CN109283129A - Electrode and its monitoring method for carbon steel cold-rolled steel sheet atmospheric environment corrosion monitoring - Google Patents
Electrode and its monitoring method for carbon steel cold-rolled steel sheet atmospheric environment corrosion monitoring Download PDFInfo
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- CN109283129A CN109283129A CN201710598622.2A CN201710598622A CN109283129A CN 109283129 A CN109283129 A CN 109283129A CN 201710598622 A CN201710598622 A CN 201710598622A CN 109283129 A CN109283129 A CN 109283129A
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- 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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- 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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Abstract
The present invention provides a kind of electrodes and its application method for carbon steel cold-rolled steel sheet atmospheric environment corrosion monitoring, it includes insulating sleeve, radially mutually intert in the insulating sleeve and is equipped with several first pole pieces and several pole pieces in parallel, insulating resin is filled between first pole piece and the second pole piece, the end of first pole piece and the end of the second pole piece are respectively provided with a conducting wire, and the side wall that the conducting wire passes through insulating sleeve extends outwardly.The present invention is with following the utility model has the advantages that can effectively reflect the corrosion tendency of cold-rolled steel sheet under practical circumstances in this way, so that the corrosion of steel plate is detected and be prevented.In addition, this electrode is due to can be made flake, it may be convenient to be put into packaged coil of strip, monitor the corrosion defect in coil of strip, so that the corrosion for coil of strip during storage for a long time and marine transportation prevents to provide a kind of means and method.
Description
Technical field
The invention belongs to electrochemical corrosion and protection technology field, and in particular to one kind is for monitoring ordinary carbon steel cold-rolled steel sheet
The electrode and application method of atmospheric environment corrosion.
Background technique
When atmospheric environment temperature and humidity reaches a certain range, surface of steel plate will form one layer of thin liquid film, surface of steel plate due to
Local electrochemical is uneven and forms micro cell, and electrochemical corrosion reaction occurs, surface of steel plate is caused to corrode.
Common cold-rolled steel sheet is not due to itself having good corrosion resistance and surface lacks effective protection layer and is easy to happen rust
Erosion, steel plate corrosion will form defect, reduce plate surface quality, make steel plate can not normal use.Therefore prevention cold-rolled steel sheet rust
It loses all extremely important for steel mill and user.This patent is quasi- to propose a kind of atmospheric environment corrosion monitoring electrode, for monitoring
General cold surface of steel plate electrochemical current, by the variation of corrosion current judge corrosion risk of the steel plate in atmospheric environment and
Severity.
Document and patent retrieval show there have been some electrode sensors for atmospheric corrosion current monitoring at present.
201510383050.7 have applied for a kind of atmospheric corrosiveness monitoring electrochemical sensor and its application method, and the invention is using gold
Belong to material as electrode and form galvanic couple to production dual-electrode sensor, atmospheric corrosiveness is assessed by monitoring electrode current.Cao
It offers dragon et al. and has delivered research paper about the environmentally sensitive property of Cu/Fe bipolar electrode primary battery, it is former to describe Cu/Fe bipolar electrode
The production and sensitivity effects factor of battery.But the monitoring electrode and method that these patents or document are announced are primarily directed to atmosphere
Corrosive monitoring, and environmental corrosion grade is graded and divided, since different metal material corrosion resistance is different, monitored
Corrosion current size or variation can not reflect the corrosion behavior and severity of selected metal.For example, using Cu/Fe
Bipolar electrode carries out atmospheric corrosion current monitoring, and under the damp and hot indoor environment of plum rain season, electrode current is very big, but stainless steel
Material is without corroding under this environmental condition, and ordinary carbon steel cold-rolled steel sheet is then easy to corrode.Therefore, existing
There are great limitations in terms of specific material corrosion prediction for methods and techniques.
Summary of the invention
The present invention proposes a kind of corrosion for the ordinary carbon steel cold-rolled steel sheet for being easy to happen corrosion in atmospheric corrosion environment
Electrode and its application method are monitored, corrosion row that can pointedly to straight carbon steel cold-rolled steel sheet in atmospheric environment using the electrode
To be predicted with rate, in this technical foundation, Plate Production enterprise and user can carry out in advance the corrosion behavior of steel plate
Sentence, takes prevention and control measure in time.
The present invention is achieved by the following technical solutions:
A kind of electrode for carbon steel cold-rolled steel sheet atmospheric environment corrosion monitoring comprising insulating sleeve, the insulation sleeve
Radially mutually intert in pipe and is equipped with several first pole pieces and several second pole pieces, first pole piece and the second pole in parallel
Insulating resin is filled between piece, the end of the end of the first pole piece and the second pole piece is respectively provided with a conducting wire, and the conducting wire is worn
The side wall for crossing insulating sleeve extends outwardly.
Preferably, the thickness of first pole piece and the second pole piece is 0.5mm.
Preferably, the material of first pole piece is platinum, it is preferable that the purity of platinum is greater than 99.9%
Preferably, the material of second pole piece is gapless atomic steel.
