CN103498356A - Technology for producing 18*7+FC steel wire rope - Google Patents
Technology for producing 18*7+FC steel wire rope Download PDFInfo
- Publication number
- CN103498356A CN103498356A CN201310479562.4A CN201310479562A CN103498356A CN 103498356 A CN103498356 A CN 103498356A CN 201310479562 A CN201310479562 A CN 201310479562A CN 103498356 A CN103498356 A CN 103498356A
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- CN
- China
- Prior art keywords
- steel wire
- wire rope
- rope
- strand
- diameter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- D07B1/0673—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core having a rope configuration
-
- 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
- D07B2201/2015—Strands
- D07B2201/2021—Strands characterised by their longitudinal shape
-
- 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
Abstract
The invention relates to a technology for producing an 18*7+FC steel wire rope. A pre-spiral formed through pre-formation and an inherent spiral in a stranded rope in the steel wire rope should meet the relational expression that L1=L2=((S2+(piD)2)1/2, wherein L1 is the length of the spiral formed in the pre-deformation of the stranded rope, L2 is the length of the inherent spiral, in the steel wire rope, of the stranded rope, S2 is the lay length of the rope, and D0 is the diameter of a twisted circle of the steel wire rope. The quality of the steel wire rope provided by the technology is obviously improved, the service life of the steel wire rope is obviously prolonged, and using requirements of users are met.
Description
Technical field
The present invention relates to a kind of producing technique of steel cable, relate in particular to a kind of production technology of 18 * 7+FC steel wire rope.
Background technology
Steel wire rope is the flexible cable twisted into many or multiply finer wire, and steel wire rope is to be twisted thigh by the multilayer steel wire, then, centered by wire rope core, by some thighs, twists with the fingers helically wound rope.Steel wire rope can be by shape, level, and the modes such as state are classified.Be divided into round-strand rope, braided wire rope and band rope by shape; Steel wire rope by twist around level can be divided into single wiring, double wrap rope and three wirings; Steel wire rope also can be divided into by the contact condition between every layer of steel wire in thigh 3 kinds of a contact, line contact or face contacts.In material carrying machine, for promoting, traction, tension and carrying.The intensity of steel wire rope is high, from heavy and light, stable working, be difficult for whole root fracture suddenly, reliable operation.
Steel wire rope plays the effect of bearing load, and its performance is mainly determined by steel wire.Steel wire be carbon steel or steel alloy by the cold drawn or cold rolling circle formed (or abnormity) silk material, there is very high intensity and toughness, and according to environment for use condition difference, steel wire carried out to surface treatment.The Main Function of wire rope core is increase steel wire rope elasticity and toughness, lubricated steel wire, alleviates friction, improves service life of steel wire rope.Wire rope core type commonly used includes the materials such as organic fiber (as fiber crops, cotton), synthetic fiber, asbestos core (hot conditions) or soft metal.
18 * 7+FC steel wire rope refers to that steel wire rope is by 18 personal shares, and per share 7 steel wires form, and FC is adding a hemp core in the middle of referring to steel wire rope.18 * 7+FC steel wire rope be by inside and outside two-layer strand in steel wire rope in the opposite direction twisting form, thereby, when bearing tension, the rope of this structure has low rotatory preferably; 18 * 7+FC steel cord structure is tight, and the activity coefficient of steel wire rope is higher than other round-strand rope, for same diameter, and the steel wire rope of same intensity, the rupture pull force of this structure steel wire rope is than high 8% left and right of other common round-strand rope; With common round-strand rope and 6 * 19 linear contact lay wire ropes, compare simultaneously, 18 * 7+FC multistrand rope and cylinder wheel tread long-pending large (the strong point of rope is many), fatigue durability is good.Therefore 18 * 7+FC steel wire rope is widely used in the vertical shaft for mine lifting, and sinking shaft requires the non-rotary occasion of steel wire rope with well-bucket elevator rope and single rope crane etc.
