CN115629030A - Anchor cable dry-wet cycle corrosion test device and method - Google Patents
Anchor cable dry-wet cycle corrosion test device and method Download PDFInfo
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- CN115629030A CN115629030A CN202210877236.8A CN202210877236A CN115629030A CN 115629030 A CN115629030 A CN 115629030A CN 202210877236 A CN202210877236 A CN 202210877236A CN 115629030 A CN115629030 A CN 115629030A
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- 238000012360 testing method Methods 0.000 title claims abstract description 103
- 238000005260 corrosion Methods 0.000 title claims abstract description 55
- 230000007797 corrosion Effects 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000000243 solution Substances 0.000 claims abstract description 35
- 230000005540 biological transmission Effects 0.000 claims abstract description 31
- 239000007788 liquid Substances 0.000 claims abstract description 25
- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 230000000149 penetrating effect Effects 0.000 claims abstract description 18
- 238000002347 injection Methods 0.000 claims abstract description 14
- 239000007924 injection Substances 0.000 claims abstract description 14
- 238000009423 ventilation Methods 0.000 claims abstract description 13
- 238000005070 sampling Methods 0.000 claims abstract description 9
- 238000011161 development Methods 0.000 claims abstract description 5
- 238000005303 weighing Methods 0.000 claims abstract description 4
- 239000002390 adhesive tape Substances 0.000 claims description 8
- 239000000565 sealant Substances 0.000 claims description 6
- 125000004122 cyclic group Chemical group 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 description 14
- 230000008569 process Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 239000003518 caustics Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
- G01N17/006—Investigating resistance of materials to the weather, to corrosion, or to light of metals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/04—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
Abstract
The invention discloses a dry-wet cycle corrosion test device and a method for an anchor cable, which comprises a test platform, a transmission mechanism and a rotary drum; the transmission mechanism and the rotary drum are installed on the test platform, and the transmission mechanism drives the rotary drum to rotate. The rotary drum is a rotatable drum with end covers at two ends, a plurality of ventilation liquid injection holes are formed in the middle of each end cover, and a plurality of anchor cable sample perforation holes are formed at intervals close to the outer edge of each end cover; the anchor rope sample penetrates through the anchor rope sample perforation on the end cover from one end of the rotary drum and penetrates out from the other end of the rotary drum, the corrosive solution is injected into the rotary drum through the ventilation liquid injection hole, and the liquid level of the corrosive solution in the rotary drum is higher than the lowest anchor rope sample penetrating in the rotary drum. The anchor cable sample penetrating through the rotary drum is in a state of being blown dry and soaked for alternate replacement while being circularly corroded by the corrosion solution in sequence by rotating the rotary drum, and then the corroded anchor cable sample is subjected to cutting, measuring, weighing and other treatment according to plan sampling, so that the corrosion characteristics and the development trend of the anchor cable sample are obtained.
Description
Technical Field
The invention relates to a dry-wet cycle corrosion test device and method for an anchor cable, and belongs to the technical field of engineering material tests.
Background
The metal dry-wet cycle corrosion test is derived from metal atmospheric corrosion research. The atmospheric corrosion of metal refers to that the metal is put in a corrosive substance, and the corrosive substance is attached to the surface of the metal for a certain time under the rainfall or humid natural environment, and the corrosion of the metal is observed. At present, there are many methods for researching metal atmospheric corrosion, such as salt spray test, wet and hot corrosion test, corrosion paste test, gas corrosion test, dry and wet cycle corrosion test, etc.
The metal dry-wet cycle corrosion test can be understood as simulating the cyclic process of forming the corrosion solution on the metal surface and evaporating the water in the corrosion solution, and observing the corrosion condition of the metal surface in the process. The metal dry-wet cycle corrosion test method is based on a cycle test device capable of working stably for a long time, and realizes the cycle process of wetting the metal by a corrosion solution and drying the metal in the air under a specified dry-wet ratio.
At present, the metal dry-wet cycle corrosion test is widely used in corrosion research of various materials, but has not been applied in anchor cable corrosion research because: due to the particularity of the anchor cable structure, no device suitable for the dry-wet cycle corrosion test of the anchor cable exists at present, and the dry-wet cycle corrosion test of the anchor cable cannot be carried out.
