CN110257813A - Antioxidant wear-resistant composite coating - Google Patents
Antioxidant wear-resistant composite coating Download PDFInfo
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- CN110257813A CN110257813A CN201910620378.4A CN201910620378A CN110257813A CN 110257813 A CN110257813 A CN 110257813A CN 201910620378 A CN201910620378 A CN 201910620378A CN 110257813 A CN110257813 A CN 110257813A
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- 238000000576 coating method Methods 0.000 title claims abstract description 132
- 239000011248 coating agent Substances 0.000 title claims abstract description 130
- 239000003963 antioxidant agent Substances 0.000 title claims abstract description 35
- 230000003078 antioxidant effect Effects 0.000 title claims abstract description 35
- 239000002131 composite material Substances 0.000 title claims abstract description 33
- 239000000203 mixture Substances 0.000 claims abstract description 23
- 239000011159 matrix material Substances 0.000 claims abstract description 22
- 239000011195 cermet Substances 0.000 claims abstract description 18
- 229910052727 yttrium Inorganic materials 0.000 claims abstract description 9
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- 229910052593 corundum Inorganic materials 0.000 claims description 6
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 6
- 238000000137 annealing Methods 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 abstract description 11
- 239000010959 steel Substances 0.000 abstract description 11
- 235000006708 antioxidants Nutrition 0.000 description 26
- 238000012360 testing method Methods 0.000 description 11
- 239000000306 component Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000005299 abrasion Methods 0.000 description 5
- 239000000919 ceramic Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 208000021017 Weight Gain Diseases 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 230000003026 anti-oxygenic effect Effects 0.000 description 3
- 229910010293 ceramic material Inorganic materials 0.000 description 3
- 239000008236 heating water Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 230000004584 weight gain Effects 0.000 description 3
- 235000019786 weight gain Nutrition 0.000 description 3
- 238000005524 ceramic coating Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229940098458 powder spray Drugs 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/058—Alloys based on nickel or cobalt based on nickel with chromium without Mo and W
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/005—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides comprising a particular metallic binder
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/12—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on oxides
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/001—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides
- C22C32/0015—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides with only single oxides as main non-metallic constituents
- C22C32/0026—Matrix based on Ni, Co, Cr or alloys thereof
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
Abstract
The invention discloses a kind of antioxidant wear-resistant composite coatings, it is characterized in that, at least three-layer coating including being coated in matrix surface, first coating is the alloy-layer being made of Ni, 20%~30% Co, 10%~20% Cr, 3%~12% Al, 0.5%~5% Y according to weight percent content 40%~60%, and second coating is by the Al according to weight percent content 10%~40%2O3, 60%~90% NiCo23Cr17Al12Y0.5The cermet coating of composition, third coating are by the Al according to weight percent content 50%~85%2O3, 15%~50% NiCo23Cr17Al12Y0.5The cermet coating of composition.Antioxidant wear-resistant composite coating provided by the invention has stronger inoxidizability and wear resistance, and the steel plate of better quality can be produced using the furnace roller with the coating.
Description
Technical field
The present invention relates to a kind of antioxidant wear-resistant composite coatings.
Background technique
With the high speed development of national economy, the popularity rate of family car is higher and higher, and Chinese automobile demand amount is substantially
Degree increases, and the demand to automobile board is also increasing, and the requirement to plate surface quality is also higher and higher, and plate surface matter
The quality of amount depends on core component --- the furnace roller of production plate.
During producing steel plate, need furnace roller for a long time be in high temperature, high speed working environment in, the meeting of furnace roller surface
It aoxidizes, roll surface finish can deteriorate with the generation of oxidation, influence the surface quality of steel plate.In addition, furnace roller according to
Frictional force between steel plate drives steel plate mobile, and roll surface is easy to wear, and roll surface will appear pit, scratch after abrasion
The defects of, thus during driving steel plate mobile can surface of steel plate leave pit, pull, scratch the defects of, it is difficult to it is raw
The steel plate of output high-quality.
