CN108760553A - A kind of corrosion proof method after quickly testing self-lubricating steel plate cold deformation processing - Google Patents
A kind of corrosion proof method after quickly testing self-lubricating steel plate cold deformation processing Download PDFInfo
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- CN108760553A CN108760553A CN201810801743.7A CN201810801743A CN108760553A CN 108760553 A CN108760553 A CN 108760553A CN 201810801743 A CN201810801743 A CN 201810801743A CN 108760553 A CN108760553 A CN 108760553A
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- steel plate
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- lubricating steel
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
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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
Abstract
The present invention relates to a kind of corrosion proof methods after quickly test self-lubricating steel plate cold deformation processing, including：The friction testing of self-lubricating steel plate, electro-chemical test early-stage preparations stablize the open-circuit voltage of self-lubricating steel plate, survey its electrochemical impedance spectroscopy.Step of the present invention is simple, easy to operate, and experimental period is short, reliable test result.
Description
Technical field
The invention belongs to measure corrosion resistance method field, more particularly to a kind of quickly test self-lubricating steel plate cold deformation
Corrosion proof method after processing.
Background technology
Cold deformation is metal in recrystallization temperature deformation as carried out below, and wherein cold stamping is exactly metal plastic deformation
One of basic skills.Cold deformation processing is essential technical process in various product production, but work metal and mould
Existing relative motion can generate friction between two contact surfaces between tool, make workpiece surface that scratch abrasion occur, to pole
The quality of earth effect product.In Conventional process mainly by adding liquid lubricant come reduce work metal with
Friction coefficient between mold, to mitigate the fretting wear to workpiece.But traditional handicraft not only increases the production of enterprise
Process and production cost, and the chemical substance in the degreasing agent subsequently used will also result in serious pollution to environment.
Corrosion is also metal material common problem, and all kinds of losses are huge caused by corrosion every year for all trades and professions,
Wherein electrochemical corrosion is that metal is most common, most common corrosion phenomenon.Since there is presently no abilities to prevent completely corruption by people
The generation of erosion is usually all to delay gold using various preventive means such as electrochemical protection, surface seal coat and corrosion inhibition for metal
Belong to the rate of corrosion, wherein coating protection is the most extensive in the anti-corrosion application of metal material.
To solve the above-mentioned problems, self-lubricating steel plate comes into being.The self-lubricating coat in use of self-lubricating steel plate itself not only may be used
To serve as the lubricant between mold and steel plate, simplify production technology, reduces production cost, and environmentally protective；Self-lubricating simultaneously
Coating can form separation layer between corrosive medium and matrix steel, can effectively improve the corrosion resistance of metal, extend making for product
Use the service life.
Although self-lubricating coat in use can significantly mitigate the friction in cold deformation process between mold and self-lubricating steel plate
Abrasion, but friction behavior between the two still can cause self-lubricating coat in use certain damage, to influence coating to base
The barrier propterty of body steel plate shortens the service life of product.
Invention content
Technical problem to be solved by the invention is to provide anti-corrosion after a kind of quickly test self-lubricating steel plate cold deformation processing
Property method, with overcome in the prior art, period low to the corrosion resistance variation testing efficiency of self-lubricating steel plate after impaired it is long, test
Inaccurate defect.
One kind of the present invention quickly testing corrosion proof method after self-lubricating steel plate cold deformation processing, including：
(1) friction testing of self-lubricating steel plate：Apply load by change and friction velocity adds to simulate different cold deformations
Friction behavior during work between self-lubricating steel plate and mold, to ensure the coating stress degree of heterogeneity and thickness with
Practical condition is almost the same；
(2) electro-chemical test early-stage preparations：The sodium chloride solution of preparation 3.5% is as corrosive medium solution, to step (1)
Self-lubricating steel plate after middle friction carries out edge sealing processing, while ensuring that the wear area that each sample retains is identical；
(3) three-electrode system is used, the open-circuit voltage of the self-lubricating steel plate in stabilizing step (2) after edge sealing is measured from moistening
The electrochemical impedance spectroscopy of sliding steel plate.
Three-electrode system is in the step (3)：Reference electrode is saturated calomel electrode, and auxiliary electrode is platinum electrode, work
It is edge sealing treated self-lubricating steel plate to make electrode.