Along with the application of steel wire rope is more and more extensive, its properity also to be had higher requirement, this just needs the developments such as construction of wire rope design, research and development, manufacturing process.But the common problem of current 18 * 7+FC steel wire rope has: the rotation of (1) rope, and reason is that 18 * 7+FC steel wire rope ectonexine number of share of stock differs more, torsional moment and the internal layer rope torsional moment sum of outer rope are not cancelled out each other; (2) layering of ectonexine rope and outer layer strand are subsided, and reason is that in rope, hemp core is less, and the wire rope core support force is inadequate; (3) restrict loosely, reason is that to close when rope predeformation parameter improper, and in steel wire rope, thread residual stress and twist stress are eliminated not thorough.
Steel wire rope is used in rotation status, not only affects hoisting velocity and operating efficiency, and the mutual frictional heating of on-stream steel wire rope, cause the steel wire timeliness, cause early stage fracture of wire, the service life of impact rope, the normal use of the layering of ectonexine rope or the loose also impact rope of restricting.In addition, anti-rotating wire rope, as irreplaceable steel cord structure kind, has purposes very widely.Along with applying working condition requires the continuous rising of its bearing capacity and the continuous progress of Wire Rope Design manufacturing technology, people are more and more darker to the product cognition degree, also day by day obvious to the demand of New methods in working of exploitation anti-rotating wire rope.Therefore, be necessary production technology is studied and improved to improve quality and the service life of steel wire rope.
Summary of the invention
The object of the present invention is to provide a kind of 18 * 7+FC producing technique of steel cable.The not rotatory of the steel wire rope of explained hereafter of the present invention is significantly improved, and the internal layer rope is flexible, and it is substantially concordant that steel wire rope cuts off fracture, has prevented in production and use procedure the layering of ectonexine steel wire rope and the defect such as loose.
For reaching this purpose, the present invention adopts following technical scheme:
A kind of 18 * 7+FC producing technique of steel cable, the pre-spiral that predeformation forms should with steel wire rope in the intrinsic spiral of strand meet relational expression: L
1=L
2=((S
2+ (π D)
2)
1/2, in formula: L
1the helix length formed when the predeformation for strand; L
2intrinsic helix length for strand in steel wire rope; S
2for the rope lay pitch; D
0for the twisting wire rope circular diameter.
Steel wire rope is loose brings a lot of inconvenience to the user.The present invention adopts above technical scheme to produce preformed wire rope, adopt pre-former to make thigh produce in advance helical form, while closing rope, thigh closes in rope, after stock-traders' know-how predeformation with preformed shape, eliminated most of residual stress and twist stress in steel wire rope, thereby made steel wire rope not loose.
As optimal technical scheme, producing technique of steel cable of the present invention, during predeformation, formed strand curvature should with strand, the intrinsic curvature in steel wire rope be identical.Be 1/R=1/ ρ.
Reach desirable predeformation effect, obtain best not loose performance, related factor is a lot, comprises construction of wire rope, specification, material capability, the lay pitch, twisting tension force, the factors such as distortion supporting-point roller footpath, roll spacing and drafts.Whether the predeformation parameter is selected suitable is the key of producing preformed wire rope, thus we to catch topmost technological parameter be that roll spacing and drafts are as the basis of determining the predeformation parameter.
As optimal technical scheme, producing technique of steel cable of the present invention, the roller square is 0.80～0.86 times of the steel wire rope lay pitch, is for example 0.81 times, 0.83 times, 0.84 times, 0.85 times.
Preferably, the roller square is 0.80～0.84 times of the steel wire rope lay pitch.The roller square i.e. distance between the deformation wheel mid point of front and back.
As optimal technical scheme, producing technique of steel cable of the present invention, drafts is 30-40mm, such as being 31mm, 33mm, 35mm, 37mm, 39mm etc.
Preferably, drafts is 35-38mm.
The size of drafts and construction of wire rope, intensity and rope footpath etc. are relevant.The drafts of high strength wire rope is greater than the drafts of low-strength wire rope, this is because the elastic restoring force of high-tensile steel wires is large, the helix-deformed often invar silk intensity that occurs in the short time in pre-former of thigh is high and recover, and curvature is diminished, and causes that steel wire rope is loose.For this reason, make steel wire rope reach not loose, just must give larger drafts.
As optimal technical scheme, producing technique of steel cable of the present invention, in steel wire rope, the laying pitch coefficient of thigh is 7.5-8.0 times, such as being 7.55 times, 7.6 times, 7.62 times, 7.66 times, 7.7 times, 7.75 times, 7.78 times etc., the laying pitch coefficient of outer rope is 6-6.5 times, such as being 6.1 times, 6.2 times, 6.3 times, 6.4 times etc., the lay pitch of internal layer rope is not more than half of the outer rope lay pitch, such as for being 1/5,1/4,1/3 etc.
