CN105441921B - A kind of metalwork anti-corrosive technology - Google Patents
A kind of metalwork anti-corrosive technology Download PDFInfo
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- CN105441921B CN105441921B CN201510842113.0A CN201510842113A CN105441921B CN 105441921 B CN105441921 B CN 105441921B CN 201510842113 A CN201510842113 A CN 201510842113A CN 105441921 B CN105441921 B CN 105441921B
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- metalwork
- degreasing
- acid
- time
- etch
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- 238000005516 engineering process Methods 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 25
- 238000007127 saponification reaction Methods 0.000 claims abstract description 23
- 238000002161 passivation Methods 0.000 claims abstract description 22
- 238000004140 cleaning Methods 0.000 claims abstract description 8
- 239000013527 degreasing agent Substances 0.000 claims abstract description 8
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 35
- 238000005238 degreasing Methods 0.000 claims description 30
- 239000000243 solution Substances 0.000 claims description 30
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 26
- 239000002253 acid Substances 0.000 claims description 20
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 claims description 20
- ONDPHDOFVYQSGI-UHFFFAOYSA-N zinc nitrate Chemical compound [Zn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ONDPHDOFVYQSGI-UHFFFAOYSA-N 0.000 claims description 20
- 238000007789 sealing Methods 0.000 claims description 19
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 18
- 239000012895 dilution Substances 0.000 claims description 15
- 238000010790 dilution Methods 0.000 claims description 15
- 239000012153 distilled water Substances 0.000 claims description 15
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 14
- 229910017604 nitric acid Inorganic materials 0.000 claims description 14
- 239000011787 zinc oxide Substances 0.000 claims description 13
- 229940116318 copper carbonate Drugs 0.000 claims description 11
- GEZOTWYUIKXWOA-UHFFFAOYSA-L copper;carbonate Chemical compound [Cu+2].[O-]C([O-])=O GEZOTWYUIKXWOA-UHFFFAOYSA-L 0.000 claims description 11
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 10
- 238000007598 dipping method Methods 0.000 claims description 10
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 10
- 239000011775 sodium fluoride Substances 0.000 claims description 10
- 235000013024 sodium fluoride Nutrition 0.000 claims description 10
- 239000008399 tap water Substances 0.000 claims description 10
- 235000020679 tap water Nutrition 0.000 claims description 10
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 9
- 235000010299 hexamethylene tetramine Nutrition 0.000 claims description 9
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 claims description 9
- 229960004011 methenamine Drugs 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 7
- 239000007864 aqueous solution Substances 0.000 claims description 5
- 239000003153 chemical reaction reagent Substances 0.000 claims description 5
- 239000008367 deionised water Substances 0.000 claims description 5
- 229910021641 deionized water Inorganic materials 0.000 claims description 5
- 239000011521 glass Substances 0.000 claims description 5
- 238000007654 immersion Methods 0.000 claims description 5
- 238000005554 pickling Methods 0.000 claims description 5
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 claims description 5
- 230000003449 preventive effect Effects 0.000 claims description 5
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 5
- 239000000047 product Substances 0.000 claims 1
- 238000005260 corrosion Methods 0.000 abstract description 7
- 230000007797 corrosion Effects 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 7
- 229910000831 Steel Inorganic materials 0.000 abstract description 5
- 239000010959 steel Substances 0.000 abstract description 5
- 239000000203 mixture Substances 0.000 abstract description 3
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 230000003405 preventing effect Effects 0.000 abstract description 2
- 229910017665 NH4HF2 Inorganic materials 0.000 description 4
- OVFCVRIJCCDFNQ-UHFFFAOYSA-N carbonic acid;copper Chemical compound [Cu].OC(O)=O OVFCVRIJCCDFNQ-UHFFFAOYSA-N 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 241000416536 Euproctis pseudoconspersa Species 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 102000004160 Phosphoric Monoester Hydrolases Human genes 0.000 description 1
- 108090000608 Phosphoric Monoester Hydrolases Proteins 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 210000003739 neck Anatomy 0.000 description 1
Abstract
A kind of metalwork anti-corrosive technology of disclosure of the invention, the cleaning is divided into two steps, on the one hand degreaser can be washed away, on the other hand the influence of other ion pairs film forming of steel surface can be excluded, it is ideal that the composition and ratio and configuration method of the phosphating solution can make metalwork phosphatization be formed by phosphating coat rust-proof effect, application prospect is extensive, saponification process is carried out after the middle passivation, it can achieve longer-term antirust and etch-proof effect, using such anti-corrosive technology, have the advantages that favorable rust preventing effect, good corrosion resistance, market potential is huge, has a extensive future.
