JP2004277993A - Steel wire rope and control cable - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a steel wire rope excellent in flexural fatigue durability and to provide a control cable comprising the wire cable. <P>SOLUTION: The wire rope comprising core strand 10, and at least one kind of side strands 20 comprising core strands 25 twisted around the core strand 10, side strands 21 twisted around the core strands 25, wherein the compressive residual stress of side strand 21 of side strands located in the outermost end portion of steel wire rope 1 is 600 MPa or more, the shaping ratio of the side strand is 83-103%, and 6-10% of fastening rate. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a wire rope in which a plurality of strands are twisted and a control cable having the wire rope.

  Currently, wire ropes and control cables are applied in a wide range of industrial fields. Therefore, it is used under various conditions such as land and sea, high temperature and high load, and the use conditions are severe. There is a demand for a wire rope and a control cable having durability that can withstand such severe use conditions. In particular, there is a need for a wire rope that has sufficient fatigue durability when subjected to bending while sliding (bending fatigue fatigue durability).

  Shaping is one of the processes for improving the characteristics of the wire rope, and the shaping rate is often used to indicate the degree of this shaping. The shaping ratio refers to a value (Φ = T / D × 100 [%]) obtained by dividing the waviness diameter T of the strand where the rope is loosened by the measured outer diameter D of the rope. When the shaping ratio Φ is 100% or more, the strands tend to float, the elongation of the ropes increases, and the strands may exhibit shape collapse. Conversely, when the shaping ratio Φ is 100% or less, twisting is likely to return, and when the rope is cut, it is unraveled from the rope end surface. Therefore, in general, a shaping operation is performed with a target of a shaping rate of 90 to 95%.

  As a document which discloses a wire rope in which the bending fatigue durability is improved by defining the range of the shaping ratio, there is cited document 1. In the cited document 1, the shaping ratio Φ is 65 to 90%. And it is shown that when the shaping ratio Φ exceeds 90%, the bending fatigue durability decreases (see Comparative Examples 2 and 3 in Table 2).

However, a wire rope having a shaping ratio Φ in the range of 65 to 90% tends to return its twist, and thus cannot be said to be a wire rope suitable for practical use.
Japanese Patent No. 2669754

  Therefore, the present inventors set the tightening rate and the residual stress to appropriate values even when the value of Φ, which is an ideal value for the shaping ratio, exceeds 90%, to achieve bending fatigue durability. It has been found that a wire rope with excellent properties can be obtained.

  The present invention has been made based on this finding, and an object of the present invention is to provide a wire rope that is more excellent in bending fatigue durability than before and a control cable having the wire rope.

  The wire rope of the present invention is a wire rope having at least one type of side strand comprising a core strand, a core strand twisted around the core strand, and a side strand twisted around the core strand. In the above, the side strand of the side strand located at the outermost end of the wire rope has a compressive residual stress of 600 MPa or more, the side strand has a shaping ratio of 83 to 103%, and further tightens the The rate is 6 to 10%.

  Further, a control cable of the present invention includes the wire rope of the present invention and a conduit through which the wire rope is slidably inserted.

  The side strand of the wire rope of the present invention preferably has a shaping ratio of 91 to 100%. The side strands are preferably of one type, and are preferably composed of one core strand and six side strands.

  The twist structure of the wire rope of the present invention is preferably a 19 + 8 × 7 structure. Preferably, the core strand is a Warrington twist.

  Further, the side strand of the side strand preferably has a zinc-aluminum alloy plating layer, and the zinc-aluminum alloy plating layer preferably contains 1 to 20 wt% aluminum.

  Preferably, the core strand, the side strand, and the core strand and the side strand are twisted with a twisting oil having a SAE viscosity grade of # 80 to # 550.

  In the control cable of the present invention, the surface of the wire rope is desirably coated with a resin. The conduit preferably has a resin liner inside.

  Further, it is desirable that the wire rope slides on the conduit in both push and pull directions.

