CN106086743A - A kind of galvanizing additive, galvanizing plating agent and hot galvanizing method, galvanizing material - Google Patents
A kind of galvanizing additive, galvanizing plating agent and hot galvanizing method, galvanizing material Download PDFInfo
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- CN106086743A CN106086743A CN201610581563.3A CN201610581563A CN106086743A CN 106086743 A CN106086743 A CN 106086743A CN 201610581563 A CN201610581563 A CN 201610581563A CN 106086743 A CN106086743 A CN 106086743A
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- 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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
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- 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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
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Abstract
The invention discloses a kind of galvanizing additive, galvanizing plating agent and hot galvanizing method, galvanizing material.This additive is made up of the component of following parts by weight: Ce2O30.25～0.35 part, Al 3～5 parts, Mg 2～2.8 parts, Si 0.1～0.5 part, Sn 1～3 parts, Bi 0.1～0.4 part, Mn 0.2～1 part.Add by formula ratio when this galvanizing additive uses and zinc liquid is made plating agent.Use this plating agent can be formed containing rare earth oxide Ce2O3With metal element A l, Mg, Si, Sn, Bi and the galvanizing coating of Mn, improve the decay resistance of galvanizing coating, decay resistance is more than 10 times of conventional Hot Galvanizing Technology, is up to 12.25 times of conventional Hot Galvanizing Technology.
Description
Technical field
The invention belongs to Hot Galvanizing Technology field, be specifically related to a kind of galvanizing additive, also relate to a kind of heat
Zinc-plated plating agent and use the hot galvanizing method of this plating agent, this hot galvanizing method gained galvanizing material.
Background technology
Hot Galvanizing Technology has become ferrous materials anticorrosion aspect and has applied effective method most basic, most economical.Galvanizing
It is in the zinc liquid that the steel part after eliminating rust immerses about 500 DEG C fusings, makes steel beam column surface attachment zinc layers, thus play antiseptical
Purpose.Its antiseptical mechanism is owing to the standard electrode potential of zinc is defeated by ferrum, therefore zinc coat tool in water and malaria
There is the effect of anode loss protection base steel, such that it is able to greatly extend the service life of steel.
The operation of galvanizing is that first matrix carries out pickling, removes the ferrum oxide of matrix surface, and after pickling, matrix passes through
Ammonium chloride or solder(ing)acid or ammonium chloride carry out with zinc chloride mixed aqueous solution helping plating, cleaning, and are then fed into hot dip
Zinc groove processes, makes motlten metal and iron-based precursor reactant generate alloy-layer, so that matrix combines with both coating.
It is uniform that hot galvanizing piece coating has coating, and adhesive force is strong, service life the advantage such as length.But, due to (coastal by atmospheric environment
Salt fog and chemical industry Acid Rain Zone) impact, cause conventional galvanizing material corrosion serious, certain areas are necessary for more for even 5～10 years
Change, be badly in need of carrying out further novel hot galvanizing technical research, improve the decay resistance of coating.
In prior art, CN105331918A discloses a kind of superhigh intensity hot dip galvanizing-Al-Mg-Si alloy coated steel
Silk and preparation method thereof, described Zn-Al-Mg-Si alloy layer consists of by mass percentage: Zn 30-97%, Al 5-
80%, Mg 0.02-11%, Si 0.01-5.0%, mass percent sum is absolutely.In its preparation method, in wire drawing
Carrying out hot dip galvanizing-Al-Mg-Si alloy coating afterwards, the temperature of hot-dip is 470-720 DEG C, and the time is 30-60s.This alloy
Coating makes alloy layer steel bar have the advantages that superhigh intensity, underrelaxation degree, antiseptic property are excellent to a certain extent, but this alloy
The corrosion resistance of steel bar must be improved relatively limited by coating, is not met by the use under exceedingly odious climatic environment.
Summary of the invention
It is an object of the invention to provide a kind of galvanizing additive, be added in zinc liquid using, can be greatly enhanced
The decay resistance of galvanizing coating.
Second object of the present invention is to provide a kind of galvanizing containing above-mentioned additive plating agent.
