CN112014314A - Device and method for testing environmental adaptability of ship propeller protection matching coating - Google Patents
Device and method for testing environmental adaptability of ship propeller protection matching coating Download PDFInfo
- Publication number
- CN112014314A CN112014314A CN202010933434.2A CN202010933434A CN112014314A CN 112014314 A CN112014314 A CN 112014314A CN 202010933434 A CN202010933434 A CN 202010933434A CN 112014314 A CN112014314 A CN 112014314A
- Authority
- CN
- China
- Prior art keywords
- propeller
- sample
- test
- disc
- screw
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 66
- 238000000576 coating method Methods 0.000 title claims abstract description 32
- 239000011248 coating agent Substances 0.000 title claims abstract description 30
- 230000007613 environmental effect Effects 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000004088 simulation Methods 0.000 claims abstract description 25
- 239000011253 protective coating Substances 0.000 claims abstract description 23
- 239000013535 sea water Substances 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 14
- 238000010971 suitability test Methods 0.000 claims abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 238000005259 measurement Methods 0.000 claims description 14
- 229910000619 316 stainless steel Inorganic materials 0.000 claims description 8
- 238000004364 calculation method Methods 0.000 claims description 8
- 230000007797 corrosion Effects 0.000 claims description 4
- 238000005260 corrosion Methods 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 3
- 238000005336 cracking Methods 0.000 claims description 3
- 238000005187 foaming Methods 0.000 claims description 3
- 238000010998 test method Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 2
- 238000009991 scouring Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- 230000003373 anti-fouling effect Effects 0.000 abstract description 20
- 238000011156 evaluation Methods 0.000 abstract description 8
- 238000011161 development Methods 0.000 abstract description 7
- 238000010008 shearing Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000005587 bubbling Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 239000003973 paint Substances 0.000 description 10
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 239000002352 surface water Substances 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000002519 antifouling agent Substances 0.000 description 2
- BERDEBHAJNAUOM-UHFFFAOYSA-N copper(I) oxide Inorganic materials [Cu]O[Cu] BERDEBHAJNAUOM-UHFFFAOYSA-N 0.000 description 2
- KRFJLUBVMFXRPN-UHFFFAOYSA-N cuprous oxide Chemical compound [O-2].[Cu+].[Cu+] KRFJLUBVMFXRPN-UHFFFAOYSA-N 0.000 description 2
- 229940112669 cuprous oxide Drugs 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010186 staining Methods 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229920002313 fluoropolymer Polymers 0.000 description 1
- 239000004811 fluoropolymer Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/04—Measuring adhesive force between materials, e.g. of sealing tape, of coating
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N13/00—Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/26—Oils; Viscous liquids; Paints; Inks
- G01N33/32—Paints; Inks
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention belongs to the technical field of performance evaluation of ship propeller protection matching materials, and particularly relates to a ship propeller protection matching coating environmental suitability test device and method, wherein the device simulates the pitch angle and linear speed of ship propellers at different radiuses, the simulation of the operation condition of the ship propeller can test the matching performance of the propeller blades under different pitch angles and different rotating speeds (linear speeds) in a laboratory, including the phenomena of roughness rise, bubbling, shedding and the like caused by seawater shearing, realize the rapid evaluation of the environmental adaptability of the antifouling and matching coatings of the propeller, shorten the development period of the protective coating based on the characteristics of low consumption, rapid evaluation and accordance with the actual operation environment, solve the problem of limited application of the coating caused by the lack of the evaluation method of the environmental adaptability of the protective coating on the surface of the propeller, and have remarkable economic benefits and the promotion effect of industrial development.
Description
The technical field is as follows:
the invention belongs to the technical field of performance evaluation of ship propeller protection matching materials, and particularly relates to a ship propeller protection matching coating environment adaptability test device and method, which can test matching performance of propeller blades at different pitch angles and different rotating speeds (linear speeds) in a laboratory.
Background art:
the propeller is a key component of a ship propulsion system, and due to the severe service working condition and the complexity of the propeller, the fouling problem is not solved. Marine biofouling can significantly reduce the propeller propulsion efficiency, increase noise, and increase the maintenance time of ships, and research shows that only 3 months of fouling can reduce the propeller propulsion efficiency by more than 10%, reduce the speed by 20%, and increase the energy consumption by 40%, and measures must be taken to prevent and remove the fouling.