  In the wire rope of the present invention, the side strand of the side strand located at the outermost end of the wire rope has a compressive residual stress of 600 MPa or more, and the side strand has a shaping ratio of 83 to 103%. By setting the tightening rate to 6 to 10%, a wire rope excellent in fatigue durability when receiving bending while sliding is obtained. Further, the control cable having the wire rope of the present invention also has higher durability and longer life than conventional ones.

  Furthermore, a wire rope having a zinc-aluminum alloy plating layer on the side strands of the side strands has excellent sliding resistance as well as corrosion resistance.

  Further, the wire rope of the present invention is twisted with the twisting oil of # 80 to # 550, so that the wire rope has high productivity and excellent durability.

  In addition, by covering the surface of the wire rope with a resin or providing a resin liner inside the conduit, a control cable having good slidability is obtained.

  Hereinafter, the best mode for carrying out the wire rope and the control cable of the present invention will be described.

[Wire rope]
The wire rope according to the present invention is a so-called multiple wire having a core strand, one or more types of side strands composed of a core strand twisted around the core strand and side strands twisted around the core strand. It is a twisted wire rope.

  The wire rope of the present invention includes a plurality of strands obtained by drawing a steel wire rod. Each element wire may be a steel wire used for a normal wire rope, such as a steel wire made of alloy steel such as carbon steel or stainless steel. Although there is no particular limitation on the area reduction rate of the strand before and after drawing, it is 90 to 99.5%, more preferably 95 to 99.5%. When the area reduction rate of the wire is in the above range, the durability of the wire rope is maintained.

  The shape of the element wire is not particularly limited, and a round wire having a circular cross section is preferable. The thickness of the wire is not particularly limited. The hardness of the strand is a matter to be appropriately selected according to the purpose of use of the wire rope, and the Vickers hardness is 600 to 800 Hv, more preferably 670 to 770 Hv. When the hardness of the wire is in the above range, the durability of the wire rope is maintained.

  The core strand may be made of one core material, or may be made of a plurality of bundled or twisted strands. When twisting a plurality of strands, cross stranding where the inner strand and outer strand are in point contact with each other, parallel twisting where the inner strand and the outer strand are in line contact, It can be twisted. More preferably, it is Warrington twist. The Warrington twist is a dense twist having a high actual cross-sectional area and therefore has excellent tensile strength.

  The side strand includes a core element and a side element twisted around the core element. It consists of two or more layers of side strands such that another side strand (second side strand) is twisted around the side strand (first side strand) twisted around the core strand. Side strands can also be used. When twisting two or more layers of side strands, cross-twisting, parallel twisting, or other twisting methods may be used. There is no particular limitation on the number of core strands and side strands, but it is preferable that the core strand and one side strand be composed of one core strand and six side strands.

  The twist structure of the core strand and the side strand is not particularly limited, and is not particularly limited as long as the twist structure is used for a normal wire rope. In addition to twisting a plurality of side strands into one core strand, the same or another type of side strand (second side strand) around the side strand (first side strand) twisted around the core strand. A structure composed of two or more layers of side strands may be used. Particularly preferred as the twisted structure of the core strand and the side strand is a W (19) + 8 × 7 structure.

  In the wire rope of the present invention, the compressive residual stress of the side strand of the side strand located at the outermost end is 600 MPa or more, more preferably 700 to 1000 MPa. When the side strand is composed of two or more layers, the side strand located at the outermost layer is the side strand located at the outermost end.

  The side strands have a shaping ratio of 83 to 103%, more preferably 91 to 100%. As described above, the shaping ratio is a value (percentage) obtained by dividing the undulation diameter of the strand in which the wire rope is loosened by the measured outer diameter of the wire rope, which is the diameter of the circumscribed circle of the wire rope.

  Further, the tightening rate of the wire rope is 6 to 10%, more preferably 7 to 10%. The tightening rate is a value (percentage) obtained by subtracting the measured outer diameter of the wire rope from the calculated outer diameter of the wire rope by the calculated outer diameter of the wire rope.

