CN106435549A - Steel and iron surface passivating treatment liquid - Google Patents
Steel and iron surface passivating treatment liquid Download PDFInfo
- Publication number
- CN106435549A CN106435549A CN201611037541.7A CN201611037541A CN106435549A CN 106435549 A CN106435549 A CN 106435549A CN 201611037541 A CN201611037541 A CN 201611037541A CN 106435549 A CN106435549 A CN 106435549A
- Authority
- CN
- China
- Prior art keywords
- treatment fluid
- steel
- fluosilicate
- ammonium chloride
- steel surface
- 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.)
- Granted
Links
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
Abstract
The invention discloses steel and iron surface passivating treatment liquid which contains 1-15% of hydrofluoric acid, 0.1-5% of fluosilicate, 0.1-5% of cerate, 0.1-5% of oxidants, 0.1-5% of sodium benzoate, 0.001-0.5% of dimeric surfactants, 0.001-0.005% of hexamethylenetetramine and the balance of water. Hydrochloric acid is utilized to adjust pH of the treatment liquid to 2-5, the oxidants are at least one of H2O2, sodium peroxide, ammonium persulfate and peracetic acid, and the dimeric surfactants are at least one of dodecyl dimethyl ammonium chloride and myristyl dimethyl ammonium chloride. Coatings formed on the surfaces of steel and iron are smooth, compact and high in stability, generated passivation films are excellent in corrosion resistance, and the treatment liquid is nontoxic, easy to degrade and capable of lowering environment pollution and is an environment-friendly treatment agent.
Description
Technical field
The invention belongs to field of metal surface treatment technology is and in particular to a kind of steel surface passivation treatment fluid.
Background technology
Iron and steel output is huge, and application surface is extremely wide, and there is the figure of steel products in each corner in life.But, wet
In the air moistening and the environment being contaminated, steel construction is easy to be corroded.The direct losses that steel corrosion causes mainly show
Waste in the iron and steel resource causing because of corrosion and repeat the loss manufacturing.The indirect loss that steel corrosion causes be mainly manifested in because
The aspects such as plant downtime stopping production, inefficiency and the environmental pollution corroding and bring.The most frequently used two kinds in steel corrosion protection
Anticorrosion of iron and steel treatment technology method is that steel surface chromating is processed and bonderizing.
Although, chromate conversion coating has the structure of densification and self-healing function, antiseptic property be excellent, process is easy easily
The advantages of row, process required time are shorter.But production process, reject product and stain disease discharge link pollution are all very serious,
Chromic high carcinogenic more has influence on the health of the mankind.China executes European Union Ro HS in 1 day March in 2007
Instruction, forbids in conversion processing process using harmful substances such as Cr VIs.First 12 ad hoc plannings of China《Heavy metal-polluted
Dye integrated control " 12 " planning》In clearly chromium is listed in one of five heavy metal species first having to control.
Phosphatization is called by the process that electrochemical reaction forms phosphate chemical conversion film with chemical reaction, metal can lead to
Cross Phosphating Solution to process in the anti-corrosion phosphating coat of its surface one layer of even compact of formation.Iron and steel through phosphatization pretreatment, itself is anti-corrosion
Property and significantly improving with the adhesion of organic coating, the absorbability of steel surface also effectively improves simultaneously.So be more conducive to into
Row application process and immersion oil are processed, and preferably protect iron and steel.Although applying wide bonderizing advantage, serving iron and steel well more
Antiseptical acts on, but its technique and aspect of performance still suffer from defect.Conventional phosphatizing treatment technology forms effective protecting film speed slowly,
Time is long；Conversion membrane granule is larger simultaneously, specific surface area is little, dispersibility is poor and dissolubility is relatively low, water-disintegrable poor.Phosphatization
Although micropore has good absorption property and can improve the adhesive force of paint coatings in film, weaken phosphating coat simultaneously
Corrosion resistance.The phosphate containing in Phosphating Solution, heavy metal ion cause the problems such as eutrophication, heavy metal pollution to environment.