Disclosure of Invention
In view of the above, the present invention aims to provide a dry-wet cycle corrosion test device and method for an anchor cable. The test device can automatically realize dry-wet cycle corrosion on the anchor cable, and has the advantages of simple structure and easy maintenance.
In order to achieve the purpose, the invention provides the following technical scheme: an anchor cable dry-wet cycle corrosion test device comprises a test platform, a transmission mechanism and a rotary drum; the transmission mechanism and the rotary drum are arranged on the test platform, and the transmission mechanism drives the rotary drum to rotate;
the rotary drum is a rotatable drum with end covers at two ends, a rotating shaft mounting hole is formed in the center of each end cover, a plurality of ventilation liquid injection holes are formed in the middle of each end cover, and a plurality of anchor cable sample through holes are formed at intervals close to the outer edge of each end cover; and the anchor cable test sample penetrates through the anchor cable test sample through hole on the end cover from one end of the rotary drum to the other end, the corrosive solution is injected into the rotary drum through the ventilation injection hole, and the liquid level of the corrosive solution in the rotary drum is lower than the lowest anchor cable test sample penetrating in the rotary drum.
Preferably, the transmission mechanism comprises a stepping motor and a controller thereof, a transmission belt and a rotating shaft; the rotating shaft penetrates through the rotating drum along the axis of the rotating drum through the rotating shaft mounting hole and is fixedly connected with the rotating drum, and two ends of the rotating shaft are fixed on the support of the test platform through bearings; the rotating shaft is connected with the output shaft of the stepping motor through the transmission belt.
Preferably, the anchor cable dry-wet cycle corrosion test device is provided with a drainage hole at the outer edge close to the end cover, and a hole plug is plugged in the drainage hole.
Preferably, a sealant is filled between the anchor cable test sample and the anchor cable test sample perforation.
A method for performing dry-wet cyclic corrosion test on an anchor cable by using the anchor cable dry-wet cyclic corrosion test device comprises the following steps:
step 1: installing a rotary drum penetrating through a rotary shaft on a support of a test platform, fixing a stepping motor on a table top of the test platform, and connecting the rotary shaft with an output shaft of the stepping motor through a transmission belt;
step 2: setting the number of anchor cable samples penetrating through the rotary drum, penetrating the anchor cable samples through the rotary drum, filling a gap between the anchor cable samples and anchor cable sample through holes with sealant, and plugging redundant anchor cable sample through holes with waterproof adhesive tapes;
and 3, step 3: plugging a liquid discharge hole of the rotary drum, and then injecting the prepared corrosive solution into the rotary drum through a ventilation liquid injection hole of the rotary drum to ensure that the corrosive solution is submerged in the anchor cable sample perforation at the lowest part of the rotary drum;
and 4, step 4: setting the rotation angle and time of the stepping motor according to the dry-wet time length ratio of the test, and controlling the time length of a dry-wet cycle period of the anchor cable sample;
and 5: switching on a power supply, starting the stepping motor, and performing a corrosion test;
step 6: sampling according to the dry-wet time length ratio of the test, and plugging the anchor cable sample perforation by using a waterproof adhesive tape after sampling; cutting, measuring and weighing the corroded anchor cable sample as required to obtain the corrosion characteristics and development trend of the corroded anchor cable sample;
and 7: and (4) completing the test, removing the hole plug, discharging the corrosive solution in the rotary drum completely, and cleaning and drying the test instrument.
The invention has the advantages that: the anchor cable corrosion test device is simple in structure, can realize a corrosion test under the dry-wet cycle condition of the anchor cable, and obtains the corrosion characteristics and the material structure development and change trend of the anchor cable.
Drawings
FIG. 1 is a schematic structural diagram of an anchor cable dry-wet cycle corrosion test device according to the present invention;
FIG. 2 is a schematic view of the structure of the drum of the present invention;
FIG. 3 is a schematic view of the internal structure of the drum according to the present invention;
FIG. 4 is a schematic view of the interior of the drum according to the present invention;
FIG. 5 is a schematic view of a partial structure of a drum according to the present invention;
FIG. 6 is a schematic structural diagram of a test platform according to the present invention;
FIG. 7 is a schematic view of a rotating shaft structure according to the present invention;
FIG. 8 is a schematic view of the transmission part of the step motor of the present invention;
FIG. 9 is a schematic view of the connection structure between the transmission parts of the stepping motor for rotating shafts of the rotating drum according to the present invention;
FIG. 10 is a side view of the installation of the drum of the present invention.
