CN114811207A - Method for determining specification of metal wire for hose and hose - Google Patents
Method for determining specification of metal wire for hose and hose Download PDFInfo
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- CN114811207A CN114811207A CN202210054779.XA CN202210054779A CN114811207A CN 114811207 A CN114811207 A CN 114811207A CN 202210054779 A CN202210054779 A CN 202210054779A CN 114811207 A CN114811207 A CN 114811207A
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- hose
- wire
- ratio
- surface layer
- metal wire
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- 239000002184 metal Substances 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000010410 layer Substances 0.000 claims abstract description 49
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 31
- 239000002344 surface layer Substances 0.000 claims abstract description 31
- 238000012360 testing method Methods 0.000 claims abstract description 20
- 230000002787 reinforcement Effects 0.000 abstract description 5
- 229920001971 elastomer Polymers 0.000 description 13
- 239000005060 rubber Substances 0.000 description 13
- 239000011229 interlayer Substances 0.000 description 7
- 238000009940 knitting Methods 0.000 description 6
- 238000009864 tensile test Methods 0.000 description 6
- 229920000459 Nitrile rubber Polymers 0.000 description 4
- 238000009661 fatigue test Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 229920003048 styrene butadiene rubber Polymers 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 229920005549 butyl rubber Polymers 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229920001084 poly(chloroprene) Polymers 0.000 description 2
- 239000004709 Chlorinated polyethylene Substances 0.000 description 1
- 229920002943 EPDM rubber Polymers 0.000 description 1
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229920000571 Nylon 11 Polymers 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- UFRKOOWSQGXVKV-UHFFFAOYSA-N ethene;ethenol Chemical compound C=C.OC=C UFRKOOWSQGXVKV-UHFFFAOYSA-N 0.000 description 1
- 229920006229 ethylene acrylic elastomer Polymers 0.000 description 1
- 239000004715 ethylene vinyl alcohol Substances 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
- F16L11/08—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
- F16L11/08—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall
- F16L11/081—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall comprising one or more layers of a helically wound cord or wire
- F16L11/083—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall comprising one or more layers of a helically wound cord or wire three or more layers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
- F16L11/12—Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention provides a method for determining specification of metal wire for hose capable of simply selecting metal wire with proper specification for effectively improving pressure resistance and durability of hose and hose with reinforcing layer composed of metal wire with proper specification. Based on the ratio (Ta/Tx) of 0.2% yield strength (Ta) to maximum tensile stress (Tx) of a wire (4) forming a reinforcement layer (3) of a spiral structure interposed between an inner surface layer (2) and an outer surface layer (5) of a hose (1) and the results of a pressure resistance durability test in which internal pressure is repeatedly applied to the hose (1) under the condition of a predetermined internal pressure, an appropriate range (R) of the ratio (Ta/Tx) in which the results of the pressure resistance durability test satisfy a predetermined target value is determined, and a wire (4) having the specification of the ratio (Ta/Tx) of 0.85 to 0.99 which is the determined appropriate range (R) is selected as a member forming the reinforcement layer (3) of the hose (1).
Description
Technical Field
The present invention relates to a method for determining the specification of a wire for a hose and a hose, and more particularly, to a method for determining the specification of a wire for a hose capable of easily selecting a wire of an appropriate specification for more effectively improving the pressure durability of the hose, and a hose including a reinforcing layer formed of a wire of an appropriate specification.
Background
In hydraulic hoses, vehicle air-conditioning hoses, and the like, a reinforcing layer having a spiral structure formed by, for example, spirally winding a metal wire is interposed between an inner surface layer and an outer surface layer in order to withstand high internal pressure. In order to evaluate the pressure durability of the hose, a pressure durability test (pulse test) in which a predetermined internal pressure is repeatedly applied to the hose is performed (see, for example, paragraphs 0022 to 0026 of patent document 1).