It is 30min to stablize the open-circuit voltage time in the step (3).
The parameter of the electrochemical impedance spectroscopy of measurement self-lubricating steel plate is in the step (3)：Initial potential is after stablizing
Open-circuit voltage, response excursion 0.01v, frequency are 0.01hz~100000hz.
Advantageous effect
The present invention mainly organically combines frictional experiment and corrosion experiment, and practical cold deformation is simulated using tribology experiments
Process, the true degree of impairment for restoring self-lubricating coat in use, experimental result is also closer to enterprise's production requirement；Meanwhile electrification
Learning corrosion experiment has the characteristics that efficient, the period is short, can be quickly obtained self-lubricating steel plate table after the damage of self-lubricating steel plate stress
The variation of the destruction situation and self-lubricating steel plate corrosion resisting property of finishing coat can effectively instruct enterprise to coating performance into one
Step research and development, greatly shorten life cycle of the product.This method can effectively improve to self-lubricating steel plate after cold deformation processing
The testing efficiency of product surface performance.And this method step is simple, easy to operate, and experimental period is short, reliable test result.
Description of the drawings
Fig. 1 is the AC impedance spectral curve of self-lubricating steel plate in embodiment 1；
Fig. 2 is the AC impedance spectral curve of self-lubricating steel plate in embodiment 2；
Fig. 3 is the AC impedance spectral curve of self-lubricating steel plate in embodiment 3.
Specific implementation mode
Present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are merely to illustrate the present invention
Rather than it limits the scope of the invention.In addition, it should also be understood that, after reading the content taught by the present invention, people in the art
Member can make various changes or modifications the present invention, and such equivalent forms equally fall within the application the appended claims and limited
Range.
Embodiment 1
(1) prepare sample：1mm self-lubricating coat in use steel plates；Apply load：50N；Friction velocity：3mm/s,6mm/s,9mm/
S, sliding distance：20mm；
(2) sodium chloride solution of mass fraction 3.5% is prepared as corrosive medium solution, to moistening certainly by friction treatment
Sliding steel plate carries out edge sealing processing, only the exposed part for having polishing scratch；
(3) three-electrode system is used, reference electrode is saturated calomel electrode, and auxiliary electrode is platinum electrode, and working electrode is
Edge sealing treated self-lubricating steel plate in step (2) reads open-circuit voltage values, setting exchange resistance after stablizing open-circuit voltage 30min
Anti- spectral curve parameter：Initial potential is open-circuit voltage, and response excursion 0.01v, frequency range 0.01hz~100000hz are finally obtained
Obtain AC impedance spectral curve.
By AC impedance spectral curve (as shown in Figure 1), shadow of the differentiated friction speed to corrosion resistance coating energy can be obtained
It rings.Friction velocity is bigger as we can see from the figure, and the corrosion resisting property of self-lubricating steel plate is poorer, this just illustrate self-lubricating coat in use by
Fretting wear it is also more serious.
Embodiment 2
(1) prepare sample：1mm self-lubricating coat in use steel plates；Apply load：500N；Friction velocity：3mm/s,6mm/s,9mm/
S, sliding distance：20mm；
(2) prepare mass fraction be 3.5% sodium chloride solution be used as corrosive medium solution, to by friction treatment oneself
Lubricated steel sheet carries out edge sealing processing, only the exposed part for having polishing scratch；
(3) three-electrode system is used, reference electrode is saturated calomel electrode, and auxiliary electrode is platinum electrode, and working electrode is
Edge sealing treated self-lubricating steel plate in step (2) reads open-circuit voltage values, setting exchange resistance after stablizing open-circuit voltage 30min
Anti- spectral curve parameter：Initial potential is open-circuit voltage, and response excursion 0.01v, frequency range 0.01hz~100000hz are finally obtained
Obtain AC impedance spectral curve.
By AC impedance spectral curve (as shown in Figure 2), variation tendency same as Example 1 can be obtained, but with
It application load to become larger, the damage that self-lubricating coat in use is subject to is more serious, or even can be worn through, and rub caused corrosion resistance coating
Variation become apparent from intuitively compared with embodiment 1.