  If the values of the compressive residual stress, the shaping rate, and the tightening rate of the side strands of the side strand located at the outermost end are not in the above ranges, a wire rope having sufficient bending fatigue durability cannot be obtained.

  When the measured outer diameter of the wire rope is 1.5 mm, the undulation diameter of the side strand in the preform (shaping before twisting) is 1.65 to 1.95 mm, more preferably 1.75 to 1.95. 95mm, voice shape and voice resistance of twisting machine to twist strands, twisting speed, post form (continuous shaping after twisting), pretension (shape by applying large tension to wire rope before use) And the like, and a wire rope having desired values of residual stress, shaping ratio, and tightening ratio is obtained.

  In addition, the wire rope of the present invention is preferably made of a strand twisted with a twisting oil having a SAE viscosity grade of # 1000 or less. Here, the SAE viscosity grade is a viscosity classification defined by SAE (Society of Automotive Engineers / American Society of Automotive Engineers), and the higher the number, the higher the viscosity. A wire rope twisted with a high-viscosity twisting oil is less durable when used under high-temperature conditions, and becomes a highly durable wire rope. When the SAE viscosity grade exceeds # 1000, the wire rope is twisted. In the twisting step, mechanical loss occurs such that the sliding resistance of the voice part and the friction resistance of the post foam part become unnecessarily high, and the productivity of the wire rope may be reduced. Therefore, more preferably, the core strand, the side strand, and the twist of the core strand and the side strand are twisted with a twisting oil having a SAE viscosity grade of # 80 to # 550. If the viscosity is less than # 80, the durability of the wire rope may be impaired, which is not preferred.

  The side strand of the side strand preferably has a zinc-aluminum alloy plating layer. The zinc-aluminum alloy plating layer preferably contains 1 to 20 wt% of aluminum, more preferably 2 to 15 wt%. It is good to apply zinc-aluminum alloy plating to at least the outermost layer side strand when the side strand is composed of two or more layers, and to at least the outermost layer side strand when the side strand is composed of the two or more side strands. . By applying the zinc-aluminum alloy plating, the corrosion resistance and the slipperiness of the wire rope are improved.

  As a method of applying a zinc-aluminum alloy plating, a conventionally used method such as a method of dipping a steel wire (base material) before wire drawing in a molten alloy plating bath (dipping), an electroplating method, and the like. Is fine. The thickness of the zinc-aluminum alloy plating layer formed on the base material is 10 to 50 μm, more preferably 20 to 40 μm.

  When a zinc-aluminum alloy plating is applied to a steel wire (base material) before wire drawing, a Zn-Al-Fe ternary intermetallic compound layer is obtained. Aluminum has the function of increasing the toughness of the intermetallic compound layer. Therefore, the hardness and thickness of the Zn-Al-Fe ternary intermetallic compound layer affect the durability of the wire rope. Therefore, the hardness of the Zn—Al—Fe ternary intermetallic compound layer is set to 90 to 200 Hv, more preferably 100 to 160 Hv, and the thickness is set to 3 to 15 μm, more preferably 4 to 10 μm, and the wire drawing is performed. Durability after processing can be improved.

  Further, the surface of the wire rope of the present invention is preferably covered with a resin such as polyethylene, polyamide, and acetal resin. By covering the surface of the wire rope with the resin, the durability is further improved, and the slidability when the wire rope is inserted into a control cable conduit or the like is improved.

[Control cable]
The control cable of the present invention includes the above-described wire rope of the present invention and a conduit through which the wire rope is slidably inserted.

  The conduit may be a conduit having a general structure composed of an outer spring wound by rolling a steel wire or the like into a rectangular cross section and winding. The conduit may have a structure in which an outer spring is spirally tightly wound on a cylindrical liner made of resin. A control cable having a resin liner has good slidability of the wire rope and excellent operability. As the material of the liner, polyethylene, acetal resin, polybutylene terephthalate and the like are preferable. Further, a resin outer coat may be attached to the outer periphery of the outer spring.

