CN111537389A - Ocean engineering ship corrosion prevention measuring system - Google Patents
Ocean engineering ship corrosion prevention measuring system Download PDFInfo
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- CN111537389A CN111537389A CN202010528136.5A CN202010528136A CN111537389A CN 111537389 A CN111537389 A CN 111537389A CN 202010528136 A CN202010528136 A CN 202010528136A CN 111537389 A CN111537389 A CN 111537389A
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- 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
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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
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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
- G01N17/02—Electrochemical measuring systems for weathering, corrosion or corrosion-protection measurement
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Abstract
The invention provides an ocean engineering ship corrosion prevention measuring system. The ocean engineering ship corrosion prevention measuring system comprises the following steps: s1, preparation of a test sample: a metal plate for a ship is cut out, a protective coating is sprayed on the metal plate according to the preparation requirement of the ship, after the protective coating on the metal plate is completely dried, the metal plate is cut into four metal plates with the same size by using cutting equipment, and the four metal plates are respectively marked as a sample plate A, a sample plate B, a sample plate C and a sample plate D. The invention provides an ocean engineering ship corrosion prevention measuring system, which can respectively carry out chemical corrosion measurement and electrochemical measurement on a ship material plate to form a set of complete measuring process without excessive experimental equipment during actual operation, thereby greatly reducing the use cost of measurement.
Description
Technical Field
The invention relates to the field of ships, in particular to an ocean engineering ship corrosion prevention measuring system.
Background
The ship is a generic name of various ships, the ship is a vehicle capable of sailing or berthing in water for transportation or operation, and has different technical performance, equipment and structural style according to different use requirements, the ship is an artificial vehicle mainly operating in geographic water, in addition, a civil ship is generally called a ship, a military ship is called a ship, a small ship is called a boat or a boat, the generic name is a ship or a boat, the interior mainly comprises a containing space, a supporting structure and a drainage structure, the ship is provided with a propulsion system utilizing external or self-contained energy, the appearance is generally favorable for overcoming the linear envelope of the flow resistance, the material is continuously updated along with the technological progress, the early stage is natural materials such as wood, bamboo, hemp and the like, and the modern times are steel, aluminum, glass fiber, acrylic and various composite materials.
In order to determine the corrosion period of a ship running on the sea, the corrosion resistance of the ship needs to be measured in the manufacturing process of the ship, and in the prior art, the corrosion resistance of the ship needs to be measured by various experimental equipment due to the lack of a complete measuring system in the corrosion resistance measurement of the ship, so that the actual test process is very complicated, and for some ship manufacturers with small scales, the cost of introducing excessive experimental equipment is very high, which causes the difficulty in the actual operation of the corrosion resistance measurement.
Therefore, it is necessary to provide a corrosion prevention measuring system for marine engineering vessels to solve the above technical problems.
Disclosure of Invention
The invention provides an ocean engineering ship corrosion prevention measuring system, which solves the problem that a complete measuring system is lacked during ship corrosion prevention measurement, so that the ship corrosion prevention measuring system is very complicated in an actual test process.