Embodiment 3
(1) prepare sample：2mm self-lubricating coat in use steel plates；Apply load：500N；Friction velocity：3mm/s,6mm/s,9mm/
S, sliding distance：20mm；
(2) sodium chloride solution of mass fraction 3.5% is prepared as corrosive medium solution, to moistening certainly by friction treatment
Sliding steel plate carries out edge sealing processing, only the exposed part for having polishing scratch；
(3) three-electrode system is used, reference electrode is saturated calomel electrode, and auxiliary electrode is platinum electrode, and working electrode is
Edge sealing treated self-lubricating steel plate in step (2) reads open-circuit voltage values, setting exchange resistance after stablizing open-circuit voltage 30min
Anti- spectral curve parameter：Initial potential is open-circuit voltage, and response excursion 0.01v, frequency range 0.01hz~100000hz are finally obtained
Obtain AC impedance spectral curve.
By AC impedance spectral curve (as shown in Figure 3), it can be found that under same experimental conditions, self-lubricating coat in use is got over
The corrosion resisting property of thickness, self-lubricating steel plate is better, this just enlightens us can thicken coating as far as possible in allowed limits, from
And preferably play the protective action of coating.
By examples detailed above it can be found that in cold deformation processing (mainly cold stamping), forming speed and application load
It is two important factors for influencing friction behavior in process.
Currently, the patent in relation to galvanized sheet corrosion resistance research under actual production operating mode, is mainly followed by spraying/drying
Corrosive environment in the corrosion simulated all kinds of productions of ring, then probe into its corrosion proof change by observing galvanized sheet modification of surface morphology
Change.By document disclosed in access and patent, do not find to utilize galvanized sheet in electrochemical techniques test cold forming processing
The method of its corrosion resistance of surface after molding.The present invention simulates contrast experiment by a series of tribology, recycles electrochemical corrosion
Test rapid evaluation, so that it may to establish systematically analysis mechanisms for different Sheet Metal Forming Technologies, to greatly shorten properties of product
Optimization cycle, improve the use comprehensive performance of product.
Claims (4)
1. a kind of corrosion proof method after quickly test self-lubricating steel plate cold deformation processing, including：
(1) load and friction velocity are applied by change come simulate in different cold deformation process self-lubricating steel plate and mold it
Between friction behavior；
(2) 3.5% sodium chloride solution is selected to be used as corrosive medium solution, to the self-lubricating steel plate after rubbing in step (1) into
The processing of row edge sealing, while ensuring that the wear area that each sample retains is identical；
(3) use three-electrode system, in stabilizing step (2) after edge sealing self-lubricating steel plate open-circuit voltage, measure self-lubricating steel plate
Electrochemical impedance spectroscopy.
2. according to the method described in claim 1, it is characterized in that, three-electrode system is in the step (3)：Reference electrode is
Saturated calomel electrode, auxiliary electrode are platinum electrode, and working electrode is edge sealing treated self-lubricating steel plate.
3. according to the method described in claim 1, it is characterized in that, open-circuit voltage stabilization time is in the step (3)
30min。
4. according to the method described in claim 1, it is characterized in that, measuring the electrochemistry of self-lubricating steel plate in the step (3)
The parameter of impedance spectrum is：Initial potential be stablize after open-circuit voltage, response excursion 0.01v, frequency be 0.01hz~
100000hz。
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| CN101885250A (en) * | 2009-05-12 | 2010-11-17 | 比尔安达(上海)润滑材料有限公司 | Self-lubricating metallic material |
| CN202054882U (en) * | 2011-03-29 | 2011-11-30 | 景德镇陶瓷学院 | Low-friction wear-resisting coating |
| CN108251783A (en) * | 2017-12-21 | 2018-07-06 | 中国石油大学(华东) | A kind of preparation method of the micro- texture surface vacuum plasma self-lubricating coat in use of laser |
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2018
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Patent Citations (3)
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| CN101885250A (en) * | 2009-05-12 | 2010-11-17 | 比尔安达(上海)润滑材料有限公司 | Self-lubricating metallic material |
| CN202054882U (en) * | 2011-03-29 | 2011-11-30 | 景德镇陶瓷学院 | Low-friction wear-resisting coating |
| CN108251783A (en) * | 2017-12-21 | 2018-07-06 | 中国石油大学(华东) | A kind of preparation method of the micro- texture surface vacuum plasma self-lubricating coat in use of laser |
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