Anti-rust properties test of rust preventive oil—Electrochemical measurement with wire beam electrode
Some standard content:
ICS 25.220.70
Case number: 156692005
Mechanical industry standard of the People's Republic of China
JB/T 105282005
Anti-rust properties test of riust preventive uilHlcctrochemical measurenent with wire beam electrude2005-09-23 release
2006-02-01 implementation
People's Republic of China National Development and Reform Commission issued the general,
normative reference documents
3 terms and definitions
test materials and test
test probe electrical materials
mechanical electrical board materials
test equipment.
test in-depth
track electrical
multiple electrical pickup electrochemical test proposals
test cable requirements
factors affecting the test
good electrode surface flow
ultrasonic intensity and stability
Empty procedure,
Preparation of drop strength
Sample and tree or environment
Oil film preparation
Test instrument accuracy
Test procedure
8.6 Ultra-high speed test
9 Evaluation method of rust resistance
10 Test section.
Anti-rust performance rating of rust-proof oil (normative annex) Chemical adjustment of multi-electrode makeup B) Anti-rust performance rating of rust-proof oil, 1 Test probe front and back view,
Figure 2 Experimental test schematic diagram
Figure A.1 Test working principle diagram
Anti-rust performance rating
JB/T 10528-2005
This standard is formulated for the first time
This standard's annex A is a normative appendix and the appendix is an informative appendix. This standard is issued by China Machinery Industry Federation and the National Technical Committee for Standardization of Metallurgical and Non-metallic Coverings. The unit that initiated this standard: Qiannan University.
JE/T10528—2005
The main drafters of this standard: Zai Zuofang, Chen Diping, Xin Jiucheng, Wang Zhendao, Zhu Xiaoli, Xin Hao, Wu Cuilan. Introduction
JB/T10528
Since there are many factors that affect the anti-rust performance of anti-rust oil, a single electrochemical rapid test cannot absolutely indicate the anti-rust performance of anti-rust oil. Therefore, the test results obtained by this standard cannot be used as a guide for the anti-rust performance of the sample in all use environments. Nevertheless, the method specified in this standard can still be used as a method for comparing the quality of anti-rust oils or samples. 1 Scope
Anti-rust performance test of anti-rust oil Multi-electrode electrochemical method JR/T1D528—2005
This standard specifies the multi-electrode electrochemical test method, equipment and procedure for evaluating the anti-rust performance of anti-rust oils. This standard is applicable to the comparative test of the anti-rust performance of small anti-rust oils for basic materials. 2 Normative references
The following documents are cited as clauses in this paragraph through reference in this standard. For dated reference documents, all subsequent modifications (excluding errata) or revisions are not applicable to this standard. However, the parties who reach an agreement based on this standard may use the latest versions of these documents. For undated reference documents, the referenced versions are applicable to Technical Standard B/T 68 Chemical Reagents Ethanol (Hydroethanol)
CB/T 1266 Chemical Reagents Sodium chloride
GB 3138 Metal plating and chemical treatment and related process technology GB 11372 Anti-rust
GB/15894 Chemical reagents Petroleum aldehyde (GB/T15894-1995, VISO6353-3:1997R73) ASTMA853-93 Technical specification for iron wire
3 Terms and definitions
GB/T313 and GT1132 and the following terms and definitions are applicable to this standard. 3.1
Anti-rust properties
The ability of the anti-rust oil to effectively prevent corrosion on the metal surface under the protective film. 3.2
Multi-electrode electrochemical method is a method of evaluating the anti-rust performance by measuring the electrochemical parameters in the corrosion medium of multiple electrodes and making statistics. 3.3
MCU Microprocessor MicroChannel Unit MCL, single-chip microcomputer With the development of large-scale integrated circuits, the CPU, RAM, ROM, timer, and counter of a computer are integrated on a chip, forming a chip-level computer. 4 Principle
According to modern electrochemical theory, corrosion at room temperature is an electrochemical process. The greater the force of the process, the smaller the corrosion rate, that is, the greater the measured resistance. From the perspective of electrochemical theory, the resistivity of rust-proof oil in corrosive medium is the key indicator of rust-proof performance of rust-proof oil. Taking into account the heterogeneity of rust-proof oil, the low-break zone is the thinning link of rust-proof film, which first causes corrosion under the membrane and directly controls the quality of the membrane's anti-corrosion performance: 5 Materials and reagents
5.1 Probe electrode material
=0.9mmTyeASTMAR53Blkanr iron wire
5.2 Auxiliary electrode material
JE/T10528—2005
Diameter=1mm5
5.3 Reagents
The boiling range of petroleum is 60℃~90℃, which meets the requirements of GBT15894: NaE1 should meet the requirements of GBT1266: Anhydrous ethanol should meet the requirements of GR/T678.
