CN103207115A - Overall tensile detection method for wire ropes - Google Patents
Overall tensile detection method for wire ropes Download PDFInfo
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- CN103207115A CN103207115A CN2013100772765A CN201310077276A CN103207115A CN 103207115 A CN103207115 A CN 103207115A CN 2013100772765 A CN2013100772765 A CN 2013100772765A CN 201310077276 A CN201310077276 A CN 201310077276A CN 103207115 A CN103207115 A CN 103207115A
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Abstract
The invention belongs to the field of measurement mechanics and relates to an overall tensile detection method for wire ropes, in particular to overall tensile breaking force detection for large-sized large-diameter wire ropes. 50 times of the diameter phi of a wire rope serves as tensile elongation L, namely L equals 50 phi, two ends of the wire rope are broken up in the range of 6%-7% L, and the largest included angle between the broken position and the axis of the wire rope is 10 DEG; the wire rope is then loaded in a cylindrical mould 7%L in length and 2.0-2.5phi in diameter for preheating, and the wire rope is melted at 183 DEG C using tin lead alloy as a casting medium; after the temperature is held for 20 minutes, the melted tin lead alloy is poured into the mould and is detected after cooling and forming. The requirements of domestic and abroad markets for the overall tensile test on wire ropes are met, and forcible technical support for the industry is provided.
Description
Technical field
The invention belongs to the measurement mechanics field, be specifically related to a kind of wire rope integrally stretching detection method, the whole stretching Fracture Force that especially relates to large scale major diameter wire rope detects, can also be to other product promotions, twisted-pair feeder for example, the Fracture Force of products such as steel strand wires detects.
Background technology
Wire rope is to twist with the fingers into thigh by the multilayer steel wire, centered by wire rope core, twists with the fingers helically wound rope by some thighs again.In material handling machinery, for the usefulness of lifting, traction, tension and carrying.The intensity height of wire rope, from heavy and light, stable working, be difficult for suddenly whole and break reliable operation.The wire rope performance is mainly determined by steel wire.Steel wire be carbon steel or alloy steel by the cold drawn or cold rolling circle that forms (or abnormity) silk material, have very high intensity and toughness, and according to environment for use condition difference steel wire carried out surface treatment.
The aggregate breaking force index is the important symbol that characterizes wire rope quality, security and performance.Yet wire rope is twisted with the fingers by some steel wires and is formed together, does not easily loose with the steel wire pinch off or with wire line clamp when directly not clamping wire rope when stretching detection, can not finish detection.Therefore, must use suitable anchor clamps, if anchor clamps are not suitable for and will cause detecting failure.Because therefore the helical nature of wire rope in the test is difficult in additional any object on the sample.
Therefore, need the anchor clamps of appropriate design, by suitable medium and method wire rope and anchor clamps are fixed, finish detection.
Summary of the invention
The whole stretching detection method of a kind of wire rope that the present invention is directed to following technical matters and propose;
1, clamp-shaped and size design
The anchor clamps diameter is too small, very easily causes wire rope very easily to come off from frock because axial load is excessive; The anchor clamps diameter is excessive, and is limited in one's ability because of the gripping of cupping machine jaw, can't finish experimental duties; Anchor clamps are oversize, and are not easy to operate, are difficult to during casting cast in cast medium in the anchor clamps fully; Anchor clamps are too short, and bond strength is low, the phenomenon that causes wire rope and anchor clamps to come off easily.
2, wire rope angle design
Under normal operation, wire rope termination and anchor clamps angle too small very easily cause coming off, and can't finish experiment; Wire rope termination and axial angle are excessive, cause easily rupturing from the termination.
3, cast medium design
The fusing point of cast medium is low, cast molding easily, but its intensity is low, and anchor clamps are yielding, can not finish experiment; Cast medium fusing point height, its temperature required height of casting, and cause the wire rope tempering easily, intensity descends, and easily causes improper fracture;
Concrete technical scheme is as follows:
A kind of wire rope integrally stretching detection method is chosen 50 times wirerope diameter φ as its tensile elongation L, and namely L=50 Φ breaks in the scope with two end 6%-7%L of wire rope, and breaking the position maximum angle axial with it is 10 °; The diameter of then it being packed into is 2.0～2.5 φ, and length is preheating together in the cylinder mold of 7%L, chooses leypewter as cast medium, with it 183 ℃ of thawings, be incubated 20 minutes, will melt good leypewter at last and be cast in the mould, detect after the moulding to be cooled.
