CN110079795B - Galvanized part surface treating agent and preparation method thereof - Google Patents
Galvanized part surface treating agent and preparation method thereof Download PDFInfo
- Publication number
- CN110079795B CN110079795B CN201910537440.3A CN201910537440A CN110079795B CN 110079795 B CN110079795 B CN 110079795B CN 201910537440 A CN201910537440 A CN 201910537440A CN 110079795 B CN110079795 B CN 110079795B
- Authority
- CN
- China
- Prior art keywords
- galvanized
- hydroxymethyl
- ethylenediamine
- sulfuric acid
- galvanized part
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000002360 preparation method Methods 0.000 title description 11
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 34
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 claims abstract description 34
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 26
- 239000002994 raw material Substances 0.000 claims abstract description 24
- MIMUSZHMZBJBPO-UHFFFAOYSA-N 6-methoxy-8-nitroquinoline Chemical compound N1=CC=CC2=CC(OC)=CC([N+]([O-])=O)=C21 MIMUSZHMZBJBPO-UHFFFAOYSA-N 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- IMQLKJBTEOYOSI-GPIVLXJGSA-N Inositol-hexakisphosphate Chemical compound OP(O)(=O)O[C@H]1[C@H](OP(O)(O)=O)[C@@H](OP(O)(O)=O)[C@H](OP(O)(O)=O)[C@H](OP(O)(O)=O)[C@@H]1OP(O)(O)=O IMQLKJBTEOYOSI-GPIVLXJGSA-N 0.000 claims abstract description 17
- IMQLKJBTEOYOSI-UHFFFAOYSA-N Phytic acid Natural products OP(O)(=O)OC1C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C1OP(O)(O)=O IMQLKJBTEOYOSI-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000004115 Sodium Silicate Substances 0.000 claims abstract description 17
- ICAKDTKJOYSXGC-UHFFFAOYSA-K lanthanum(iii) chloride Chemical compound Cl[La](Cl)Cl ICAKDTKJOYSXGC-UHFFFAOYSA-K 0.000 claims abstract description 17
- 229940068041 phytic acid Drugs 0.000 claims abstract description 17
- 235000002949 phytic acid Nutrition 0.000 claims abstract description 17
- 239000000467 phytic acid Substances 0.000 claims abstract description 17
- 235000010344 sodium nitrate Nutrition 0.000 claims abstract description 17
- 239000004317 sodium nitrate Substances 0.000 claims abstract description 17
- 229910052911 sodium silicate Inorganic materials 0.000 claims abstract description 17
- 229910000349 titanium oxysulfate Inorganic materials 0.000 claims abstract description 17
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 14
- IGOINYVDUSKYDZ-UHFFFAOYSA-N [2-[bis(hydroxymethyl)amino]ethyl-(hydroxymethyl)amino]methanol Chemical compound OCN(CO)CCN(CO)CO IGOINYVDUSKYDZ-UHFFFAOYSA-N 0.000 claims abstract description 13
- DIGDEPKXCWMYBK-UHFFFAOYSA-N (2-aminoethylamino)methanol Chemical compound NCCNCO DIGDEPKXCWMYBK-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000012756 surface treatment agent Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 3
- 235000019794 sodium silicate Nutrition 0.000 claims description 3
- 238000002161 passivation Methods 0.000 abstract description 25
- 230000007797 corrosion Effects 0.000 abstract description 13
- 238000005260 corrosion Methods 0.000 abstract description 13
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 17
- 150000003839 salts Chemical class 0.000 description 9
- 239000007921 spray Substances 0.000 description 9
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- 239000010410 layer Substances 0.000 description 7
- 239000011701 zinc Substances 0.000 description 7
- 229910052725 zinc Inorganic materials 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 6
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000007747 plating Methods 0.000 description 3
- 235000013024 sodium fluoride Nutrition 0.000 description 3
- 239000011775 sodium fluoride Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 229910001335 Galvanized steel Inorganic materials 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000008397 galvanized steel Substances 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 241001163841 Albugo ipomoeae-panduratae Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 1
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 1
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
-
- 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
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/34—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
The invention discloses a galvanized part surface treating agent, which is prepared from the following raw materials: 15-20 g/L of titanyl sulfate, 20-30 g/L of sodium silicate, 1-5 g/L of phytic acid, 30-35 g/L of sodium nitrate, 5-10 g/L of ammonium bifluoride, 3-5 mL/L of sulfuric acid, 5-10 g/L of lanthanum chloride, 10-15 mL/L, N of hydrogen peroxide, 1-3 g/L of N, N ', N' -tetra (hydroxymethyl) ethylenediamine and the balance of water. The invention improves the formula of the existing chromium-free color passivation solution, adds N, N, N ', N' -tetra (hydroxymethyl) ethylenediamine with specific dosage, and replaces the fluoride with ammonium bifluoride, so that the appearance of the passivated galvanized part keeps the natural color of the galvanized layer, the corrosion resistance of the galvanized part is improved, the market acceptance of the passivated galvanized part is greatly improved, and the chromium-free color passivation solution has considerable economic benefit and wide application prospect.
