CN102636389B - Method for detecting integrally breaking force for steel wire rope - Google Patents
Method for detecting integrally breaking force for steel wire rope Download PDFInfo
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- CN102636389B CN102636389B CN201210091982.0A CN201210091982A CN102636389B CN 102636389 B CN102636389 B CN 102636389B CN 201210091982 A CN201210091982 A CN 201210091982A CN 102636389 B CN102636389 B CN 102636389B
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- wire rope
- mould
- steel wire
- breaking force
- zinc liquid
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Abstract
The invention discloses a method for detecting integrally breaking force for a steel wire rope. The method includes spreading apart two ends of the steel wire rope and cleaning the spread ends by detergent; placing one of the two ends into a mold, filling liquid zinc into the mold and taking out the end after the liquid zinc is solidified; placing the other end into the mold, filling zinc liquid into the mold, taking out the end after the liquid zinc is solidified, and obtaining a steel wire rope test sample with solidified zinc slabs at the ends; and carrying out stretching test for the steel wire rope test sample. The method has the advantages that detection steps can be simplified, detection cost is lowered, and the integral breaking force of the steel wire rope can be increased and is truly reflected effectively.
Description
Technical field
The present invention relates to wire rope Performance Detection technical field, more particularly, relate to a kind of method that accurately can detect overall breaking force of steel wire rope.
Background technology
In the prior art, overall breaking force of steel wire rope test method mainly contains: casting, cover platen press, winding method and direct chucking method four kinds.
The method that casting method the most generally adopts when being and carrying out overall breaking force of steel wire rope test.Typical casting comprises the following steps: scattered at sample two ends, then pours into a mould with molten alloy in mould, and after being cooled to normal temperature, obtained sample to be tested, next puts into specimen holder and carry out tension test by sample to be tested.
But, for prior art, due to adopt molten alloy carry out pouring into a mould and molten alloy need preparation, therefore exist cost high, operate the deficiencies such as loaded down with trivial details.And due to when carrying out overall breaking force of steel wire rope test, requiring that the end of pour mass and wire rope has predetermined bond strength, otherwise easily causing disengaging, and then can not measure or can not accurately measure the whole rope rupture pull force value of wire rope.
Summary of the invention
For prior art above shortcomings, an object of the present invention is to provide a kind of method that accurately can detect overall breaking force of steel wire rope.Another object of the present invention is to provide a kind of have simple to operate, cost is low and testing result detects the method for overall breaking force of steel wire rope accurately.
The invention provides a kind of method detecting overall breaking force of steel wire rope.Said method comprising the steps of: are scattered in two of wire rope ends, with detersive, the end of scattering is cleaned; In described two ends one is positioned among mould, in mould, injects zinc liquid, take out after zinc liquid solidifies; Another in described two ends is positioned among mould, in mould, injects zinc liquid, take out after zinc liquid solidifies, obtain end with the wire rope sample solidifying spelter; Tension test is carried out to wire rope sample.
In one exemplary embodiment of the present invention, the mold cavity bottoms of described mould is provided with for the perforate for steel wire penetrating, and the height of the end of the wire rope be positioned in mould can be made to be less than the degree of depth of dies cavity by described perforate.
In one exemplary embodiment of the present invention, have space below described mould, this space has can make the part except the part being arranged in mould of wire rope without height sagging deviously.
In one exemplary embodiment of the present invention, by the step of tinsel binding wire rope before described method is also included in and is scattered two of wire rope ends, the distance that tinsel bundlees the distance middle part, two ends of wire rope is respectively determined according to the clamping length of grip of testing machine.
In one exemplary embodiment of the present invention, described method also comprise reclaim and melted the sample two ends of tension test solidify spelter, with the step again for pouring into a mould.
Compared with prior art, the method for detection overall breaking force of steel wire rope of the present invention can simplify detecting step, reduces testing cost and can improve overall breaking force of steel wire rope to reflect the whole rope rupture pull force of wire rope more really.
Embodiment
Hereinafter, the method for detection overall breaking force of steel wire rope of the present invention will be described in detail in conjunction with exemplary embodiment.
Method according to detection overall breaking force of steel wire rope of the present invention comprises the following steps: scattered two of wire rope ends, clean with detersive to the end of scattering; In described two ends one is positioned among mould; In mould, inject zinc liquid, lower the temperature zinc liquid is solidified, take out; Another in described two ends is positioned among mould; In mould, inject zinc liquid, lower the temperature zinc liquid is solidified, take out, obtain end with the wire rope sample solidifying spelter; Tension test is carried out to wire rope sample.Here, wire rope sample with the shape of solidifying spelter can for back taper.Here, described detersive can be the organic solvents such as diesel oil, kerosene or alcohol.The method of zinc cast is adopted to simplify detecting step; Spelter can be recycled, and reduces testing cost; Overall breaking force of steel wire rope can also be improved to reflect the whole rope rupture pull force of wire rope more really.