On the other hand, the metal wires forming the reinforcing layer were subjected to a fatigue test to grasp the degree of tensile durability of the metal wire alone. Further, for example, a wire having sufficient tensile durability is selected by assuming a tensile force acting on the wire under the use conditions of the hose. Then, a pulse test was performed on the hose provided with the reinforcing layer formed of the selected metal wire to confirm whether or not the hose has the targeted pressure resistance durability. Since fatigue testing of the wire alone requires a considerable amount of time and labor, there is room for improvement in simply selecting a wire of an appropriate specification that can effectively improve the pressure resistance and durability of the hose.
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open publication No. 2004-060747
Disclosure of Invention
Problems to be solved by the invention
The purpose of the present invention is to provide a method for determining the specification of a wire for a hose, which can easily select a wire of an appropriate specification for more effectively improving the pressure resistance and durability of the hose, and a hose provided with a reinforcing layer formed of a wire of an appropriate specification.
Means for solving the problems
In order to achieve the above object, a method of determining a specification of a wire for a hose according to the present invention is a method of determining a specification of a wire forming a reinforcement layer having a spiral structure interposed between an inner surface layer and an outer surface layer of a hose, wherein an appropriate range of a ratio at which a result of a pressure resistance durability test satisfies a predetermined target value is determined based on a ratio of 0.2% yield strength of the wire to a maximum tensile stress and a result of a pressure resistance durability test in which an internal pressure is repeatedly applied to the hose under a condition of a predetermined internal pressure, and the wire having the specification of the ratio in the determined appropriate range is selected as a member forming the reinforcement layer of the hose.
The hose of the present invention is characterized in that, in a hose including an inner surface layer and an outer surface layer which are coaxially laminated, and a reinforcement layer having a spiral structure which is interposed between the inner surface layer and the outer surface layer and is formed of a metal wire, a ratio of 0.2% proof stress to maximum tensile stress of the metal wire is 0.85 or more and 0.99 or less.
Effects of the invention
According to the specification determining method of the wire for the hose of the present invention, the ratio of the 0.2% yield strength to the maximum tensile stress of the wire is used. Since this ratio is closely related to the degree of pressure durability of the hose, an appropriate gauge of wire for more effectively improving the pressure durability of the hose can be selected based on this ratio. Further, since this ratio can be obtained by performing a tensile test of the individual wires, a fatigue test of the individual wires is not necessary, and a wire of an appropriate specification can be easily selected.
According to the hose of the present invention, the reinforcing layer is formed by the wire of the specification having the ratio of 0.85 or more and 0.99 or less, and therefore, the pressure resistance durability of the hose can be improved more effectively.
Drawings
Fig. 1 is an explanatory view illustrating an embodiment of the hose of the present invention partially cut away.
Fig. 2 is an explanatory view illustrating the hose of fig. 1 in a cross-sectional view.
Fig. 3 is a graph illustrating a relationship between tensile stress and tensile strain of the metal wire of fig. 1.
Fig. 4 is a graph schematically illustrating a relationship between a ratio of 0.2% yield strength to maximum tensile stress of a metal wire and a result of a pressure durability test of a hose.
Fig. 5 is a graph showing the relationship illustrated in fig. 4 as an actual measurement value.
Description of the reference numerals
1: flexible pipe
2: inner surface layer
3(3a, 3b, 3c, 3 d): reinforcing layer
4: metal wire
5: outer surface layer
6: interlayer rubber layer
CL: flexible pipe axle center
Detailed Description
Hereinafter, a method for determining the specification of a wire for a hose and a hose according to the present invention will be described based on embodiments shown in the drawings.
The embodiment of the hose 1 of the present invention illustrated in fig. 1 and 2 is used as a so-called hydraulic hose or an air conditioning hose for circulating a refrigerant of an air conditioner for a vehicle. The hose 1 is a high-pressure hose having a hose use pressure of, for example, 15MPa to 50 MPa. The outer diameter of the hose is, for example, 20mm to 75mm, and the inner diameter of the hose is, for example, 10mm to 55 mm.
The hose 1 has an inner surface layer 2, a reinforcing layer 3(3a, 3b, 3c, 3d), and an outer surface layer 5 coaxially stacked in this order from the inner peripheral side. The interlayer rubber layer 6 is interposed between the reinforcing layers 3 laminated adjacent to each other in the radial direction of the hose 1. The single-dot chain line CL of the drawing indicates the hose axis.
