CN104532633A - Method for controlling shaping rate of steel wire ropes - Google Patents
Method for controlling shaping rate of steel wire ropes Download PDFInfo
- Publication number
- CN104532633A CN104532633A CN201410821880.9A CN201410821880A CN104532633A CN 104532633 A CN104532633 A CN 104532633A CN 201410821880 A CN201410821880 A CN 201410821880A CN 104532633 A CN104532633 A CN 104532633A
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- China
- Prior art keywords
- steel wire
- wire rope
- wire ropes
- rope
- deformation rate
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Classifications
-
- 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
- D07B7/027—Postforming of ropes or strands
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B7/00—Details of, or auxiliary devices incorporated in, rope- or cable-making machines; Auxiliary apparatus associated with such machines
- D07B7/02—Machine details; Auxiliary devices
- D07B7/025—Preforming the wires or strands prior to closing
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- Ropes Or Cables (AREA)
Abstract
The invention relates to a method for controlling the shaping rate of steel wire ropes. The method specifically includes the following steps that first, a columnar pre-deformation device is used when the steel wire ropes are combined, and the roller spacing is controlled to be 0.82-0.95 Tlay length, and the deformation rate is controlled to be 94% to 96%; second, the roller spacing of a post-deformation device is controlled to be 6-12Drope diameter, the rolling reduction is evaluated according to 0.8-1.2Drope diameter, and meanwhile setting is conducted in a stair-step progressive decreasing mode according to 10% of the rolling reduction; third, prestretching is conducted on the steel wire ropes three to four times after rope forming according to 20%-50% of the minimum breaking force of the steel wire ropes, and the elastic extending of the steel wire ropes is reduced. According to the technical scheme, the deformation rates of all strands of steel wire ropes tend to be consistent, the deformation evenness between the stranded ropes can be effectively guaranteed, the defects of single-stranded protruding and the like are overcome, the internal stress of the steel wire ropes is eliminated according to the stair progressive decrease straightening law, and thus the steel wire ropes are made flat and straight after being combined; at last, the shaping rate of the steel wire ropes can be effectively controlled, the diameter increase amount of the steel wire ropes is smaller than 1 mm after head cutting is conducted, the end irregularity degree is smaller than 1.5 mm, the stranded ropes are evenly deformed, the stress is consistent, and the service life is prolonged by 20%.
Description
Technical field
The present invention relates to producing technique of steel cable, particularly a kind of control method of wire rope laying rate.
Background technology
Steel wire rope is formed by the coated wire rope core twisting of outer layer strand, has that intensity is high, good springiness, stable working, the feature such as can to run at high speed, be widely used in the fields such as mine, metallurgy, engineering machinery, boats and ships, military project.
Several mass defects mentioned in GB/T5972-2009 " crane rope maintains, safeguards, installs, checks and scraps " national standard, as steel wire rope distortion, caged distortion, wire rope core extrudes or distortion, the increase of local, rope footpath etc., and between all different from during twisting wire rope strand, shaping rate is inconsistent relevant.
Shaping rate is inconsistent, and be embodied directly in strand ectomesoderm steel wire or rope ectomesoderm stock not along the tight coated central core of the screw line that same layer is consistent, in use, each stock is stressed inconsistent for steel wire rope, directly affects wire-rope safety factor and service life.
Shaping rate is consistent, in rope, each stock uniform force is consistent, rope internal stress (being commonly called as " refuting power ") is also little as much as possible, " in stock, in steel wire and steel wire rope, the internal stress of stock reduces; when after releasing institute Constrained; in steel wire rope, steel wire and stock still keep original position ", not loose, the not distortion in caged, after steel cord ends disconnects, there will not be the quality problems such as serious sub-thread outstanding (axial flaw) or strand scatters, wirerope diameter increase (radial defect).
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of control method of wire rope laying rate, and to reach in steel wire rope, strand twisting is even, stress is little, the stressed consistent effect of use procedure.