6 Test equipment
6.1 Test probe
Front
[Iron Fiber, 2 Epoxy Resin,
Surrounding 1 Test Head Front and Side Leave
The test probe is made of 64 iron wires (0.9mm ± 0.1mm, 2.5mm between each wire) (32mm ± 1mm, 45mm high: as shown in Figure 1). Each lock wire is an independent electrode, connected to the multi-electrode electrochemical tester to form a test probe for a multi-electrode system. 6.2 Auxiliary electrode
The auxiliary electrode is a 45 steel sheet with a diameter of 18mm and a length of 10ram, The surface is sealed with a ring resin. 6.3 The test tank is a disposable vinyl plastic cup with a diameter of 50mm and a height of 45mm. 6.4 Multi-electrode electrochemical tester Real electrode electrochemical tester is a variable instrument designed for connecting the oil film DC resistance and potential test source (see Appendix A) 6.5 Power supply is AC power: 2.20V~20V, 50Hz 6.6 Schematic diagram of the test circuit Dry and clean the test probe and the auxiliary electrode are placed in a 5% NaCl solution. The test probe and the auxiliary electrode are half-aligned with the working surface of the water, and the parallel distance is 15mm~5mm. The 64 electrodes are connected to the multi-electrode electrochemical through different lines. One end of the tester is shown in Figure 2. The auxiliary electrode is connected to one end of the electrochemical tester. The voltage source, oil-coated test probe, 5% NaI solution, and auxiliary electrode form a current path. The resistance obtained by the test is the sum of the electrolyte and the electrolyte. The electrochemical tester of the home electrode tests 64 electrodes in real time, and the electrical distribution of the 64 electrodes can be obtained: 7 Influencing factors
"The following factors will affect the measurement and evaluation results. 7.1 Electrode surface cleanliness
The cleanliness of the electrode surface will affect the oil film on the electrode surface, thereby causing changes in the test results. 7.2 Cleanliness wwW.bzxz.Net
1 Probe: 2-Auxiliary electrode
3-Connected to the guest electrode electrochemical test: 4|| tt||Figure 2 Experimental test decay diagram
JB/T10528—2005
The change will cause the change of activation energy and the dispersion and migration speed of the reaction control, which will eventually lead to the change of visual test electrons. 7.3 Humidity
The humidity affects the dry state of the film during the oil film preparation process. 7.4 Ultrasonic intensity and its stability
In the new sound suppression speed test, the corrosion resistance and oil adhesion of the corrosive material are affected. 8 Measurement procedure
The following operating rules should be followed during measurement.
8.1 Solution preparation
Use deionized water and analytical pure NaCl to prepare a 5% NaI solution with pE=7. The pH value of the solution is adjusted to 6 with NaOH or HC1.2. Sample preparation and test environment
Preparation of anti-rust membrane and test of rust performance should be carried out in an indoor environment with a temperature of 20℃～25℃ and a relative humidity of 70%! 2.3 Preparation of anti-rust membrane
The test probe should be degreased with blue, washed with 1-5% ethanol and then dried in turn: put it into the gasifier: lift the working surface of the test probe into the anti-rust material for 1min, wipe the side of the probe with filter paper or absorbent cotton: put the probe into the sample preparation, keep the working surface in a vertical position, let the oil level off for 24 seconds, and then put it into 5% VaCI liquid for testing. The test probe should be cleaned and stored for 1 hour before use. Before use, it should be cleaned and stored for 1 hour. Before use, it should be cleaned and stored for 1 hour. Before use, it should be cleaned and stored for 1 hour. Calibration is carried out according to the instructions. 8.5 Test procedure
After the membrane is tested, the depth of the test head and the screen auxiliary electric successively set the NC1 error in the melting box of 5% <Figure 2, 3m later, the tester will detect the 64 electrodes detected. A total of 192 electrode data pieces are obtained as evaluation samples. 86 Ultrasonic acceleration test
For most anti-rust parts, the test can be carried out directly, and the quality is evaluated according to the parameters of 9.2~9.4: For the anti-rust parts, the electrochemical test cannot be immediately responded, and the quality is unclear. For the anti-rust test, in order to speed up the penetration process of the medium, the test time is extended to the maximum, and the room temperature is 20~25℃. The oil film is subjected to ultrasonic speed at a certain rate and frequency in the falling liquid. The test is carried out after every 5m. There is a chemical response, at the highest level, the order of 9.2~-9.4 is used for evaluation. The ultrasonic intensity of the ultrasonic device is 0.25W/ent10.025W/cm, and the frequency is 30kHz±3kHz: 3
JB/T10528-2005
9 Six-parameter evaluation method for anti-rust performance