Third object of the present invention is to provide a kind of hot galvanizing method using above-mentioned galvanizing plating agent.
Fourth object of the present invention is to provide the galvanizing material obtained by a kind of above-mentioned hot galvanizing method.
In order to realize object above, the technical solution adopted in the present invention is:
A kind of galvanizing additive, is made up of the component of following parts by weight: Ce2O30.25～0.35 part, Al 3～5
Part, Mg 2～2.8 parts, Si 0.1～0.5 part, Sn 1～3 parts, Bi 0.1～0.4 part, Mn 0.2～1 part.
Preferably, described galvanizing additive, it is made up of the component of following parts by weight: Ce2O30.30～0.35
Part, Al 3～5 parts, Mg 2～2.8 parts, Si 0.1～0.5 part, Sn 1～3 parts, Bi 0.1～0.4 part, Mn 0.2～1 part.
The galvanizing additive of the present invention, is added by formula ratio during use and makes plating agent in zinc liquid.
A kind of galvanizing plating agent, is made up of the component of following mass percent: Ce2O30.25%～0.35%, Al 3%
～5%, Mg 2%～2.8%, Si 0.1%～0.5%, Sn 1%～3%, Bi 0.1%～0.4%, Mn 0.2%～
1%, surplus is Zn.
Preferably, described galvanizing plating agent, it is made up of the component of following mass percent: Ce2O30.30%～
0.35%, Al 3%～5%, Mg 2%～2.8%, Si 0.1%～0.5%, Sn 1%～3%, Bi 0.1%～0.4%,
Mn 0.2%～1%, surplus is Zn.
The galvanizing plating agent of the present invention, is addition rare earth oxide cerium sesquioxide (Ce in zinc liquid2O3), element aluminum
(Al), element magnesium (Mg), elemental silicon (Si), element tin (Sn), element bismuth (Bi), element manganese (Mn) are made；Use this plating agent
Can be formed containing rare earth oxide Ce2O3With metal element A l, Mg, Si, Sn, Bi and the galvanizing coating of Mn, improve galvanizing
The decay resistance of coating, decay resistance is more than 10 times of conventional Hot Galvanizing Technology, is up to conventional Hot Galvanizing Technology
12.25 times.
In zinc liquid, add Trace Aluminum have many advantages: the oxidation of zinc liquid in production process can be reduced.Due to aluminum and oxygen
Affinity oxidized greatly and first, zinc liquid Surface Creation Al2O3Protective film, Al2O3Protective film dense structure, internal scarce
Fall into few, oxygen can be stoped to base material diffusion inside, reduce the contact probability of oxygen and base steel, thus plating can be effectively prevented
The oxidation on layer surface；Plating adhesion can be improved with thinning zinc-plated thickness.Ensureing steel beam column Uniformity of zinc coat and coating
Under thickness premise, coating is the thinnest more economical；Can resist the silicon in steel to zinc-plated harmful effect, meanwhile, Zn is as matrix unit
Element makes component form the gradient potential difference of Al-Zn-Fe between environmental corrosion medium and steel matrix, it is possible to slow down electrochemistry rotten
Erosion speed；Al has the strongest self-passivation function, its compound use with Zn can in conjunction with Zn from sacrificial and the self-shield of Al
Advantage.Al is often enriched on the interface of steel matrix and coating, has the strongest retardation, no for the reaction of Fe-Zn alloy-layer
Only change its organizational structure, also add the fineness of its overlay coating, and interface can be stoped to crack.In hot dip
Cheng Zhong, owing to the affinity of Fe-Al is relatively strong, generates one layer of Fe-Al intermetallic compound Fe in the part being close to base steel2Al5Or
FeAl3, inhibit the growth of Fe-Zn compound simultaneously, make coating thinning.The formation of Fe-Al intermetallic compound can improve
The anode performance of coating, reduces the illeffects of ferrum in zinc liquid.In plating agent, element aluminum (Al) weight/mass percentage composition is between 3%
～between 5%.