Through mechanical property research, determined that the control of best experiment stress is 20MPa, finally can successfully break wire rope.
Beneficial effect of the present invention
Wire rope not only all has a wide range of applications in civilian industry but also in the defence and military industry, and the quality of its performance is directly connected to the quality of product quality.
The present invention provides strong technical guarantee for numerous Wire Rope Production enterprises and applying unit, and this project can be extended to other Related product such as frock design and the tension test of twisted-pair feeder, accepts an external difficult problem and has done the technology preparation for continuous.Consider wire rope in the widespread use of industrial sectors such as chemical industry, electric power, pottery, automobile, effective popularization of the present invention will play a significant role aspect the production safety of these industries, will produce huge and far-reaching social benefit.
Description of drawings
The present invention has three secondary accompanying drawings
Fig. 1 is construction of wire rope;
Fig. 2 is wire rope anchor clamps synoptic diagram
1-wire rope 2-anchor clamps 3-wire rope is broken the end
Fig. 3 is wire rope tension test figure
Embodiment
Embodiment 1
Be 28.5mm by measuring steel wire rope diameter, choose the wire rope that length is 1425mm, wire rope two ends 85mm scope is broken in design, breaks the position maximum angle axial with it and is designed to 10 °; Choose leypewter as cast medium, it 183 ℃ of thawings, is incubated 20 minutes again, its casting properties the best, then breaking of wire rope partly being poured into diameter rapidly is 60mm, and length is in the cylindrical mould of 100mm, and cooling forming forms anchor clamps.Under experiment stress control 20MPa, successfully wire rope is broken, as shown in Figure 3.
Be 15.5mm by measuring steel wire rope diameter, choose the wire rope that length is 775mm, wire rope two ends 47mm scope is broken in design, breaks the position maximum angle axial with it and is designed to 10 °; Choose leypewter as cast medium, it 183 ℃ of thawings, is incubated 20 minutes again, its casting properties the best, then breaking of wire rope partly being poured into diameter rapidly is 32mm, length is in the cylindrical mould of 55mm.Under experiment stress control 20MPa, successfully wire rope is broken.
Claims (2)
1. wire rope integrally stretching detection method, it is characterized in that: choose 50 times wirerope diameter φ as its tensile elongation L, be L=50 Φ, break in the scope with two end 6%-7%L of wire rope that breaking the position maximum angle axial with it is 10 °; The diameter of then it being packed into is 2.0～2.5 φ, and length is preheating together in the cylinder mold of 7%L, chooses leypewter as cast medium, with it 183 ℃ of thawings, be incubated 20 minutes, will melt good leypewter at last and be cast in the mould, detect after the moulding to be cooled.