Preferably, the following element in the gapless atomic steel containing percentage:
C:0.001~0.006%；
Si:0~0.05%；
Mn:0.10~0.30%；
P:0.03~0.10%；
S:0.003~0.02%；
Ti:0.01~0.03%；
Nb:0.005~0.02%
Fe: surplus.
Preferably, the distance between first pole piece and the second pole piece are 0.25~0.50mm.
A kind of monitoring method based on the electrode for being previously described for carbon steel cold-rolled steel sheet atmospheric environment corrosion monitoring comprising
Following steps:
S1: the electrode is placed in 25 DEG C ± 1 DEG C of temperature, in the indoor environment of relative humidity 60%；
S2: two conducting wires in electrode being connect with current detecting instrument, continuous measuring electrode corrosion current 1 hour, is obtained
The average value I of electrode corrosion electric currenta；
S3: electrode and monitored cold-rolled steel sheet are placed under same environmental conditions, continuously monitored, if electrode current
I is greater than 10 times of Ia, illustrate steel plate serious corrosion in the present context.
Compared with prior art, the present invention have it is following the utility model has the advantages that
Common cold-rolled steel sheet is easy to happen corrosion in hygrothermal environment storage since corrosion resistance is low.Electricity used in the present invention
One of pole material is a kind of representative IF steel, and corrosion performance can reflect the corrosion row of most straight carbon steel cold-rolled steel sheet
For.Therefore it can effectively reflect the corrosion tendency of cold-rolled steel sheet under practical circumstances in this way, thus the corrosion to steel plate
It is detected and is prevented.In addition, this electrode is due to can be made flake, it may be convenient to be put into packaged coil of strip, supervise
The corrosion defect in coil of strip is surveyed, so that the corrosion prevention for coil of strip during long-time storage and marine transportation provides a kind of means
And method.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon:
Fig. 1 is the structural schematic diagram of the electrode for carbon steel cold-rolled steel sheet atmospheric environment corrosion monitoring in the present invention；
Fig. 2 is Fig. 1 sectional view；
Fig. 3 laboratory environment electrode current size and situation of change；
Fig. 4 is finishing workshop cold-rolled steel sheet corrosion current monitoring result for 24 hours；
Fig. 5 is cold rolling plate face locally corrosion situation；
In figure: 1, insulating sleeve；2, the first pole piece；3, the second pole piece；4, insulating resin；5, conducting wire.
Specific embodiment
The present invention is described in detail combined with specific embodiments below.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention
Protection scope.
Structure such as Fig. 1 and figure of a kind of electrode for carbon steel cold-rolled steel sheet atmospheric environment corrosion monitoring of the present invention
Shown in 2 comprising insulating sleeve 1, if it is radially mutually interspersed in insulating sleeve 1 and be equipped in parallel several first pole pieces 2 and
Dry pole piece 3 is filled with insulating resin 4 between first pole piece 2 and the second pole piece 3, the end of the first pole piece 1 and the second pole piece 2
End is respectively provided with a conducting wire 5, and the side wall that two conducting wires 5 both pass through insulating sleeve extends outwardly.
Embodiment
1) selecting purity for 99.9%, the Pt piece with a thickness of 0.5mm and the cold rolling B170P1 steel plate with a thickness of 0.5mm is electricity
Pole, the main component of B170P1 steel plate are 0.002%C, 0.051%Si, 0.196%Mn, 0.080%P, 0.006%S,
0.019%Ti, 0.013%Nb, surplus are iron；
2) Pt piece and B170P1 plate are cut into the electrode slice that width is 3mm, respectively as the first pole piece and the second pole piece,
After the copper conductor soldering connection of diameter 0.2mm is used in one end of Pt piece and one end of B170P1 plate respectively, it is put into acetone with ultrasound
Cleaning 5 minutes, then with being dried up after alcohol rinse.Pt piece and B170P1 plate are alternately arranged, 0.25mm is divided into, conducting wire is drawn
Insulating sleeve.Insulating sleeve height is 5mm, diameter 25mm.Using the cold edge material of transparent epoxy resin, consolidate volume ratio 1.2 by liquid:
2, it is poured slowly into casing after mixing evenly, is hardened through 10h or more, confirming under flashlight irradiation does not have visible gas between piece and piece
Bubble is successively polished electrode face using 400#, 600#, 1000# sand paper, then with drying up after alcohol rinse；
3) electrode is put in temperature is 25 DEG C ± 1 DEG C, in the laboratory of 60%RH, then by two conducting wires of electrode and electrification
It learns work station measuring electrode to be connected, measures current-time curvel, measure average current Ia=10.12nA.
4) electrode is moved into cold rolling finishing workshop, is put in 1 meter away from cold-reduced sheet stacking left-right position, by two conducting wires of electrode with
Electrochemical workstation measuring electrode is connected, and continuously measures current-time curvel, as a result as shown in Figure 3.Current monitoring number in for 24 hours
It is as shown in Figure 4 according to situation of change.Electric current starts to increase rapidly about after 4h as seen from the figure, illustrates that corrosion accelerates, steel plate
Surface corrosion risk increases.It is as shown in Figure 5 to the rust spot situation of surface of cold-rolled steel plate detection discovery afterwards for 24 hours.