In order to solve the technical problems, the marine engineering ship corrosion prevention measuring system provided by the invention comprises the following steps:
s1, preparation of a test sample: cutting a metal plate for a ship, spraying a protective coating on the metal plate according to the preparation requirement of the ship, cutting the metal plate into four metal plates with the same size by using cutting equipment after the protective coating on the metal plate is completely dried, and respectively marking the metal plates as a sample plate A, a sample plate B, a sample plate C and a sample plate D;
s2, grouping samples: dividing the template A and the template B prepared in the step S1 into a group, wherein the template A is used as a reference, the template B is used as a measurement object, and then dividing the template C and the template D into a group, wherein the template C is used as a reference, and the template D is used as a measurement object;
s3, determination of solvent preparation: preparing 500ml of NaCl solution with the concentration of 60%, measuring 500ml of tap water, and respectively placing the tap water in two beakers for standing and cooling;
s4, chemical corrosion determination: placing the sample plate A in the S2 in a reaction kettle filled with tap water, and placing the sample B in a reaction kettle filled with a NaCl solution, so that the two reaction kettles are in an environment with the temperature of 21 +/-2 ℃ and the relative humidity of 65% +/-2%;
s5, electrochemical corrosion determination: placing the sample C in the S2 in an electrochemical corrosion measuring device, measuring by the electrochemical corrosion measuring device, placing the sample D at room temperature, and comparing after the measurement of the sample C is finished;
s6, measuring the mass of the sample: s5, taking out the measured sample C, placing the sample C on an electronic scale for weighing, simultaneously weighing the sample D and recording data, taking out the sample A and the sample B in S4, and then weighing the sample A and the sample B respectively and recording data;
s7, experimental data arrangement: the chemical corrosion rate was obtained by dividing the mass of sample a measured in S6 by the mass of sample B, and then the electrochemical corrosion rate was obtained by dividing the mass of sample C by sample D.
Preferably, in the preparation of the sample in S1, in order to shorten the measurement time, the quality of the sample needs to be controlled to 5-10g, and the sample is a rectangular block as a whole.
Preferably, for guaranteeing the precision of survey in S3, can prepare the different NaCl solution of multiple concentration simultaneously, simulate the environment of different position sea water, the volume of running water and NaCl solution can be adjusted according to particular case.
Preferably, the S4 is required to ensure that the sample can be completely submerged by the solution when the sample plate is placed, and the soaking time is required to be more than seven days due to the slow speed of soaking corrosion.
Preferably, the electrolyte is a 5% NaCl solution, and the electrolysis time is 20-30 minutes in the electrochemical determination in S5.
Preferably, when the mass of the sample is measured in S6, all the moisture on the surface of the sample needs to be absorbed by absorbent cotton or other tools, so that the sample is prevented from being affected by the mass of water when being weighed, and multiple measurements are required to ensure the accuracy of data.
A marine galvanic corrosion measuring apparatus for performing galvanic corrosion measurement in the marine corrosion prevention measuring system according to claim 1, comprising:
a reaction cell and a capillary tube;
the direct current power supply is arranged at the top of the reaction tank, and the left side and the right side of the bottom of the direct current power supply are both provided with electrode columns;
the connecting plate is fixedly connected to the bottom end of the electrode column, a movable groove is formed in the bottom of the connecting plate, a threaded rod is rotatably connected to one side of the inner surface of the movable groove, and clamping blocks are in threaded connection with two sides of the outer surface of the threaded rod;
and the two elastic pieces are respectively sleeved on the left side and the right side of the outer surface of the threaded rod.
Preferably, an ammeter is arranged between the two electrode columns, and a reference copper electrode is arranged on the capillary tube.
Compared with the related technology, the ocean engineering ship anticorrosion determination system provided by the invention has the following beneficial effects:
the invention provides an ocean engineering ship corrosion prevention measuring system, which can respectively carry out chemical corrosion measurement and electrochemical measurement on a ship material plate to form a set of complete measuring process without excessive experimental equipment during actual operation, thereby greatly reducing the use cost of measurement.
Drawings
FIG. 1 is a schematic structural view of a marine galvanic corrosion measuring apparatus according to the present invention;
fig. 2 is a schematic view of the structure inside the connection block shown in fig. 1.
Reference numbers in the figures: 1. the device comprises a reaction tank, 2, a capillary tube, 3, a direct current power supply, 4, an electrode column, 5, a connecting plate, 6, a movable groove, 7, a threaded rod, 8, a clamping block, 9, an elastic piece, 10, an ammeter, 11 and a reference copper electrode.
Detailed Description
The invention is further described with reference to the following figures and embodiments.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a marine galvanic corrosion measuring apparatus according to the present invention; fig. 2 is a schematic view of the structure inside the connection block shown in fig. 1. The marine engineering ship corrosion prevention measuring system comprises the following steps:
s1, preparation of a test sample: cutting a metal plate for a ship, spraying a protective coating on the metal plate according to the preparation requirement of the ship, cutting the metal plate into four metal plates with the same size by using cutting equipment after the protective coating on the metal plate is completely dried, and respectively marking the metal plates as a sample plate A, a sample plate B, a sample plate C and a sample plate D;
s2, grouping samples: dividing the template A and the template B prepared in the step S1 into a group, wherein the template A is used as a reference, the template B is used as a measurement object, and then dividing the template C and the template D into a group, wherein the template C is used as a reference, and the template D is used as a measurement object;
s3, determination of solvent preparation: preparing 500ml of NaCl solution with the concentration of 60%, measuring 500ml of tap water, and respectively placing the tap water in two beakers for standing and cooling;
s4, chemical corrosion determination: placing the sample plate A in the S2 in a reaction kettle filled with tap water, and placing the sample B in a reaction kettle filled with a NaCl solution, so that the two reaction kettles are in an environment with the temperature of 21 +/-2 ℃ and the relative humidity of 65% +/-2%;
s5, electrochemical corrosion determination: placing the sample C in the S2 in an electrochemical corrosion measuring device, measuring by the electrochemical corrosion measuring device, placing the sample D at room temperature, and comparing after the measurement of the sample C is finished;
s6, measuring the mass of the sample: s5, taking out the measured sample C, placing the sample C on an electronic scale for weighing, simultaneously weighing the sample D and recording data, taking out the sample A and the sample B in S4, and then weighing the sample A and the sample B respectively and recording data;
s7, experimental data arrangement: the chemical corrosion rate was obtained by dividing the mass of sample a measured in S6 by the mass of sample B, and then the electrochemical corrosion rate was obtained by dividing the mass of sample C by sample D.
Through setting up this survey system, can carry out chemical corrosion survey and electrochemical measurement respectively to marine material board, form one set of complete survey flow, and do not need too much experimental facilities when actual operation to greatly reduced the use cost of survey, and method operation steps is simple in this system, and the length of survey is relatively short, can wide application in the less manufacturing plant of scale.
In the preparation of the sample in the S1, in order to shorten the measurement time, the quality of the sample needs to be controlled to 5-10g, and the sample is a rectangular block as a whole.
In order to guarantee the precision of survey among the S3, can prepare the different NaCl solution of multiple concentration simultaneously, simulate the environment of different position sea water, the volume of running water and NaCl solution can be adjusted according to particular case.
When the sample plate is placed, the S4 needs to ensure that the sample can be completely submerged by the solution, and the soaking time needs to be ensured to be more than seven days due to the slow speed of soaking corrosion.
In the electrochemical determination in S5, a NaCl solution with the concentration of 5% is used as the electrolyte, and the electrolysis time is 20-30 minutes.
When the mass of the sample is measured in the S6, the water on the surface of the sample needs to be completely absorbed by absorbent cotton or other tools, so that the sample is prevented from being influenced by the mass of water when being weighed, and the measurement needs to be carried out for multiple times, thereby ensuring the accuracy of data.
A marine galvanic corrosion measuring apparatus for performing galvanic corrosion measurement in the marine corrosion prevention measuring system according to claim 1, comprising:
a reaction cell 1 and a capillary 2;
the direct current power supply 3 is arranged at the top of the reaction tank 1, and the left side and the right side of the bottom of the direct current power supply 3 are both provided with electrode posts 4;
the connecting plate 5 is fixedly connected to the bottom end of the electrode column 4, a movable groove 6 is formed in the bottom of the connecting plate 5, a threaded rod 7 is rotatably connected to one side of the inner surface of the movable groove 6, and clamping blocks 8 are in threaded connection with two sides of the outer surface of the threaded rod 7;
and the elastic pieces 9 are respectively sleeved on the left side and the right side of the outer surface of the threaded rod 7.
NaCl solution with the concentration of 5 percent is filled in the reaction tank 1 as electrolyte;
the direct current power supply 3 is used as a power output source during electrolysis, and the electrode posts 4 on the left side and the right side are respectively the anode and the cathode of the direct current power supply 3 and are communicated with the direct current power supply 3;
the left side and the right side of the outer surface of the threaded rod 7 are simultaneously provided with two threads with opposite threads, the inner parts of the two clamping blocks 8 are provided with thread grooves matched with the threads, one end of the threaded rod 7 penetrates through the inner part of the connecting plate 5 and extends to the outer part of the connecting plate 5, a knob is fixedly connected to one end of the threaded rod 7 extending to the outer part of the connecting plate 5, the threaded rod 7 can be driven to rotate by rotating the knob, and the two clamping blocks 8 can be simultaneously close to or simultaneously far away from each other by rotating the threaded rod 7, so that the tested metal can be clamped and fixed;
the elastic piece 9 is positioned between one side of the inner surface of the movable groove 6 and the side opposite to the clamping block 8, when the clamping blocks 8 are far away from each other, the elastic piece 9 can be extruded to shrink, the elastic piece 9 is arranged to provide elastic support for the clamping blocks 8, so that the clamping blocks 8 have stable clamping force, and the connecting plate 5, the clamping blocks 8 and the threaded rod 7 are arranged in a matched mode to form a special clamp so as to effectively fix the metal block to be detected and the electrode block, so that the fixing effect is better and more stable compared with the traditional spring clamp, the metal block cannot fall off, and the actual operation is more convenient;
an ammeter 10 is arranged between the two electrode columns 4, and a reference copper electrode 11 is arranged on the capillary tube 2.
When carrying out electrolytic measurement, the measured metal is required to be placed on the connecting plate 5 at the bottom of the left electrode column 4 to be clamped and fixed as an electrolytic anode, then a copper block is selected as a cathode and installed on the connecting plate 5 at the bottom of the right electrode column 4, the measured metal block and the copper block are connected with the direct current power supply 3 to form an anode (+) and a cathode (-) at the moment, then the direct current power supply 3 is started, so that ions can move between the measured metal block and the copper block, the current quantity change between the anode and the cathode can be displayed by connecting the direct current power supply 3 through the ammeter 10, meanwhile, the measured metal block is connected with the reference copper electrode 11 for setting a reference potential, the measured metal block is communicated into the reaction tank 1 through the capillary 2 to generate the ion movement between the reference copper electrode 11 and the measured metal block, and when the direct current power supply 3 supplies direct current to the measured metal block and the copper block and simultaneously maintains the voltage at 700mmv, NaCl solution is used for dissolving the direct current power supply to the measured The liquid flows through the current between the metal block and the copper block to be measured, the current appears on the ammeter 10, the potential difference between the metal block and the copper block to be measured is utilized to measure the corrosion amount of the metal block to be measured, and then data is recorded.
The working principle of the ocean engineering ship anticorrosion measuring system provided by the invention is as follows:
s1, preparation of a test sample: cutting a metal plate for a ship, spraying a protective coating on the metal plate according to the preparation requirement of the ship, cutting the metal plate into four metal plates with the same size by using cutting equipment after the protective coating on the metal plate is completely dried, and respectively marking the metal plates as a sample plate A, a sample plate B, a sample plate C and a sample plate D;
s2, grouping samples: dividing the template A and the template B prepared in the step S1 into a group, wherein the template A is used as a reference, the template B is used as a measurement object, and then dividing the template C and the template D into a group, wherein the template C is used as a reference, and the template D is used as a measurement object;
s3, determination of solvent preparation: preparing 500ml of NaCl solution with the concentration of 60%, measuring 500ml of tap water, and respectively placing the tap water in two beakers for standing and cooling;
s4, chemical corrosion determination: placing the sample plate A in the S2 in a reaction kettle filled with tap water, and placing the sample B in a reaction kettle filled with a NaCl solution, so that the two reaction kettles are in an environment with the temperature of 21 +/-2 ℃ and the relative humidity of 65% +/-2%;
s5, electrochemical corrosion determination: placing the sample C in the S2 in an electrochemical corrosion measuring device, measuring by the electrochemical corrosion measuring device, placing the sample D at room temperature, and comparing after the measurement of the sample C is finished;
s6, measuring the mass of the sample: s5, taking out the measured sample C, placing the sample C on an electronic scale for weighing, simultaneously weighing the sample D and recording data, taking out the sample A and the sample B in S4, and then weighing the sample A and the sample B respectively and recording data;
s7, experimental data arrangement: the chemical corrosion rate was obtained by dividing the mass of sample a measured in S6 by the mass of sample B, and then the electrochemical corrosion rate was obtained by dividing the mass of sample C by sample D.
Compared with the related technology, the ocean engineering ship anticorrosion determination system provided by the invention has the following beneficial effects:
the invention provides an ocean engineering ship corrosion prevention measuring system, which can respectively carry out chemical corrosion measurement and electrochemical measurement on a ship material plate to form a set of complete measuring process without excessive experimental equipment during actual operation, thereby greatly reducing the use cost of measurement.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. An ocean engineering ship corrosion prevention measuring system is characterized by comprising the following method steps:
s1, preparation of a test sample: cutting a metal plate for a ship, spraying a protective coating on the metal plate according to the preparation requirement of the ship, cutting the metal plate into four metal plates with the same size by using cutting equipment after the protective coating on the metal plate is completely dried, and respectively marking the metal plates as a sample plate A, a sample plate B, a sample plate C and a sample plate D;
s2, grouping samples: dividing the template A and the template B prepared in the step S1 into a group, wherein the template A is used as a reference, the template B is used as a measurement object, and then dividing the template C and the template D into a group, wherein the template C is used as a reference, and the template D is used as a measurement object;
s3, determination of solvent preparation: preparing 500ml of NaCl solution with the concentration of 60%, measuring 500ml of tap water, and respectively placing the tap water in two beakers for standing and cooling;
s4, chemical corrosion determination: placing the sample plate A in the S2 in a reaction kettle filled with tap water, and placing the sample B in a reaction kettle filled with a NaCl solution, so that the two reaction kettles are in an environment with the temperature of 21 +/-2 ℃ and the relative humidity of 65% +/-2%;
s5, electrochemical corrosion determination: placing the sample C in the S2 in an electrochemical corrosion measuring device, measuring by the electrochemical corrosion measuring device, placing the sample D at room temperature, and comparing after the measurement of the sample C is finished;
s6, measuring the mass of the sample: s5, taking out the measured sample C, placing the sample C on an electronic scale for weighing, simultaneously weighing the sample D and recording data, taking out the sample A and the sample B in S4, and then weighing the sample A and the sample B respectively and recording data;
s7, experimental data arrangement: the chemical corrosion rate was obtained by dividing the mass of sample a measured in S6 by the mass of sample B, and then the electrochemical corrosion rate was obtained by dividing the mass of sample C by sample D.
2. The marine engineering vessel corrosion prevention measuring system according to claim 1, wherein in the step S1, in order to shorten the measuring time, the quality of the sample is controlled to be 5-10g, and the sample is a rectangular block as a whole.
3. The oceanographic engineering ship corrosion prevention measuring system according to claim 1, wherein in order to ensure the measuring accuracy in S3, a plurality of NaCl solutions with different concentrations can be prepared at the same time to simulate the environment of seawater in different positions, and the volumes of tap water and the NaCl solutions can be adjusted according to specific conditions.
4. The marine engineering vessel corrosion prevention measuring system according to claim 1, wherein the S4 is required to ensure that the sample can be completely submerged by the solution when the sample plate is placed, and the soaking time is required to be more than seven days due to slow soaking corrosion.