  In the control cable of the present invention, it is preferable that the wire rope slides in the conduit in both the pulling direction and the pushing and pulling direction, and is used for operation of various openers such as an accelerator of an automobile, a throttle, a clutch, a brake, and a window regulator. Can be

  Hereinafter, examples and comparative examples of the present invention will be described with reference to the drawings and tables.

(Sample 1)
A steel wire (SWRH62A) was prepared as a bus bar. A galvanized layer (thickness: 30 μm) is formed on the surface of this bus bar by dipping and drawn to form a core strand of a core strand, first, second, and third side strands and a core strand of a side strand. Obtained. The side strands of the side strands were formed by dipping a zinc-aluminum alloy plating layer (thickness: 30 μm) containing 11% aluminum on the surface of the bus bar, and the bus bar was drawn. The outer diameter of each of the drawn wires was a value shown in Table 1. In addition, by wire drawing, the area reduction rate of each strand became 97 to 99%, and the hardness became 750 Hv (Table 2).

  Then, the production conditions were adjusted so that the compressive residual stress, shaping ratio, and tightening ratio shown in Table 2 were obtained, and the individual wires were twisted. Obtained. The twist oil used had a SAE viscosity grade of # 100.

  In addition, the column of * of Table 2 is the value of the side strand of a side strand. For wire ropes having the values of compressive residual stress, shaping rate, and tightening rate shown in Table 2, adjust the pressure, tension, and the degree of preform / postform applied to the wire rope in the manufacturing process. Can be obtained by

  In addition, the W (19) + 8 × 7 structure is defined as a single core strand 10 having a Warrington-type twisted structure and having 19 strands and eight side strands 20 having 7 strands. It is the structure of the rope that is composed. FIG. 1 shows a cross-sectional shape of a wire rope having a W (19) + 8 × 7 structure. The hatched portion in FIG. 1 indicates the portion where the twist oil is attached.

  Specifically, six first strands 11 are arranged around one core strand 15, and between the first strands 11 adjacent to each other around the first strand 11. Six third strands 13 are arranged so as to be positioned, and six second strands 12 are arranged between adjacent third strands. These side strands 11 to 13 are simultaneously twisted in the same pitch and in the same direction, and parallel stranding is performed so that the strands are in line contact with each other. In the side strand 20, six side strands 21 are twisted around the core strand 25. Twisting the side strands 20 around the core strand 10 results in a wire rope having the cross section shown in FIG.

  For the side strands of the side strands, zinc-aluminum alloy plated strands were used, and for the other strands, zinc plated strands were used.

(Sample 2)
A wire rope of sample 2 was obtained in the same manner as in sample 1, except that zinc-plated wires were used for all the wires.

(Sample 3)
A wire rope of Sample 3 was obtained in the same manner as in Sample 1, except that the compressive residual stress of the side strand of the side strand was 700 MPa.

(Sample 4)
A wire rope of Sample 4 was obtained in the same manner as in Sample 1, except that the compressive residual stress of the side strand of the side strand was set to 800 MPa.

(Sample 5)
A wire rope of Sample 5 was obtained in the same manner as in Sample 1, except that the shaping rate was 90%.

(Sample 6)
A wire rope of Sample 6 was obtained in the same manner as in Sample 1, except that the shaping ratio was 94%.

(Sample 7)
A wire rope of Sample 7 was obtained in the same manner as in Sample 1, except that the hardness of the strand was 700 Hv.

(Sample 8)
A wire rope of Sample 8 was obtained in the same manner as in Sample 1, except that the compressive residual stress of the side strand of the side strand was 400 MPa.

(Sample 9)
As the side strands of the side strands, the strands coated with zinc-aluminum alloy containing 5% aluminum were used, and the values of the hardness, compressive residual stress, and shaping ratio of the side strands shown in Table 2 were used. Otherwise, the wire rope of Sample 9 was obtained in the same manner as in Sample 1.

