CN101725060A - Method for improving and enhancing fatigue performance of large-size sling cable wires - Google Patents
Method for improving and enhancing fatigue performance of large-size sling cable wires Download PDFInfo
- Publication number
- CN101725060A CN101725060A CN200910102847A CN200910102847A CN101725060A CN 101725060 A CN101725060 A CN 101725060A CN 200910102847 A CN200910102847 A CN 200910102847A CN 200910102847 A CN200910102847 A CN 200910102847A CN 101725060 A CN101725060 A CN 101725060A
- Authority
- CN
- China
- Prior art keywords
- steel wire
- wire rope
- cable wires
- fatigue performance
- twisting
- 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.)
- Pending
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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
- D07B1/16—Ropes or cables with an enveloping sheathing or inlays of rubber or plastics
- D07B1/165—Ropes or cables with an enveloping sheathing or inlays of rubber or plastics characterised by a plastic or rubber inlay
-
- 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
- D07B2201/2024—Strands twisted
- D07B2201/2027—Compact winding
- D07B2201/2028—Compact winding having the same lay direction and lay pitch
-
- 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
- D07B2201/2036—Strands characterised by the use of different wires or filaments
- D07B2201/2037—Strands characterised by the use of different wires or filaments regarding the dimension of the wires or filaments
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2207/00—Rope or cable making machines
- D07B2207/40—Machine components
- D07B2207/404—Heat treating devices; Corresponding methods
- D07B2207/4059—Heat treating devices; Corresponding methods to soften the filler material
Abstract
The invention discloses a method for improving and enhancing the fatigue performance of large-size sling cable wires. The sling cable wire has a multi-wire contact structure of a 8*55SWS+R-IWRC filled metal core (independent wire rope core (IWRC), which comprises a metal spiral core and a plurality of outer sections; the number of the outer sections is the same as that of small sections filled in the outer sections; section diameters are different; the metal spiral core is formed by one-time twisting; all the sections are in linear contact; the contact stress of each cable wire is small; modifying plastics are injected into inner gaps of the cable wires; and plastics with high performance are injected into the inner gaps of the cable wires. The technical scheme is beneficial to the corrosion resistance force of the sling cable wires, enhances fatigue resistant force, increases carrying force, has good flexibility, and prolongs the service life.
Description
Technical field
The present invention relates to the metallic article technical field, relate in particular to a kind of method of improving fatigue performance of large-size sling cable wires.
Background technology
Wire rope sling uses the history of existing many decades on large-span suspension bridge, China brings into use before 10 years, but last decade is in basically to stagnate and uses and research state, fast development along with the bridge construction industry, the common concern of using and study the people that get back of wire rope sling, but to the demands for higher performance of wire rope sling.
What the wire rope sling of China used before 10 years is the steel wire rope of 6 * 37 class point-contact junction structures, and intensity level is also lower.The thigh of point-contact lay wire rope is formed by the steel wire layering twisting of same diameter, is the point-like contact between its adjacent layer steel wire.During point-contact lay wire rope work, bear very big compact stress between the steel wire in strand; Steel wire rope is when bending in addition, and steel wire is subjected to addition bend in strand, produces second order buckling stress, makes the point-contact lay wire rope fatigue performance low.The internal voids of the steel wire rope of 6 * 37 class point-contact junction structures is bigger simultaneously, and metal filled coefficient is little, makes the wire rope sling bearing capacity low, is not suitable for the designing requirement that large-span suspension bridge alleviates superstructure weight.
Summary of the invention
The objective of the invention is in order to overcome deficiency of the prior art, a kind of anti-fatigue performance height is provided, activity coefficient and the rupture pull force coefficient is big, bearing capacity is big, corrosion-resistant, flexility is good, improve service life simultaneously, reduce production costs, a kind of method of improving the large-size sling cable fatigue performance of enhancing productivity.
The technical solution adopted in the present invention is:
Rope wire adopts the drawing of Fine Steel Casting iron hot rolling control cold dish bar to produce, and the raw material grade of steel is SWRH82B or SWRS82B, requires the raw material degree of purity to want high, P, S content are not more than 0.025%, sorbitic rate 〉=90%, the contraction percentage of area 〉=38%, decarburized layer deepness is not more than 0.07mm.
The twisting rope wire adopts zinc-plated processing.
The sling cable product structure design is multifibres line contact structures, as 8 * 55SWS+R-IWRC, completely filling formula metal core IWRC is made up of with the outer shallow bid of filling a metal thigh core and Duo Gen outer layer strand, outer layer strand is identical with the outer shallow bid radical of filling, does not wait in the thigh footpath, and the metal core primary twisting forms.These twisting wire rope characteristics are to be line contact between each strand silk, and when steel wire rope was stressed, each steel wire compact stress was less, thereby has improved the steel wire rope fatigue performance, and steel cord structure closely, stablize, improved the steel wire rope bearing capacity.
Steel wire rope adopts the special modified plastic rubber of filling, and twice injection moulding adopted in promptly metal-cored injection moulding, and respectively to core injection moulding of metal thigh and metal core injection moulding, plastics add 30% rubber in plastics with igelite or vinyon.