The inner surface layer 2 and the outer surface layer 5 are formed of resin or rubber. The inner surface layer 2 and the outer surface layer 5 may have a multilayer structure of resin and rubber, or may be formed of only resin. For example, the inner surface layer 2 may have a multilayer structure in which a rubber layer is laminated on the outer peripheral surface of a resin layer. The inner surface layer 2 and the outer surface layer 5 are formed by selecting appropriate materials and setting appropriate layer thicknesses according to the performance required of the hose 1. The material used is not particularly limited, and examples of the inner surface layer 2 include butyl rubber, nitrile rubber, fluororubber, chlorinated polyethylene, nylon 11, nylon 6-66, and EVOH. For the outer surface layer 5, for example, EPDM, silicone rubber, natural rubber, butyl rubber, ethylene acrylic rubber, or the like is used.
The layer thickness of the interlayer rubber layer 6 varies depending on the outer diameter of the hose, and is, for example, 0.1mm to 0.5 mm. The interlayer rubber layer 6 joins and integrates the reinforcing layers 3 stacked adjacent to each other in the radial direction, and functions as a cushion material for the reinforcing layers 3 and also functions as a barrier for preventing permeation of gas, moisture, and the like. Examples of the rubber type of the interlayer rubber layer 6 include acrylonitrile-butadiene rubber, styrene-butadiene rubber, chloroprene rubber, and a mixed rubber thereof.
In this embodiment, the hose 1 is provided with 4 reinforcing layers 3. The reinforcing layer 3 has a spiral structure in which the metal wires 4 are spirally wound at a predetermined braiding angle a (a1, a2, A3, a4) with respect to the hose axis CL. Specifically, the knitting angle a1 is set in the innermost reinforcing layer 3a, and the knitting angles a2, A3, a4 are set in the outer reinforcing layers 3b, 3c, 3 d. The reinforcing layers 3 arranged adjacent to each other in the radial direction have wires 4 wound in opposite directions.
The knitting angles a1 to a4 are set to 52 ° or more and 57 ° or less. In this embodiment, the knitting angles a1 to a4 are substantially the same, but the knitting angle a may be larger or smaller as the reinforcing layer 3 on the outer circumferential side is closer.
The number of laminations of the reinforcing layer 3 is, for example, 2 to 8, and a desired number of laminations is used. The respective reinforcing layers 3 are formed of metal wires 4 of the same specification, and in this embodiment, all the reinforcing layers 3 are substantially of the same specification.
The metal wire 4 is formed by twisting a plurality of metal wires. As the metal wire 4, various steel wires used as members forming a reinforcing layer of a general rubber hose are used. The wire diameter of the metal wire 4 is, for example, 0.20mm or more and 1.00mm or less.
The ratio Ta/Tx of the 0.2% yield strength Ta of the metal wire 4 to the maximum tensile stress Tx is 0.85 or more and 0.99 or less. The ratio Ta/Tx is more preferably 0.90 or more and 0.94 or less.
The maximum tensile stress Tx is the so-called tensile strength of the wire 4, and the maximum tensile stress Tx and the 0.2% yield strength Ta are determined by the following method in accordance with JIS Z2241: 2011 a value obtained by a tensile test according to the metal material tensile test method. The maximum tensile stress Tx is grasped from the stress-strain curve D of the metal wire 4 illustrated in fig. 3. The tensile stress at the intersection of the curve D and the one-dot chain line L2 in which the elastic deformation region of the curve D (one-dot chain line L1 in fig. 3) is shifted by the amount of strain of 0.2% in the horizontal axis direction is grasped as the 0.2% yield strength Ta.
The specification of the wire 4 is determined by the specification determining method of the wire for hose of the present invention. An example of the procedure of the specification determining method will be described.
First, the tensile test described above is performed to obtain a stress-strain curve D for each specification of the candidate metal wire 4. By this tensile test, the maximum tensile stress Tx and 0.2% proof stress Ta of each wire 4 were obtained, and the ratio Ta/Tx was calculated.