In zinc liquid, addition element magnesium (Mg) is bigger to the tissue effect of zinc coat, thus affects quality of coating.At zinc liquid
The Mg that middle addition is appropriate, can significantly improve the decay resistance of coating, it is also possible in elimination zinc liquid, lead is to corrosion resistance not
Good impact.Research shows, when the content of Mg is less than 1% (mass content), less on coating microstructure impact, its tissue is the most not
Can change, coating is mainly columnar structure, and crackle often produces at cylindrulite grain boundaries, after applying certain stress, and crackle edge
Crystal boundary extends to coating surface so that crackle crosses zinc layers and causes base steel to expose, and causes base steel to corrode.When the content of Mg is more than
When 1%, along with Mg content increases, coating surface then forms Mg rich region, thus crystal grain thinning, make dense structure.Mg mass
Content is about 3%.Mg too high levels, the viscosity of zinc liquid can substantially increase, and coating surface becomes milky so that coating becomes
Crisp, will also result in zinc liquid simultaneously and the wettability of steel matrix is declined.In plating agent, the weight/mass percentage composition of element magnesium (Mg) should be less than
3%.
Addition element silicon (Si) in zinc liquid, Si dissolubility in solid-state Zn, Al is minimum and separates out the Silicon-rich of tiny needle-like
It is distributed in branch intergranular mutually；Internal layer is intermetallic compounds layer, and the silicone content during the type of intermetallic compounds layer is bathed with zinc has
Closing, in 1.5% (mass content) Si zinc is bathed, intermetallic compounds layer is made up of two-layer, is Fe near base steel side2Al5, lean on
Nearly outer layer is α-FeAlSi；And in 1.3% (mass content) Si zinc is bathed, intermetallic compounds layer is formed by 3 layers, near base steel
Side is Fe2A15, intermediate layer is FeA13, it is α-FeAlSi near outer layer.It addition, there may also be Fe-Al-Zn-Si quaternary phase.
In plating agent, the weight/mass percentage composition of elemental silicon Si not should be greater than 0.5%.
Addition element stannum (Sn) in zinc liquid, Sn, as the main adding elements of hot-dip galvanized alloy, can significantly inhibit high silicon and live
The misgrowth of property steel hot dip Fe-Zn layer, makes Zinc Coating Thickness be obviously reduced.In zinc is bathed, add Sn can reduce active steel even
The growth rate of zinc-iron alloy phase in high silicon steel and phosphor-containing steel.The weight/mass percentage composition of element tin Sn should be the not highest, be 1%～
Between 3% (mass content).
In zinc liquid, addition element bismuth (Bi) can improve zinc bath mobility, reduces the surface tension of zinc liquid, after making plating piece immersion plating
In lifting process, the liquid Zn on surface can preferably reflux.The additionally effect protected to pot Han Bi in zinc liquid, extends zinc pot
Service life.Meanwhile, structure, tack, passivation and resistance to white rust and the coating etc. of coating are all had no adverse effect by Bi.Bi
Can also reduce the growing amount of cadmia, but it can not the misgrowth of inhibitory activity steel.Bi zinc bathe in effect and lead phase
Seemingly, but there is no the toxicity of lead.The weight/mass percentage composition of element bismuth Bi is not more than 0.4%.
Addition element manganese (Mn) in zinc liquid, a small amount of Mn can improve the corrosion resistance of coating, adhesiveness and processing and forming
Performance.The weight/mass percentage composition of element manganese Mn should be between 0.2%～1%.
Rare earth element has higher activity and affinity, is widely used in the alloy, and research shows, in heat
Galvanizing process adds the performance that rare earth element can also improve, reduces the thickness of coating, increase decay resistance.
A kind of hot galvanizing method using above-mentioned galvanizing plating agent, including matrix carrying out pickling successively, washing, help
Obtain preplating matrix after plating, drying, preplating matrix immersion described galvanizing plating agent will carry out galvanizing, by water-cooled, passivation, i.e.
?；Wherein, the temperature of described galvanizing plating agent is 440～460 DEG C, and the immersion plating time is 50～300s.
The thickness of the coating that galvanizing is formed is 110～130 μm.
Described pickling is to use hydrochloric acid to carry out pickling.Pickling to matrix surface rustless after wash.Preferably, described salt
The mass concentration of acid is 15%.