In conclusion only presently preferred embodiments of the present invention, is not used to limit the scope of implementation of the present invention, it is all according to
Equivalent changes and modifications carried out by shape described in scope of the invention as claimed, construction, feature and spirit should be included in this
In the scope of the claims of invention.
Claims (7)
1. a kind of electrode for carbon steel cold-rolled steel sheet atmospheric environment corrosion monitoring, which is characterized in that described including insulating sleeve
Radially mutually intert in insulating sleeve and is equipped with several first pole pieces and several pole pieces, first pole piece and second in parallel
Insulating resin is filled between pole piece, the end of the end of the first pole piece and the second pole piece is respectively provided with a conducting wire, the conducting wire
Side wall across insulating sleeve extends outwardly.
2. being used for the electrode of carbon steel cold-rolled steel sheet atmospheric environment corrosion monitoring as described in claim 1, which is characterized in that described
The thickness of first pole piece and the second pole piece is 0.5mm.
3. being used for the electrode of carbon steel cold-rolled steel sheet atmospheric environment corrosion monitoring as claimed in claim 1 or 2, which is characterized in that
The material of first pole piece is platinum.
4. being used for the electrode of carbon steel cold-rolled steel sheet atmospheric environment corrosion monitoring as claimed in claim 1 or 2, which is characterized in that
The material of second pole piece is gapless atomic steel.
5. being used for the electrode of carbon steel cold-rolled steel sheet atmospheric environment corrosion monitoring as claimed in claim 4, which is characterized in that described
Following element in gapless atomic steel containing percentage:
6. being used for the electrode of carbon steel cold-rolled steel sheet atmospheric environment corrosion monitoring as described in claim 1, which is characterized in that described
The distance between first pole piece and the second pole piece are 0.25~0.50mm.
7. a kind of monitoring side based on the electrode described in claim 1 for carbon steel cold-rolled steel sheet atmospheric environment corrosion monitoring
Method, which comprises the steps of:
S1: the electrode is placed in 25 DEG C ± 1 DEG C of temperature, in the indoor environment of relative humidity 60%；
S2: two conducting wires in electrode being connect with current detecting instrument, continuous measuring electrode corrosion current 1 hour, obtains electrode
The average value I of corrosion currenta；
S3: electrode and monitored cold-rolled steel sheet are placed under same environmental conditions, continuously monitored, if electrode current is greater than
10 times of Ia, illustrate steel plate serious corrosion in the present context.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710598622.2A CN109283129B (en) | 2017-07-21 | 2017-07-21 | Electrode for monitoring atmospheric environment corrosion of carbon steel cold-rolled steel plate and monitoring method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710598622.2A CN109283129B (en) | 2017-07-21 | 2017-07-21 | Electrode for monitoring atmospheric environment corrosion of carbon steel cold-rolled steel plate and monitoring method thereof |
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| CN109283129A true CN109283129A (en) | 2019-01-29 |
| CN109283129B CN109283129B (en) | 2021-02-19 |
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| CN201710598622.2A Active CN109283129B (en) | 2017-07-21 | 2017-07-21 | Electrode for monitoring atmospheric environment corrosion of carbon steel cold-rolled steel plate and monitoring method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110542647A (en) * | 2019-08-20 | 2019-12-06 | 北京科技大学 | electronic and electric appliance environment corrosivity characteristic detection circuit and method |
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| CN202916172U (en) * | 2012-11-05 | 2013-05-01 | 常洪雷 | Cement-based corrosion current sensor |
| CN203299102U (en) * | 2013-06-19 | 2013-11-20 | 国家电网公司 | Electrode device for measuring corrosion rate of soil |
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| CN2047377U (en) * | 1989-05-20 | 1989-11-08 | 华东输油管理局 | Cell type gas corrosive probe |
| US4994159A (en) * | 1990-01-23 | 1991-02-19 | The United States Of America As Represented By The Secretary Of The Navy | Method and apparatus for measuring corrosion beneath thin films |
| CN1504737A (en) * | 2002-11-29 | 2004-06-16 | 宝山钢铁股份有限公司 | Electrochemical method for rapidly evaluating rustiness action of annealed cold-rolled plate |
| JP2008164467A (en) * | 2006-12-28 | 2008-07-17 | Ntn Corp | Corrosion environment sensor and sensor system |
| CN202916172U (en) * | 2012-11-05 | 2013-05-01 | 常洪雷 | Cement-based corrosion current sensor |
| CN203299102U (en) * | 2013-06-19 | 2013-11-20 | 国家电网公司 | Electrode device for measuring corrosion rate of soil |
| CN103808648A (en) * | 2013-10-17 | 2014-05-21 | 中国石油化工股份有限公司 | Atmospheric environment corrosion testing device for high sulfur natural gas purification plant |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110542647A (en) * | 2019-08-20 | 2019-12-06 | 北京科技大学 | electronic and electric appliance environment corrosivity characteristic detection circuit and method |
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| CN109283129B (en) | 2021-02-19 |
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