For achieving the above object, the present invention realizes by the following technical solutions:
A control method for wire rope laying rate, specifically comprises following technique:
1., during steel wire rope stranding, use column pre-former, roll spacing controls at 0.82 ~ 0.95T
the lay pitch; After steel wire rope enters duct ring two circle, intercept each stock successively, the length intercepting strand at least should equal 3 lay pitch, measures action and chord length, calculates deformation rate and action/nominal rope footpath, require that deformation rate controls between 94 ~ 96%, as deformation rate < 94%, contraposition increases the Bent mirror of pre-former slide block, as deformation rate > 96%, contraposition reduces the Bent mirror of pre-former slide block, and each stock deformation rate is reached unanimity.
2. the roll spacing of post-former controls at 6 ~ 12D
rope footpath, drafts is according to 0.8 ~ 1.2D
rope footpathvalue, simultaneously by the stepped setting of successively decreasing of 10% lapse rate, eliminates twist stress in strand gradually, and after making steel wire rope crop, each stock extension reaches unanimity.
3. by 20% ~ 50% steel wire rope minimum Fracture Force, steel wire rope is carried out to the predraft of 3 ~ 4 times after becoming rope, reduce steel wire rope elastic extension, steel wire rope internal stress is eliminated in stretch-draw, reduces steel wire rope crop rearward end diameter increase.
Compared with prior art, the invention has the beneficial effects as follows:
Technical scheme of the present invention makes each stock deformation rate reach unanimity, and effectively can to ensure between strand that distortion evenly, and do not produce the defects such as sub-thread is outstanding, eliminate steel wire rope internal stress by stairway degression aligning rule, after making conjunction rope, steel wire rope is straight.Finally make wire rope laying rate obtain effectively to control, after steel wire rope crop, diameter increase is less than 1mm; End unevenness degree is less than 1.5mm, and evenly, unanimously stressed, service life improves 20% in strand distortion.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further described:
Embodiment 1
For 6*25Fi+FC-40mm steel wire rope, the control method of wire rope laying rate, specifically comprises following technique:
1., during steel wire rope stranding, use column pre-former, roll spacing is set to 0.9T
the lay pitch=0.9*260=234mm, setting deformation rate, i.e. strand action/nominal rope footpath is between 94 ~ 96%, after steel wire rope enters duct ring two circle, get one section of strand (at least 3 lay pitch), measure action, convert, if meet setting value requirement, intercept other stocks successively and measure, if defective, then contraposition adjustment steel wire rope pre-former bends, as deformation rate < 94%, Bent mirror 1 ~ 2mm that contraposition increases pre-former slide block finely tunes, until deformation rate meets the demands; As deformation rate > 96%, Bent mirror 1 ~ 2mm that contraposition reduces pre-former slide block finely tunes, and ensures that deformation rate meets the demands.
2. the roll spacing adjusted value=7.5D of post-former
rope footpath=7.5*40=300mm, drafts is according to 0.8 ~ 1.2D
rope footpathvalue, i.e. 32 ~ 48mm, simultaneously by the stepped setting of successively decreasing of 10% drafts, after 4, deforming press roll drafts is respectively 35mm, 31.5mm, 28.5mm, 25.5mm, eliminates twist stress in strand gradually, and after making steel wire rope crop, each stock extension reaches unanimity.
3., to steel wire rope three predrafts after becoming to restrict, technological parameter sees the following form
| Sequence number | Predraft number of times | Stretching force | The stretch-draw time |
| 1 | First time stretch-draw | The minimum Fracture Force of 20% steel wire rope | 10min |
| 2 | Second time stretch-draw | The minimum Fracture Force of 30% steel wire rope | 12min |
| 3 | Third time stretch-draw | The minimum Fracture Force of 35% steel wire rope | 15min |
Embodiment 2
For 6*37S+FC-32mm steel wire rope, the control method of wire rope laying rate, specifically comprises following technique:
1., during steel wire rope stranding, use column pre-former, roll spacing is set to 0.9T
the lay pitch=0.9*224=201mm, setting deformation rate, i.e. strand action/nominal rope footpath is between 94 ~ 96%, after steel wire rope enters duct ring two circle, get one section of strand (at least 3 lay pitch), measure action, convert, if meet setting value requirement, intercept other stocks successively and measure, if defective, then contraposition adjustment steel wire rope pre-former bends, as deformation rate < 94%, Bent mirror 1 ~ 2mm that contraposition increases pre-former slide block finely tunes, until deformation rate meets the demands; As deformation rate > 96%, Bent mirror 1 ~ 2mm that contraposition reduces pre-former slide block finely tunes, and ensures that deformation rate meets the demands.