Description
Technical field
The invention belongs to antirust treatment fields, it is more particularly related to a kind of metalwork anti-corrosive technology.
Background technique
Antirust phosphating is the phosphorization treatment process for the purpose of antirust, belongs to phosphorization of thick film, and film thickness is 10- 20um, film
Weight is 10-30 g/m2;Steel and iron parts (oxidation) film thickness that turns blue is only 0.5-1.5um, therefore the rustless property of antirust phosphating film is far super
Cross steel and iron parts oxidation film.Metalwork anti-corrosive technology has what antirust time was not grown at present.
Summary of the invention
The problem to be solved by the invention is to provide a kind of metalwork anti-corrosive technologies.
To achieve the goals above, the technical scheme adopted by the invention is as follows:
A kind of metalwork anti-corrosive technology, includes the following steps:
(1) degreasing
It is put into after metalwork is polished in PA30-2M degreaser and carries out dipping degreasing, the temperature of the degreasing is 50-
60 DEG C, the time of the dipping degreasing is 5-7min；
(2) it washes
Then the clean metalwork of degreasing is cleaned with water；
(3) pickling
Water washed metalwork is put into etch acid, 3-6min is impregnated at 30-60 DEG C, the group of the etch acid becomes
The NH4HF2 aqueous solution of the HNO3 and 6-8 g/L of 300-400mL/L, the total acidity of the etch acid are 55-75 point；
(4) it washes again
The metalwork that acid etch is crossed, which is put into tap water, impregnates 20-30min, then takes out and is washed 2-4 times with flowing water；
(5) phosphatization
Then metalwork is dipped into prepared phosphating solution and carries out phosphorating treatment, form phosphatization on metalwork surface
Film, the time of the immersion are 6-8h；
(6) it post-processes
Passivation by the metalwork after phosphatization in group as the potassium bichromate of 80 g/ L of 50-, the sodium carbonate of 2-4 g/ L
Processing is passivated in liquid, the time of the Passivation Treatment is 10-15min, and the temperature of the passivation is 70-90 DEG C；
(7) oil sealing
Then metalwork is immersed in dewatering rust preventive oil and carries out oil sealing, the time of the oil sealing is 5-7min, the oil
The temperature of envelope is 90-110 DEG C.
Preferably, cleaning is divided into two steps in the step (2), and the first step is: the metalwork tap water after degreasing is cleaned
2-4min, second step are: being then washed with deionized water 2-4 times again.
Preferably, the group of phosphating solution becomes zinc oxide 20-21%, copper carbonate 2-3%, nitric acid 19- in the step (5)
21%, phosphoric acid 7-9%, methenamine 3.5-3.7%, sodium fluoride 5.3-5.5%, zinc nitrate 35-45%.
Preferably, the configuration process of the phosphating solution are as follows: (1) weighted zinc oxide and copper carbonate are first put into vierics
In ware, while distilled water dilution is added；(2) methenamine, sodium fluoride, zinc nitrate are put into another glassware, are added and steam
Distilled water dilution；(3) nitric acid is poured into zinc oxide and carbonic acid copper solution, while is stirred with glass bar, be subsequently added into phosphoric acid, stirred
Time be 10-20min, be eventually adding distilled water dilution；(4) by the liquid that two kinds prepare be mixed and stirred for after phosphatization
Liquid.
Preferably, saponification process is carried out after passivation in the step (6).
Preferably, the reagent of the saponification process is odium stearate, and the amount of the odium stearate is 50 g/ L of 30-, institute
The temperature for stating saponification is 80-90 DEG C, and the time of the saponification is 10-20min.