It is cancelled because traditional handicraft gradually faces, the metal surface anticorrosive treatment technology of environment-protecting clean becomes this field
Study hotspot.The patent of such as Application No. 201210593856.5 discloses a kind of without phosphorus conversion film treating agent, using nitre
The transforming agent that the one-tenth such as sour aluminum, fluorine zirconic acid, nitric acid, sodium nitrate, Ludox, liquid silane is grouped into, can be in cleaning metal surface
Form one layer of nano ceramic coat, conversion film can be formed in iron and steel, zinc and aluminium surface, the corrosion resistant of metal coating can be significantly improved
Corrosion energy, extends it and is subject to etching time.Also technology is had to add potassium fluosilicate, cerous nitrate, for example, application number in inactivating treatment liquid
Patent for 201410650819.2 discloses a kind of tin plate surface treatment liquid and preparation method thereof, and this treatment fluid is by phosphoric acid
Disodium hydrogen, sodium pyrophosphate, ammonium titanium fluoride, potassium fluosilicate, nickel nitrate etc.；The patent of Application No. 200910265418.4 discloses
A kind of high temperature resistant metal passivator, wherein contains cerium carbonate, cerous nitrate etc.；But such passivating solution is in metal surface
The protecting film being formed is rough, and hole is larger, and compactness is bad, easily comes off, and affects its passivation effect, and then affects metal
Decay resistance.
Content of the invention
For the defect of prior art, the present invention is intended to provide a kind of steel surface passivation treatment fluid, do not contain phosphate,
Cr VI, and one layer of uniform, smooth, fine and close protecting film, corrosion resistance and good can be formed in steel surface.
The present invention is achieved by the following technical solutions.
A kind of steel surface passivation treatment fluid, containing following component：
Fluohydric acid. 1%～15%, fluosilicate 0.1%～5%, cerium salt 0.1%～5%, oxidant 0.1%～5%, sodium benzoate 0. 1%
～5%, Gemini surface active agent 0.001%～0.5%, hexamethylenetetramine 0.001%～0.005%, remaining is water, is adjusted with hydrochloric acid
The pH saving described treatment fluid is 2 ~ 5,
Wherein, described oxidant is H2O2, sodium peroxide, Ammonium persulfate., at least one in peracetic acid；
Described Gemini surface active agent is dodecyl dimethyl ammonium chloride, in dodecyldimethylamine ammonium chloride at least one
Kind, the structural formula of dodecyl dimethyl ammonium chloride is：, the structural formula of dodecyldimethylamine ammonium chloride is：.
Preferably, described steel surface passivation treatment fluid, containing following component：Fluohydric acid. 5%～8%, fluosilicate 1%～
3%, cerium salt 1%～2%, oxidant 0.8%～3%, sodium benzoate 1%～3%, Gemini surface active agent 0.005%～0.2%, six methylenes
Urotropine 0.002%～0.003%, remaining is water, is 2 ~ 5 with the pH that hydrochloric acid adjusts described treatment fluid,
Wherein, described H2O2, sodium peroxide, Ammonium persulfate., peracetic acid at least one therein；
Described Gemini surface active agent is dodecyl dimethyl ammonium chloride, dodecyldimethylamine ammonium chloride therein at least
Kind.
Preferably, described steel surface passivation treatment fluid, containing following component：Fluohydric acid. 6.3%, fluosilicate 1.8%, cerium
Salt 1.6%, oxidant 1.5%, sodium benzoate 2.3%, Gemini surface active agent 0.01%, hexamethylenetetramine 0.002%, remaining is
Water, is 2 ~ 5 with the pH that hydrochloric acid adjusts described treatment fluid,
Wherein, described H2O2, sodium peroxide, Ammonium persulfate., at least one in peracetic acid；
Described Gemini surface active agent is dodecyl dimethyl ammonium chloride, in dodecyldimethylamine ammonium chloride at least one
Kind.
Any one steel surface passivation treatment fluid above-mentioned, described fluosilicate is potassium fluosilicate, prodan, hexafluosilicic acid
At least one in magnesium, ammonium fluosilicate.
Any one steel surface passivation treatment fluid above-mentioned, described cerium salt is cerous nitrate, cerous nitrate, in cerous chloride
At least one.
The compound method of steel surface passivation treatment fluid of the present invention is：Weigh the composition of each weight portion in formula, mix
Close, after stirring, adjust treatment fluid to pH=2 ~ 5 with hydrochloric acid.