Description
Technical Field
The invention belongs to the field of metal surface treatment, and particularly relates to a galvanized part surface treating agent and a preparation method thereof.
Background
The passivation treatment is a surface treatment method for forming a firm, compact and high-stability film on the plating layer by performing chemical or electrochemical treatment in a certain solution, and the passivation further improves the corrosion resistance of the plating layer and increases the surface gloss and the pollution resistance. For example, the surface of a workpiece treated by chemical plating, electroplating, acid washing, water washing and the like is very active, so that passivation treatment is immediately carried out, and a layer of protective film is formed on the treated metal surface to slow down corrosion. The workpiece is passivated comprehensively, so that the corrosion resistance of the workpiece can be improved, and the service life of the workpiece can be prolonged.
The passivation formula and the passivation process mainly comprise chromium passivation and chromium-free passivation. The more mature and early used of these studies is chromate passivation, but as hexavalent chromium is highly toxic and carcinogenic, with the growing awareness of environmental protection, it is increasingly desirable to find new formulations and new processes that can replace chromic acid passivation. At present, some technical solutions of chromium-free passivation treating agents for galvanized parts have been disclosed in the prior art, for example, chinese patent application with publication number CN105779983A discloses a chromium-free color passivation solution, which comprises the following components in percentage by weight: 15-20 g/L of titanyl sulfate, 20-30 g/L of sodium silicate, 1-5 g/L of phytic acid, 30-35 g/L of sodium nitrate, 5-10 g/L of fluoride, 3-5 mL/L of sulfuric acid, 5-10 g/L of lanthanum chloride, 10-15 mL/L of hydrogen peroxide, and the balance of water H2O, wherein the pH value of the passivation solution is 1-3; the passivation solution does not contain harmful substances of heavy metals such as chromium and the like, is harmless to the environment and human body, has good stability, and is a brand-new environment-friendly passivation solution with high corrosion resistance of a passivation film formed on the surface of a zinc coating. However, the galvanized part treated by the chromium-free color passivation solution is colored in appearance, and the surface of the galvanized part is required to keep the natural color of a galvanized layer in many application occasions. Therefore, the appearance color reduces the market application prospect of the chromium-free color passivation solution product. Therefore, it is an urgent need to develop a chromium-free passivation treating agent which does not change the appearance of the zinc coating layer and can further improve the corrosion resistance.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a chromium-free passivation surface treating agent which does not change the appearance of a zinc coating, mainly solves the technical problem that a zinc-plated piece subjected to passivation treatment in the prior art is colored in appearance, and further improves the corrosion resistance of the zinc-plated piece.
In order to realize the purpose, the invention adopts the following technical scheme:
a galvanized part surface treating agent is prepared from the following raw materials: 15-20 g/L of titanyl sulfate, 20-30 g/L of sodium silicate, 1-5 g/L of phytic acid, 30-35 g/L of sodium nitrate, 5-10 g/L of ammonium bifluoride, 3-5 mL/L of sulfuric acid, 5-10 g/L of lanthanum chloride, 10-15 mL/L, N of hydrogen peroxide, 1-3 g/L of N, N ', N' -tetra (hydroxymethyl) ethylenediamine and the balance of water.
The sulfuric acid is concentrated sulfuric acid with the mass fraction of 98%.