The utility model has the advantages that the cleaning is divided into two steps the present invention provides a kind of metalwork anti-corrosive technology, on the one hand can wash
Degreaser is removed, the influence of other ion pairs film forming of steel surface, the composition and ratio of the phosphating solution on the other hand can be excluded
And configuration method metalwork phosphatization can be made to be formed by phosphating coat rust-proof effect is ideal, and application prospect is extensive, it is described
Saponification process is carried out after middle passivation, can achieve longer-term antirust and etch-proof effect, using such anti-corrosive technology, is had anti-
It becomes rusty the advantages of effect is good, good corrosion resistance, market potential is huge, has a extensive future.
Specific embodiment
Embodiment 1:
A kind of metalwork anti-corrosive technology, includes the following steps:
(1) degreasing
It is put into after metalwork is polished in PA30-2M degreaser and carries out dipping degreasing, the temperature of the degreasing is 50
DEG C, the time of the dipping degreasing is 5min；
(2) it washes
Then the clean metalwork of degreasing is cleaned with water, cleaning is divided into two steps, and the first step is by the gold after degreasing
Belong to part tap water and clean 2min, second step is then to be washed with deionized water again 2 times；
(3) pickling
Water washed metalwork is put into etch acid, 3min is impregnated at 30 DEG C, the group of the etch acid becomes
The NH4HF2 aqueous solution of the HNO3 of 300mL/L and 6 g/L, the total acidity of the etch acid are 55 points；
(4) it washes again
The metalwork that acid etch is crossed, which is put into tap water, impregnates 20min, then takes out and is washed 2 times with flowing water；
(5) phosphatization
Then metalwork is dipped into prepared phosphating solution and carries out phosphorating treatment, form phosphatization on metalwork surface
Film, time of the immersion are 6h, the group of the phosphating solution become zinc oxide 20%, copper carbonate 2%, nitric acid 19%, phosphoric acid 7%,
Methenamine 3.5%, sodium fluoride 5.3%, zinc nitrate 35%, the preparation steps of the phosphating solution are as follows: 1. first by weighted oxidation
Zinc and copper carbonate are put into glassware, while distilled water dilution is added；2. methenamine, sodium fluoride, zinc nitrate are put into separately
In one glassware, distilled water dilution is added；3. nitric acid is poured into zinc oxide and carbonic acid copper solution, while being stirred with glass bar
It mixes, is subsequently added into phosphoric acid, the time of stirring is 10min, is eventually adding distilled water dilution；4. two kinds of liquid prepared are mixed simultaneously
After stirring phosphating solution；
(6) it post-processes
By the metalwork after phosphatization group as the potassium bichromate of 50 g/ L, the sodium carbonate of 2 g/ L passivating solution in into
Row Passivation Treatment, the time of the Passivation Treatment are 10min, and the temperature of the passivation is 70 DEG C；
(7) it is saponified
By carrying out saponification process after passivation again, the reagent of the saponification process is odium stearate, the odium stearate
Amount is 30 g/ L, and the temperature of the saponification is 80 DEG C, and the time of the saponification is 10min；
(8) oil sealing
Then metalwork is immersed in dewatering rust preventive oil and carries out oil sealing, the time of the oil sealing is 5min, the oil sealing
Temperature be 90 DEG C.