Help the component that plating quickening liquid used contains following concentration: ZnCl280～90g/L, NH4Cl 100～110g/L.Help
In plating solution, surplus is water.Preferably, quickening liquid is made up of the component of following concentration: ZnCl2 87g/L、NH4Cl 102g/L, surplus
For water.
The temperature helping plating quickening liquid used is 80～100 DEG C, and helping the plating time is 40～60s.
Described passivation is chromating.In order to reduce the chemism of zinc, chromating liquid is used to be passivated place
Reason, makes zinc layers surface form one layer of chromate conversion coating layer.
A kind of galvanizing material obtained by above-mentioned hot galvanizing method.
The hot galvanizing method of the present invention, is matrix carries out pickling successively, to wash, help water-cooled, passivation after plating, galvanizing,
Wherein said galvanizing uses above-mentioned galvanizing plating agent；Gained galvanizing material has the decay resistance of excellence, is somebody's turn to do meanwhile
The rare earth modified galvanizing coating that hot galvanizing method is formed, is greatly improved with basal body binding force；This hot galvanizing method technique is simple,
Easy to operate, low cost, remarkable in economical benefits.
Accompanying drawing explanation
Fig. 1 is the metallographic structure figure in embodiment 6 gained galvanizing material at galvanizing coating.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is further illustrated.
In detailed description of the invention, the matrix used by galvanizing is base steel material.
Chromating liquid used is made up of the component of following concentration: the chromic anhydride of 150～200g/L, 2.5g/L
H2SO4, surplus is water.
Embodiment 1
The galvanizing additive of the present embodiment, is made up of the component of following parts by weight: Ce2O30.25 part, Al 4 parts,
Mg 2.4 parts, Si 0.4 part, Sn 2 parts, Bi 0.1 part, Mn 0.5 part.
The galvanizing plating agent of the present embodiment, is made up of the component of following mass percent: Ce2O30.25%, Al 4%, Mg
2.4%, Si 0.4%, Sn 2%, Bi 0.1%, Mn 0.5%, surplus is Zn.
The galvanizing plating agent of the present embodiment is by cerium sesquioxide (Ce2O3), element aluminum (Al), element magnesium (Mg), elemental silicon
(Si), element tin (Sn), element bismuth (Bi), element manganese (Mn) addition zinc liquid are made.
The hot galvanizing method of the present embodiment, comprises the following steps:
1) pickling: the hydrochloric acid using mass concentration to be 15% carries out pickling to matrix, and pickling to matrix surface is rustless laggard
Row washing；
2) plating is helped: the matrix after washing is helped plating, post-drying, obtains preplating matrix；Help quickening liquid used by plating by with
The component composition of lower concentration: ZnCl2 87g/L、NH4Cl 102g/L, surplus is water；The temperature of quickening liquid is 80 DEG C, helps the plating time
For 60s；
3) galvanizing: being immersed by preplating matrix in above-mentioned galvanizing plating agent and carry out galvanizing, water-cooled obtains zinc-plated product；Described
The temperature of galvanizing plating agent is 440 DEG C, and the immersion plating time is 300s；
4) passivation: use chromating liquid that zinc-plated product are passivated, obtain galvanizing material.Chromate used is blunt
Change liquid to be made up of the component of following concentration: the chromic anhydride of 150g/L, the H of 2.5g/L2SO4, surplus is water.
The galvanizing additive of embodiment 2-9 and galvanizing plate the component of agent as shown in table 1,2.