(Sample 10)
A wire rope of Sample 10 was obtained in the same manner as in Sample 1, except for the values of the hardness of the side strands of the side strands shown in Table 2, the residual compressive stress, and the shaping ratio.

(Sample 11)
A wire rope of Sample 11 was obtained in the same manner as in Sample 1, except for the values of the compressive residual stress and the shaping ratio of the side strands of the side strands shown in Table 2.

(Sample 12)
A wire rope of Sample 12 was obtained in the same manner as in Sample 1, except that the compressive residual stress of the side strand of the side strand was set to 400 MPa and a twisting oil of SAE viscosity grade # 60 was used.

(Sample 13)
A wire rope of Sample 13 was obtained in the same manner as in Sample 1, except that the compressive residual stress of the side strand of the side strand was set to 400 MPa, and a twist oil of SAE viscosity grade # 300 was used.

(Sample 14)
A wire rope of Sample 14 was obtained in the same manner as in Sample 1, except that the compressive residual stress of the side strand of the side strand was 400 MPa, and a twisting oil of SAE viscosity grade # 500 was used.

(Sample 15)
A wire rope of Sample 15 was obtained in the same manner as in Sample 1, except that the compressive residual stress of the side strand of the side strand was 400 MPa, and a twisting oil of SAE viscosity grade # 1000 was used.

  The wire reduction ratio in Table 2 is a value represented by 100-S [%], where S is a value (percentage) obtained by dividing the cross-sectional area of the wire by the cross-sectional area of the bus. Table 2 shows the minimum value and the maximum value of the measurement at a plurality of locations. The hardness of the strand was measured at a measurement load of 1.96 N (0.2 kgf) using a micro Vickers hardness tester at a plurality of locations on the cross section of the strand, and the average value was calculated. The residual stress was measured for each side strand 21 of the side strand 20 by a fine bundle X-ray residual stress measuring device.

The shaping rate is determined by the waviness diameter T of the strand obtained by loosening the wire rope shown in FIG. 2B and the measured outer diameter D of the wire rope which is the diameter of the circumscribed circle of the wire rope shown in FIG. 1 or FIG. When you measure
Shaping rate = T / D × 100 [%]
Is represented by That is, the shaping ratio in Table 2 is a value (percentage) obtained by dividing the waviness diameter T by the measured outer diameter D of the wire rope, where T is the waviness diameter of the side strand 20.

Tightening rate, when calculating the calculated outer diameter D 'which is the sum of the outer diameters of the individual wires in the diameter direction of the wire rope, and measuring the measured outer diameter D of the wire rope,
Tightening rate = (D′−D) / D ′ × 100 [%]
Is represented by That is, in the tightening ratios in Table 2, the calculated outer diameter D ′ is such that the outer diameter of the core strand 15 of the core strand 10 is a, the outer diameter of the first side strand 11 is b ₁ , and the outer diameter of the second side strand 12 is When the outer diameter is b ₂ , the outer diameter of the core strand 25 of the side strand 20 is c, and the outer diameter of the side strand 21 is c,
_{D '= (a + 2b 1} + 2b 2) +2 (c + 2d)
It becomes.

  The calculated outer diameter of each strand and the calculated outer diameter of the wire rope are as shown in Table 1.

《Evaluation》
<Bending fatigue endurance test>
The wire ropes of Samples 1 to 15 were subjected to a bending fatigue durability test (hereinafter, referred to as a durability test). The durability test was performed using a fixed pulley and a rotating pulley. The method of each durability test is as follows.

  FIG. 3 shows an apparatus for measuring the bending fatigue durability of a wire rope. One end of the wire rope 1 having a total length of 1000 mm (that is, any one of the samples 1 to 15) is fixed to the air cylinder 51. The wire rope 1 extending from the air cylinder 51 is turned 180 ° into a groove 521 formed around the pulley 52, and is immediately turned 90 ° by a groove 531 formed around the pulley 53. Was routed to The wire rope 1 was passed through a through hole provided in a stopper 54, and a 10 kg weight 55 was connected to the other end of the wire rope 1.