Embodiment 2:
A kind of metalwork anti-corrosive technology, includes the following steps:
(1) degreasing
It is put into after metalwork is polished in PA30-2M degreaser and carries out dipping degreasing, the temperature of the degreasing is 55
DEG C, the time of the dipping degreasing is 6min；
(2) it washes
Then the clean metalwork of degreasing is cleaned with water, cleaning is divided into two steps, and the first step is by the gold after degreasing
Belong to part tap water and clean 3min, second step is then to be washed with deionized water again 3 times；
(3) pickling
Water washed metalwork is put into etch acid, 4.5min is impregnated at 45 DEG C, the group of the etch acid becomes
The NH4HF2 aqueous solution of the HNO3 of 350mL/L and 7 g/L, the total acidity of the etch acid are 65 points；
(4) it washes again
The metalwork that acid etch is crossed, which is put into tap water, impregnates 25min, then takes out and is washed 3 times with flowing water；
(5) phosphatization
Then metalwork is dipped into prepared phosphating solution and carries out phosphorating treatment, form phosphatization on metalwork surface
Film, the time of the immersion are 7h, and the group of the phosphating solution becomes zinc oxide 20.5%, copper carbonate 2.5%, nitric acid 20%, phosphoric acid
8%, methenamine 3.6%, sodium fluoride 5.4%, zinc nitrate 40%, the preparation steps of the phosphating solution are as follows: 1. first will be weighted
Zinc oxide and copper carbonate are put into glassware, while distilled water dilution is added；2. methenamine, sodium fluoride, zinc nitrate are put
Enter in another glassware, distilled water dilution is added；3. nitric acid is poured into zinc oxide and carbonic acid copper solution, while using glass bar
Stirring is subsequently added into phosphoric acid, and the time of stirring is 15min, is eventually adding distilled water dilution；4. two kinds of liquid prepared are mixed
And stir after phosphating solution；
(6) it post-processes
Metalwork after phosphatization is carried out in the passivating solution that group becomes the potassium bichromate of 65g/ L, the sodium carbonate of 3 g/ L
Passivation Treatment, the time of the Passivation Treatment are 12.5min, and the temperature of the passivation is 80 DEG C；
(7) it is saponified
By carrying out saponification process after passivation again, the reagent of the saponification process is odium stearate, the odium stearate
Amount is 40 g/ L, and the temperature of the saponification is 85 DEG C, and the time of the saponification is 15min；
(8) oil sealing
Then metalwork is immersed in dewatering rust preventive oil and carries out oil sealing, the time of the oil sealing is 6min, the oil sealing
Temperature be 100 DEG C.
Embodiment 3:
A kind of metalwork anti-corrosive technology, includes the following steps:
(1) degreasing
It is put into after metalwork is polished in PA30-2M degreaser and carries out dipping degreasing, the temperature of the degreasing is 60
DEG C, the time of the dipping degreasing is 7min；
(2) it washes
Then the clean metalwork of degreasing is cleaned with water, cleaning is divided into two steps, and the first step is by the gold after degreasing
Belong to part tap water and clean 4min, second step is then to be washed with deionized water again 4 times；
(3) pickling
Water washed metalwork is put into etch acid, 6min is impregnated at 60 DEG C, the group of the etch acid becomes
The NH4HF2 aqueous solution of the HNO3 of 400mL/L and 8 g/L, the total acidity of the etch acid are 75 points；
(4) it washes again
The metalwork that acid etch is crossed, which is put into tap water, impregnates 30min, then takes out and is washed 4 times with flowing water；
(5) phosphatization
Then metalwork is dipped into prepared phosphating solution and carries out phosphorating treatment, form phosphatization on metalwork surface
Film, time of the immersion are 8h, the group of the phosphating solution become zinc oxide 21%, copper carbonate 3%, nitric acid 21%, phosphatase 79 %,
Methenamine 3.7%, sodium fluoride 5.5%, zinc nitrate 45%, the preparation steps of the phosphating solution are as follows: 1. first by weighted oxidation
Zinc and copper carbonate are put into glassware, while distilled water dilution is added；2. methenamine, sodium fluoride, zinc nitrate are put into separately
In one glassware, distilled water dilution is added；3. nitric acid is poured into zinc oxide and carbonic acid copper solution, while being stirred with glass bar
It mixes, is subsequently added into phosphoric acid, the time of stirring is 20min, is eventually adding distilled water dilution；4. two kinds of liquid prepared are mixed simultaneously
After stirring phosphating solution；
(6) it post-processes
By the metalwork after phosphatization group as the potassium bichromate of 80 g/ L, the sodium carbonate of 4 g/ L passivating solution in into
Row Passivation Treatment, the time of the Passivation Treatment are 15min, and the temperature of the passivation is 90 DEG C；
(7) it is saponified
By carrying out saponification process after passivation again, the reagent of the saponification process is odium stearate, the odium stearate
Amount is 50 g/ L, and the temperature of the saponification is 90 DEG C, and the time of the saponification is 20min；
(8) oil sealing
Then metalwork is immersed in dewatering rust preventive oil and carries out oil sealing, the time of the oil sealing is 7min, the oil sealing
Temperature be 110 DEG C.