Advantages of the present invention：
（1）The steel surface passivation treatment fluid that the present invention provides, adds Gemini surface active agent, the film being formed in steel surface
The smooth fine and close, stability of layer is high, the passivating film excellent anti-corrosion performance of generation, solve film layer rough, easy to fall off thus shadow
Ring the technical problem of its passivation effect；
（2）The oxidation of divalent iron ion that hydrofluoric acid dissolution iron and steel produces is ferric ion and hydroxyl by the oxidant in formula
Ion, the Fluohydric acid. in treatment fluid forms fluorine ferrum complex ion and hydrion with ferric ion, and hydroxide ion and hydrion
Form water, promote reaction forward to carry out, reaction efficiency is high；The metal ion of the fluosilicate in fluorine ferrum complex ion and treatment fluid is anti-
Should produce be deposited in steel surface formed passivating film, due to rare-earth element cerium add so that steel surface formed passivation
Film is finer and close；
（3）The steel surface passivation treatment fluid that the present invention provides is a kind of environmentally friendly treatment technology, and the film of generation is nontoxic, no
Containing harmful substances such as hexavalent chromium, phosphate anion and heavy metal ion, raw materials used be easy to get, low cost, degradable, can
Reduce the pollution level to environment.
Brief description
The passivating film that the steel surface passivation treatment fluid of Fig. 1 embodiment 1 preparation is formed in steel surface.
The passivating film that the steel surface passivation treatment fluid of Fig. 2 embodiment 2 preparation is formed in steel surface.
The passivating film that the steel surface passivation treatment fluid of Fig. 3 embodiment 3 preparation is formed in steel surface.
The passivating film that the steel surface passivation treatment fluid of Fig. 4 embodiment 4 preparation is formed in steel surface.
The passivating film that the steel surface passivation treatment fluid of Fig. 5 embodiment 5 preparation is formed in steel surface.
The passivating film that the steel surface passivation treatment fluid of Fig. 6 comparative example preparation is formed in steel surface.
Specific embodiment
In the specific embodiment of the present invention, the Gemini surface active agent of use, dodecyl dimethyl ammonium chloride
Structural formula is：,
The structural formula of dodecyldimethylamine ammonium chloride is：.
Embodiment 1
1. a kind of steel surface passivation treatment fluid, containing following component：Fluohydric acid. 6.3%, potassium fluosilicate 1.8%, cerous nitrate 1.6%,
Peracetic acid 0.5%, H2O21.0%, sodium benzoate 2.3%, dodecyl dimethyl ammonium chloride 0.01%, hexamethylenetetramine
0.002%, remaining is water, is 4 with the pH that hydrochloric acid adjusts described treatment fluid.
The compound method of this steel surface passivation treatment fluid is：Weigh the composition of each weight portion in formula, mixing, stirring is all
After even, with hydrochloric acid regulation treatment fluid to pH=4.
Embodiment 2
A kind of steel surface passivation treatment fluid, containing following component：Fluohydric acid. 1%, prodan 0.1%, cerous nitrate 0.1%, mistake
Sodium oxide 0.1%, sodium benzoate 5%, dodecyldimethylamine ammonium chloride 0.5%, hexamethylenetetramine 0.005%, remaining is water, uses
The pH that hydrochloric acid adjusts described treatment fluid is 2.
Its preparation method, with embodiment 1, is 2 with the pH that hydrochloric acid adjusts described treatment fluid.
Embodiment 3
A kind of steel surface passivation treatment fluid, containing following component：Fluohydric acid. 15%, magnesium fluosilicate 5%, cerous chloride 5%, over cure
Sour ammonium 5%, sodium benzoate 0.1%, dodecyl dimethyl ammonium chloride 0.001%, hexamethylenetetramine 0.001%, remaining is water, uses
The pH that hydrochloric acid adjusts described treatment fluid is 5.
Its preparation method, with embodiment 1, is 5 with the pH that hydrochloric acid adjusts described treatment fluid.
Embodiment 4
A kind of steel surface passivation treatment fluid, containing following component：Fluohydric acid. 5%, ammonium fluosilicate 0.5%, potassium fluosilicate 0.5%, nitre
Sour cerium 1%, peracetic acid 0.8%, sodium benzoate 3%, dodecyl dimethyl ammonium chloride 0.1%, dodecyldimethylamine ammonium chloride
0.1%, hexamethylenetetramine 0.003%, remaining is water, is 3 with the pH that hydrochloric acid adjusts described treatment fluid.
Its preparation method, with embodiment 1, is 3 with the pH that hydrochloric acid adjusts described treatment fluid.
Embodiment 5
A kind of steel surface passivation treatment fluid, containing following component：Fluohydric acid. 8%, prodan 1%, magnesium fluosilicate 2%%, nitric acid
Sub- cerium 0.5%, cerous chloride 1.5%, H2O23%, sodium benzoate 1%, dodecyl dimethyl ammonium chloride 0.002%, myristyl two
Ammonio methacrylate 0.003%, hexamethylenetetramine 0.002%, remaining is water, is 5 with the pH that hydrochloric acid adjusts described treatment fluid,
Its preparation method, with embodiment 1, is 5 with the pH that hydrochloric acid adjusts described treatment fluid.
Comparative example
Composition does not contain Gemini surface active agent, and other are same as Example 1.
Embodiment 6
The steel surface passivation treatment fluid being respectively adopted the preparation of embodiment 1-5 processes iron and steel.At the steel surface passivation of comparative example
Reason liquid is as a comparison.
When there is the defects such as greasy dirt, corrosion, cut for steel surface, need to carry out pretreatment to obtain cleaning to steel part
Uniform surface, is conducive to improving the adhesion of passivating film.Processing procedure：Adopt after A3 iron and steel distillation washing after pretreatment
Use impregnated Passivation Treatment, 90 minutes to 150 minutes Passivation Treatment response time, 30 DEG C of reaction temperature to 60 DEG C, that is, in iron and steel
Surface forms passivating film, washes and dries up to be tested through distillation.
1. the surface topography of passivating film.
After the steel surface passivation treatment fluid of embodiment 1-5 and comparative example processes A3 iron and steel, formed blunt in A3 steel surface
Change shown in the scanning electron microscope as Fig. 1-6 of film.
The passivation being formed in steel surface by the steel surface passivation treatment fluid that Fig. 1-6 can be seen that the preparation of embodiment 1-5
Membrane structure is uniform, fine and close, and when not containing Gemini surface active agent in comparative example, the loose injustice of passivation membrane superficial tissue of formation
Whole, larger hole occurs.The passivating film surface of generation can be made more smooth, uniform it follows that adding Gemini surface active agent
Smooth, fine and close.
2. the corrosion potential after test A3 steel before processing, with the steel surface passivation treatment fluid of comparative example as a comparison, knot
Fruit is shown in Table 1.
Corrosion potential before and after table 1 A3 steel Passivation Treatment
As shown in Table 1, embodiment 1 preparation steel surface passivation treatment fluid process A3 steel before and after, its corrosion potential be respectively-
0.6367V and -0.0711V, the corrosion potential after Passivation Treatment has been shuffled 0.5656V, shows that passivating film inertia strengthens.Corrosion electricity
Shuffle and show that the inertia of iron and steel strengthens, corrosion rate reduces in position, corrosion resisting property improves.The iron and steel of embodiment of the present invention 2-5 preparation
Surface passivation treating liquid after processing A3 steel, also shuffle by its corrosion potential, and the amount of shuffling is more than 0.19V.And in comparative example
During without Gemini surface active agent, its corrosion potential amount of shuffling only has 0.0406V.It follows that interpolation Gemini surface active
After agent, so that the corrosion rate of iron and steel is reduced, corrosion resistance improves, and the steel surface passivation treatment fluid of embodiment 1 preparation is to steel
Ironing surface passivation effect is substantially better than other embodiment.
Embodiment 7
Neutral salt spray test is tested
Using neutral salt spray test（ASTM-B117）Standard, the steel surface passivation treatment fluid measuring present invention offer is in A3 steel
Surface forms the decay resistance of passivating film.Test 35 DEG C of the temperature inside the box, relative humidity 100%, mass fraction be 5% NaCl molten
Liquid, between 6.5 ~ 7.2, salt fog settling amount is 1 ~ 2mL/ (80cm to the pH value collecting solution2·h).With passivating film surface first
The time that individual red rust occurs is the anti-corrosion time, and the anti-corrosion time is as Evaluation of Corrosion Resistance result.It is respectively adopted the preparation of embodiment 1-5
, as experimental example, the steel surface passivation treatment fluid of comparative example is as a comparison case for steel surface passivation treatment fluid.Experimental result is shown in
Table 2.