In an exemplary embodiment of the method for detection overall breaking force of steel wire rope of the present invention, the mold cavity bottoms of described mould is provided with for the perforate for steel wire penetrating to be measured, and the height of the end of the wire rope be positioned in mould can be made to be less than the degree of depth of dies cavity by described perforate, thus the phenomenon that the molten metal caused because the height of the wire rope being arranged in mould exceeds mould when pouring into a mould easily flows out can be avoided.Such as, by described perforate by the height control of the end of wire rope that is positioned in mould for be about 3mm ~ 10mm lower than dies cavity height.Here, described perforate can have the aperture coordinated with the external peripheral surface of wire rope bottom with sealed mold.Such as, described perforate aperture can slightly larger than or equal the diameter of wire rope.In addition, described mould can be made up of two lobes of axis direction (also the can be transversal line direction) decile along dies cavity, and this can simplify the operation further.
In addition, described mold bottom also can be provided with card sample element, and described card sample element comprises the connecting portion and clamping head that are connected to each other.Wherein, connecting portion is removably disposed in the bottom outside of mould, such as, by being arranged on the screw thread of connecting portion outside and being arranged on the threaded hole of mold bottom to realize removably connecting of the two; Clamping head clamps wire rope to be measured.Such as, clamping head can be made up of two lobes of axis direction (also the can be transversal line direction) decile along wire rope to be measured, clamping head is formed with the through hole coordinated with wire rope external peripheral surface to be measured, the diameter of through hole can slightly larger than or equal the diameter of wire rope; Connecting portion can be have externally threaded bolt, thus clamping head is connected with the bottom of mould and coordinates to come the described perforate of further sealed mold by clamping head with wire rope to be measured by realization.
In addition, the lower of described mould can have space, and this space has can make the part except the part being arranged in mould of wire rope to be measured without height sagging deviously.When pouring into a mould, wire rope to be measured is made to keep nothing hang deviously, can guarantee that the direction of all steel wires of the wire rope when pouring into a mould is consistent, thus when carrying out the test of whole fracture of rope, all wire rope rupture as far as possible simultaneously, which increase the whole fracture of rope pulling force of wire rope, make the whole fracture of rope value of thrust that detects more accurate.In addition, make wire rope to be measured keep nothing hang deviously, the mould that may cause because of bending of wire rope can also be avoided to topple over, thus further ensure that security.Such as, the requirement in above-mentioned space can be met by arranging a bracing frame below mould.
In another exemplary embodiment of the present invention, before described method can also be included in and to be scattered two of wire rope ends, bundle the step of wire rope along the end of wire rope and the boundary at middle part with tinsel.The length of the end of wire rope is determined according to the clamping length of grip of testing machine.
In another exemplary embodiment of the present invention, described method can also comprise reclaim and melted the sample two ends of tension test solidify spelter, with the step again for pouring into a mould.
Specifically, method of the present invention can also be realized by following mode:
(1) by wire rope two ends (namely, the fag end part that two of wire rope are to be cast, its length is determined according to the clamping length of grip of testing machine) tie and tighten with thin wire, then are scattered in two ends, put into detergent container detersive soak and clean, next, wherein one end is put into the mould that bottom is provided with perforate, and tense wire rope of exerting oneself downwards is to make itself and perforate close contact, and the end-to-end distance die tip making wire rope be arranged in the end of mould is about about 3mm ~ 10mm, the effective length of wire rope sample should meet national standard requirement.Now, wire rope is in nothing hang deviously.Here, when wire rope be core there is the wire rope of the type of fibre core time, should soak before steel cable at use detersive, the fibre core of end to thin wire binding place is cut away.In addition, when the detersive used is unfavorable for follow-up cast (such as, when detersive is the incendivity such as kerosene or diesel oil solvent), after use detersive soaks and cleans wire rope, the end to be cast of cold water or hot water cleaning wire rope can be used.
(2) open high temperature furnace, treat that temperature reaches 710 ± 5 DEG C, spelter is put into, be incubated 10 ~ 30 minutes and become liquid to make spelter.Then, zinc liquid (such as, its temperature can be 450 DEG C) is poured in mould, cable wire end is poured into a mould.
(3), after the zinc liquid of cable wire end becomes solid, take out from mould, and then pour into a mould the other end.
(4), after good cable wire end to be cast becomes normal temperature, tension test can be carried out.
(5) by under the zinc head saw at the wire rope sample two ends after having tested, put into high temperature furnace next time, pull fag end out in time testing, zinc liquid continues to use.
Below, the wire rope of the method for above method and prior art to unlike material and specification is used to carry out whole rope rupture pull force experimental test respectively.
example 1
The specification of 1# wire rope is that 22.0NAT6 × 19+FC1670ZS is important, and its minimum breaking force standard value is 248KN.The whole rope rupture pull force adopting method of the present invention to record is 287KN.