After process above, sample is taken out respectively, and measurement result is as follows:
| Detection project | Embodiment 1 | Embodiment 2 | Embodiment 3 | Prior art index |
| Corrosion inhibition rate (%) | 95.2 | 96.7 | 96.9 | 94.8 |
| Polarization resistance (Ω) | 2014.6 | 2022.9 | 1999.8 | 1600.7 |
| Corrosion electric current density (mA/cm2) | 0.0119 | 0.0084 | 0.0126 | 0.0421 |
According to above table data, it can be concluded that, the metal when 2 parameter of embodiment after antirust treatment is more anti-than the prior art
The corrosion inhibition rate and polarization resistance of rust treated metalwork be high, and corrosion electric current density after prior art antirust treatment than coming out
It is low, it is more advantageous to the antirust treatment of metalwork at this time.
The present invention provides a kind of metalwork anti-corrosive technology, the cleaning is divided into two steps, on the one hand can wash away degreaser,
On the other hand the influence of other ion pairs film forming of steel surface, the composition and ratio of the phosphating solution and configuration side can be excluded
Method metalwork phosphatization can be made to be formed by phosphating coat rust-proof effect is ideal, and application prospect is extensive, it is described it is middle passivation it is laggard
Row saponification process can achieve longer-term antirust and etch-proof effect, using such anti-corrosive technology, have favorable rust preventing effect,
The advantages of good corrosion resistance, market potential is huge, has a extensive future.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright description is applied directly or indirectly in other relevant technology necks
Domain is included within the scope of the present invention.
Claims (3)
1. a kind of metalwork anti-corrosive technology, which comprises the steps of:
(1) degreasing
It is put into after metalwork is polished in PA30-2M degreaser and carries out dipping degreasing, the temperature of the degreasing is 50-60 DEG C,
The time of the dipping degreasing is 5-7min；
(2) it washes
Then the clean metalwork of degreasing is cleaned with water；
(3) pickling
Water washed metalwork is put into etch acid, 3-6min is impregnated at 30-60 DEG C, the group of the etch acid becomes 300-
The HNO of 400mL/L3With the NH of 6-8g/L4HF2Aqueous solution, the total acidity of the etch acid are 55-75 point；
(4) it washes again
The metalwork that acid etch is crossed, which is put into tap water, impregnates 20-30min, then takes out and is washed 2-4 times with flowing water；
(5) phosphatization
Then metalwork is dipped into prepared phosphating solution and carries out phosphorating treatment, form phosphating coat, institute on metalwork surface
The time for stating immersion is 6-8h；The group of phosphating solution becomes zinc oxide 20-21%, copper carbonate 2-3%, nitric acid 19- in the step (5)
21%, phosphoric acid 7-9%, methenamine 3.5-3.7%, sodium fluoride 5.3-5.5%, zinc nitrate 35-45%；
(6) it post-processes
Metalwork after phosphatization is carried out in the passivating solution that group becomes the potassium bichromate of 50-80g/L, the sodium carbonate of 2-4g/L blunt
Change processing, the time of the Passivation Treatment are 10-15min, and the temperature of the passivation is 70-90 DEG C, are carried out at saponification after passivation
Reason, the reagent of the saponification process are odium stearate, and the amount of the odium stearate is 30-50g/L, and the temperature of the saponification is
80-90 DEG C, the time of the saponification is 10-20min；
(7) oil sealing
Then metalwork is immersed in dewatering rust preventive oil and carries out oil sealing, the time of the oil sealing is 5-7min, the oil sealing
Temperature is 90-110 DEG C.
2. a kind of metalwork anti-corrosive technology described in accordance with the claim 1, it is characterised in that: cleaning is divided into the step (2)
Two steps, the first step are: the metalwork tap water after degreasing being cleaned 2-4min, second step is: 2-4 being then washed with deionized water again
It is secondary.
3. a kind of metalwork anti-corrosive technology according to claim 2, it is characterised in that: the configuration process of the phosphating solution
Are as follows: (1) first weighted zinc oxide and copper carbonate are put into glassware, while distilled water dilution is added；(2) by Wu Luotuo
Product, sodium fluoride, zinc nitrate are put into another glassware, and distilled water dilution is added；(3) nitric acid is poured into zinc oxide and copper carbonate
It in solution, while being stirred with glass bar, is subsequently added into phosphoric acid, the time of stirring is 10-20min, is eventually adding distilled water dilution；
(4) by the liquid that two kinds prepare be mixed and stirred for after phosphating solution.