Wherein:
1. the device comprises a test platform 11, a bracket 111, a rotating shaft mounting hole 12 and a table top; 2. the transmission mechanism 21, the stepping motor 211 and the output shaft of the stepping motor; 22. a transmission belt 221 and a belt pulley; 23. a rotating shaft 231, a bearing 232 and a belt pulley; 3. a drum, 31, a drum end cover; 311. a rotating shaft mounting hole 312, a ventilation liquid injection hole 313, an anchor cable test piece perforation 314, a liquid discharge hole 315 and a hole plug; 4. an anchor cable test piece, 41, a lowest anchor cable test piece; 5. etching solution, 51, etching solution liquid level.
Detailed Description
The structure and features of the present invention will be described in detail below with reference to the accompanying drawings and examples. It should be noted that various modifications can be made to the embodiments disclosed herein, and therefore, the embodiments disclosed in the specification should not be construed as limiting the present invention, but merely as exemplifications of embodiments thereof, which are intended to make the features of the present invention obvious.
In order to simulate the dry-wet cycle corrosion test conditions of the anchor cable test piece, as shown in fig. 1, the anchor cable dry-wet cycle corrosion test device disclosed by the invention comprises a test platform 1, a transmission mechanism 2 and a rotary drum 3; transmission mechanism 2 and rotary drum 3 are installed on test platform 1, and transmission mechanism 2 drives rotary drum 3 rotatory.
As shown in fig. 2-5, the bowl 3 is a rotatable drum with end caps 31 at both ends. The center of the end cover 31 is provided with a rotating shaft mounting hole 311, the middle of the end cover 31 is provided with a plurality of ventilation liquid injection holes 312, the outer edge close to the end cover 31 is provided with a plurality of anchor cable sample perforation holes 313 at intervals, the outer edge close to the end cover 31 is also provided with a liquid discharge hole 314, and a hole plug 315 is plugged in the liquid discharge hole.
The anchor cable test sample 4 penetrates into the end of the rotary drum 3 through the anchor cable test sample through hole 313 in the end cover and then penetrates out of the other end of the rotary drum 3, the corrosive solution 5 is injected into the rotary drum 3 through the air injection hole 312, and the liquid level 51 of the corrosive solution in the rotary drum is lower than the lowest anchor cable test sample 41 penetrating in the rotary drum 3.
Starting the transmission mechanism 2 to drive the rotary drum 3 to rotate, and corroding anchor cable samples 4 penetrating the rotary drum 3 by a corrosive solution 5 at the bottom in the rotary drum in sequence; meanwhile, air is blown into the rotary drum 3 from the ventilation liquid injection hole 312 of the end cover at one side of the rotary drum and blown out from the ventilation liquid injection hole 312 on the end cover at the other side of the rotary drum, and the anchor cable samples 4 penetrating in the rotary drum 3 are in a state of being blown dry and soaked for alternate replacement while being circularly corroded by the corrosive solution 5 along with the rotation of the rotary drum 3.
In the test, when the anchor cable sample 4 is positioned above the corrosive solution 5 and is in a ventilated environment, the anchor cable sample is in a natural dry state, namely a dry state called in the test condition; when the anchor cable sample 4 rotates along with the rotary drum 3 and is soaked by the corrosive solution 5 at the bottom of the rotary drum, the anchor cable sample 4 is in a wet state.
In the test process, after the anchor cable sample 4 penetrates through the anchor cable sample through hole 313, a sealant is needed to fill a gap between the anchor cable sample 4 and the anchor cable sample through hole 313, so that the corrosive solution 5 is prevented from leaking. When the anchor cable sample 4 is drawn out or reduced, the anchor cable sample through hole 313 needs to be plugged by waterproof adhesive tape in time to prevent corrosive solution from leaking.
As shown in fig. 6, a bracket 11 is disposed on the testing platform 1 of the present invention, and a rotating shaft mounting hole 111 is disposed at the top of the bracket 11. The rotary drum 3 with the rotating shaft 23 is arranged on the bracket 11 in a penetrating way, and the transmission mechanism 2 is fixed on the table-board 12 of the test platform.