The preparation method of the galvanized part surface treating agent is simple and convenient, the raw materials are sequentially added into water according to the sequence of titanyl sulfate, sodium silicate, phytic acid, sodium nitrate, ammonium bifluoride, sulfuric acid, lanthanum chloride, hydrogen peroxide, N, N, N ', N' -tetra (hydroxymethyl) ethylenediamine, stirred and dissolved uniformly, and the following raw materials can be added after one raw material is completely dissolved each time.
Compared with the prior art, the invention has the beneficial effects that: the invention improves the formula of the existing chromium-free color passivation solution, adds N, N, N ', N' -tetra (hydroxymethyl) ethylenediamine with specific dosage, and replaces the fluoride with ammonium bifluoride, so that the appearance of the passivated galvanized part keeps the natural color of the galvanized layer, the corrosion resistance of the galvanized part is improved, the market acceptance of the passivated galvanized part is greatly improved, and the chromium-free color passivation solution has considerable economic benefit and wide application prospect.
Detailed Description
The invention is further described below by way of examples.
Example 1:
a galvanized part surface treating agent is prepared from the following raw materials: 15g/L of titanyl sulfate, 20g/L of sodium silicate, 3g/L of phytic acid, 30g/L of sodium nitrate, 5g/L of ammonium bifluoride, 3mL/L of concentrated sulfuric acid with the mass fraction of 98%, 5g/L of lanthanum chloride, 10mL/L, N of hydrogen peroxide, 2 g/L of N, N ', N' -tetra (hydroxymethyl) ethylenediamine and the balance of water.
The preparation method of the galvanized part surface treating agent comprises the following steps: the raw materials are sequentially added into water according to the sequence of titanyl sulfate, sodium silicate, phytic acid, sodium nitrate, ammonium bifluoride, sulfuric acid, lanthanum chloride, hydrogen peroxide and N, N, N ', N' -tetra (hydroxymethyl) ethylenediamine, stirred and dissolved uniformly, and the later raw materials can be added after one raw material is completely dissolved.
Example 2:
a galvanized part surface treating agent is prepared from the following raw materials: 20g/L of titanyl sulfate, 20g/L of sodium silicate, 5g/L of phytic acid, 30g/L of sodium nitrate, 10g/L of ammonium bifluoride, 3mL/L of concentrated sulfuric acid with the mass fraction of 98%, 10g/L of lanthanum chloride, 10mL/L, N of hydrogen peroxide, 3g/L of N, N ', N' -tetra (hydroxymethyl) ethylenediamine and the balance of water.
The preparation method of the galvanized part surface treating agent is the same as that of the example 1.
Example 3:
a galvanized part surface treating agent is prepared from the following raw materials: 15g/L of titanyl sulfate, 30g/L of sodium silicate, 1g/L of phytic acid, 35g/L of sodium nitrate, 5g/L of ammonium bifluoride, 5mL/L of concentrated sulfuric acid with the mass fraction of 98%, 5g/L of lanthanum chloride, 15mL/L, N of hydrogen peroxide, 1g/L of N, N ', N' -tetra (hydroxymethyl) ethylenediamine and the balance of water.
The preparation method of the galvanized part surface treating agent is the same as that of the example 1.
Comparative example 1:
a galvanized part surface treating agent is prepared from the following raw materials: 15g/L of titanyl sulfate, 20g/L of sodium silicate, 3g/L of phytic acid, 30g/L of sodium nitrate, 5g/L of ammonium bifluoride, 3mL/L of concentrated sulfuric acid with the mass fraction of 98%, 5g/L of lanthanum chloride, 10mL/L of hydrogen peroxide and the balance of water.
Comparative example 1 is different from example 1 in that N, N, N ', N' -tetrakis (hydroxymethyl) ethylenediamine was not added, and other raw material components and preparation method were the same as example 1.
Comparative example 2:
a galvanized part surface treating agent is prepared from the following raw materials: 15g/L of titanyl sulfate, 20g/L of sodium silicate, 3g/L of phytic acid, 30g/L of sodium nitrate, 5g/L of sodium fluoride, 3mL/L of concentrated sulfuric acid with the mass fraction of 98%, 5g/L of lanthanum chloride, 10mL/L, N of hydrogen peroxide, 2 g/L of N, N ', N' -tetra (hydroxymethyl) ethylenediamine and the balance of water.