Use the above test sequence, and then use the following six effects to evaluate the anti-rust performance. 9.1 Start-up time7 refers to the ultrasonic time used when the electrochemical response is strong. Ultrasonic time is the key parameter for evaluating the quality of weak rust injection. The longer the ultrasonic time is, the better it is. The ultrasonic time is judged according to the following five parameters: 9.2
Where:
is the sum of the electric absorption numbers of two electrode resistors distributed in 1012:
is the sum of the electric absorption numbers of 19 electrode resistors distributed in 10°2.102:
is the value of the electric absorption number of the metal under the film under the action of the magic medium. First of all, the comparison (including positive rounding) shows that the numerical value of anti-rust performance is excellent, (
) The test shows that the oil film in the used area has low rust ability, and the medium is easy to be stable. If the metal is to be used effectively, it will appear the steel point: the metal layer under the film is the potential area where the casting point will be out of specification. The rust release force of the area is strong, and it is difficult for the test medium to penetrate the film. The rest of the metal will not corrode, which means that the metal will not be used effectively. The electric number generated by the nucleus, which represents the electric number of the medium under the life of the medium, is used as an approximate method: then +0.52, which can be used to represent the equivalent electric number of the medium under the life of the medium, or the equivalent electric number of the medium under the life of the medium 9.31gR-
-192 The average value of the logarithm of the resistance of the seven plates:
Under the condition of 1005 phase return, it is relatively long, the integer value is 9.49-192 The mean square error of the logarithmic resistance values of the garbage output: (g R -Ig n)3
Reflects the dispersion or unevenness of the rust resistance of the 192 electrode areas of the oil film. Under the above reliable conditions, compare. The smaller the better:
Note: In the two probes designed for the design of the excitation element. If it is > 25%, retest. 10 Test report
Unless otherwise specified in the specification, the test report should include the following contents a) Name of the tested oil sample, size, production date, packaging: 6) Test instrument number, test date: c) Record R, ,,,, and: d) Comparison of anti-rust performance
e) Name of the operator.
Appendix A
(Normative Appendix)
Multi-electrode electrochemical test instrument
A.1 Multi-electrode electrochemical test instrument is a special instrument designed according to the principle of film DC resistance test. JB/T10528—2005
A2 The tester should be composed of two parts: the host and the test box, including display, processing, connection, control and other parts: the test box includes the test probe and the micro-channel flow interface (see Figure 1). A.3 1. Working principle: The set reference voltage is applied to 64 points and the auxiliary electrode forms a circuit (see Figure A.1), and the resistance is converted through the block. After amplification by the programmable amplifier, the test result is stored and displayed after processing by the MC. As the control core of the instrument, MC is responsible for the automatic test control of the entire instrument, including instrument detection, automatic range conversion, mechanical operation of the test box, data input, and MC1 is also responsible for the processing of test data. The numerical evaluation system for evaluating the anti-rust performance of anti-rust oil is based on the core method, namely, the distribution of electrodes in the low resistance zone during ultrasound (T), the average value of the resistance value R, and the mean square error of the resistance value: and the anti-rust performance of the organic oil is evaluated accordingly (see Chapter 5). 41 Working principle diagram of the tester A.4 Electrode electrochemical tester Test electrode resistance R Speed requirement: Measurement error 35% Measurement error: 10% Moisture error 40% (RI×100) (1×10QR1×10\) |JB/T1052B—2005
【Informative Appendix:
Evaluation of Anti-Rust Performance of Anti-Rust Oil
For the convenience of application, according to the resistance distribution of oil film obtained by test, the anti-rust performance evaluation level is shown as follows: The same test is performed on 192 probes and 192 data samples are obtained. Let x = 100%, which represents the percentage of metal under film separation in the 192 electrode oil-desorption areas encountering the corrosive medium, which is called the metal under film corrosion degree: According to the metal under film corrosion degree, the anti-rust performance is divided into 0--5 numbers, with grade 5 having the best anti-rust performance and grade 6 having the worst corrosion performance (see Table R.1). According to s=192
, the grade criterion of the number of equivalent electrodes of the metal under the corrosion medium "impact film" can be obtained, which is also listed in Table H.1: The same grade of the two samples of the same grade will be judged according to the description in Chapter 1.1 Anti-rust performance rating