Steel wire rope is (twisting that comprises metal core) in the twisting process, adopts online intermediate frequency heat treatment, and the IF process temperature guarantees that being advisable to the steel wire rope plastic layer is softening the twisting wire rope structure closely reaches carrying out smoothly of twisting.
The twisting of steel wire rope and thigh is all carried out on basket basket machine, steel wire rope that is twisted into and thigh need twining certain number of turns (more than at least 6 circles) on the traction wheel, guarantee that steel wire rope and thigh are non-slip, guarantee the unanimity of twisting tension force, in steel wire rope and burst twisting process, guarantee that devices such as cable-through hole, Forming die, pre-former, diameter-setting equipment, retractable cable do not block line, do not hinder line.
Twisting wire rope finishes, and adopts pre-stretch-draw stabilization processes, guarantees the stability of steel cord structure, and pre-stretch-draw stabilization processes anchor clamps adopt the manufacturing of 30#-45# medium carbon steel, and do not heat-treat, and guarantee not damage steel wire.
The twisting wire rope characteristics be each strand, thread between be the line contact condition, when steel wire rope was stressed, each steel wire compact stress was less, has improved the steel wire rope fatigue performance, and steel cord structure closely, stable, improved the steel wire rope bearing capacity.
This technical scheme is optimized the structure of sling cable, and the steel wire rope interior metal is filled fully, increases metallic area and bearing capacity; Make the inner compact stress of steel wire rope little, reduce stress fatigue, improve the fatigue performance of wire rope sling.
From strict control of quality requirements such as the drawing of the raw material of sling cable, heat treatment, rope making wire, zincincations, improve the comprehensive mechanical performance of hoist cable rope steel wire.
To in the sling cable twisting technical process technological equipment being carried out strictness control, avoid steel wire rope twisting stress and damage, avoid steel wire rope to produce stress riser; Have the high-performance plastic cement that can alleviate inner compact stress inner injection of steel wire rope simultaneously, improve the fatigue performance of wire rope sling.And the inner plastic cement that injects of steel wire rope can prevent that rainwater from infiltrating the wire rope sling internal voids, being of value to the raising of wire rope sling rust resistance.
To the pre-stretch-draw stabilization processes (another patented technology application) of sling cable, set up the pre-stretch-draw stabilization processes of the Automatic Control production line of large-specification wire rope, eliminate the structural stretch of wire rope sling, improve structural stability.
The specific embodiment:
Details are as follows again for the specific embodiment of a kind of method that improves the large-size sling cable fatigue performance of the present invention:
1, rope wire adopts the drawing of Fine Steel Casting iron hot rolling control cold dish bar to produce, and the raw material grade of steel is SWRH82B or SWRS82B, requires the raw material degree of purity to want high, P, S content are not more than 0.025%, sorbitic rate 〉=90%, the contraction percentage of area 〉=38%, decarburized layer deepness is not more than 0.07mm.
2, the twisting rope wire adopts zinc-plated processing.
3, the sling cable product structure design is multifibres line contact structures, as 8 * 55SWS+R-IWRC, completely filling formula metal core IWRC is made up of with the outer shallow bid of filling a metal thigh core and Duo Gen outer layer strand, outer layer strand is identical with the outer shallow bid radical of filling, does not wait in the thigh footpath, and the metal core primary twisting forms.These twisting wire rope characteristics are to be line contact between each strand silk, and when steel wire rope was stressed, each steel wire compact stress was less, thereby has improved the steel wire rope fatigue performance, and steel cord structure closely, stablize, improved the steel wire rope bearing capacity.
4, steel wire rope adopts the special modified plastic rubber of filling, and twice injection moulding adopted in promptly metal-cored injection moulding, and respectively to core injection moulding of metal thigh and metal core injection moulding, plastics add 30% rubber in plastics with igelite or vinyon.
5, steel wire rope (twisting that comprises metal core) in the twisting process adopts online intermediate frequency heat treatment, and the IF process temperature guarantees that being advisable to the steel wire rope plastic layer is softening the twisting wire rope structure closely reaches carrying out smoothly of twisting.
6, the twisting of steel wire rope and thigh is all carried out on basket basket machine, steel wire rope that is twisted into and thigh need twining certain number of turns (more than at least 6 circles) on the traction wheel, guarantee that steel wire rope and thigh are non-slip, guarantee the unanimity of twisting tension force, in steel wire rope and burst twisting process, guarantee that devices such as cable-through hole, Forming die, pre-former, diameter-setting equipment, retractable cable do not block line, do not hinder line.
7, twisting wire rope finishes, and adopts pre-stretch-draw stabilization processes, guarantees the stability of steel cord structure, and pre-stretch-draw stabilization processes anchor clamps adopt the manufacturing of 30#-45# medium carbon steel, and do not heat-treat, and guarantee not damage steel wire.
Claims (7)
1. method of improving fatigue performance of large-size sling cable wires, it is characterized in that: the structure of sling cable is that multifibres line contact structures 8 * 55SWS+R-IWRC is full of the metal-cored IWRC of formula, by a metal thigh core and Duo Gen outer layer strand, outer layer strand is identical with the outer shallow bid radical of filling, and does not wait in a burst footpath; The metal core primary twisting forms, and is the line contact between each strand silk, and each steel wire compact stress is less; Injecting modification in the steel wire rope internal voids can plastic cement.