Table 2 is anti-corrosion the time
As shown in Table 2, the inactivating treatment liquid that the present invention provides, the anti-corrosion time is more than 50h, and the passivating film corrosion resistance of formation is relatively
Good, the passivating film that embodiment 1 is formed, the corrosion-resistant time is up to 158h, and in comparative example without Gemini surface active agent when, resistance to
After the erosion time only has 27h it is seen then that adding Gemini surface active agent, contribute to the corrosion proof raising of passivating film being formed.
Claims (5)
1. a kind of steel surface passivation treatment fluid it is characterised in that：Containing following component：
Fluohydric acid. 1%～15%, fluosilicate 0.1%～5%, cerium salt 0.1%～5%, oxidant 0.1%～5%, sodium benzoate 0.1%～
5%, Gemini surface active agent 0.001%～0.5%, hexamethylenetetramine 0.001%～0.005%, remaining is water, is adjusted with hydrochloric acid
The pH of described treatment fluid is 2 ~ 5,
Wherein, described oxidant is H2O2, sodium peroxide, Ammonium persulfate., at least one in peracetic acid；
Described Gemini surface active agent is dodecyl dimethyl ammonium chloride, in dodecyldimethylamine ammonium chloride at least one
Kind.
2. a kind of steel surface passivation treatment fluid according to claim 1 it is characterised in that：Containing following component：Hydrogen fluorine
Acid 5%～8%, fluosilicate 1%～3%, cerium salt 1%～2%, oxidant 0.8%～3%, sodium benzoate 1%～3%, Gemini surface active
Agent 0.005%～0.2%, hexamethylenetetramine 0.002%～0.003%, remaining is water, with the pH that hydrochloric acid adjusts described treatment fluid is
2 ~ 5,
Wherein, described oxidant is H2O2, sodium peroxide, Ammonium persulfate., at least one in peracetic acid；
Described Gemini surface active agent is dodecyl dimethyl ammonium chloride, in dodecyldimethylamine ammonium chloride at least one
Kind.
3. a kind of steel surface passivation treatment fluid according to claim 1 it is characterised in that：Containing following component：Hydrogen fluorine
Acid 6.3%, fluosilicate 1.8%, cerium salt 1.6%, oxidant 1.5%, sodium benzoate 2.3%, Gemini surface active agent 0.01%, six is sub-
Tetramine 0.002%, remaining is water, is 2 ~ 5 with the pH that hydrochloric acid adjusts described treatment fluid,
Wherein, described oxidant is H2O2, sodium peroxide, Ammonium persulfate., at least one in peracetic acid；
Described Gemini surface active agent is dodecyl dimethyl ammonium chloride, in dodecyldimethylamine ammonium chloride at least one
Kind.
4. any one the steel surface passivation treatment fluid according to claim 1-3 it is characterised in that：Described fluosilicate
For at least one in potassium fluosilicate, prodan, magnesium fluosilicate, ammonium fluosilicate.
5. any one the steel surface passivation treatment fluid according to claim 1-3 it is characterised in that：Described cerium salt is nitre
At least one in sour cerium, cerous nitrate, cerous chloride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611037541.7A CN106435549B (en) | 2016-11-23 | 2016-11-23 | A kind of steel surface passivation treatment fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611037541.7A CN106435549B (en) | 2016-11-23 | 2016-11-23 | A kind of steel surface passivation treatment fluid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106435549A true CN106435549A (en) | 2017-02-22 |
| CN106435549B CN106435549B (en) | 2019-03-01 |
Family
ID=58221341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611037541.7A Active CN106435549B (en) | 2016-11-23 | 2016-11-23 | A kind of steel surface passivation treatment fluid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106435549B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107829122A (en) * | 2017-11-24 | 2018-03-23 | 绩溪山合机械有限公司 | A kind of chain inactivating treatment liquid and its passivation process |
| CN107951461A (en) * | 2017-12-25 | 2018-04-24 | 张永生 | A kind of obstetrics and gynecology department vaginal speculum expansion shade leaf piece |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1516751A (en) * | 2001-06-15 | 2004-07-28 | �ձ�������ʽ���� | Treating solution for metal surface treatment and surface treatment method |
| CN102851660A (en) * | 2012-09-29 | 2013-01-02 | 西安建筑科技大学 | Phosphorus-free and chromium-free passive film-forming solution for steel surfaces and usage method thereof |