Further, the hose 1 including the reinforcing layer 3 having a spiral structure formed by the respective metal wires 4 was manufactured, and a pressure resistance durability test in which a predetermined internal pressure was repeatedly applied to the respective hoses 1 was performed to grasp the result. The pressure resistance durability test was conducted by filling a liquid into the interior of the linearly extending hose 1, repeatedly applying an internal pressure at a predetermined frequency until the hose 1 was broken, and determining the number of times the internal pressure was applied until the hose was broken as a measurement result. For example, the hose 1 is filled with a working oil of about 100 ℃, and an internal pressure of 42MPa × 150% is applied by a trapezoidal wave having a frequency of 1.33 Hz.
The type and temperature of the liquid filled in the hose 1, the magnitude and frequency of the internal pressure applied to the hose 1, and the type of the waveform thereof (trapezoidal wave, triangular wave, sin wave, etc.) in the pressure resistance durability test are not limited to the above conditions, and may be changed to some extent depending on the use conditions of the hose 1. As the required performance of the hose 1, a target value G is set in advance for the result of the pressure resistance durability test (the number of durability times).
Next, based on the calculated ratio Ta/Tx and the result of the withstand voltage endurance test (endurance count), an appropriate range R of the ratio Ta/Tx satisfying the target value G is grasped. The ratio Ta/Tx is closely related to the degree of the pressure durability of the hose 1, and as illustrated in fig. 4, the ratio Ta/Tx may be set to a specific range in order to improve the pressure durability (the number of times of durability) of the hose 1. That is, the present inventors have found that there is an appropriate range R of the ratio Ta/Tx at which the pressure durability of the hose 1 is in a peak state as illustrated in fig. 4, and have completed the present invention.
In fig. 4, the range of the ratio Ta/Tx where the number of durability times becomes equal to or greater than the target value G becomes the appropriate range R. The metal wire 4 having the specification of the ratio Ta/Tx of the grasped appropriate range R is selected as a member forming the reinforcing layer 3 of the hose 1. In order to vary the ratio Ta/Tx, 1 or more of the wire diameter, material, heat treatment, number of twists, structure (number of metal wires, etc.), and the like of the metal wires 4 are varied (changed) in combination.
Therefore, by using the ratio Ta/Tx, it is possible to select the metal wire 4 of an appropriate specification that more effectively improves the pressure resistance durability of the hose 1. The ratio Ta/Tx can be obtained by performing a tensile test of the metal wire 4 alone. Since it is not necessary to perform a fatigue test of the individual wires 4 as in the conventional case, it is possible to easily select the wires 4 of appropriate specifications.
In the case of the general structure of the high-pressure hose as illustrated in fig. 1 and 2, if the ratio Ta/Tx is 0.85 or more and 0.99 or less, it is advantageous to improve the pressure resistance durability of the hose 1. Therefore, in the hose 1 of the present invention in which the reinforcing layer 3 is formed of the metal wire 4 having the ratio Ta/Tx of 0.85 or more and 0.99 or less, it is advantageous to further effectively improve the pressure durability.
In order to efficiently improve the pressure resistance durability of the hose 1, it is more preferable that the ratio Ta/Tx be 0.94 or less. Similarly, the ratio Ta/Tx is more preferably 0.90 or more. The appropriate range R of the ratio Ta/Tx does not vary significantly as long as the hose 1 is of the construction of the generally employed high pressure hose described above.