Because the ectonexine number of share of stock of circle strand multi-strand wire rope (as 18 * 7+FC) is mutually far short of what is expected, under the same conditions, internal layer rope torsional moment sum and outer torsional moment sum are difficult to offset, and therefore must reach its not verticity by other measure.The lay pitch that suitably reduces thigh can increase the turning moment of thigh, thereby can increase burst effect of controlling to the rope turning moment, and the turning moment of rope is weakened.Around this principle, we are set as 7.5-8.0 to the laying pitch coefficient of in 18 * 7+FC steel wire rope strand doubly, and the laying pitch coefficient of outer rope is 6-6.5 times, and the lay pitch of internal layer rope is not more than half of the outer rope lay pitch.
As optimal technical scheme, producing technique of steel cable of the present invention, internal layer rope deformation rate is less than or equal to 30%, such as being 2%, 5%, 7%, 9%, 11%, 15%, 18%, 21%, 26%, 29% etc., is preferably and is less than or equal to 20%.
For the resultant moment that makes steel wire rope ectonexine rope goes to zero, aborning, six strands of internal layers are not carried out to predeformation, internal layer rope deformation rate is controlled in 30%, intentionally the internal layer rope is twisted into to half loose condition (of surface), allow it that larger elasticity is arranged, purpose is in order suitably to increase the torsional moment of internal layer rope, in order to the torsional moment of the outer rope of balance.After improving, the retractility of internal layer rope reduces simultaneously.Before improvement, six strands of internal layers carry out predeformation, relatively without the rope of predeformation, less through the torsional moment of predeformation internal layer rope, thereby corresponding also less to the torsional moment role of the outer rope of balance through the internal layer rope of predeformation.
As optimal technical scheme, producing technique of steel cable of the present invention, the external diameter of internal layer rope is a bit larger tham the diameter of the inscribed circle of outer rope.
Occur in the steel wire rope use procedure that the layering of ectonexine rope and the outer layer strand first cause of defect such as subside is because hemp core in rope is less, the diameter that the wire rope core support force causes the external diameter of internal layer rope to be less than outer rope inscribed circle not causes, for guaranteeing that steel wire rope does not in use produce ectonexine rope segregation phenomenon, when design, should guarantee that the external diameter of internal layer rope is a bit larger tham the diameter of the inscribed circle of outer rope.
As optimal technical scheme, producing technique of steel cable of the present invention, account for steel wire rope nominal diameter 30-35% by the hemp core diameter, such as the ratio that is 31%, 32%, 33.5%, 34%, 34.5% etc., select hemp core, be preferably the ratio that accounts for steel wire rope nominal diameter 33% in the hemp core diameter and select hemp core.
The present invention has obtained than positive effect after 18 * 7+FC producing technique of steel cable is adopted to above corrective measure.With implement corrective measure before compare, the not rotatory of rope improves, the internal layer rope is flexible, it is substantially concordant that steel wire rope cuts off fracture, prevented the appearance of ectonexine steel wire rope layering in production and use procedure and loose etc. defect.
The specific embodiment
For ease of understanding the present invention, it is as follows that the present invention enumerates embodiment.Those skilled in the art should understand, described embodiment helps to understand the present invention, should not be considered as concrete restriction of the present invention.
As no specific instructions, various raw material of the present invention all can obtain by commercially available; Or prepare according to the conventional method of this area.Unless otherwise defined or described herein, the familiar meaning of all specialties used herein and scientific words and those skilled in the art is identical.Any method similar or impartial to described content and material all can be applicable in the inventive method in addition.
The experimental technique of unreceipted actual conditions in the following example, measure according to national standard usually.If there is no corresponding national standard, according to general international standard, normal condition or the condition of advising according to manufacturer, carry out.Unless otherwise indicated, otherwise all umbers are weight portion, and all percentages are weight percentage.
Embodiment 1.