The whole rope rupture pull force of this wire rope using the method for the lead-containing alloy liquid of prior art cast to record is 256KN.
example 2
The specification of 2# wire rope is that 32.0NAT6 × 19W+IWR1770ZS is important, and its minimum breaking force standard value is 645KN.The whole rope rupture pull force adopting method of the present invention to record is 685KN.
The whole rope rupture pull force of this wire rope using the method for the lead-containing alloy liquid of prior art cast to record is 650KN.
In sum, the method for detection overall breaking force of steel wire rope of the present invention can simplify detecting step, reduces testing cost and can improve overall breaking force of steel wire rope to reflect the whole rope rupture pull force of wire rope more really.
Although describe the method for detection overall breaking force of steel wire rope of the present invention above in conjunction with exemplary embodiment, but those of ordinary skill in the art should be clear, when not departing from the spirit and scope that claim limits, various change can be made to above-mentioned exemplary embodiment.
Claims (3)
1. detect a method for overall breaking force of steel wire rope, it is characterized in that, said method comprising the steps of:
Are scattered in two of wire rope ends, with detersive, the end of scattering is cleaned;
Be positioned among mould by described two ends, inject zinc liquid in mould, wherein, described zinc liquid, by within 10 ~ 30 minutes, being obtained in temperature 710 ± 5 DEG C insulation by spelter, takes out after zinc liquid solidifies;
Another in described two ends is positioned among mould, in mould, injects zinc liquid, take out after zinc liquid solidifies, obtain end with the wire rope sample solidifying spelter;
Tension test is carried out to wire rope sample, wherein,
The mold cavity bottoms of described mould is provided with for the perforate for steel wire penetrating, and the height of the end of the wire rope be positioned in mould can be made to be less than the degree of depth of dies cavity by described perforate,
Have space below described mould, this space has can make the part except the part being arranged in mould of wire rope without height sagging deviously.
2. the method for detection overall breaking force of steel wire rope according to claim 1, it is characterized in that, by the step of tinsel binding wire rope before described method is also included in and is scattered two of wire rope ends, the distance that tinsel is bundled in the distance middle part, two ends of wire rope is respectively determined according to the clamping length of grip of testing machine.
3. the method for detection overall breaking force of steel wire rope according to claim 1, is characterized in that, described method also comprise reclaim and melted the wire rope sample two ends of tension test solidify spelter, with the step again for pouring into a mould.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210091982.0A CN102636389B (en) | 2012-03-31 | 2012-03-31 | Method for detecting integrally breaking force for steel wire rope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210091982.0A CN102636389B (en) | 2012-03-31 | 2012-03-31 | Method for detecting integrally breaking force for steel wire rope |
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| CN102636389A CN102636389A (en) | 2012-08-15 |
| CN102636389B true CN102636389B (en) | 2015-07-01 |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103207115A (en) * | 2013-03-12 | 2013-07-17 | 北京北方车辆集团有限公司 | Overall tensile detection method for wire ropes |
| CN103411826B (en) * | 2013-08-09 | 2015-05-27 | 济南大学 | Zero damage multifunctional steel wire rope tension tester fixture |
| CN104006995B (en) * | 2014-05-29 | 2016-09-28 | 扬州大学 | Shaping method of specimen starched only by fiber for scanning microscopy environment |
| CN105699151B (en) * | 2016-04-11 | 2019-02-15 | 贵州大学 | A kind of diameter of section 2-10mm steel wire static stretch sample method for making sample and device |
| CN105842030A (en) * | 2016-04-13 | 2016-08-10 | 远东电缆有限公司 | Method for testing wire tensile strength |
| CN105928790B (en) * | 2016-07-12 | 2019-06-04 | 攀钢集团研究院有限公司 | A kind of steel strand tensile tests method |
| CN106769308B (en) * | 2016-12-19 | 2019-08-20 | 鞍钢钢绳有限责任公司 | The method of wire rope core fusing when preventing overall breaking force of steel wire rope test from filling head |
| CN106918491B (en) * | 2017-03-28 | 2019-11-12 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of rapid prototyping method of overall breaking force of steel wire rope test |
| CN106896017B (en) * | 2017-03-28 | 2020-02-18 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for preventing alloy liquid from leaking in preparation process of steel wire rope sample and method for testing breaking tension of steel wire rope |
| CN106840807B (en) * | 2017-03-28 | 2019-10-22 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of method that the casting conehead of overall breaking force of steel wire rope test is reused |
| CN111607998A (en) * | 2019-02-23 | 2020-09-01 | 中煤第一建设有限公司 | Method for manufacturing steel wire rope head |
| CN110411796A (en) * | 2019-06-28 | 2019-11-05 | 咸阳宝石钢管钢绳有限公司 | A kind of method for making sample convenient for breaking force of rope test |
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