The marine antifouling paint undergoes the development process from toxicity to environmental protection, from short term to long term, and mainly comprises 3 types: firstly, the abrasion type antifouling paint is formed by adding cuprous oxide and other auxiliary antifouling agents into non-polishing film forming materials such as chlorinated rubber; secondly, a tin-free self-polishing antifouling coating is formed by adopting a copper/zinc/silicon acrylate self-polishing film forming material and cuprous oxide and other auxiliary antifouling agents; and thirdly, the fouling release type antifouling paint is formed by adopting the organic silicon elastomer as a film forming material and adding a surface energy regulator such as silicon oil. Due to the disadvantages and complexity of the service conditions of the ship propeller (such as high-speed water flow shearing action), the matched application of the antifouling coating on the surface of the propeller is always a difficult problem.
In 1995, International paint company (IP) applied an Intersleek coating on a propellerThe coating, after 12 months of use, performed well, had no marine biofouling, and only about 5% of the coating at the leading edge of the blade had flaking. Belzona2141 polyurethane resin paint which can bear the ultrahigh rotating speed of 115 knots without damage is provided by British Belzona corporation, can bear local high-pressure cavitation corrosion and corrosion, is easy to construct, and can be applied to components such as water turbines, propellers, valves and the like. Australian propeller dedicated coating PropTreatTMIn 2005, the propeller was used in the western australian sea area. The antifouling life of Velox Plus, a propeller-specific antifouling coating from PYI in the United states, is 2 years. China Shanghai high-bridge shipbuilding ocean engineering design Limited company adopts wear-resistant aluminum powder pure epoxy primer, elastic non-staining transition paint and fluoropolymer non-staining antifouling finish paint to be coated in a matching way to perform an antifouling test on a propeller.
At present, the development and production of antifouling coatings are well developed, shallow sea hanging plate experiments specified in GB/T5370-2007 and ship antifouling paint antifouling performance dynamic test methods specified in GB/T7789-2007 are mainly adopted for evaluating the antifouling performance of antifouling materials, the adhesion quantity and the coverage area of fouling organisms on the surfaces of the antifouling materials are mainly analyzed, and the seawater environment adaptability of the antifouling materials under the severe operation working condition of a propeller cannot be evaluated. Due to the lack of environmental adaptability data of the antifouling coating and a matching system thereof on the surface of the propeller, the verification and the application of a real ship are hindered. There is no relevant literature or report in the prior art. Therefore, the reasonable propeller protective coating matching test device and method are designed and established, and the propeller protective coating matching test device and method have important significance for developing a propeller protective coating matching test and promoting the development of a propeller protective coating.
The invention content is as follows:
the invention aims to overcome the defects in the prior art, and seeks to design a device and a method for testing the environmental adaptability of a ship propeller protection matching coating, which are convenient to disassemble and assemble, have the characteristics of low consumption, quickness and relatively accordance with the actual operating environment.
In order to achieve the aim, the main structure of the ship propeller protection matching coating environment adaptability test device comprises a support, a tachometer, a motor, a rotating shaft, a test water tank and a propeller simulation test disc; the top of the bracket is provided with a tachometer and a motor, the tachometer is electrically connected with the motor, the motor is connected with a propeller simulation test disk arranged in a test water tank through a rotating shaft, and the bottom of the bracket is connected with the test water tank; the main structure of the propeller simulation test disc comprises a disc, a fixing hole, a cylinder, a connecting hole, a screw, a nut and a sample fixing blade; the center of the disc is provided with a fixing hole, a plurality of cylinders with internal threads are arranged at the edge of the disc at equal intervals, the direction of the cylinders is consistent with the radius virtual line of the disc, a connecting hole is arranged on the disc close to the tail part of the cylinder, after the screw is screwed into the cylinder, two ends of the screw are fixed by nuts, and the outer ends of the screw are connected with the sample fixing blades.
