CN105522779A - Zinc-coated steel for vehicle - Google Patents
Zinc-coated steel for vehicle Download PDFInfo
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- CN105522779A CN105522779A CN201410570164.8A CN201410570164A CN105522779A CN 105522779 A CN105522779 A CN 105522779A CN 201410570164 A CN201410570164 A CN 201410570164A CN 105522779 A CN105522779 A CN 105522779A
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- compound
- zinc
- steel plate
- coated steel
- automobile
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Abstract
The invention discloses a zinc-coated steel plate for vehicle, which belongs to the field of zinc-coated steel plates. The zinc-coated steel plate is obtained by coating surface treating agent on the surface of the zinc-coated steel plate, heating up and drying, and is provided with a surface treating coated film with adhesion amount of 50mg/m<2>-500mg/m<2> at each surface, wherein the surface treating agent comprises the following components: a water-soluble zirconium compound (A), tetraalkoxy silane (B), a compound (C) with an epoxy group, a chelating agent (D), a vanadic acid compound (E) and a metal compound (F) containing one or more metals in a group including Ti, Al and Zn; and a pH value of the surface treating agent is 8-10. The zinc-coated steel plate is adjusted to satisfy certain conditions, so that the zinc-coated steel plate, which has various performances including corrosion resistance and adaptation, and has excellent conductivity under severe condition that the steel plate contacts with a lining pad and the like at low-contact pressure while the corrosion resistance is not lowed, and the like, can be provided.
Description
Technical field
The invention provides a kind of automobile-used galvanized steel plain sheet, belong to galvanized steel plain sheet field.
Background technology
Be widely used in the manufacturing industry such as outer present household electrical appliance, body of a motor car plate of hot-dip galvanizing sheet steel due to its good decay resistance, excellent coating performance and cleaning.The requirement stopping steel plate coating to hot dip is the strong adhesion of coating and substrate, does not come off, will have good welding performance, decay resistance and phosphorus characteristic in addition during Pressing Deformation, to guarantee the corrosion resistance after the adhesive force of paint film and japanning.But there is the problem such as efflorescence and stripping of coating in hot-dip galvanizing sheet steel, cause the destruction of coating, have influence on the corrosion resistance of coating further and remove property in the Punching Process of practical application.
Along with the digitized remarkable development, CPU high speed etc. of household appliances in recent years, the problem of hurt of electromagnetic wave is brought to come into one's own gradually about giving its peripheral equipment or human body.Reflection of electromagnetic wave is shielded electromagnetic wave by the former material of electric conductivity forming shielded box by shielded box.In addition, the higher electromagnetic reflectivity of electric conductivity forming the former material of shielded box is higher, electromagnetic wave
Shielding improves.Therefore, guaranteeing in the electromagnetic wave shielding performance of shielded box, the metallic plate importantly forming shielded box has high electric conductivity.In addition, because shielded box is by forming processing to manufacture to metallic plate, therefore shielded box has discontinuous portion (seam or junction surface), in this discontinuous portion, electromagnetic leakage or intrusion easily occurs.Therefore, in shielded box, logical
The liner of discontinuous portion insertion electric conductivity of being everlasting is to prevent electromagnetic leakage or intrusion.
Summary of the invention
According to above deficiency of the prior art, problem to be solved by this invention is: the automobile-used galvanized steel plain sheet providing a kind of strong adhesion, advantages of good shielding performance.
The technical solution adopted for the present invention to solve the technical problems is: a kind of automobile-used galvanized steel plain sheet, it is characterized in that, carry out heat drying and obtain by coating surface inorganic agent on automobile-used galvanized steel sheet surface, and the adhesion amount with each surface is the surface treatment capsule of 600 ~ 800mg/m2, wherein, described surface conditioning agent, contain: water soluble aluminum compound (A), tetraalkoxysilane (B), there is the compound (C) of epoxy radicals, chelating agent (D), vanadic acid compound (E) and containing by Ti, the metallic compound (F) of the metal of more than at least a kind in the group of Al and Zn composition, pH is 8 ~ 10, and be adjusted to the condition meeting following (I) ~ (V),
(I) the Zr reduced mass of water soluble aluminum compound (A) and the mass ratio (A/B) of tetraalkoxysilane (B) are
1.0～6.0；
(II) tetraalkoxysilane (B) is 0.1 ~ 1.6 with the mass ratio (B/C) of the compound (C) with epoxy radicals;
(III) tetraalkoxysilane (B) is 0.3 ~ 2.0 with the mass ratio (B/D) of chelating agent (D);
(IV) the V reduced mass of vanadic acid compound (E) and the mass ratio (E/D) of chelating agent (D) are 0.03 ~ 1.0;
(V) the total reduced mass of metal of metallic compound (F) and the mass ratio (F/D) of chelating agent (D) are 0.05 ~ 0.8.