Summary of the invention
Purpose of the invention is to overcome the shortcomings in the prior art, provides a kind of antioxidant wear-resistant composite coating.
In order to achieve the above object, the invention is realized by the following technical scheme:
Antioxidant wear-resistant composite coating, which is characterized in that at least three-layer coating including being coated in matrix surface, first applies
Layer for by according to weight percent content 40%~60% Ni, 20%~30% Co, 10%~20% Cr, 3%~
12% Al, 0.5%~5% Y composition alloy-layer, second coating be by according to weight percent content 10%~40%
Al2O3, 60%~90% NiCo23Cr17Al12Y0.5The cermet coating of composition, third coating are by containing according to weight percent
The Al of amount 50%~85%2O3, 15%~50% NiCo23Cr17Al12Y0.5The cermet coating of composition.
Preferably, the first coating be by according to weight percent content 45%~55% Ni, 20%~28%
Co, 15%~20% Cr, 3%~10% Al, 2%~5% Y composition alloy-layer, the second coating be by pressing
According to the Al of weight percent content 25%~40%2O3, 60%~75% NiCo23Cr17Al12Y0.5The cermet coating of composition,
Third coating is by the Al according to weight percent content 70%~85%2O3, 15%~30% NiCo23Cr17Al12Y0.5Group
At cermet coating.
Preferably, the first coating is coated in described matrix surface, forms 1~20 μm of thickness.
Preferably, the second coating is coated in the first coating, forms 10~30 μm of thickness.
Preferably, the third coating is coated in the second coating, forms 10~30 μm of thickness.
Preferably, described matrix is annealing furnace roller.
It is a further object to provide a kind of preparation methods of antioxidant wear-resistant composite coating.
To achieve the above object, the invention is realized by the following technical scheme:
The preparation method of antioxidant wear-resistant composite coating, which is characterized in that spraying equipment is used, it successively will at least three layers painting
The dusty material of layer is coated on matrix, comprising the following steps:
It will be according to the Cr of the Co of the Ni of weight percent content 40%~60%, 20%~30%, 10%~20%, 6%
~12% Al, 0.5%~5% the alloy powder of Y composition spray to described matrix surface and form the with a thickness of 1~20 μm
One coating；
It will be according to the Al of weight percent content 10%~40%2O3, 60%~90% NiCo23Cr17Al12Y0.5Composition
Metal ceramic powder spray in the first coating and formed with a thickness of 10~30 μm of second coating；
It will be according to the Al of weight percent content 50%~85%2O3, 15%~50% NiCo23Cr17Al12Y0.5Composition
Metal ceramic powder spray in the second coating and formed with a thickness of 10~30 μm of third coating.
Preferably, described matrix is annealing furnace roller.
It is a further object to provide a kind of antioxidant wear-resistant furnace rollers.
To achieve the above object, the invention is realized by the following technical scheme:
Antioxidant wear-resistant furnace roller, which is characterized in that the antioxidant wear-resistant including matrix and coated in described matrix surface is multiple
Coating is closed, the antioxidant wear-resistant composite coating includes at least three-layer coating, wherein first coating is by according to weight percent
The Ni of content 40%~60%, 20%~30% Co, 10%~20% Cr, 3%~12% Al, 0.5%~5% Y
The alloy-layer of composition, second coating are by the Al according to weight percent content 10%~40%2O3, 60%~90%
NiCo23Cr17Al12Y0.5The cermet coating of composition, third coating are by according to weight percent content 50%~85%
Al2O3, 15%~50% NiCo23Cr17Al12Y0.5The cermet coating of composition.
Preferably, the first coating be by according to weight percent content 45%~55% Ni, 20%~28%
Co, 15%~20% Cr, 3%~10% Al, 2%~5% Y composition alloy-layer, the second coating be by pressing
According to the Al of weight percent content 25%~40%2O3, 60%~75% NiCo23Cr17Al12Y0.5The cermet coating of composition,
Third coating is by the Al according to weight percent content 70%~85%2O3, 15%~30% NiCo23Cr17Al12Y0.5Group
At cermet coating.