As shown in fig. 7-10, in the preferred embodiment of the present invention, the transmission mechanism 2 includes a stepping motor and its controller 21, a transmission belt 22 and a rotating shaft 23. The rotating shaft 23 passes through the rotating drum 3 along the axis of the rotating drum 3 and is fixedly connected with the rotating drum 3, and two ends of the rotating shaft 23 are fixed on the test platform support 11 through a bearing 231 and a rotating shaft mounting hole 111 at the top end of the support.
A belt pulley 232 is also arranged at the end part of the rotating shaft 23; a belt pulley 221 is coaxially connected with the output shaft of the stepping motor at the end of the output shaft 211 of the stepping motor, and a transmission belt 22 is sleeved on the belt pulley 232 at the end of the rotating shaft and the belt pulley 221 at the end of the output shaft of the stepping motor. The stepping motor 21 drives the rotating shaft 23 to rotate through the transmission belt 22, and further drives the rotary drum 3 to rotate, so that the anchor cable test piece 4 penetrating through the rotary drum 3 is corroded by dry and wet circulation.
During the dry-wet cycle corrosion test of the anchor cable test piece, the rotation angle and the time interval of the stepping motor can be designed according to the test requirements, namely the length and the time interval of the anchor cable test piece which is circularly dried, soaked and corroded, dried again and soaked and corroded again, so that the length of a dry-wet cycle period of the anchor cable test piece 4 is controlled.
As shown in fig. 2, the number of anchor cable sample perforations 313 on the drum 3 can be adjusted according to the dry-wet length ratio of the dry-wet cycle corrosion test, so as to realize tests with different drying time and soaking time ratios; the number of the anchor cable samples 4 can also be adjusted according to the dry-wet length ratio of the dry-wet cycle corrosion test. When the anchor cable sample 4 is reduced, the spare anchor cable sample is punched and sealed by the waterproof adhesive tape, and the corrosive solution is prevented from leaking. In the test process, sampling is carried out on the anchor cable sample 4 at different times according to the corrosion time requirement, and after sampling, the orifice is plugged in time.
The invention is provided with a liquid discharge hole 314 on the rotary drum 3, and the function of the invention is to discharge the corrosive solution 5 in the rotary drum after the test is finished.
The method for performing the dry-wet cycle corrosion test on the anchor cable by using the test device comprises the following steps:
step 1: installing the rotary drum 3 with the rotary shaft 23 in a penetrating way on the support 11 of the test platform 1, fixing the stepping motor 21 on the table top 12 of the test platform 1, and connecting the rotary shaft 23 with the output shaft of the stepping motor through a transmission belt 22;
step 2: setting the number of anchor cable samples 4 penetrating the rotary drum 3, penetrating the anchor cable samples 4 on the rotary drum 3, filling a gap between the anchor cable samples and anchor cable sample through holes with sealant, and plugging redundant anchor cable sample through holes with waterproof adhesive tapes;
and step 3: plugging a liquid discharge hole of the rotary drum 3, and then injecting the prepared corrosive solution into the rotary drum 3 through a ventilation liquid injection hole of the rotary drum to enable the corrosive solution to submerge through an anchor cable test sample perforation at the lowest part of the rotary drum;
and 4, step 4: setting the rotation angle and time of the stepping motor according to the dry-wet time length ratio of the test, and controlling the time length of a dry-wet cycle period of the anchor cable sample;
and 5: switching on a power supply, starting the stepping motor, and performing a corrosion test;
step 6: sampling according to the dry-wet time length ratio of the test, and plugging the anchor cable sample perforation by using a waterproof adhesive tape after sampling; cutting, measuring, weighing and the like the corroded anchor cable sample as required to obtain the corrosion characteristics and the development trend of the corroded anchor cable sample;
and 7: and (4) completing the test, removing the hole plug, discharging the corrosive solution in the rotary drum completely, and cleaning and drying the test instrument.