[ examples ] A method for producing a compound
As shown in table 1, test samples of the hoses having the structures illustrated in fig. 1 to 2 were produced by changing the wire specifications only by 4 types (examples 1 to 3 and comparative example). Each wire is a steel wire (brass-plated steel wire) having a wire diameter of about 0.38mm formed by twisting metal wires. The 4 kinds of metal wires have substantially the same wire diameter, and have different characteristic values (elongation at break, maximum tensile stress, 0.2% proof stress) by performing a temper rolling process after drawing, for example, and changing conditions such as the roll diameter, the number of rolls arranged, and the press-in amount. The leveling roller process refers to the following processes: a plurality of pairs of opposed rollers are disposed at intervals in the longitudinal direction of the wire, and the wire is passed through a gap D1 (a gap narrower than the outer diameter D0 of the wire) between the outer peripheral surfaces of the pair of rollers in order. The number of rollers is the number of sets of a pair of rollers disposed at intervals in the longitudinal direction of the wire. The press-fit amount is a value calculated from { (outer diameter D0-clearance D1)/outer diameter D0} × 100 (%). The number of layers of the reinforcing layers is 4, and the knitting angles A of the metal wires in the reinforcing layers are approximately the same and are about 54-55 degrees. The thickness of each interlayer rubber layer is about 0.3 mm. The inner surface layer is formed of acrylonitrile-butadiene rubber and styrene-butadiene rubber, the outer surface layer is formed of chloroprene rubber and styrene-butadiene rubber, and the interlayer rubber layer is formed of acrylonitrile-butadiene rubber.
For each test sample, the above-mentioned pressure resistance durability test was performed by filling the inside with a working oil of about 100 ℃ and applying an internal pressure of 42MPa × 150% by a trapezoidal wave having a frequency of 1.33 Hz. The results are shown in table 1 and fig. 5. Fig. 5 is a graph plotting the results of table 1. The target value G of the number of times of durability was 100 ten thousand, and in example 1, even if the number of times of durability exceeded 200 ten thousand, the test specimen was not broken, and the test was terminated in the middle.
[ TABLE 1 ]
From the results shown in table 1 and fig. 5, it is understood that examples 1 to 3 having a ratio Ta/Tx of 0.93 to 0.99 had a withstand voltage durability satisfying the target value of the number of times of durability. When the ratio Ta/Tx is around 0.93, the number of times of durability is estimated to be a peak.
Claims (4)
1. A method for determining the specification of a wire for a hose, which is a method for determining the specification of a wire for forming a reinforcing layer having a spiral structure between an inner surface layer and an outer surface layer of a hose,
an appropriate range of the ratio at which the result of the pressure resistance durability test satisfies a preset target value is grasped based on the ratio of 0.2% yield strength to maximum tensile stress of the wire and the result of the pressure resistance durability test in which the internal pressure is repeatedly applied to the hose under the condition of a predetermined internal pressure, and a wire having a specification of the ratio of the grasped appropriate range is selected as a member forming the reinforcing layer of the hose.
2. A hose comprising an inner surface layer and an outer surface layer which are coaxially laminated, and a reinforcing layer having a spiral structure formed of a metal wire and interposed between the inner surface layer and the outer surface layer,
the ratio of 0.2% yield strength to maximum tensile stress of the metal wire is 0.85 or more and 0.99 or less.
3. The hose of claim 2,
the ratio is 0.94 or less.