Preferably, the first coating is coated in described matrix surface, forms 1~20 μm of thickness.
Preferably, the second coating is coated in the first coating, forms 10~30 μm of thickness.
Preferably, the third coating is coated in the second coating, forms 10~30 μm of thickness.
Preferably, described matrix is annealing furnace roller.
Antioxidant wear-resistant composite coating provided by the invention has stronger inoxidizability and wear resistance, should using having
The furnace roller of antioxidant wear-resistant composite coating can produce the steel plate of better quality, meanwhile, it also extends this furnace roller and is producing
Service life during steel plate, reduces maintenance cost.
In antioxidant wear-resistant composite coating provided by the invention, the alloy-layer as first coating is coated in matrix and two layers
Cermet coating improves the bond strength between composite coating and matrix, reduces production time longer rear furnace roller surface and applies
The case where layer is fallen off；Meanwhile the cermet coating as second, third coating, it is combined by Ni, Co, Cr, Al, Y and to be formed
Alloy has high temperature resistant, anti-oxidant and hot corrosion resistance, then by the way that ceramic material Al is added2O3Increase this cermet
The wear resistance of layer, further ensure furnace roller with the composite coating for a long time high temperature, high speed running under produce
The steel plate of high quality.
The preparation method of antioxidant wear-resistant composite coating provided by the invention is easy to operate, completes on traditional furnace roller surface
Spraying reduces processing and maintenance cost.
Detailed description of the invention
Fig. 1 is the front view of the furnace roller in the present invention with antioxidant wear-resistant composite coating.
Fig. 2 is the A-A cross-sectional view of Fig. 1.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawing:
Antioxidant wear-resistant composite coating in the embodiment of the present invention, at least three-layer coating including being coated in matrix surface,
Furnace roller 10 with the antioxidant wear-resistant composite coating is as depicted in figs. 1 and 2.Furnace roller 10 includes matrix 110 and antioxidant wear-resistant
Composite coating 120, wherein matrix 110 is traditional annealing furnace roller, and antioxidant wear-resistant composite coating 120 includes first coating
121, second coating 122 and third coating 123.
First coating 121 be by according to weight percent content 40%~60% Ni, 20%~30% Co, 10%~
The alloy-layer that 20% Cr, 3%~12% Al, 0.5%~5% Y are formed, second coating 122 are by according to weight percent
Than the Al of content 10%~40%2O3, 60%~90% NiCo23Cr17Al12Y0.5The cermet coating of composition, third coating
123 is by the Al according to weight percent content 50%~85%2O3, 15%~50% NiCo23Cr17Al12Y0.5The gold of composition
Belong to ceramic layer.