| CN105420710A (en) * | 2015-11-16 | 2016-03-23 | 刘崴崴 | Golden chrome-free passivation solution used for surface treatment of aluminum profiles |
-
2016
- 2016-11-23 CN CN201611037541.7A patent/CN106435549B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1516751A (en) * | 2001-06-15 | 2004-07-28 | �ձ�������ʽ���� | Treating solution for metal surface treatment and surface treatment method |
| CN102851660A (en) * | 2012-09-29 | 2013-01-02 | 西安建筑科技大学 | Phosphorus-free and chromium-free passive film-forming solution for steel surfaces and usage method thereof |
| CN105420710A (en) * | 2015-11-16 | 2016-03-23 | 刘崴崴 | Golden chrome-free passivation solution used for surface treatment of aluminum profiles |
Non-Patent Citations (1)
| Title |
|---|
| 耿耀宗: "《现代水性涂料工艺.配方.应用》", 30 April 2013, 中国石化出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107829122A (en) * | 2017-11-24 | 2018-03-23 | 绩溪山合机械有限公司 | A kind of chain inactivating treatment liquid and its passivation process |
| CN107951461A (en) * | 2017-12-25 | 2018-04-24 | 张永生 | A kind of obstetrics and gynecology department vaginal speculum expansion shade leaf piece |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106435549B (en) | 2019-03-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106011816B (en) | A kind of graphene-based film agent | |
| CN109957262B (en) | Paint for material surface treatment, coating and preparation method thereof | |
| US20080286470A1 (en) | Chemical conversion coating agent and surface-treated metal | |
| CN107345297A (en) | A kind of alkaline cleaning fluid, phosphating solution and metal surface treating method | |
| CN101307448B (en) | Antiseptic treatment process for magnesium alloy section bar, especially for magnesium alloy tube | |
| CN101851755B (en) | Magnesium alloy chromium-free fluorine-free phosphorization solution and phosphorization method | |
| CN104498925B (en) | A kind of metal surface treating liquid and application based on polyfunctional group alkyl phosphate | |
| CN101985750A (en) | Treating fluid for preparing zirconium-containing coloring passive film on surface of aluminum alloy and treating method thereof | |
| CN106148974A (en) | A kind of iron and steel derusting and phosphorating agent | |
| CN102839367A (en) | Self-repairing chromium-free passivation treatment fluid used for galvanized steel coil | |
| CN101629288A (en) | Passivation treating agent for hot dip aluminum zinc plate and preparation method thereof | |
| JP4187162B2 (en) | Chemical conversion treatment agent and surface treatment metal | |
| CN109722661A (en) | Rear-earth-doped inorganic agent of a kind of basic silane for Treatment of Metal Surface and its preparation method and application | |
| CN112342537B (en) | Neutral environment-friendly stainless steel passivator and preparation method thereof | |
| JP2007002330A (en) | Surface treatment agent for zinc or zinc alloy galvanized steel sheet, and surface treated zinc or zinc alloy galvanized steel sheet | |
| CN105483681B (en) | A kind of preparation method of zinc system metal treatment fluid | |
| CA2612107A1 (en) | Method for treatment of chemically passivated galvanized surfaces to improve paint adhesion | |
| JP2011068996A (en) | Composition for surface treatment of metallic material, and treatment method | |
| CN109440121A (en) | A kind of processing technology of aluminum veneer | |
| CN107012453A (en) | A kind of method that green low temperature quickly prepares phosphating coat | |
| CN106435549A (en) | Steel and iron surface passivating treatment liquid | |
| CN102965653A (en) | Self-repairing non-phosphorus ceramic processing liquid for galvanized plate and ceramic process thereof | |
| CN105543823B (en) | A kind of method for preparing the colorful compound conversion film of titanium/selenium in aluminum alloy surface | |
| PT922123E (en) | AQUOSA SOLUTION AND PROCESS FOR THE PHOSPHATACATION OF METAL SURFACES | |
| CN103774133A (en) | Non-phosphorus chromium-free and fluoride-free conversion film-forming agent on magnesium alloy surface and application method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No.61 Xiyan Road, Yanta District, Xi'an City, Shaanxi Province, 710054 Patentee after: Shaanxi Chemical Research Institute Co.,Ltd. Address before: No.61 Xiyan Road, Xi'an City, Shaanxi Province 710054 Patentee before: SHAANXI RESEARCH DESIGN INSTITUTE OF PETROLEUM CHEMICAL INDUSTRY |