The display accuracy of the tachometer related to the present invention is 1rpm (revolutions per minute); the power of the motor is 250-1000W; the material of the test water tank comprises PVC, 316 stainless steel and 316L stainless steel, the diameter is 60-150cm, and the test water tank is resistant to seawater corrosion; the materials of the disc, the cylinder and the sample fixing blade comprise titanium alloy, 316 stainless steel and 316L stainless steel, and the titanium alloy is preferably selected; the diameter of the disc is 200mm and 800 mm; the disc is connected with the cylinder in a welding way; the fixing hole is used for fixing the rotating shaft; the length of the cylinder is 20-50mm, and the inner diameter is 5-8 mm; the side length of the connecting hole is 30-50mm, so that the screw and the nut are convenient to mount; the screw is connected with the sample fixed blade in a welding way, and the length of the screw is 40-70 mm; the length of the sample fixing blade is 20-30mm, the width of the sample fixing blade is 40-50mm, the distance between the double holes is 30mm, and the sample fixing blade is used for installing and fixing a sample and is in bolted connection with the sample through the double holes; the material of the sample is selected according to the test requirement, chamfering and rounding edge processing are carried out, and the distance and the diameter of the tail end mounting hole are respectively consistent with the distance and the diameter of the sample fixing blade.
The invention relates to a method for testing environmental adaptability of a ship propeller protection matching coating, which comprises the following four steps of calculation, initial measurement, test and final measurement:
calculating:
according to the formula:
calculating the linear velocity of the blade root and the blade tip, wherein V is the linear velocity and the unit is m/s; d is the diameter of the propeller and the unit is m; n is the rotating speed of the propeller, and the unit is rpm;
at present, large-diameter low-rotation-speed propellers are commonly adopted for large ships, wherein the large-diameter propellers refer to propellers with relatively large diameters and with the propeller diameter draft ratio close to or reaching the maximum value of 0.75; the protective coating of the propeller is usually firstly damaged at the blade tip, because the linear velocity of water flow at the blade tip of the propeller is highest, the shearing action of the water flow is also strongest, the shear force of the water flow is a main influence factor of the damage and stripping failure of the coating on the surface of the propeller, and the linear velocity of the propeller is an important influence factor of the shear force. Therefore, when the scale propeller is adopted to test the matching adaptability of the coating, the edge linear speed of the scale propeller needs to be controlled to reach the edge linear speed of the marine propeller.
According to the formula:
calculating the pitch angles at different radii, wherein theta is the pitch angle and has the unit of (degrees); p is the pitch, in m; r is the radius of the propeller and is m;
the blade surface of the propeller blade is a part of the spiral surface, the pitch angle theta of the propeller at a certain radius R represents the inclination degree of the blade surface, the pitch angles at different radii are unequal, and the smaller the radius R is, the larger the pitch angle theta is.
The results of the calculations are shown in the following table:
(II) initial measurement:
respectively measuring the adhesion strength and the roughness of the protective coating of the sample by an adhesion strength tester and a laser confocal microscope, and measuring the surface hydrophilicity and hydrophobicity (surface water contact angle) of the protective coating of the sample by a contact angle measuring instrument;
(III) test:
adding seawater into a test water tank, wherein the salinity of the seawater is the same as that of a sea area of a simulation test, connecting a sample with a sample fixing blade, fixing the sample by a screw and a nut, adjusting a pitch angle according to the calculation result of the step (I), setting a rotating speed, carrying out a shear-scouring test in a seawater environment with a test period of 1 day, 1 week or 1 month, and sequentially measuring the seawater environment adaptability of different parts of the propeller coated with protective coatings;
(IV) final measurement:
and (3) measuring the adhesion strength, the roughness and the surface hydrophilicity and hydrophobicity of the protective coating of the sample, and recording the matching performance of foaming, cracking and falling of the protective coating.
Compared with the prior art, the device simulates the operation working condition of the ship propeller by simulating the pitch angle and the linear speed of the ship propeller at different radiuses, can test the matching performance of the propeller blades under different pitch angles and different rotating speeds (linear speeds) in a laboratory, and comprises the phenomena of roughness rise, foaming, falling and the like caused by seawater shearing, realizes the rapid evaluation of the antifouling property of the propeller and the environmental adaptability of a matching coating, shortens the development period of the protective coating based on the characteristics of low consumption, rapid evaluation and accordance with the actual operation environment, solves the problem of limited coating application caused by the lack of an evaluation method of the environmental adaptability of the protective coating on the surface of the propeller, and has obvious economic benefit and industry development promotion effect.
Description of the drawings:
fig. 1 is a schematic diagram of the principle of the main structure of the present invention.
Fig. 2 is a schematic diagram of a main structure principle of a propeller simulation test disc related to the invention.
Fig. 3 is a schematic diagram of the pitch angle adjustment according to the present invention.
The specific implementation mode is as follows:
the invention is further described below by way of an embodiment example in conjunction with the accompanying drawings.