Comparative example 2 differs from example 1 in that sodium fluoride is used instead of ammonium bifluoride, and the other raw material components and preparation method are the same as those of example 1.
Comparative example 3:
a galvanized part surface treating agent is prepared from the following raw materials: 15g/L of titanyl sulfate, 20g/L of sodium silicate, 3g/L of phytic acid, 30g/L of sodium nitrate, 5g/L of ammonium bifluoride, 3mL/L of concentrated sulfuric acid with the mass fraction of 98%, 5g/L of lanthanum chloride, 10mL/L, N of hydrogen peroxide, 0.2 g/L of N, N ', N' -tetra (hydroxymethyl) ethylenediamine and the balance of water.
Comparative example 3 is different from example 1 in that the amount of N, N, N ', N' -tetrakis (hydroxymethyl) ethylenediamine used was reduced to 0.2 g/L, and other raw material components and preparation method were the same as example 1.
Comparative example 4:
a galvanized part surface treating agent is prepared from the following raw materials: 15g/L of titanyl sulfate, 20g/L of sodium silicate, 3g/L of phytic acid, 30g/L of sodium nitrate, 5g/L of ammonium bifluoride, 3mL/L of concentrated sulfuric acid with the mass fraction of 98%, 5g/L of lanthanum chloride, 10mL/L, N of hydrogen peroxide, 5g/L of N, N ', N' -tetra (hydroxymethyl) ethylenediamine and the balance of water.
Comparative example 4 is different from example 1 in that the amount of N, N, N ', N' -tetrakis (hydroxymethyl) ethylenediamine used was increased to 5g/L, and other raw material components and preparation method were the same as example 1.
The galvanized part surface treatment agent prepared in the embodiments 1-3 and the comparative examples 1-4 is used for passivating the same batch of hot-dip galvanized steel plates, and specifically comprises the following steps: soaking at room temperature for 60s, washing with water, and drying.
After the salt spray corrosion test is carried out on the passivated hot-dip galvanized steel sheet for 120 hours according to GB/T10125-1997 salt spray test for artificial atmosphere corrosion test, the grade evaluation is carried out by referring to GB/T6461-2002 grade of samples and test pieces after corrosion tests of metals and other inorganic coatings on metal substrates, and the results are shown in Table 1:
TABLE 1 evaluation results of neutral salt spray corrosion protection level
| Appearance of the product | White rust area A/%) | Protection class | |
| Example 1 | Zinc coating natural color | Is free of | 10 |
| Example 2 | Zinc coating natural color | 0~0.1 | 9 |
| Example 3 | Zinc coating natural color | 0~0.1 | 9 |
| Comparative example 1 | Light blue purple | 5.0~10 | 3 |
| Comparative example 2 | Blue and white | 10~25 | 2 |
| Comparative example 3 | Light blue purple | 2.5~5.0 | 4 |
| Comparative example 4 | Zinc coating natural color | 10~25 | 2 |
As can be seen from table 1, the galvanized parts treated with the surface treatment agents of examples 1 to 3 of the present invention maintain the original color of the galvanized layer, and the treated galvanized parts have excellent salt spray corrosion resistance, wherein in example 1, after 120h of a salt spray test, the surface still does not start to rust, and example 1 is the best technical solution of the present invention. Comparative example 1 no N, N' -tetrakis (hydroxymethyl) ethylenediamine was added to the treatment agent, the surface of the treated galvanized article was bluish violet, and more than 5.0% of the surface area was rusted after 120 hours of salt spray test; comparative example 2 sodium fluoride is used in the treating agent to replace ammonium bifluoride, the surface of the galvanized part after treatment is blue-white, and more than 10% of the surface is rusted after 120 hours of salt spray test; comparative example 3 the amount of N, N' -tetrakis (hydroxymethyl) ethylenediamine in the treatment agent was reduced to 0.2 g/L, the treated galvanized surface was bluish-purple and over 2.5% area rust on the surface after 120h of salt spray test; comparative example 4 the amount of N, N' -tetrakis (hydroxymethyl) ethylenediamine used in the treatment agent was increased to 5g/L, and the surface of the galvanized article after the treatment maintained the natural color of the galvanized layer, but the surface was rusted over 10% of the area after 120 hours of the salt spray test. It can be seen that when the treating agent is not added with N, N, N ', N' -tetra (hydroxymethyl) ethylenediamine or the addition amount is too low, the effect of keeping the natural color of the galvanized part cannot be achieved, and when the addition amount of the N, N, N ', N' -tetra (hydroxymethyl) ethylenediamine is too high, the passivation effect is seriously affected.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. That is, all equivalent changes and modifications made according to the content of the claims of the present invention should be within the technical scope of the present invention.