2. the roll spacing adjusted value=7.5D of post-former
rope footpath=7.5*32=240mm, drafts is according to 0.8 ~ 1.2D
rope footpathvalue, i.e. 32 ~ 48mm, simultaneously by the stepped setting of successively decreasing of 10% drafts, after 4, deforming press roll drafts is respectively 32mm, 29mm, 26mm, 23.5mm, eliminates twist stress in strand gradually, and after making steel wire rope crop, each stock extension reaches unanimity.
3., to steel wire rope three predrafts after becoming to restrict, technological parameter sees the following form
| Sequence number | Predraft number of times | Stretching force | The stretch-draw time |
| 1 | First time stretch-draw | The minimum Fracture Force of 20% steel wire rope | 10min |
| 2 | Second time stretch-draw | The minimum Fracture Force of 35% steel wire rope | 15min |
| 3 | Third time stretch-draw | The minimum Fracture Force of 35% steel wire rope | 15min |
Embodiment 3
For 8*36WS+FC-36mm steel wire rope, the control method of wire rope laying rate, specifically comprises following technique:
1., during steel wire rope stranding, use column pre-former, roll spacing is set to 0.9T
the lay pitch=0.9*234=210.6mm, setting deformation rate, i.e. strand action/nominal rope footpath is between 94 ~ 96%, after steel wire rope enters duct ring two circle, get one section of strand (at least 3 lay pitch), measure action, convert, if meet setting value requirement, intercept other stocks successively and measure, if defective, then contraposition adjustment steel wire rope pre-former bends, as deformation rate < 94%, Bent mirror 1 ~ 2mm that contraposition increases pre-former slide block finely tunes, until deformation rate meets the demands; As deformation rate > 96%, Bent mirror 1 ~ 2mm that contraposition reduces pre-former slide block finely tunes, and ensures that deformation rate meets the demands.
2. the roll spacing adjusted value=7.5D of post-former
rope footpath=7.5*36=270mm, drafts is according to 0.8 ~ 1.2D
rope footpathvalue, i.e. 32 ~ 48mm, simultaneously by the stepped setting of successively decreasing of 10% drafts, after 4, deforming press roll drafts is 38mm, 34.2mm, 31mm, 28mm respectively, eliminates twist stress in strand gradually, and after making steel wire rope crop, each stock extension reaches unanimity.
3., to steel wire rope three predrafts after becoming to restrict, technological parameter sees the following form
| Sequence number | Predraft number of times | Stretching force | The stretch-draw time |
| 1 | First time stretch-draw | The minimum Fracture Force of 20% steel wire rope | 10min |
| 2 | Second time stretch-draw | The minimum Fracture Force of 30% steel wire rope | 15min |
| 3 | Third time stretch-draw | The minimum Fracture Force of 30% steel wire rope | 20min |
Following examples describe the present invention.These embodiments are only be described optimum implementation of the present invention, do not limit scope of the present invention.
Claims (1)
1. a control method for wire rope laying rate, is characterized in that, specifically comprises following technique:
1), during steel wire rope stranding, use column pre-former, roll spacing controls at 0.82 ~ 0.95T
the lay pitch; After steel wire rope enters duct ring two circle, intercept each stock successively, the length intercepting strand at least should equal 3 lay pitch, measures action and chord length, calculates deformation rate and action/nominal rope footpath, require that deformation rate controls between 94 ~ 96%, as deformation rate < 94%, contraposition increases the Bent mirror of pre-former slide block, as deformation rate > 96%, contraposition reduces the Bent mirror of pre-former slide block, and each stock deformation rate is reached unanimity.
2) roll spacing of post-former controls at 6 ~ 12D
rope footpath, drafts is according to 0.8 ~ 1.2D
rope footpathvalue, simultaneously by the stepped setting of successively decreasing of 10% drafts, eliminates twist stress in strand gradually, and after making steel wire rope crop, each stock extension reaches unanimity.
3) Cheng Shenghou carries out the predraft of 3 ~ 4 times to steel wire rope by the minimum Fracture Force of 20% ~ 50% steel wire rope, reduces steel wire rope elastic extension, and steel wire rope internal stress is eliminated in stretch-draw, reduces steel wire rope crop rearward end diameter increase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410821880.9A CN104532633A (en) | 2014-12-24 | 2014-12-24 | Method for controlling shaping rate of steel wire ropes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410821880.9A CN104532633A (en) | 2014-12-24 | 2014-12-24 | Method for controlling shaping rate of steel wire ropes |
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| Publication Number | Publication Date |
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| CN104532633A true CN104532633A (en) | 2015-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410821880.9A Pending CN104532633A (en) | 2014-12-24 | 2014-12-24 | Method for controlling shaping rate of steel wire ropes |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107735526A (en) * | 2015-06-26 | 2018-02-23 | 特线工业株式会社 | Operation is restricted |
| CN109338772A (en) * | 2018-11-08 | 2019-02-15 | 武汉钢铁有限公司 | A kind of multilayered structure superhigh intensity galvanized strand wires twisting forming production process |
Citations (6)
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| CN2769310Y (en) * | 2004-07-28 | 2006-04-05 | 咸阳石油钢管钢绳有限责任公司 | Predeforming device for wirerope twisting |
| CN201106133Y (en) * | 2007-09-03 | 2008-08-27 | 咸阳石油钢管钢绳有限责任公司 | Large format horizontal adjustable predeformation device for entwisting wire cable |
| CN101922123A (en) * | 2009-06-09 | 2010-12-22 | 鞍钢钢绳有限责任公司 | Method for pre-deforming steel wire rope |
| CN103498356A (en) * | 2013-10-14 | 2014-01-08 | 无锡通用钢绳有限公司 | Technology for producing 18*7+FC steel wire rope |
| CN103498362A (en) * | 2013-10-14 | 2014-01-08 | 无锡通用钢绳有限公司 | Technology for producing 6*31WS-PWRC-14 micro-rotation steel wire rope |
| CN104088178A (en) * | 2014-07-23 | 2014-10-08 | 贵州钢绳股份有限公司 | Steel wire rope manufactured by forging and compacting multi-ply inner layer rope and manufacturing method of steel wire rope |
-
2014
- 2014-12-24 CN CN201410821880.9A patent/CN104532633A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2769310Y (en) * | 2004-07-28 | 2006-04-05 | 咸阳石油钢管钢绳有限责任公司 | Predeforming device for wirerope twisting |
| CN201106133Y (en) * | 2007-09-03 | 2008-08-27 | 咸阳石油钢管钢绳有限责任公司 | Large format horizontal adjustable predeformation device for entwisting wire cable |
| CN101922123A (en) * | 2009-06-09 | 2010-12-22 | 鞍钢钢绳有限责任公司 | Method for pre-deforming steel wire rope |
| CN103498356A (en) * | 2013-10-14 | 2014-01-08 | 无锡通用钢绳有限公司 | Technology for producing 18*7+FC steel wire rope |
| CN103498362A (en) * | 2013-10-14 | 2014-01-08 | 无锡通用钢绳有限公司 | Technology for producing 6*31WS-PWRC-14 micro-rotation steel wire rope |
| CN104088178A (en) * | 2014-07-23 | 2014-10-08 | 贵州钢绳股份有限公司 | Steel wire rope manufactured by forging and compacting multi-ply inner layer rope and manufacturing method of steel wire rope |
Non-Patent Citations (2)
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107735526A (en) * | 2015-06-26 | 2018-02-23 | 特线工业株式会社 | Operation is restricted |
| CN109338772A (en) * | 2018-11-08 | 2019-02-15 | 武汉钢铁有限公司 | A kind of multilayered structure superhigh intensity galvanized strand wires twisting forming production process |
| CN109338772B (en) * | 2018-11-08 | 2022-01-18 | 武汉钢铁有限公司 | Twisting forming production method for multilayer-structure ultrahigh-strength galvanized steel strand |
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Application publication date: 20150422 |
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