2. a kind of wire rope integrally stretching detection method according to claim 1, it is characterized in that: wirerope diameter is 28.5mm, length is 1425mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100772765A CN103207115A (en) | 2013-03-12 | 2013-03-12 | Overall tensile detection method for wire ropes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100772765A CN103207115A (en) | 2013-03-12 | 2013-03-12 | Overall tensile detection method for wire ropes |
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| CN103207115A true CN103207115A (en) | 2013-07-17 |
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| CN2013100772765A Pending CN103207115A (en) | 2013-03-12 | 2013-03-12 | Overall tensile detection method for wire ropes |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103543062A (en) * | 2013-10-21 | 2014-01-29 | 中国人民解放军理工大学 | Method for testing relative elongation of ultrahigh molecular rope by sag method |
| CN105842030A (en) * | 2016-04-13 | 2016-08-10 | 远东电缆有限公司 | Method for testing wire tensile strength |
| CN105928790A (en) * | 2016-07-12 | 2016-09-07 | 攀钢集团研究院有限公司 | Steel strand tensile test method |
| CN106289974A (en) * | 2016-08-11 | 2017-01-04 | 贵州钢绳股份有限公司 | A kind of steel wire rope is double draws attachment means |
| CN106769308A (en) * | 2016-12-19 | 2017-05-31 | 鞍钢钢绳有限责任公司 | The method for preventing overall breaking force of steel wire rope from testing wire rope core fusing when filling head |
| CN106896017A (en) * | 2017-03-28 | 2017-06-27 | 攀钢集团攀枝花钢铁研究院有限公司 | The method of aluminium alloy leakage and the method for testing of breaking force of rope are prevented in a kind of steel wire rope sample preparation |
| CN107687975A (en) * | 2017-07-17 | 2018-02-13 | 中国石油天然气集团公司 | Evaluate the simulation test device and method of logging steel wire stress-corrosion-cracking resistance |
| CN108088748A (en) * | 2017-12-18 | 2018-05-29 | 中国矿业大学 | The steel strand wires pull-out test device and application method of a kind of integral retaining |
| CN110220792A (en) * | 2019-07-12 | 2019-09-10 | 济南文腾试验仪器有限公司 | A kind of 100 tons of tension-torsion equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6385329A (en) * | 1986-09-29 | 1988-04-15 | Toko Tesutatsuku:Kk | Tensile test piece |
| CN102636389A (en) * | 2012-03-31 | 2012-08-15 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for detecting integrally breaking force for steel wire rope |
-
2013
- 2013-03-12 CN CN2013100772765A patent/CN103207115A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6385329A (en) * | 1986-09-29 | 1988-04-15 | Toko Tesutatsuku:Kk | Tensile test piece |
| CN102636389A (en) * | 2012-03-31 | 2012-08-15 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for detecting integrally breaking force for steel wire rope |
Non-Patent Citations (2)
| Title |
|---|
| 季润东: "《钢丝绳的整绳破断试验》", 《煤炭科学技术》, 31 December 1999 (1999-12-31), pages 36 - 37 * |
| 聂瑞华: "《浇铸法测试钢丝绳整绳破断拉力试验方法研究》", 《冶金标准化与质量》, 31 December 1994 (1994-12-31), pages 28 - 33 * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103543062A (en) * | 2013-10-21 | 2014-01-29 | 中国人民解放军理工大学 | Method for testing relative elongation of ultrahigh molecular rope by sag method |
| CN103543062B (en) * | 2013-10-21 | 2016-02-10 | 中国人民解放军理工大学 | A kind of method adopting sag method to test relative elongation of ultrahigh molecular rope |
| CN105842030A (en) * | 2016-04-13 | 2016-08-10 | 远东电缆有限公司 | Method for testing wire tensile strength |
| CN105928790A (en) * | 2016-07-12 | 2016-09-07 | 攀钢集团研究院有限公司 | Steel strand tensile test method |
| CN106289974A (en) * | 2016-08-11 | 2017-01-04 | 贵州钢绳股份有限公司 | A kind of steel wire rope is double draws attachment means |
| CN106769308A (en) * | 2016-12-19 | 2017-05-31 | 鞍钢钢绳有限责任公司 | The method for preventing overall breaking force of steel wire rope from testing wire rope core fusing when filling head |
| 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 |
| CN106896017A (en) * | 2017-03-28 | 2017-06-27 | 攀钢集团攀枝花钢铁研究院有限公司 | The method of aluminium alloy leakage and the method for testing of breaking force of rope are prevented in a kind of steel wire rope sample preparation |
| 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 |
| CN107687975A (en) * | 2017-07-17 | 2018-02-13 | 中国石油天然气集团公司 | Evaluate the simulation test device and method of logging steel wire stress-corrosion-cracking resistance |
| CN108088748A (en) * | 2017-12-18 | 2018-05-29 | 中国矿业大学 | The steel strand wires pull-out test device and application method of a kind of integral retaining |
| CN110220792A (en) * | 2019-07-12 | 2019-09-10 | 济南文腾试验仪器有限公司 | A kind of 100 tons of tension-torsion equipment |
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Application publication date: 20130717 |