The component table (unit: parts by weight) of the galvanizing additive of table 1 embodiment 2-9
| Embodiment | Ce<sub>2</sub>O<sub>3</sub> | Al | Mg | Si | Sn | Bi | Mn |
| 2 | 0.26 | 3 | 2.8 | 0.5 | 3 | 0.4 | 0.7 |
| 3 | 0.27 | 5 | 2.0 | 0.1 | 2.5 | 0.3 | 0.4 |
| 4 | 0.28 | 3 | 2.2 | 0.2 | 1.5 | 0.2 | 0.2 |
| 5 | 0.29 | 4 | 2.4 | 0.3 | 1 | 0.3 | 1.0 |
| 6 | 0.30 | 5 | 2.6 | 0.4 | 1.5 | 0.1 | 0.8 |
| 7 | 0.32 | 5 | 2.3 | 0.2 | 3 | 0.2 | 0.3 |
| 8 | 0.34 | 3 | 2.5 | 0.5 | 2 | 0.4 | 0.5 |
| 9 | 0.35 | 4 | 2.7 | 0.3 | 2.5 | 0.3 | 0.6 |
The component table (unit: %, mass content) of the galvanizing plating agent of table 2 embodiment 2-9
| Embodiment | Ce<sub>2</sub>O<sub>3</sub> | Al | Mg | Si | Sn | Bi | Mn | Zn |
| 2 | 0.26 | 3 | 2.8 | 0.5 | 3 | 0.4 | 0.7 | Surplus |
| 3 | 0.27 | 5 | 2.0 | 0.1 | 2.5 | 0.3 | 0.4 | Surplus |
| 4 | 0.28 | 3 | 2.2 | 0.2 | 1.5 | 0.2 | 0.2 | Surplus |
| 5 | 0.29 | 4 | 2.4 | 0.3 | 1 | 0.3 | 1.0 | Surplus |
| 6 | 0.30 | 5 | 2.6 | 0.4 | 1.5 | 0.1 | 0.8 | Surplus |
| 7 | 0.32 | 5 | 2.3 | 0.2 | 3 | 0.2 | 0.3 | Surplus |
| 8 | 0.34 | 3 | 2.5 | 0.5 | 2 | 0.4 | 0.5 | Surplus |
| 9 | 0.35 | 4 | 2.7 | 0.3 | 2.5 | 0.3 | 0.6 | Surplus |
The hot galvanizing method of embodiment 2-9 is respectively adopted the galvanizing plating agent of embodiment 2-9, and technical parameter is as shown in table 3,
Remaining is with embodiment 1.
The technical parameter of the hot galvanizing method of table 3 embodiment 2-9
The bonding state of galvanizing coating in embodiment 6 gained galvanizing material with matrix is detected, metallographic structure
Figure is as shown in Figure 1.It will be seen from figure 1 that at the calmodulin binding domain CaM of galvanizing coat inside and coating with matrix, all without obvious gas
Hole, with loose, illustrates that the hot galvanizing method gained galvanizing coating structure of the present invention is fine and close, and concordance is good, with the connexus of matrix
Amount height.
Experimental example 1
The thickness of the galvanizing coating of embodiment 1-9 gained galvanizing material is measured by this experimental example, result such as table 4
Shown in.
The thickness (unit: μm) of the galvanizing coating of table 4 embodiment 1-9 gained galvanizing material
Experimental example 2
The decay resistance of embodiment 1-9 gained galvanizing material is tested by the present embodiment.
Decay resistance method of testing: use the galvanizing coating of copper accelerated acetic acid salt spray experimental test galvanizing material
Decay resistance, there is average time as foundation in record red rust, and cycle testing time is 24h, and statistical data is as shown in table 5.
The corrosive nature test result of table 5 embodiment 1-9 gained galvanizing material
As can be seen from Table 5, the conventional Hot Galvanizing Technology 96h (the 4th day) in on-test occurs in that red rust.Embodiment
The galvanizing plating agent of 1-9 with the addition of rare earth oxide, embodiment 1 and embodiment 2, plate agent middle rare earth Ce2O3Quality
Content is respectively 0.25% and 0.26%, and test piece starts red rust occur at 424h, 360h respectively；The test piece of embodiment 3 exists
There is red rust in 576h；There is red rust at 672h, 749h the most respectively in the test piece of embodiment 4 and embodiment 5, this bi-material
The galvanizing coating corrosion resistance of system can add more than 6 times relative to conventional Hot Galvanizing Technology；The test piece of embodiment 6 is
There is red rust in 1176h, and compared to conventional Hot Galvanizing Technology, the decay resistance of galvanizing coating adds 12.25 times；Embodiment
7, there is red rust at 1032h in the test piece of 8,9, and the decay resistance of the galvanizing coating of these three material system is relative to conventional warm
Galvanizing technique adds more than 10.5 times.Result of the test shows, the galvanizing coating that the galvanizing plating agent of the present invention is formed resists
Corrosive nature is greatly improved.