Example 1:
the main structure of the ship propeller protection matching coating environment adaptability test device related to the embodiment comprises a support 1, a tachometer 2, a motor 3, a rotating shaft 4, a test water tank 5 and a propeller simulation test disc 6; the top of the bracket 1 is provided with a tachometer 2 and a motor 3, the tachometer 2 is electrically connected with the motor 3, the motor 3 is connected with a propeller simulation test disk 6 arranged in a test water tank 5 through a rotating shaft 4, and the bottom of the bracket 1 is connected with the test water tank 5; the main structure of the propeller simulation test disc 6 comprises a disc 60, a fixing hole 61, a cylinder 62, a connecting hole 63, a screw 64, a nut 65 and a sample fixing blade 66; the center of the disc 60 is provided with a fixing hole 61 with a circular structure, 6 cylinders 62 with internal threads are arranged at the edge of the disc 60 at equal intervals, the direction of the cylinders 62 is consistent with the radius virtual line of the disc 60, connecting holes 63 with a round corner square structure are arranged on the disc 60 close to the tail part of the cylinders 62, after the screw 64 is screwed into the cylinders 62, the two ends of the screw are fixed by nuts 65, and the outer ends of the screw 64 are connected with a sample fixing blade 66 with double holes.
The technical process of the test method for environmental adaptability of the ship propeller protection matching coating related to the embodiment comprises four steps of calculation, initial measurement, test and final measurement:
calculating:
knowing that the diameter of a propeller of a ship is 2.0m, the diameter of a hub is 0.5m, the average rotating speed is 300rpm, the pitch angle of the propeller is 20 degrees at the root of the blade, the pitch angle is 50 degrees at the tip of the blade, the pitch angle gradually decreases from the root of the blade to the tip of the blade, and the linear speed gradually increases according to the formula:
calculating the simulation rotating speed of the propeller simulation test disk 6, and setting the calculation result in the following table:
if the matching performance of the protective coating at the tip of the propeller blade of the ship in the seawater environment is inspected, fixing the sample 100 on the propeller simulation test disc 6, and setting the pitch angle to be 20 degrees; if the blade tip is the position, when a propeller simulation test disk 6 with the diameter of 200mm is adopted, the simulation rotating speed of the propeller simulation test disk 6 is set to 3000 rpm; when the propeller simulation test disk 6 with the diameter of 500mm is adopted, the simulation rotating speed of the propeller simulation test disk 6 is set to be 1200rpm, and when the propeller simulation test disk 6 with the diameter of 800mm is adopted, the simulation rotating speed of the propeller simulation test disk 6 is set to be 750 rpm;
(II) initial measurement:
the measurement of the protective coating of a sample 100, which is made of a copper alloy material with the size of 40mm × 80mm × 3mm and is sequentially coated with 100 μm epoxy anticorrosive primer, 100 μm organic silicon intermediate connection paint and 200 μm organic silicon antifouling finish paint, is carried out to obtain: the adhesive strength is 1.85MPa, the roughness is 43 mu m, and the surface water contact angle is 104 degrees;
(III) test:
adding seawater with the salinity of 25 per thousand into a test water tank 5, connecting a sample 100 with a sample fixing blade 66, fixing the sample by a screw 64 and a nut 65, adjusting the pitch angle to be 50 degrees according to the calculation result of the step (I), setting the rotating speed to be 300rpm according to the linear speed at the root of a propeller, carrying out a shear erosion test in the seawater environment for 1 week, and sequentially measuring the seawater environment adaptability of different parts of the propeller coated with protective coatings;
(IV) final measurement:
the measurement of the sample 100 yields: the protective coating has the advantages of 1.83MPa of adhesive strength, 51 mu m of roughness, 103 degrees of surface water contact angle, no bubbling, cracking and shedding phenomena and good overall matching property.
Claims (8)
1. A ship propeller protection matching coating environmental suitability test device is characterized in that a main body structure comprises a support, a tachometer, a motor, a rotating shaft, a test water tank and a propeller simulation test disc; the top of support is provided with tachometer and motor, and the tachometer is connected with the motor electricity, and the motor passes through the rotation axis to be connected with the screw simulation test dish of setting in experimental basin, and the bottom and the experimental basin of support are connected.