Rust resistance under rubber film
7~21
1~·25
25~·50
ay--s5
51··100
97~1922
Where:
- The sum of the electrical inputs of the two electrode resistors distributed in 1012: 19 electrical resistors distributed in 10°2. The electrical inputs of the 102 level are: Under the action of the magic medium, the metal under the film will undergo corrosion. First of all, the comparison (including positive rounding) shows that the numerical value is excellent in anti-rust performance, (
Through: the color experiment shows that the oil film in the area with low rust resistance is easy to be stable, and the metal under the film will be effective. The steel point will appear: the metal layer under the film is the potential area of the casting point, the area of ×102 is more rust-resistant, and it is difficult for the test medium to penetrate the film, and the rest of the metal will not be corroded, indicating that the metal under the film is actually corrosion-resistant. The electric number generated by the nucleus, which represents the electric number of the medium under the life of the medium, is used as an approximate method: then +0.52, which can be used to represent the equivalent electric number of the medium under the life of the medium, or the equivalent electric number of the medium under the life of the medium 9.31gR-
-192 The average value of the logarithm of the resistance of the seven plates:
Under the condition of 1005 phase return, it is relatively long, the integer value is 9.49-192 The mean square error of the logarithmic resistance values of the garbage output: (g R -Ig n)3
Reflects the dispersion or unevenness of the rust resistance of the 192 electrode areas of the oil film. Under the above reliable conditions, compare. The smaller the better:
Note: In the two probes designed for the design of the excitation element. If it is > 25%, retest. 10 Test report
Unless otherwise specified in the specification, the test report should include the following contents a) Name of the tested oil sample, size, production date, packaging: 6) Test instrument number, test date: c) Record R, ,,,, and: d) Comparison of anti-rust performance
e) Name of the operator.
Appendix A
(Normative Appendix)
Multi-electrode electrochemical test instrument
A.1 Multi-electrode electrochemical test instrument is a special instrument designed according to the principle of film DC resistance test. JB/T10528—2005
A2 The tester should be composed of two parts: the host and the test box, including display, processing, connection, control and other parts: the test box includes the test probe and the micro-channel flow interface (see Figure 1). A.3 1. Working principle: The set reference voltage is applied to 64 points and the auxiliary electrode forms a circuit (see Figure A.1), and the resistance is converted through the block. After amplification by the programmable amplifier, the test result is stored and displayed after processing by the MC. As the control core of the instrument, MC is responsible for the automatic test control of the entire instrument, including instrument detection, automatic range conversion, mechanical operation of the test box, data input, and MC1 is also responsible for the processing of test data. The numerical evaluation system for evaluating the anti-rust performance of anti-rust oil is based on the core method, namely, the distribution of electrodes in the low resistance zone during ultrasound (T), the average value of the resistance value R, and the mean square error of the resistance value: and the anti-rust performance of the organic oil is evaluated accordingly (see Chapter 5). 41 Working principle diagram of the tester A.4 Electrode electrochemical tester Test electrode resistance R Speed requirement: Measurement error 35% Measurement error: 10% Moisture error 40% (RI×100) (1×10QR1×10\) |JB/T1052B—2005
【Informative Appendix:
Evaluation of Anti-Rust Performance of Anti-Rust Oil
For the convenience of application, according to the resistance distribution of oil film obtained by test, the anti-rust performance evaluation level is shown as follows: The same test is performed on 192 probes and 192 data samples are obtained. Let x = 100%, which represents the percentage of metal under film separation in the 192 electrode oil-desorption areas encountering the corrosive medium, which is called the metal under film corrosion degree: According to the metal under film corrosion degree, the anti-rust performance is divided into 0--5 numbers, with grade 5 having the best anti-rust performance and grade 6 having the worst corrosion performance (see Table R.1). According to s=192
, the grade criterion of the number of equivalent electrodes of the metal under the corrosion medium "impact film" can be obtained, which is also listed in Table H.1: The same grade of the two samples of the same grade will be judged according to the description in Chapter 1.1 Anti-rust performance rating
Rust resistance under rubber film
7~21
1~·25
25~·50
ay--s5
51··100
97~1922
Where:
- The sum of the electrical inputs of the two electrode resistors distributed in 1012: 19 electrical resistors distributed in 10°2. The electrical inputs of the 102 level are: Under the action of the magic medium, the metal under the film will undergo corrosion. First of all, the comparison (including positive rounding) shows that the numerical value is excellent in anti-rust performance, (
Through: the color experiment shows that the oil film in the area with low rust resistance is easy to be stable, and the metal under the film will be effective. The steel point will appear: the metal layer under the film is the potential area of the casting point, the area of ×102 is more rust-resistant, and it is difficult for the test medium to penetrate the film, and the rest of the metal will not be corroded, indicating that the metal under the film is actually corrosion-resistant. The electric number generated by the nucleus, which represents the electric number of the medium under the life of the medium, is used as an approximate method: then +0.52, which can be used to represent the equivalent electric number of the medium under the life of the medium, or the equivalent electric number of the medium under the life of the medium 9.31gR-
-192 The average value of the logarithm of the resistance of the seven plates:
Under the condition of 1005 phase return, it is relatively long, the integer value is 9.49-192 The mean square error of the logarithmic resistance values of the garbage output: (g R -Ig n)3
Reflects the dispersion or unevenness of the rust resistance of the 192 electrode areas of the oil film. Under the above reliable conditions, compare. The smaller the better:
Note: In the two probes designed for the design of the excitation element. If it is > 25%, retest. 10 Test report
Unless otherwise specified in the specification, the test report should include the following contents a) Name of the tested oil sample, size, production date, packaging: 6) Test instrument number, test date: c) Record R, ,,,, and: d) Comparison of anti-rust performance
e) Name of the operator.
Appendix A
(Normative Appendix)
Multi-electrode electrochemical test instrument
A.1 Multi-electrode electrochemical test instrument is a special instrument designed according to the principle of film DC resistance test. JB/T10528—2005
A2 The tester should be composed of two parts: the host and the test box, including display, processing, connection, control and other parts: the test box includes the test probe and the micro-channel flow interface (see Figure 1). A.3 1. Working principle: The set reference voltage is applied to 64 points and the auxiliary electrode forms a circuit (see Figure A.1), and the resistance is converted through the block. After amplification by the programmable amplifier, the test result is stored and displayed after processing by the MC. As the control core of the instrument, MC is responsible for the automatic test control of the entire instrument, including instrument detection, automatic range conversion, mechanical operation of the test box, data input, and MC1 is also responsible for the processing of test data. The numerical evaluation system for evaluating the anti-rust performance of anti-rust oil is based on the core method, namely, the distribution of electrodes in the low resistance zone during ultrasound (T), the average value of the resistance value R, and the mean square error of the resistance value: and the anti-rust performance of the organic oil is evaluated accordingly (see Chapter 5). 41 Working principle diagram of the tester A.4 Electrode electrochemical tester Test electrode resistance R Speed requirement: Measurement error 35% Measurement error: 10% Moisture error 40% (RI×100) (1×10QR1×10\) |JB/T1052B—2005
【Informative Appendix:
Evaluation of Anti-Rust Performance of Anti-Rust Oil
For the convenience of application, according to the resistance distribution of oil film obtained by test, the anti-rust performance evaluation level is shown as follows: The same test is performed on 192 probes and 192 data samples are obtained. Let x = 100%, which represents the percentage of metal under film separation in the 192 electrode oil-desorption areas encountering the corrosive medium, which is called the metal under film corrosion degree: According to the metal under film corrosion degree, the anti-rust performance is divided into 0--5 numbers, with grade 5 having the best anti-rust performance and grade 6 having the worst corrosion performance (see Table R.1). According to s=192
, the grade criterion of the number of equivalent electrodes of the metal under the corrosion medium "impact film" can be obtained, which is also listed in Table H.1: The same grade of the two samples of the same grade will be judged according to the description in Chapter 1.1 Anti-rust performance rating
Rust resistance under rubber film
7~21
1~·25
25~·50
ay--s5
51··100
97~1921 Anti-rust performance rating
Corrosion resistance under rubber film
7~21
1~·25
25~·50
ay--s5
51··100
97~1921 Anti-rust performance rating
Corrosion resistance under rubber film
7~21
1~·25
25~·50
ay--s5
51··100
97~192
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