In the formula of above-mentioned expression mass ratio, A represents water soluble aluminum compound (A) Zr reduced mass, B represents the quality of tetraalkoxysilane (B), C represents the quality of the compound (C) with alkoxyl, D represents the quality of chelating agent (D), E represents the V reduced mass of vanadic acid compound (E), and F represents the total reduced mass of metal of metallic compound (F).
Described surface conditioning agent also contains lubricant (G), and containing relative to the total solid composition of described surface conditioning agent being the described lubricant (G) of 1 ~ 10 mass percent.
Described surface conditioning agent also contains nonionic acrylic resin emulsion (H), and containing relative to the total solid composition of described surface conditioning agent being the described nonionic acrylic resin emulsion (H) of 0.5 ~ 45.0 mass percent.Containing the described nonionic acrylic resin emulsion (H) relative to the total solid composition of described surface conditioning agent being 0.5 ~ 4.5 mass percent.
Compared with prior art, the beneficial effect that this automobile-used galvanized steel plain sheet has is: can provide there is corrosion resistance and each performance of adaptation, particularly under the condition not reducing corrosion resistance, the automobile-used galvanized steel plain sheet that under the harsh conditions that steel plate contacts with liner etc. with low contact, conductibility is also excellent.
Detailed description of the invention
The present invention will be further described below:
Embodiment 1:
Carry out heat drying and obtain by coating surface inorganic agent on automobile-used galvanized steel sheet surface, and the adhesion amount with each surface is the surface treatment capsule of 50 ~ 500mg/m2, wherein, described surface conditioning agent, contain: water soluble aluminum compound (A), tetraalkoxysilane (B), there is the compound (C) of epoxy radicals, chelating agent (D), vanadic acid compound (E) and containing by Ti, the metallic compound (F) of the metal of more than at least a kind in the group of Al and Zn composition, pH is 8 ~ 10, and be adjusted to the condition meeting following (I) ~ (V),
(I) the Zr reduced mass of water soluble aluminum compound (A) and the mass ratio (A/B) of tetraalkoxysilane (B) are 1.0 ~ 6.0;
(II) tetraalkoxysilane (B) is 0.1 ~ 1.6 with the mass ratio (B/C) of the compound (C) with epoxy radicals;
(III) tetraalkoxysilane (B) is 0.3 ~ 2.0 with the mass ratio (B/D) of chelating agent (D);
(IV) the V reduced mass of vanadic acid compound (E) and the mass ratio (E/D) of chelating agent (D) are 0.03 ~ 1.0;
(V) the total reduced mass of metal of metallic compound (F) and the mass ratio (F/D) of chelating agent (D) are 0.05 ~ 0.8.
In the formula of above-mentioned expression mass ratio, A represents water soluble aluminum compound (A) Zr reduced mass, B represents the quality of tetraalkoxysilane (B), C represents the quality of the compound (C) with alkoxyl, D represents the quality of chelating agent (D), E represents the V reduced mass of vanadic acid compound (E), and F represents the total reduced mass of metal of metallic compound (F).Described surface conditioning agent also containing lubricant (G), and contains the total solid composition relative to described surface conditioning agent
It is the described lubricant (G) of 1 ~ 10 mass percent.
Described surface conditioning agent also contains nonionic acrylic resin emulsion (H), and containing relative to the total solid composition of described surface conditioning agent being the described nonionic acrylic resin emulsion (H) of 0.5 ~ 45.0 mass percent.
Containing the described nonionic acrylic resin emulsion (H) relative to the total solid composition of described surface conditioning agent being 0.5 ~ 4.5 mass percent.
Hot-dip galvanizing sheet steel (GI) or by the alloyed hot-dip galvanized steel sheet (GA) after its alloying, can also enumerate galvanizing Zn-5 mass percent Al alloy-steel plate (GF), galvanizing-55 mass percent aluminium alloy steel plate (GL), plated steel sheet (EG), electrogalvanizing-Ni alloy-steel plate (Zn-11 mass percent Ni) etc.
When using the surface conditioning agent containing water soluble aluminum compound to form surface treatment capsule on the surface of automobile-used galvanized steel plain sheet, the each performance of corrosion resistance of this steel plate after the adaptation of the corrosion resistance of this steel plate, the tunicle of formation and alkali degreasing is all excellent, can obtain the automobile-used galvanized steel plain sheet of heat resistance as the characteristic of inorganic tunicle and excellent weldability.