A kind of producing technique of steel cable, rope footpath 26mm, intensity 1689MPa, lay pitch 172mm, roll spacing 152mm, drafts 30mm, in steel wire rope, the laying pitch coefficient of thigh is 7.5 times, and the laying pitch coefficient of outer rope is 6.5 times, and the lay pitch of internal layer rope is half of the outer rope lay pitch.
Embodiment 2
A kind of producing technique of steel cable, rope footpath 26mm, intensity 1675MPa, lay pitch 175mm, roll spacing 155mm, drafts 34mm, in steel wire rope, the laying pitch coefficient of thigh is 8.0 times, and the laying pitch coefficient of outer rope is 6 times, and the lay pitch of internal layer rope is 1/3 of the outer rope lay pitch; Internal layer rope deformation rate is 28%; The external diameter of internal layer rope is a bit larger tham the diameter of the inscribed circle of outer rope; The ratio that accounts for steel wire rope nominal diameter 30% in the hemp core diameter is selected hemp core.
Embodiment 3
A kind of producing technique of steel cable, rope footpath 27mm, intensity 1750MPa, lay pitch 174mm, roll spacing 160mm, drafts 37mm, in steel wire rope, the laying pitch coefficient of thigh is 7.7 times, and the laying pitch coefficient of outer rope is 6.2 times, and the lay pitch of internal layer rope is 2/5 of the outer rope lay pitch; ; Internal layer rope deformation rate 20%; The external diameter of internal layer rope is a bit larger tham the diameter of the inscribed circle of outer rope; The ratio that accounts for steel wire rope nominal diameter 33% in the hemp core diameter is selected hemp core.
Embodiment 4
A kind of producing technique of steel cable, rope footpath 29mm, intensity 1685MPa, lay pitch 177mm, roll spacing 160mm, drafts 39mm, in steel wire rope, the laying pitch coefficient of thigh is 7.9 times, and the laying pitch coefficient of outer rope is 6.1 times, and the lay pitch of internal layer rope is 1/4 of the outer rope lay pitch; ; Internal layer rope deformation rate 10%; The external diameter of internal layer rope is a bit larger tham the diameter of the inscribed circle of outer rope; The ratio that accounts for steel wire rope nominal diameter 34% in the hemp core diameter is selected hemp core.
Utilize the not rotatory of the steel wire rope of explained hereafter provided by the invention to be improved, the internal layer rope is flexible, and it is substantially concordant that steel wire rope cuts off fracture, has prevented the appearance of ectonexine steel wire rope layering in production and use procedure and loose etc. defect.
Should be noted that and understand, in the situation that do not break away from the desired the spirit and scope of the present invention of accompanying claim, can make to the present invention of foregoing detailed description various modifications and improvement.Therefore, the scope of claimed technical scheme is not subject to the restriction of given any specific exemplary teachings.
Applicant's statement, the present invention illustrates detailed process flow of the present invention by above-described embodiment, but the present invention is not limited to above-mentioned detailed process flow, does not mean that the present invention must rely on above-mentioned detailed process flow and could implement.The person of ordinary skill in the field should understand, any improvement in the present invention, to the interpolation of the equivalence replacement of each raw material of product of the present invention and auxiliary element, the selection of concrete mode etc., within all dropping on protection scope of the present invention and open scope.
Claims (10)
1. 18 * 7+FC producing technique of steel cable, is characterized in that, the pre-spiral that predeformation forms should with steel wire rope in the intrinsic spiral of strand meet relational expression: L
1=L
2=((S
2+ (π D)
2)
1/2, in formula: L
1the helix length formed when the predeformation for strand; L
2intrinsic helix length for strand in steel wire rope; S
2for the rope lay pitch; D
0for the twisting wire rope circular diameter.
2. steel wire rope according to claim 1, is characterized in that, during predeformation, formed strand curvature should with strand, the intrinsic curvature in steel wire rope be identical.
3. steel wire rope according to claim 1 and 2, is characterized in that, the roller square is 0.80～0.86 times of the steel wire rope lay pitch.
4. steel wire rope according to claim 3, is characterized in that, the roller square is 0.80～0.84 times of the steel wire rope lay pitch.
5. according to the described steel wire rope of claim 1-4 any one, it is characterized in that, drafts is 30-40mm.
6. steel wire rope according to claim 5, is characterized in that, drafts is 35-38mm.