  FIG. 4 is a front view and a side view of the pulleys 52 and 53, and FIG. 5 is an enlarged view of the groove portions of the pulleys 52 and 53. The pulleys 52 and 53 were made of acetal resin, and the groove bottom diameter L was 28 mm. The groove angle θ was 30 °, and the radius of curvature R of the groove bottom was 1.5 mm.

  In the durability test using the fixed pulley, the pulleys 52 and 53 are fixed, and the wire rope 1 slides in the groove portions 521 and 531 of each pulley in the direction of the arrow in FIG. ing. In the durability test using a rotating pulley, the pulleys 52 and 53 are rotatably fixed, and the wire rope reciprocates by the reciprocation of the air cylinder 51, and the pulleys 52 and 53 rotate in the direction of the arrow in FIG. It is supposed to.

  The durability test was performed under the following conditions. The wire rope 1 was pulled by the air cylinder 51 in the direction in which the weight 55 rises, and was held for 0.5 seconds at a tension of 343 N when the weight 55 hit the stopper 54. Thereafter, the wire rope 1 was made to move in a direction in which the weight 55 descends. The reciprocating movement of the ascending and descending was one reciprocation. At this time, the stroke of the reciprocating movement of the wire rope 1 was 100 mm, and the reciprocating speed was 20 reciprocations / minute.

  In the durability test using the fixed pulley, the presence or absence of breakage of the wire rope after reciprocating 200,000 times was confirmed. In a durability test using a rotating pulley, the number of reciprocations until the wire rope was broken was measured. Table 3 shows the test results.

  In Table 3, a sample in which the wire rope was not broken after reciprocating 200,000 times with the fixed pulley was described as “no break”. In addition, the number of reciprocations until the wire rope breaks in the rotating pulley is described.

  According to Table 3, the wire rope having a compressive residual stress of the side strand of the side strand of 600 MPa or more, a shaping ratio of 83 to 103%, and a tightening ratio of 6 to 10% has high bending fatigue durability. I understand. Since no breakage was confirmed in the durability test using the fixed pulley, a specific description will be given below based on the results of the durability test using the rotating pulley.

  In a durability test using a rotating pulley, Samples 1 to 7 did not break even when the number of reciprocations was 140,000 or more, and showed high durability. Further, Samples 1 and 4 to 7 showed particularly high durability. In Samples 3, 4, and 5, the residual stress or the shaping ratio was slightly lower, but the values of the residual stress, the shaping ratio, and the tightening ratio were within the above ranges, indicating sufficient durability. Sample 2 showed sufficient durability, though lacking in slipperiness, because the element wire only subjected to galvanization was used. That is, in the samples 1 to 7 having high durability, the values of the residual stress, the shaping ratio, and the tightening ratio were all within the above ranges.

  Samples 8 to 12 were broken when the number of reciprocations was 120,000 or less, and had low durability. In these samples, at least one of the residual stress, the shaping ratio, and the tightening ratio was a wire rope that did not fall within the above range.

  Further, among Samples 8 and 12 to 15 having the same residual stress, shaping ratio, and tightening ratio, Sample 8 and Samples 13 to 15 each composed of a strand twisted with a high-viscosity twisting oil are # 60. The wire rope was more durable than the sample 12 using the twisting oil.

<Salt spray test>
A salt spray test was performed on the wire ropes of Samples 1, 2, and 9. The salt spray test was performed according to JISZ2371. The environmental temperature was maintained at 33 to 37 ° C., the salt water was continuously sprayed, and the time until red rust was generated was measured. FIG. 6 shows the test results.