The kind of the water soluble aluminum compound (A) used in the present invention is not particularly limited, can enumerate such as: zirconium nitrate, zirconyl nitrate, zirconium oxyacetate, zirconium oxysulfate, zirconium carbonate, ammonium zirconyl carbonate, zirconyl carbonate potassium, zirconyl carbonate sodium, fluorine zirconic acid etc., can be used more than one in them.Wherein, from the corrosion resistance of galvanized steel plain sheet and the more excellent aspect of conductibility
Set out, preferred ammonium zirconyl carbonate and zirconyl carbonate sodium.
The surface conditioning agent used in the present invention contains tetraalkoxysilane (B).When using the surface conditioning agent simultaneously containing above-mentioned water-soluble zirconium and tetraalkoxysilane to form surface treatment capsule on the surface of automobile-used galvanized steel plain sheet, the each performance of corrosion resistance of this steel plate after the adaptation of the corrosion resistance of this steel plate, the tunicle of formation and alkali degreasing is all excellent, can obtain the automobile-used galvanized steel plain sheet of heat resistance as the characteristic of inorganic tunicle and excellent weldability.The reason obtaining these good characteristics is still not clear, but infer be due to and with tetraalkoxysilane (B) and above-mentioned water-soluble zirconium (A) time, water-soluble zirconium (A) and tetraalkoxysilane (B) formation has the cause of three-dimensional cross-linked tunicle.
The kind of the tetraalkoxysilane (B) used in the present invention, as long as there are in a molecule four alkoxyls be then not particularly limited, tetramethoxy-silicane, tetraethoxysilane, tetrapropoxysilane and butoxy silane etc. can be enumerated, more than a kind in them can be used.Be not particularly limited as alkoxyl, the alcoxyl that carbon number is 1 ~ 4 can be enumerated
Base, preferred carbon number 1 ~ 3, is more preferably carbon number 1 ~ 2.That is, more excellent from the view point of the corrosion resistance of automobile-used galvanized steel plain sheet, preferred tetraethoxysilane and tetramethoxy-silicane.
Claims (4)
1. an automobile-used galvanized steel plain sheet, it is characterized in that, carry out heat drying and obtain by coating surface inorganic agent on automobile-used galvanized steel sheet surface, and the adhesion amount with each surface is the surface treatment capsule of 600 ~ 800mg/m2, wherein, described surface conditioning agent, contain: water soluble aluminum compound (A), tetraalkoxysilane (B), there is the compound (C) of epoxy radicals, chelating agent (D), vanadic acid compound (E) and containing by Ti, the metallic compound (F) of the metal of more than at least a kind in the group of Al and Zn composition, pH is 8 ~ 10, and be adjusted to the condition meeting following (I) ~ (V), (I) the Zr reduced mass of water soluble aluminum compound (A) and the mass ratio (A/B) of tetraalkoxysilane (B) are 1.0 ~ 6.0, (II) tetraalkoxysilane (B) is 0.1 ~ 1.6 with the mass ratio (B/C) of the compound (C) with epoxy radicals, (III) tetraalkoxysilane (B) is 0.3 ~ 2.0 with the mass ratio (B/D) of chelating agent (D), (IV) the V reduced mass of vanadic acid compound (E) and the mass ratio (E/D) of chelating agent (D) are 0.03 ~ 1.0,
(V) the total reduced mass of metal of metallic compound (F) and the mass ratio (F/D) of chelating agent (D) are 0.05 ~ 0.8.
2. automobile-used galvanized steel plain sheet as claimed in claim 1, is characterized in that: described surface conditioning agent also contains lubricant (G),
And containing relative to the total solid composition of described surface conditioning agent being the described lubricant (G) of 1 ~ 10 mass percent.
3. automobile-used galvanized steel plain sheet as claimed in claim 1 or 2, it is characterized in that: described surface conditioning agent also contains nonionic acrylic resin emulsion (H), and containing relative to the total solid composition of described surface conditioning agent being the described nonionic acrylic resin emulsion (H) of 0.5 ~ 45.0 mass percent.
4. automobile-used galvanized steel plain sheet as claimed in claim 3, is characterized in that: containing the described nonionic acrylic resin emulsion (H) relative to the total solid composition of described surface conditioning agent being 0.5 ~ 4.5 mass percent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410570164.8A CN105522779A (en) | 2014-10-23 | 2014-10-23 | Zinc-coated steel for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410570164.8A CN105522779A (en) | 2014-10-23 | 2014-10-23 | Zinc-coated steel for vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105522779A true CN105522779A (en) | 2016-04-27 |
Family
ID=55765460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410570164.8A Pending CN105522779A (en) | 2014-10-23 | 2014-10-23 | Zinc-coated steel for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105522779A (en) |
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2014
- 2014-10-23 CN CN201410570164.8A patent/CN105522779A/en active Pending
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| C06 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20160427 |