2. the method for improving fatigue performance of large-size sling cable wires according to claim 1 is characterized in that: high-performance modified plastic cement is, igelite or vinyon or add 30% rubber in plastics.
3. the method for improving fatigue performance of large-size sling cable wires according to claim 1 is characterized in that: adopt twice injection moulding, respectively to core injection moulding of metal thigh and metal core injection moulding.
4. the method for improving fatigue performance of large-size sling cable wires according to claim 1 is characterized in that: the twisting of steel wire rope, metal core, adopt online intermediate frequency heat treatment, and strand layer is softening is advisable the IF process temperature steel wire rope being moulded.
5. the method for improving fatigue performance of large-size sling cable wires according to claim 1, it is characterized in that: the twisting of steel wire and thigh is all carried out on basket basket machine, the steel wire rope that is twisted into twines on traction wheel with thigh and is no less than 6 circles, guarantees that steel wire rope and thigh are non-slip; Guarantee that cable-through hole, Forming die, pre-former, diameter-setting equipment, take-up and pay-off device do not block line and do not hinder line.
6. the method for improving fatigue performance of large-size sling cable wires according to claim 1, it is characterized in that: adopt pre-stretch-draw stabilization processes behind the twisting wire rope, the anchor clamps of pre-stretch-draw stabilization processes adopt the manufacturing of 30#-40# medium carbon steel, and not heat treatment, guarantee not hinder steel wire.
7. the method for improving fatigue performance of large-size sling cable wires according to claim 1 is characterized in that: the steel wire that the hoist cable steel cable is used adopts zinc-plated processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910102847A CN101725060A (en) | 2009-11-14 | 2009-11-14 | Method for improving and enhancing fatigue performance of large-size sling cable wires |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910102847A CN101725060A (en) | 2009-11-14 | 2009-11-14 | Method for improving and enhancing fatigue performance of large-size sling cable wires |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101725060A true CN101725060A (en) | 2010-06-09 |
Family
ID=42446563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910102847A Pending CN101725060A (en) | 2009-11-14 | 2009-11-14 | Method for improving and enhancing fatigue performance of large-size sling cable wires |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101725060A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103485220A (en) * | 2013-10-15 | 2014-01-01 | 贵州钢绳股份有限公司 | Manufacturing method of high-strength wire rope for traction structure |
| CN103911893A (en) * | 2014-04-14 | 2014-07-09 | 江苏法尔胜技术开发中心有限公司 | Steel wire rope for conveying belt |
| CN104588435A (en) * | 2014-12-28 | 2015-05-06 | 鞍钢钢绳有限责任公司 | Production method of 2000MPa-level microalloying steel wire for producing ropes |
| CN107905008A (en) * | 2017-12-21 | 2018-04-13 | 贵州钢绳股份有限公司 | A kind of composite core cableway steel wire rope and its manufacture method |
| CN108166288A (en) * | 2017-12-26 | 2018-06-15 | 贵州钢绳股份有限公司 | Diameter 35mm cableway steel wire rope production technologies |
| CN108166286A (en) * | 2017-12-26 | 2018-06-15 | 贵州钢绳股份有限公司 | A kind of manned cableway steel wire rope manufacturing method |
| CN108951239A (en) * | 2018-06-07 | 2018-12-07 | 鞍钢钢绳有限责任公司 | A kind of Wire Rope Production method and device with high molecular polymer stick |
-
2009
- 2009-11-14 CN CN200910102847A patent/CN101725060A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103485220A (en) * | 2013-10-15 | 2014-01-01 | 贵州钢绳股份有限公司 | Manufacturing method of high-strength wire rope for traction structure |
| CN103911893A (en) * | 2014-04-14 | 2014-07-09 | 江苏法尔胜技术开发中心有限公司 | Steel wire rope for conveying belt |
| CN104588435A (en) * | 2014-12-28 | 2015-05-06 | 鞍钢钢绳有限责任公司 | Production method of 2000MPa-level microalloying steel wire for producing ropes |
| CN104588435B (en) * | 2014-12-28 | 2017-02-22 | 鞍钢钢绳有限责任公司 | Production method of 2000MPa-level microalloying steel wire for producing ropes |
| CN107905008A (en) * | 2017-12-21 | 2018-04-13 | 贵州钢绳股份有限公司 | A kind of composite core cableway steel wire rope and its manufacture method |
| CN108166288A (en) * | 2017-12-26 | 2018-06-15 | 贵州钢绳股份有限公司 | Diameter 35mm cableway steel wire rope production technologies |
| CN108166286A (en) * | 2017-12-26 | 2018-06-15 | 贵州钢绳股份有限公司 | A kind of manned cableway steel wire rope manufacturing method |
| CN108951239A (en) * | 2018-06-07 | 2018-12-07 | 鞍钢钢绳有限责任公司 | A kind of Wire Rope Production method and device with high molecular polymer stick |
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Application publication date: 20100609 |