Finally, it should be noted that: the above-mentioned embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (5)
1. The utility model provides an anchor rope dry-wet cycle corrosion test device which characterized in that: the device comprises a test platform, a transmission mechanism and a rotary drum; the transmission mechanism and the rotary drum are arranged on the test platform, and the transmission mechanism drives the rotary drum to rotate;
the drum is a rotatable drum with end covers at two ends, a rotating shaft mounting hole is formed in the center of each end cover, a plurality of ventilation liquid injection holes are formed in the middle of each end cover, and a plurality of anchor cable sample through holes are formed at intervals close to the outer edge of each end cover; and the anchor cable test sample penetrates through the anchor cable test sample through hole on the end cover from one end of the rotary drum to the other end, the corrosive solution is injected into the rotary drum through the ventilation injection hole, and the liquid level of the corrosive solution in the rotary drum is lower than the lowest anchor cable test sample penetrating in the rotary drum.
2. The anchor cable dry-wet cycle corrosion test device of claim 1, wherein: the transmission mechanism comprises a stepping motor and a controller thereof, a transmission belt and a rotating shaft;
the rotating shaft penetrates through the rotating drum through the rotating shaft mounting hole along the axis of the rotating drum and is fixedly connected with the rotating drum, and two ends of the rotating shaft are fixed on a bracket of the test platform through bearings;
the rotating shaft is connected with the output shaft of the stepping motor through the transmission belt.
3. The anchor cable dry-wet cycle corrosion test device of claim 2, wherein: and a liquid discharge hole is formed in the outer edge close to the end cover, and a hole plug is plugged in the liquid discharge hole.
4. The anchor cable dry-wet cycle corrosion test device of claim 3, wherein: and sealant is filled between the anchor cable test sample and the anchor cable test sample perforation.
5. A method for performing dry-wet cyclic corrosion test on an anchor cable by using the dry-wet cyclic corrosion test device for the anchor cable according to claims 1-4, which is characterized in that: it comprises the following steps:
step 1: mounting a rotary drum penetrating through a rotary shaft on a support of a test platform, fixing a stepping motor on a table top of the test platform, and connecting the rotary shaft with an output shaft of the stepping motor through a transmission belt;
step 2: setting the number of anchor cable samples penetrating through the rotary drum, penetrating the anchor cable samples through the rotary drum, filling a gap between the anchor cable samples and anchor cable sample through holes with sealant, and plugging redundant anchor cable sample through holes with waterproof adhesive tapes;
and step 3: plugging a liquid discharge hole of the rotary drum, and then injecting the prepared corrosive solution into the rotary drum through a ventilation liquid injection hole of the rotary drum to ensure that the corrosive solution is submerged in the anchor cable sample perforation at the lowest part of the rotary drum;
and 4, step 4: setting the rotation angle and time of the stepping motor according to the dry-wet time length ratio of the test, and controlling the time length of a dry-wet cycle period of the anchor cable sample;
and 5: switching on a power supply, starting the stepping motor, and performing a corrosion test;
step 6: sampling according to the dry-wet time length ratio of the test, and plugging the anchor cable sample perforation by using a waterproof adhesive tape after sampling; cutting, measuring and weighing the corroded anchor cable sample as required to obtain the corrosion characteristics and development trend of the corroded anchor cable sample;
and 7: and (4) completing the test, removing the hole plug, discharging the corrosive solution in the rotary drum completely, and cleaning and drying the test instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210877236.8A CN115629030A (en) | 2022-07-25 | 2022-07-25 | Anchor cable dry-wet cycle corrosion test device and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210877236.8A CN115629030A (en) | 2022-07-25 | 2022-07-25 | Anchor cable dry-wet cycle corrosion test device and method |
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| CN115629030A true CN115629030A (en) | 2023-01-20 |
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| CN202210877236.8A Pending CN115629030A (en) | 2022-07-25 | 2022-07-25 | Anchor cable dry-wet cycle corrosion test device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117147423A (en) * | 2023-10-26 | 2023-12-01 | 江苏亚星锚链股份有限公司 | Marine mooring chain corrosion test device |
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Effective date of registration: 20230828 Address after: 430010 No.1, Liuhe Road, Jiang'an District, Wuhan City, Hubei Province Applicant after: CHINA THREE GORGES Corp. Applicant after: China Three Gorges Construction Engineering (Group) Co.,Ltd. Applicant after: China Institute of Water Resources and Hydropower Research Address before: 430010 No.1, Liuhe Road, Jiang'an District, Wuhan City, Hubei Province Applicant before: CHINA THREE GORGES Corp. Applicant before: China Institute of Water Resources and Hydropower Research |