Claims (6)
1. A galvanized part surface treating agent is characterized by being prepared from the following raw materials: 15-20 g/L of titanyl sulfate, 20-30 g/L of sodium silicate, 1-5 g/L of phytic acid, 30-35 g/L of sodium nitrate, 5-10 g/L of ammonium bifluoride, 3-5 mL/L of sulfuric acid, 5-10 g/L of lanthanum chloride, 10-15 mL/L, N of hydrogen peroxide, 1-3 g/L of N, N ', N' -tetra (hydroxymethyl) ethylenediamine and the balance of water.
2. The galvanized member surface treatment agent according to claim 1, which is prepared from the following raw materials: 15g/L of titanyl sulfate, 20g/L of sodium silicate, 3g/L of phytic acid, 30g/L of sodium nitrate, 5g/L of ammonium bifluoride, 3mL/L of sulfuric acid, 5g/L of lanthanum chloride, 10mL/L, N of hydrogen peroxide, 2 g/L of N, N ', N' -tetra (hydroxymethyl) ethylenediamine and the balance of water.
3. A galvanized part surface treating agent is characterized by being prepared from the following raw materials: 20g/L of titanyl sulfate, 20g/L of sodium silicate, 5g/L of phytic acid, 30g/L of sodium nitrate, 10g/L of ammonium bifluoride, 3mL/L of sulfuric acid, 10g/L of lanthanum chloride, 10mL/L, N of hydrogen peroxide, 3g/L of N, N ', N' -tetra (hydroxymethyl) ethylenediamine and the balance of water.
4. A galvanized part surface treating agent is characterized by being prepared from the following raw materials: 15g/L of titanyl sulfate, 30g/L of sodium silicate, 1g/L of phytic acid, 35g/L of sodium nitrate, 5g/L of ammonium bifluoride, 5mL/L of sulfuric acid, 5g/L of lanthanum chloride, 15mL/L, N of hydrogen peroxide, 1g/L of N, N ', N' -tetra (hydroxymethyl) ethylenediamine and the balance of water.
5. The surface treatment agent for galvanized parts according to any one of claims 1 to 4, wherein the sulfuric acid is concentrated sulfuric acid with a mass fraction of 98%.
6. The method for preparing the galvanized member surface treatment agent according to any one of claims 1 to 4, wherein the raw materials are sequentially added to water in the order of titanyl sulfate, sodium silicate, phytic acid, sodium nitrate, ammonium bifluoride, sulfuric acid, lanthanum chloride, hydrogen peroxide, and N, N, N ', N' -tetrakis (hydroxymethyl) ethylenediamine, and are uniformly stirred and dissolved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910537440.3A CN110079795B (en) | 2019-06-20 | 2019-06-20 | Galvanized part surface treating agent and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910537440.3A CN110079795B (en) | 2019-06-20 | 2019-06-20 | Galvanized part surface treating agent and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110079795A CN110079795A (en) | 2019-08-02 |
| CN110079795B true CN110079795B (en) | 2021-01-15 |
Family
ID=67424450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910537440.3A Active CN110079795B (en) | 2019-06-20 | 2019-06-20 | Galvanized part surface treating agent and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110079795B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110983317A (en) * | 2019-12-17 | 2020-04-10 | 昆明理工大学 | A kind of electro-galvanized silicate molybdate composite color passivation solution and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1858302A (en) * | 2006-06-09 | 2006-11-08 | 广东多正化工科技有限公司 | High anti-corrosion zinc coating trivalent chromium lue-white passivating agent and its preparing method |
| CN104087884A (en) * | 2014-07-15 | 2014-10-08 | 无锡伊佩克科技有限公司 | Metal galvanization and passivation method and use of chelating agent |
| CN105779983A (en) * | 2016-04-19 | 2016-07-20 | 昆明理工大学 | Chromium-free iridescent passivation liquid |
| CN109609944A (en) * | 2018-12-30 | 2019-04-12 | 王冬生 | A kind of aluminium alloy true qualities chromium-free passivating treatment agent and preparation method thereof |
-
2019
- 2019-06-20 CN CN201910537440.3A patent/CN110079795B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1858302A (en) * | 2006-06-09 | 2006-11-08 | 广东多正化工科技有限公司 | High anti-corrosion zinc coating trivalent chromium lue-white passivating agent and its preparing method |