2. The test device for environmental suitability of the ship propeller protection matching coating according to claim 1, wherein the main structure of the propeller simulation test disc comprises a disc, a fixing hole, a cylinder, a connecting hole, a screw, a nut and a sample fixing blade; the center of the disc is provided with a fixing hole, a plurality of cylinders with internal threads are arranged at the edge of the disc at equal intervals, the direction of the cylinders is consistent with the radius virtual line of the disc, a connecting hole is arranged on the disc close to the tail part of the cylinder, after the screw is screwed into the cylinder, two ends of the screw are fixed by nuts, and the outer ends of the screw are connected with the sample fixing blades.
3. The apparatus for testing environmental suitability of a ship propeller protection matching coating according to claim 1, wherein the display accuracy of the tachometer is 1 rpm.
4. The ship propeller protection matching coating environmental suitability test device as claimed in claim 1, wherein the power of the motor is 250-1000W.
5. The apparatus for testing environmental suitability of the ship propeller protection matching coating according to claim 1, wherein the material of the test water tank comprises PVC, 316 stainless steel and 316L stainless steel, the diameter is 60-150cm, and the apparatus is resistant to seawater corrosion.
6. The test device for environmental suitability of the ship propeller protection matching coating according to claim 2, wherein the materials of the disc, the cylinder and the sample fixing blade all comprise titanium alloy, 316 stainless steel and 316L stainless steel; the diameter of the disc is 200mm and 800 mm; the disc is connected with the cylinder in a welding way; the fixing hole is used for fixing the rotating shaft; the length of the cylinder is 20-50mm, and the inner diameter is 5-8 mm; the side length of the connecting hole is 30-50mm, so that the screw and the nut are convenient to mount; the screw is connected with the sample fixed blade in a welding way, and the length of the screw is 40-70 mm; the length of the sample fixing blade is 20-30mm, the width of the sample fixing blade is 40-50mm, the distance between the double holes is 30mm, and the sample fixing blade is used for installing and fixing a sample and is in bolted connection with the sample through the double holes.
7. The ship propeller protection matching coating environment adaptability test device according to claim 6, characterized in that the material of the sample is selected according to the test requirements, chamfering and rounding edge processing are carried out, and the distance and the diameter of the tail end mounting hole are respectively consistent with the distance and the diameter of the sample fixed blade.
8. A test method for environmental adaptability of a ship propeller protection matching coating is characterized in that the process comprises four steps of calculation, initial measurement, test and final measurement:
calculating:
according to the formula:
calculating the linear velocity of the blade root and the blade tip, wherein V is the linear velocity and the unit is m/s; d is the diameter of the propeller and the unit is m; n is the rotating speed of the propeller, and the unit is rpm;
according to the formula:
calculating the pitch angles at different radii, wherein theta is the pitch angle and the unit is DEG; p is the pitch, in m; r is the radius of the propeller and is m;
(II) initial measurement:
respectively measuring the adhesion strength and the roughness of the protective coating of the sample by using an adhesion strength tester and a laser confocal microscope, and measuring the surface hydrophilicity and hydrophobicity of the protective coating of the sample by using a contact angle measuring instrument;
(III) test:
adding seawater into a test water tank, wherein the salinity of the seawater is the same as that of a sea area of a simulation test, connecting a sample with a sample fixing blade, fixing the sample by a screw and a nut, adjusting a pitch angle according to the calculation result of the step (I), setting a rotating speed, carrying out a shear-scouring test in a seawater environment with a test period of 1 day, 1 week or 1 month, and sequentially measuring the seawater environment adaptability of different parts of the propeller coated with protective coatings;
(IV) final measurement:
and (3) measuring the adhesion strength, the roughness and the surface hydrophilicity and hydrophobicity of the protective coating of the sample, and recording the matching performance of foaming, cracking and falling of the protective coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010933434.2A CN112014314A (en) | 2020-09-08 | 2020-09-08 | Device and method for testing environmental adaptability of ship propeller protection matching coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010933434.2A CN112014314A (en) | 2020-09-08 | 2020-09-08 | Device and method for testing environmental adaptability of ship propeller protection matching coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112014314A true CN112014314A (en) | 2020-12-01 |