4. A hose according to claim 2 or 3,
the wire diameter of the metal wire is 0.20mm to 1.00mm, and the number of layers of the reinforcing layer is 2 to 8.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2021011842A JP2022115307A (en) | 2021-01-28 | 2021-01-28 | Specification determination method for hose metal wire, and hose |
| JP2021-011842 | 2021-01-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114811207A true CN114811207A (en) | 2022-07-29 |
| CN114811207B CN114811207B (en) | 2023-11-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210054779.XA Active CN114811207B (en) | 2021-01-28 | 2022-01-18 | Method for determining specification of metal wire for hose and hose |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2022115307A (en) |
| CN (1) | CN114811207B (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09273090A (en) * | 1996-04-04 | 1997-10-21 | Sumitomo Electric Ind Ltd | Metal cord and composite of the same with rubber |
| JPH11315969A (en) * | 1998-05-06 | 1999-11-16 | Yokohama Rubber Co Ltd:The | Hose |
| JP2000234054A (en) * | 1998-12-18 | 2000-08-29 | Yokohama Rubber Co Ltd:The | Thermoplastic elastomer composition and laminate using this |
| JP3267833B2 (en) * | 1995-04-19 | 2002-03-25 | 新日本製鐵株式会社 | High-strength extra-fine steel wire with excellent fatigue properties and method for producing the same |
| JP2009228114A (en) * | 2008-03-25 | 2009-10-08 | Nippon Seisen Co Ltd | High-strength flexible fine wire of stainless steel |
| JP2011190901A (en) * | 2010-03-16 | 2011-09-29 | Bridgestone Corp | Hose |
| JP4840571B2 (en) * | 2005-12-16 | 2011-12-21 | 日本精線株式会社 | Fine metal strip for reinforcing resin material, resin molded product and medical product using the strip |
| JP2012036927A (en) * | 2010-08-04 | 2012-02-23 | Yokohama Rubber Co Ltd:The | Rubber hose |
| WO2014156666A1 (en) * | 2013-03-25 | 2014-10-02 | 東海ゴム工業株式会社 | High-pressure hydraulic hose |
| EP3061837A1 (en) * | 2015-02-27 | 2016-08-31 | Swiss Steel AG | Blank bainite long product and method for producing the same |
| CN206874986U (en) * | 2017-07-05 | 2018-01-12 | 青岛青橡橡胶有限公司 | A kind of vacuum-resistant steam rubber hose |
| WO2018211818A1 (en) * | 2017-05-16 | 2018-11-22 | 横浜ゴム株式会社 | High-pressure hose |
| US20200103058A1 (en) * | 2018-10-02 | 2020-04-02 | Manuli Hydraulics Italia S.r.l. | Hydraulic Hose |
-
2021
- 2021-01-28 JP JP2021011842A patent/JP2022115307A/en active Pending
-
2022
- 2022-01-18 CN CN202210054779.XA patent/CN114811207B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3267833B2 (en) * | 1995-04-19 | 2002-03-25 | 新日本製鐵株式会社 | High-strength extra-fine steel wire with excellent fatigue properties and method for producing the same |
| JPH09273090A (en) * | 1996-04-04 | 1997-10-21 | Sumitomo Electric Ind Ltd | Metal cord and composite of the same with rubber |
| JPH11315969A (en) * | 1998-05-06 | 1999-11-16 | Yokohama Rubber Co Ltd:The | Hose |
| JP2000234054A (en) * | 1998-12-18 | 2000-08-29 | Yokohama Rubber Co Ltd:The | Thermoplastic elastomer composition and laminate using this |
| JP4840571B2 (en) * | 2005-12-16 | 2011-12-21 | 日本精線株式会社 | Fine metal strip for reinforcing resin material, resin molded product and medical product using the strip |
| JP2009228114A (en) * | 2008-03-25 | 2009-10-08 | Nippon Seisen Co Ltd | High-strength flexible fine wire of stainless steel |
| JP2011190901A (en) * | 2010-03-16 | 2011-09-29 | Bridgestone Corp | Hose |
| JP2012036927A (en) * | 2010-08-04 | 2012-02-23 | Yokohama Rubber Co Ltd:The | Rubber hose |
| WO2014156666A1 (en) * | 2013-03-25 | 2014-10-02 | 東海ゴム工業株式会社 | High-pressure hydraulic hose |
| EP3061837A1 (en) * | 2015-02-27 | 2016-08-31 | Swiss Steel AG | Blank bainite long product and method for producing the same |
| EP3061838A1 (en) * | 2015-02-27 | 2016-08-31 | Swiss Steel AG | Blank bainite long product and method for producing the same |
| WO2018211818A1 (en) * | 2017-05-16 | 2018-11-22 | 横浜ゴム株式会社 | High-pressure hose |
| CN206874986U (en) * | 2017-07-05 | 2018-01-12 | 青岛青橡橡胶有限公司 | A kind of vacuum-resistant steam rubber hose |
| US20200103058A1 (en) * | 2018-10-02 | 2020-04-02 | Manuli Hydraulics Italia S.r.l. | Hydraulic Hose |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114811207B (en) | 2023-11-10 |
| JP2022115307A (en) | 2022-08-09 |
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