a) before, also have with described minor axis ripple manufacturing procedure (b) in the ripple direction direction of the quadrature major diameter ripple manufacturing procedure of round wire being carried out ripple processing mutually.
20. the manufacture method of single wire steel cord as claimed in claim 18 is characterized in that, in described operation (a), aspect ratio D/W is located in 0.80～0.95 the scope.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14323499A JP3802277B2 (en) | 1998-05-28 | 1999-05-24 | Single wire steel cord |
| JP143234/1999 | 1999-05-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1311835A true CN1311835A (en) | 2001-09-05 |
| CN1154764C CN1154764C (en) | 2004-06-23 |
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ID=15334030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB998091367A Expired - Fee Related CN1154764C (en) | 1999-05-24 | 1999-12-01 | Single wire steel cord and method of producing same |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR100415971B1 (en) |
| CN (1) | CN1154764C (en) |
| WO (1) | WO2000071809A1 (en) |
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| CN101186166B (en) * | 2006-11-23 | 2010-06-09 | 韩国轮胎株式会社 | Radial tire for truck and bus |
| CN102076512A (en) * | 2008-06-30 | 2011-05-25 | 米其林研究和技术股份有限公司 | Patching having discontinuous engagement to the tire |
| CN102292222A (en) * | 2009-01-28 | 2011-12-21 | 贝卡尔特公司 | Crimped flat wire as core of oval cord |
| US8784588B2 (en) | 2008-06-27 | 2014-07-22 | Michelin Recherche Et Technique S.A. | Damaged reinforcement ending preparation for tire repairs |
| CN107401074A (en) * | 2017-06-30 | 2017-11-28 | 南通博鳌纺织有限公司 | A kind of stainless steel carbon fiber single line |
| US10035313B2 (en) | 2007-11-29 | 2018-07-31 | Compagnie Generale Des Etablissements Michelin | Tire repair patch |
| WO2019079989A1 (en) * | 2017-10-23 | 2019-05-02 | 江苏兴达钢帘线股份有限公司 | Steel cord for reinforcing rubber product and rubber product thereof |
| CN109822008A (en) * | 2013-07-29 | 2019-05-31 | 贝卡尔特公司 | Straight monofilament on belt |
| CN113167025A (en) * | 2018-12-06 | 2021-07-23 | 栃木住友电工株式会社 | Steel wire and tire |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE60031806T2 (en) * | 1999-07-07 | 2007-09-20 | Sumitomo Rubber Industries Ltd., Kobe | tire |
| WO2022264489A1 (en) * | 2021-06-14 | 2022-12-22 | 住友電気工業株式会社 | Metal wire and rubber composite |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60110497U (en) * | 1983-12-27 | 1985-07-26 | 金井 宏之 | steel cord |
| JP2563933Y2 (en) * | 1990-11-30 | 1998-03-04 | 金井 宏之 | Tire reinforcement |
| JP2554200Y2 (en) * | 1991-11-27 | 1997-11-12 | 金井 宏之 | Tire reinforcement |
| JP3040889B2 (en) * | 1992-12-28 | 2000-05-15 | 東京製綱株式会社 | Belt reinforcement layer for vehicle tires |
| DE4409182A1 (en) * | 1994-03-17 | 1995-09-21 | Sp Reifenwerke Gmbh | Strength members for vehicle tires |
| JP3676038B2 (en) * | 1997-06-05 | 2005-07-27 | 不二精工株式会社 | Tire cord |
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1999
- 1999-12-01 KR KR10-2001-7000366A patent/KR100415971B1/en active IP Right Grant
- 1999-12-01 CN CNB998091367A patent/CN1154764C/en not_active Expired - Fee Related
- 1999-12-01 WO PCT/JP1999/006739 patent/WO2000071809A1/en active IP Right Grant
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101186166B (en) * | 2006-11-23 | 2010-06-09 | 韩国轮胎株式会社 | Radial tire for truck and bus |
| US10035313B2 (en) | 2007-11-29 | 2018-07-31 | Compagnie Generale Des Etablissements Michelin | Tire repair patch |
| US8784588B2 (en) | 2008-06-27 | 2014-07-22 | Michelin Recherche Et Technique S.A. | Damaged reinforcement ending preparation for tire repairs |
| CN102076512A (en) * | 2008-06-30 | 2011-05-25 | 米其林研究和技术股份有限公司 | Patching having discontinuous engagement to the tire |
| CN102292222A (en) * | 2009-01-28 | 2011-12-21 | 贝卡尔特公司 | Crimped flat wire as core of oval cord |
| CN109822008A (en) * | 2013-07-29 | 2019-05-31 | 贝卡尔特公司 | Straight monofilament on belt |
| CN107401074A (en) * | 2017-06-30 | 2017-11-28 | 南通博鳌纺织有限公司 | A kind of stainless steel carbon fiber single line |
| WO2019079989A1 (en) * | 2017-10-23 | 2019-05-02 | 江苏兴达钢帘线股份有限公司 | Steel cord for reinforcing rubber product and rubber product thereof |
| CN113167025A (en) * | 2018-12-06 | 2021-07-23 | 栃木住友电工株式会社 | Steel wire and tire |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2000071809A1 (en) | 2000-11-30 |
| CN1154764C (en) | 2004-06-23 |
| KR20010071812A (en) | 2001-07-31 |
| KR100415971B1 (en) | 2004-01-24 |
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