The weight percentage of each component content of the first coating 121 of antioxidant wear-resistant composite coating 120 is such as in embodiment 1-8
Shown in table one:
Table one
| Embodiment | Ni/% | Co/% | Cr/% | Al/% | Y/% |
| 1 | 40 | 30 | 20 | 9.5 | 0.5 |
| 2 | 50 | 27 | 6 | 12 | 5 |
| 3 | 60 | 20 | 10 | 6 | 4 |
| 4 | 55 | 25 | 15 | 3.5 | 1.5 |
| 5 | 50 | 23 | 15 | 10 | 2 |
| 6 | 45 | 28 | 20 | 4 | 3 |
| 7 | 45 | 25 | 15 | 10 | 5 |
| 8 | 55 | 20 | 20 | 3 | 2 |
The weight percentage of each component content of the second coating 122 of antioxidant wear-resistant composite coating 120 is such as in embodiment 1-8
Shown in table two:
Table two
| Embodiment | Al2O3/ % | Ni/% | Co/% | Cr/% | Al/% | Y/% |
| 1 | 10 | 42.75 | 20.7 | 15.3 | 10.8 | 0.45 |
| 2 | 12 | 41.8 | 20.24 | 14.96 | 10.56 | 0.44 |
| 3 | 15 | 40.375 | 19.55 | 14.45 | 10.2 | 0.425 |
| 4 | 18 | 38.95 | 18.86 | 13.94 | 9.84 | 0.41 |
| 5 | 25 | 35.625 | 17.25 | 12.75 | 9 | 0.375 |
| 6 | 30 | 33.25 | 16.1 | 11.9 | 8.4 | 0.35 |
| 7 | 35 | 30.875 | 14.95 | 11.05 | 7.8 | 0.325 |
| 8 | 40 | 28.5 | 13.8 | 10.2 | 7.2 | 0.3 |
The weight percentage of each component content of the third coating 123 of antioxidant wear-resistant composite coating 120 is such as in embodiment 1-8
Shown in table three:
Table three
| Embodiment | Al2O3/ % | Ni/% | Co/% | Cr/% | Al/% | Y/% |
| 1 | 50 | 23.75 | 11.5 | 8.5 | 6 | 0.25 |
| 2 | 55 | 21.375 | 10.35 | 7.65 | 5.4 | 0.225 |
| 3 | 60 | 19 | 9.2 | 6.8 | 4.8 | 0.2 |
| 4 | 65 | 16.625 | 8.05 | 5.95 | 4.2 | 0.175 |
| 5 | 70 | 14.25 | 6.9 | 5.1 | 3.6 | 0.15 |
| 6 | 75 | 11.875 | 5.75 | 4.25 | 3 | 0.125 |
| 7 | 80 | 9.5 | 4.6 | 3.4 | 2.4 | 0.1 |
| 8 | 85 | 7.125 | 3.45 | 2.55 | 1.8 | 0.075 |
The preparation method of antioxidant wear-resistant composite coating 120 is using spraying equipment, by first coating 121, second coating
122 and third coating 123 dusty material be coated in matrix 110 on, comprising the following steps:
110 surface shape of matrix will be sprayed to according to the alloy powder that weight percentage of each component content obtains shown in table one
At the first coating 121 with a thickness of 1~20 μm；
First coating will be sprayed to according to the metal ceramic powder that weight percentage of each component content obtains shown in table two
The second coating 122 with a thickness of 10~30 μm is formed on 121；
Second coating will be sprayed to according to the metal ceramic powder that weight percentage of each component content obtains shown in table three
The third coating 123 with a thickness of 10~30 μm is formed on 122.
The spraying to matrix 110 is completed according to above-mentioned steps, obtains the furnace roller with antioxidant wear-resistant composite coating 120
10.The technical parameter of the furnace roller of furnace roller 10 and direct coated ceramic material that embodiment 1-8 is obtained is as shown in Table 4:
Table four
Wherein, the antioxygenic property of coating can be measured by 1100 DEG C of 48h oxidation weight gains, and the four sides of test block is applied
There is the coating material of each embodiment, then this test block is put into chamber type electric resistance furnace, is heated to keep the temperature 48h at 1100 DEG C, take
It weighs after cooling down out, the weight gain of unit of account chronomere area coating；The unit time weight gain of unit area coating is fewer, resists
Oxidation susceptibility is stronger, on the contrary then weaker.
The abrasion loss amount of coating can be calculated by the abrasion loss under 900 DEG C of high temperature, be tested by high temperature friction and wear
Machine carries out wear test to the test block of the above-mentioned coating material for being coated with each embodiment respectively, in 900 DEG C of test temperature, revolving speed
Under 150rpm, test pressure 15N, stroke 15mm is tested, is tested 5 minutes, the weight of the test block before and after wear test, meter are weighed
Calculate abrasion loss weight；Abrasion loss weight is bigger, and wear resistance is poorer.