7. according to the described steel wire rope of claim 1-6 any one, it is characterized in that, the laying pitch coefficient in steel wire rope strand be 7.5-8.0 doubly, the laying pitch coefficient of outer rope be 6-6.5 doubly, the lay pitch of internal layer rope is not more than half of the outer rope lay pitch.
8. according to the described steel wire rope of claim 1-7 any one, it is characterized in that, internal layer rope deformation rate is less than or equal to 30%, is preferably and is less than or equal to 20%.
9. according to the described steel wire rope of claim 1-8 any one, it is characterized in that, the external diameter of internal layer rope is a bit larger tham the diameter of the inscribed circle of outer rope.
10. according to the described steel wire rope of claim 1-9 any one, it is characterized in that, the ratio that accounts for steel wire rope nominal diameter 30-35% in the hemp core diameter is selected hemp core, is preferably the ratio that accounts for steel wire rope nominal diameter 33% in the hemp core diameter and selects hemp core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310479562.4A CN103498356A (en) | 2013-10-14 | 2013-10-14 | Technology for producing 18*7+FC steel wire rope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310479562.4A CN103498356A (en) | 2013-10-14 | 2013-10-14 | Technology for producing 18*7+FC steel wire rope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103498356A true CN103498356A (en) | 2014-01-08 |
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ID=49863607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310479562.4A Pending CN103498356A (en) | 2013-10-14 | 2013-10-14 | Technology for producing 18*7+FC steel wire rope |
Country Status (1)
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|---|---|
| CN (1) | CN103498356A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104532633A (en) * | 2014-12-24 | 2015-04-22 | 鞍钢钢绳有限责任公司 | Method for controlling shaping rate of steel wire ropes |
| CN107354787A (en) * | 2017-07-22 | 2017-11-17 | 南通松诚实业有限公司 | Friction drive hoist lifting head rope |
| CN114729503A (en) * | 2019-11-15 | 2022-07-08 | 米其林集团总公司 | Double-layer multi-strand cord with a coated inner layer and improved properties |
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| CN201027282Y (en) * | 2007-03-30 | 2008-02-27 | 南通钢绳(集团)有限公司 | Novel zinc coated wire ropes |
| US20100200337A1 (en) * | 2002-01-09 | 2010-08-12 | Jorma Mustalahti | Elevator |
| CN102124528A (en) * | 2008-08-15 | 2011-07-13 | 3M创新有限公司 | Stranded composite cable and method of making and using |
| CN102449230A (en) * | 2009-06-03 | 2012-05-09 | 米其林技术公司 | Cable with three layers, rubberised on site, for the framework of a tyre carcass |
-
2013
- 2013-10-14 CN CN201310479562.4A patent/CN103498356A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100200337A1 (en) * | 2002-01-09 | 2010-08-12 | Jorma Mustalahti | Elevator |
| CN201027282Y (en) * | 2007-03-30 | 2008-02-27 | 南通钢绳(集团)有限公司 | Novel zinc coated wire ropes |
| CN102124528A (en) * | 2008-08-15 | 2011-07-13 | 3M创新有限公司 | Stranded composite cable and method of making and using |
| CN102449230A (en) * | 2009-06-03 | 2012-05-09 | 米其林技术公司 | Cable with three layers, rubberised on site, for the framework of a tyre carcass |
Non-Patent Citations (2)
| Title |
|---|
| 曹玉德等: ""18X7+FC(IWS,IWR)钢丝绳生产工艺改进"", 《金属制品》 * |
| 林惜莹等: ""18X7+FC钢丝绳生产工艺改进"", 《金属制品》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104532633A (en) * | 2014-12-24 | 2015-04-22 | 鞍钢钢绳有限责任公司 | Method for controlling shaping rate of steel wire ropes |
| CN107354787A (en) * | 2017-07-22 | 2017-11-17 | 南通松诚实业有限公司 | Friction drive hoist lifting head rope |
| CN114729503A (en) * | 2019-11-15 | 2022-07-08 | 米其林集团总公司 | Double-layer multi-strand cord with a coated inner layer and improved properties |
| CN114729503B (en) * | 2019-11-15 | 2023-07-18 | 米其林集团总公司 | Double layer multi-ply cord with a coated inner layer and improved properties |
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Application publication date: 20140108 |
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| RJ01 | Rejection of invention patent application after publication |