5. The marine engineering vessel corrosion prevention measuring system according to claim 1, wherein the electrolyte is a 5% NaCl solution for 20-30 minutes in the electrochemical measurement in S5.
6. The ocean engineering vessel corrosion prevention measuring system according to claim 1, wherein when the mass of the sample is measured in S6, all the water on the surface of the sample needs to be sucked dry by using absorbent cotton or other tools, so that the sample is prevented from being affected by the mass of water when being weighed, and the data accuracy is ensured by performing multiple measurements.
7. A marine galvanic corrosion measuring apparatus for performing galvanic corrosion measurement in the marine corrosion prevention measuring system according to claim 1, comprising:
a reaction cell and a capillary tube;
the direct current power supply is arranged at the top of the reaction tank, and the left side and the right side of the bottom of the direct current power supply are both provided with electrode columns;
the connecting plate is fixedly connected to the bottom end of the electrode column, a movable groove is formed in the bottom of the connecting plate, a threaded rod is rotatably connected to one side of the inner surface of the movable groove, and clamping blocks are in threaded connection with two sides of the outer surface of the threaded rod;
and the two elastic pieces are respectively sleeved on the left side and the right side of the outer surface of the threaded rod.
8. The marine galvanic corrosion measuring apparatus according to claim 7, wherein a current meter is provided between the two electrode columns, and a reference copper electrode is provided on the capillary.
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| CN202010528136.5A CN111537389A (en) | 2020-06-11 | 2020-06-11 | Ocean engineering ship corrosion prevention measuring system |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103627299A (en) * | 2013-12-09 | 2014-03-12 | 深圳市嘉达高科产业发展有限公司 | Anti-corrosive ship paint, and preparation method and application of paint |
| CN204536112U (en) * | 2015-05-05 | 2015-08-05 | 苏州方正工程技术开发检测有限公司 | A kind of cylindrical specimens wedge interfere fixture |
| CN207396305U (en) * | 2017-08-23 | 2018-05-22 | 于安泓 | A kind of static corrosion test device |
| CN108593536A (en) * | 2018-04-22 | 2018-09-28 | 北京工业大学 | A kind of dynamic electric Chemical cover experimental rig |
| CN108844843A (en) * | 2018-09-10 | 2018-11-20 | 临汾聚友泉电子科技有限公司 | A kind of metal material abrasion resistance tester and its application method |
| CN209979371U (en) * | 2019-05-27 | 2020-01-21 | 江西环铭建设有限公司 | Building material hardness bearing capacity detection device |
| CN110987786A (en) * | 2019-12-26 | 2020-04-10 | 国网四川省电力公司电力科学研究院 | Power transformer and metal corrosion state judgment method of support framework of power transformer |
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2020
- 2020-06-11 CN CN202010528136.5A patent/CN111537389A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103627299A (en) * | 2013-12-09 | 2014-03-12 | 深圳市嘉达高科产业发展有限公司 | Anti-corrosive ship paint, and preparation method and application of paint |
| CN204536112U (en) * | 2015-05-05 | 2015-08-05 | 苏州方正工程技术开发检测有限公司 | A kind of cylindrical specimens wedge interfere fixture |
| CN207396305U (en) * | 2017-08-23 | 2018-05-22 | 于安泓 | A kind of static corrosion test device |
| CN108593536A (en) * | 2018-04-22 | 2018-09-28 | 北京工业大学 | A kind of dynamic electric Chemical cover experimental rig |
| CN108844843A (en) * | 2018-09-10 | 2018-11-20 | 临汾聚友泉电子科技有限公司 | A kind of metal material abrasion resistance tester and its application method |
| CN209979371U (en) * | 2019-05-27 | 2020-01-21 | 江西环铭建设有限公司 | Building material hardness bearing capacity detection device |
| CN110987786A (en) * | 2019-12-26 | 2020-04-10 | 国网四川省电力公司电力科学研究院 | Power transformer and metal corrosion state judgment method of support framework of power transformer |
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Application publication date: 20200814 |