  Among the samples having a zinc-aluminum alloy plating layer, in sample 1 containing 11% aluminum and sample 9 containing 5% aluminum, the time from the start of the test until the occurrence of red rust was 336 hours. On the other hand, Sample 2 having a galvanized layer (containing no aluminum) had a time of 240 hours from the start of the test to the occurrence of red rust. Therefore, it was found that Samples 1 and 9 having the zinc-aluminum alloy plating layer had excellent corrosion resistance.

BRIEF DESCRIPTION OF THE DRAWINGS It is sectional drawing of the wire rope which is one Example of this invention. It is explanatory drawing for demonstrating the shaping rate of a wire rope. FIG. 3 is an apparatus diagram for measuring bending fatigue durability of a wire rope. FIG. 4 is an enlarged view of a pulley used in the device of FIG. FIG. 4 is a partially enlarged view of a pulley used in the device of FIG. 3. It is the graph which showed the red rust generation time in the salt spray test.

Explanation of reference numerals

1: wire rope 10: core strand 11: first side wire 12: second side wire 13: third side wire 15: core strand 20 of core strand: side strand 21: side strand 25 of side strand : Core strand of side strand

Claims (22)

In a wire rope having one or more types of side strands consisting of a core strand and a core strand twisted around the core strand and a side strand twisted around the core strand,
The side strand of the side strand located at the outermost end of the wire rope has a compressive residual stress of 600 MPa or more, the side strand has a shaping rate of 83 to 103%, and further has a tightening rate of 83 to 103%. A wire rope characterized by being 6 to 10%.   The wire rope according to claim 1, wherein the side strand has a shaping ratio of 91 to 100%.   The wire rope according to claim 1, wherein the side strand is one type.   The wire rope according to any one of claims 1 to 3, wherein the side strand includes one core strand and six side strands.   The wire rope according to any one of claims 1 to 4, wherein the twisted structure of the wire rope is a 19 + 8 × 7 structure.   The wire rope according to any one of claims 1 to 5, wherein the core strand is a Warrington twist.   The wire rope according to claim 1, wherein the side strand of the side strand has a zinc-aluminum alloy plating layer.   The wire rope according to claim 7, wherein the zinc-aluminum alloy plating layer contains 1 to 20 wt% of aluminum.   The wire rope according to claim 1, wherein a surface of the wire rope is covered with a resin.   The wire rope according to claim 1, wherein the core strand, the side strand, and the core strand and the side strand are twisted with a twisting oil having a SAE viscosity grade of # 80 to # 550. A control cable having a wire rope and a conduit slidably inserted through the wire rope,
The wire rope has a core strand, and one or more types of side strands each including a core strand twisted around the core strand and a side strand twisted around the core strand. The side strand of the side strand located at the outermost end has a compressive residual stress of 600 MPa or more, the side strand has a shaping ratio of 83 to 103%, and a tightening ratio of 6 to 10%. % Control cable.   The wire rope according to claim 11, wherein the side strand has a shaping ratio of 91 to 100%.   The control cable according to claim 11, wherein the wire rope includes one type of side strand.   The control cable according to any one of claims 11 to 13, wherein the side strand includes one core strand and six side strands.   The control cable according to any one of claims 11 to 14, wherein the twisted structure of the wire rope is a 19 + 8x7 structure.   The control cable according to any one of claims 11 to 15, wherein the core strand is a Warrington twist.   The control cable according to claim 11, wherein the side strand of the side strand has a zinc-aluminum alloy plating layer.   The control cable according to claim 17, wherein the zinc-aluminum alloy plating layer contains 1 to 20 wt% of aluminum.   13. The control cable according to claim 11, wherein the conduit has a resin liner inside.   The control cable according to claim 11, wherein the wire rope slides on the conduit in both directions.   13. The control cable according to claim 11, wherein a surface of the wire rope is covered with a resin.   The control cable according to claim 11, wherein the core strand, the side strand, and the core strand and the side strand are twisted with a twisting oil having a SAE viscosity grade of # 80 to # 550.

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