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| CN201510842113.0A CN105441921B8 (en) | 2015-11-29 | 2015-11-29 | Metal part rust prevention process |
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| CN201510842113.0A CN105441921B8 (en) | 2015-11-29 | 2015-11-29 | Metal part rust prevention process |
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| CN106011814A (en) * | 2016-06-17 | 2016-10-12 | 霍山县龙鑫金属制品有限公司 | Surface phosphating treatment technique for steel |
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| CN108588694A (en) * | 2018-05-29 | 2018-09-28 | 滁州南钢盛达实业有限公司 | A kind of phosphorization treatment process of steel |
| CN109296626B (en) * | 2018-10-19 | 2021-04-20 | 云南西仪工业股份有限公司 | Anti-rust method for connecting rod bushing |
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| CN103898494A (en) * | 2014-03-27 | 2014-07-02 | 常州联力自动化科技有限公司 | Flameproof surface phosphating process and used phosphating solution |
| CN103938201A (en) * | 2014-04-30 | 2014-07-23 | 安徽启明表面技术有限公司 | Black phosphorizing method with high corrosion resistance |
| CN104250842A (en) * | 2013-06-28 | 2014-12-31 | 无锡杨市表面处理科技有限公司 | Technology for pretreating aluminum alloy surface before plating |
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2015
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| CN101130863A (en) * | 2006-08-23 | 2008-02-27 | 冯为民 | Method for preparing nigrescent phosphatizing solution |
| CN101591798A (en) * | 2008-06-01 | 2009-12-02 | 比亚迪股份有限公司 | A kind of metalwork and surface treatment method thereof |
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| CN104250842A (en) * | 2013-06-28 | 2014-12-31 | 无锡杨市表面处理科技有限公司 | Technology for pretreating aluminum alloy surface before plating |
| CN103469189A (en) * | 2013-08-23 | 2013-12-25 | 吴江龙硕金属制品有限公司 | Metal phosphatization liquid and preparation method thereof |
| CN103468350A (en) * | 2013-09-24 | 2013-12-25 | 上海三汰包装材料有限公司 | Phosphated metal rust-proof oil and preparation method thereof |
| CN103898494A (en) * | 2014-03-27 | 2014-07-02 | 常州联力自动化科技有限公司 | Flameproof surface phosphating process and used phosphating solution |
| CN103938201A (en) * | 2014-04-30 | 2014-07-23 | 安徽启明表面技术有限公司 | Black phosphorizing method with high corrosion resistance |
Also Published As
| Publication number | Publication date |
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| CN105441921A (en) | 2016-03-30 |
| CN105441921B8 (en) | 2019-12-06 |
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Effective date of registration: 20190826 Address after: 318020 Xinlaiqiao Village, Jiangkou Street, Huangyan District, Taizhou City, Zhejiang Province Applicant after: Taizhou Hexing Forging Co.,Ltd. Address before: 516000 Huizhou City, Huicheng Province, the main floor of the road up to the number of cubic meters on the floor of the building, No. 12, Applicant before: Zheng Chenchuan |
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Correction item: Patentee|Address Correct: Taizhou Hexing Forging Co.,Ltd.|318020 new bridge village, Jiangkou street, Huangyan District, Zhejiang, Taizhou False: Zheng Chenchuan|516000 Huizhou City, Huicheng Province, the main floor of the road up to the number of cubic meters on the floor of the building, No. 12, Number: 37-01 Page: The title page Volume: 35 Correction item: Patentee|Address Correct: Taizhou Hexing Forging Co.,Ltd.|318020 new bridge village, Jiangkou street, Huangyan District, Zhejiang, Taizhou False: Zheng Chenchuan|516000 Huizhou City, Huicheng Province, the main floor of the road up to the number of cubic meters on the floor of the building, No. 12, Number: 37-01 Volume: 35 |
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Denomination of invention: Antirust process for metal parts Effective date of registration: 20211222 Granted publication date: 20190910 Pledgee: Bank of Ningbo Co.,Ltd. Taizhou Branch Pledgor: Taizhou Hexing Forging Co.,Ltd. Registration number: Y2021330002608 |
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