The thermal shock resistance properties of coating is the heating water cooling number for making coating shedding by measuring, and is coated with each embodiment for above-mentioned
Coating material test block be heated to 1200 DEG C keep the temperature 20 minutes, cooled down into the water after taking-up, then observe coating shedding feelings
Condition；Repeat-heating water cooling operation, until coating shedding area is more than the 2% of the coating gross area；Heating water cooling before coating shedding
Number is more, and thermal shock resistance is better, on the contrary then poorer.
The bond strength of coating is then to be tested to obtain by tensile sample, and the coating material of each embodiment is sprayed to
Tensile sample is made by adhesive bond in mating plate end face；Extension test is carried out using omnipotent mechanics machine, records coating
Maximum load when falling off, maximum load value is bigger, then bond strength is bigger.
Although can be seen that the furnace roller of direct coated ceramic material in the result table four obtained by above-mentioned comparative test
Antioxygenic property is preferable, but wear resistance, thermal shock resistance and bond strength are very poor；And it is provided by the invention anti-oxidant resistance to
The antioxygenic property for grinding composite coating is suitable with pure ceramic coating, but wear resistance, thermal shock resistance and bond strength are obviously excellent
In pure ceramic coating.
Embodiment in the present invention is only used for that the present invention will be described, and is not construed as limiting the scope of claims limitation,
Other substantially equivalent substitutions that those skilled in that art are contemplated that, all fall in the scope of protection of the present invention.
Claims (6)
1. a kind of antioxidant wear-resistant composite coating, which is characterized in that at least three-layer coating including being coated in matrix surface, first
Coating be by according to weight percent content 40%~60% Ni, 20%~30% Co, 10%~20% Cr, 3%~
12% Al, 0.5%~5% Y composition alloy-layer, second coating be by according to weight percent content 10%~40%
Al2O3, 60%~90% NiCo23Cr17Al12Y0.5The cermet coating of composition, third coating are by containing according to weight percent
The Al of amount 50%~85%2O3, 15%~50% NiCo23Cr17Al12Y0.5The cermet coating of composition.
2. antioxidant wear-resistant composite coating according to claim 1, which is characterized in that the first coating is by according to weight
Measure the Ni of degree 45%~55%, 20%~28% Co, 15%~20% Cr, 3%~10% Al, 2%~
The alloy-layer of 5% Y composition, the second coating are by the Al according to weight percent content 25%~40%2O3, 60%~
75% NiCo23Cr17Al12Y0.5The cermet coating of composition, third coating be by according to weight percent content 70%~
85% Al2O3, 15%~30% NiCo23Cr17Al12Y0.5The cermet coating of composition.
3. antioxidant wear-resistant composite coating according to claim 1, which is characterized in that the first coating is coated in described
Matrix surface forms 1~20 μm of thickness.
4. antioxidant wear-resistant composite coating according to claim 1, which is characterized in that the second coating is coated in described
In first coating, 10~30 μm of thickness is formed.
5. antioxidant wear-resistant composite coating according to claim 1, which is characterized in that the third coating is coated in described
In second coating, 10~30 μm of thickness is formed.
6. antioxidant wear-resistant composite coating according to claim 1, which is characterized in that described matrix is annealing furnace roller.
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| CN201910620378.4A CN110257813A (en) | 2019-07-10 | 2019-07-10 | Antioxidant wear-resistant composite coating |
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| Application Number | Priority Date | Filing Date | Title |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114370471A (en) * | 2022-01-05 | 2022-04-19 | 东风柳州汽车有限公司 | Brake pad wear reminding method, device, equipment and storage medium |
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| CN114370471A (en) * | 2022-01-05 | 2022-04-19 | 东风柳州汽车有限公司 | Brake pad wear reminding method, device, equipment and storage medium |
| CN114370471B (en) * | 2022-01-05 | 2023-09-01 | 东风柳州汽车有限公司 | Brake pad wear reminding method, device, equipment and storage medium |
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