Claims (10)
1. a galvanizing additive, it is characterised in that: it is made up of the component of following parts by weight: Ce2O30.25～0.35
Part, Al 3～5 parts, Mg 2～2.8 parts, Si 0.1～0.5 part, Sn 1～3 parts, Bi 0.1～0.4 part, Mn 0.2～1 part.
Galvanizing additive the most according to claim 1, it is characterised in that: it is made up of the component of following parts by weight:
Ce2O30.30～0.35 part, Al 3～5 parts, Mg 2～2.8 parts, Si 0.1～0.5 part, Sn 1～3 parts, Bi 0.1～0.4
Part, Mn 0.2～1 part.
3. a galvanizing plating agent, it is characterised in that: it is made up of the component of following mass percent: Ce2O30.25%～
0.35%, Al 3%～5%, Mg 2%～2.8%, Si 0.1%～0.5%, Sn 1%～3%, Bi 0.1%～0.4%,
Mn 0.2%～1%, surplus is Zn.
Galvanizing the most according to claim 3 plating agent, it is characterised in that: it is made up of the component of following mass percent:
Ce2O30.30%～0.35%, Al 3%～5%, Mg 2%～2.8%, Si 0.1%～0.5%, Sn 1%～3%, Bi
0.1%～0.4%, Mn 0.2%～1%, surplus is Zn.
5. the hot galvanizing method using galvanizing as claimed in claim 3 plating agent, it is characterised in that: include depending on matrix
Secondary carry out pickling, wash, help plating, dry after preplating matrix, will preplating matrix immerse described galvanizing plating agent in carry out hot dip
Zinc, by water-cooled, passivation, to obtain final product；Wherein, described galvanizing plating agent temperature be 440～460 DEG C, the immersion plating time be 50～
300s。
Hot galvanizing method the most according to claim 5, it is characterised in that: described pickling is to use hydrochloric acid to carry out pickling.
Hot galvanizing method the most according to claim 5, it is characterised in that: help the group that plating quickening liquid used contains following concentration
Point: ZnCl280～90g/L, NH4Cl 100～110g/L.
8. according to the hot galvanizing method described in claim 5 or 7, it is characterised in that: help the temperature of plating quickening liquid used be 80～
100 DEG C, helping the plating time is 40～60s.
Hot galvanizing method the most according to claim 5, it is characterised in that: described passivation is chromating.
10. the galvanizing material obtained by a hot galvanizing method as claimed in claim 5.
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| CN201610581563.3A CN106086743B (en) | 2016-07-21 | 2016-07-21 | Additive for hot galvanizing, hot galvanizing plating agent and hot galvanizing method, and hot galvanizing material |
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| CN106086743B CN106086743B (en) | 2019-12-27 |
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| CN107142435A (en) * | 2017-06-23 | 2017-09-08 | 遵义鑫华源电力设备有限公司 | Power iron fitting hot dip galvanizing process |
| CN110241369A (en) * | 2019-05-24 | 2019-09-17 | 湖南创林新材料科技有限公司 | A kind of hot dip zinc-aluminium nickel tantalum alloy and the method for hot galvanizing |
| CN111363993A (en) * | 2020-03-24 | 2020-07-03 | 句容市茅山交通工程镀锌材料有限公司 | Modified galvanizing treatment process for steel |
| CN111850447A (en) * | 2020-07-28 | 2020-10-30 | 攀钢集团研究院有限公司 | High-performance zinc-aluminum-magnesium coated steel plate and preparation method thereof |
| CN113046671A (en) * | 2021-03-11 | 2021-06-29 | 南京工程学院 | Nano CeO2Method for enhancing corrosion resistance of ZnAl-based composite material |
| CN113699475A (en) * | 2021-09-01 | 2021-11-26 | 四川振鸿钢制品有限公司 | Hot-dip galvanizing method for steel |
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