Family
ID=73516044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010933434.2A Pending CN112014314A (en) | 2020-09-08 | 2020-09-08 | Device and method for testing environmental adaptability of ship propeller protection matching coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112014314A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113533188A (en) * | 2021-08-13 | 2021-10-22 | 中国船舶重工集团公司第七二五研究所 | Real sea evaluation method for antifouling performance of coating in waterline area |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08145874A (en) * | 1994-11-16 | 1996-06-07 | Suzuki Motor Corp | Durability testing device for coating film |
| KR20140080247A (en) * | 2012-12-20 | 2014-06-30 | 삼성중공업 주식회사 | Variable-pitch propeller for testing |
| CN104251813A (en) * | 2014-09-19 | 2014-12-31 | 江阴市产品质量监督检验所 | Test chamber for stroking resistance of paint film |
| CN109612922A (en) * | 2019-01-10 | 2019-04-12 | 鞍钢股份有限公司 | A kind of simulation marine propeller Service Environment corrosion testing apparatus and test method |
-
2020
- 2020-09-08 CN CN202010933434.2A patent/CN112014314A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08145874A (en) * | 1994-11-16 | 1996-06-07 | Suzuki Motor Corp | Durability testing device for coating film |
| KR20140080247A (en) * | 2012-12-20 | 2014-06-30 | 삼성중공업 주식회사 | Variable-pitch propeller for testing |
| CN104251813A (en) * | 2014-09-19 | 2014-12-31 | 江阴市产品质量监督检验所 | Test chamber for stroking resistance of paint film |
| CN109612922A (en) * | 2019-01-10 | 2019-04-12 | 鞍钢股份有限公司 | A kind of simulation marine propeller Service Environment corrosion testing apparatus and test method |
Non-Patent Citations (2)
| Title |
|---|
| 于雪艳等: "船舶螺旋桨耐空泡腐蚀防污涂层研制及性能研究", 《涂料工业》 * |
| 奚江涛: "聚氨酯涂层在海水中的穴蚀行为", 《万方数据知识服务平台》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113533188A (en) * | 2021-08-13 | 2021-10-22 | 中国船舶重工集团公司第七二五研究所 | Real sea evaluation method for antifouling performance of coating in waterline area |
| CN113533188B (en) * | 2021-08-13 | 2024-02-02 | 中国船舶重工集团公司第七二五研究所 | Real sea evaluation method for antifouling property of waterline area coating |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Lindholdt et al. | Effects of biofouling development on drag forces of hull coatings for ocean-going ships: a review | |
| Mewis et al. | Mewis duct–new developments, solutions and conclusions | |
| Hansen et al. | Model and full scale evaluation of a ‘propeller boss cap fins’ device fitted to an Aframax tanker | |
| Dang et al. | The Wageningen C-and D-series propellers | |
| Dang et al. | Quasi-steady two-quadrant open water tests for the Wageningen Propeller C-and D-series | |
| CN101710112B (en) | Device for testing marine anti-pollution materials | |
| CN112014314A (en) | Device and method for testing environmental adaptability of ship propeller protection matching coating | |
| CN104914043A (en) | Device for measuring adhesive force by quasi-static loading | |
| Lam et al. | Experimental investigation of the decay from a ship’s propeller | |
| Pham-Thanh et al. | Evaluation of cavitation erosion of a propeller blade surface made of composite materials | |
| Cusanelli et al. | Hydrodynamic energy saving enhancements for DDG 51 class ships | |
| Andersen et al. | Development of a marine propeller with nonplanar lifting surfaces | |
| Tarełko | The effect of hull biofouling on parameters characterising ship propulsion system efficiency | |
| CN202403991U (en) | Test device used for rapidly testing abrasion rate of self-polishing antifouling paint | |
| Atlar et al. | The effect of a foul release coating on propeller performance | |
| CN113740240B (en) | Corrosion inhibition performance testing device and method for corrosion inhibitor and application | |
| Wang et al. | Drag resistance of ship hulls: Effects of surface roughness of newly applied fouling control coatings, coating water absorption, and welding seams | |
| CN201583534U (en) | Ocean antifouling material testing device | |
| Lindholdt et al. | Estimation of long-term drag performance of fouling control coatings using an ocean-placed raft with multiple dynamic rotors | |
| CN101858840A (en) | Insertion type hull-bottom antifouling coating dynamic test rotating disc | |
| Liu et al. | A fast and transparent method for setting powering margins in ship design | |
| CN107314945B (en) | Dynamic simulation experiment device for rust-proof and anti-fouling capability of marine equipment surface coating | |
| CN1078316C (en) | Wear-resistant corrosion-resistant efficient pump | |
| Lee et al. | Study on new candidate coating materials to challenge rudder cavitation damage | |
| Kim et al. | A study on the effect of hull surface treatments ON SHIP performances |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201201 |
|
| RJ01 | Rejection of invention patent application after publication |