| CN104087884A (en) * | 2014-07-15 | 2014-10-08 | 无锡伊佩克科技有限公司 | Metal galvanization and passivation method and use of chelating agent |
| CN105779983A (en) * | 2016-04-19 | 2016-07-20 | 昆明理工大学 | Chromium-free iridescent passivation liquid |
| CN109609944A (en) * | 2018-12-30 | 2019-04-12 | 王冬生 | A kind of aluminium alloy true qualities chromium-free passivating treatment agent and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110079795A (en) | 2019-08-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101851755B (en) | Magnesium alloy chromium-free fluorine-free phosphorization solution and phosphorization method | |
| CN107740085B (en) | A kind of environment-friendly composite color passivation solution and preparation method thereof | |
| CN102747356B (en) | Normal temperature calcium-manganese phosphorizing liquid | |
| CN104404492A (en) | Chromium-free passivation solution as well as preparation and using methods thereof | |
| CN102199767A (en) | Chromium-free and fluorine-free color passivation solution for electroplating Zn-Ni alloy coating and passivation method thereof | |
| US9752233B2 (en) | Process and seal coat for improving paint adhesion | |
| CN104404485B (en) | A kind of galvanized layer chromium-free passivant and preparation method thereof | |
| CN104451634B (en) | Aluminum and aluminum alloy passivation solution, preparation method and using method thereof | |
| CN1158407C (en) | Chrome-free passivating solution for protecting galvanized layer and its coating method | |
| CN110079795B (en) | Galvanized part surface treating agent and preparation method thereof | |
| CN101525747A (en) | Clean rare-earth salt passivation solution | |
| CN104498923A (en) | Colorful trivalent chromium passivation liquid, preparation method and use method thereof | |
| CN107338429B (en) | High-corrosion-resistance trivalent chromium galvanizing passivator and preparation method thereof | |
| CN111155077B (en) | Chromium-free passivation solution for electrogalvanizing and passivation process thereof | |
| CN106756939A (en) | aluminum passivation liquid and preparation method thereof | |
| CN111304572A (en) | Hot-dip galvanizing process for corrosion-resistant steel pipe | |
| CN107488845A (en) | A kind of chromium-free passivation liquid and its application method for tin plate | |
| CN105401140B (en) | A kind of zinc-plated color passivation solution and preparation method thereof | |
| CN105803440B (en) | A kind of carbon steel, galvanized sheet, aluminium are the same as rooved face pretreating agent, preparation method and metal surface pretreatment | |
| CN115074714A (en) | Composite conversion coating treatment solution for surface of tinned plate and process for preparing conversion coating by using treatment solution | |
| CN103849864B (en) | A kind of galvanized chromium-free color passivation solution, preparation and using method | |
| CN110809634A (en) | Passivating agent, metal workpiece and surface passivation method thereof | |
| CN107058991B (en) | A kind of aluminium alloy non-chromium passivator and preparation method thereof | |
| CN108950531A (en) | A kind of environment friendly silicon hydrochlorate golden yellow passivating solution and preparation method thereof | |
| CN104342691A (en) | Zinc-coated steel plate surface passivation technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20201229 Address after: 529100 floor 3, block 203, phase 2, new fortune environmental protection electroplating base, yamen Town, Xinhui District, Jiangmen City, Guangdong Province Applicant after: Jiangmen superior Chemical Technology Co.,Ltd. Address before: 230009 School of chemistry and chemical engineering, Hefei University of technology, 193 Tunxi Road, Baohe District, Hefei City, Anhui Province Applicant before: Zheng Wei |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |