CN104213062A - Galvanized plate with consistent mechanical deformation performance and preparation process thereof - Google Patents
Galvanized plate with consistent mechanical deformation performance and preparation process thereof Download PDFInfo
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- CN104213062A CN104213062A CN201410469400.7A CN201410469400A CN104213062A CN 104213062 A CN104213062 A CN 104213062A CN 201410469400 A CN201410469400 A CN 201410469400A CN 104213062 A CN104213062 A CN 104213062A
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Abstract
The invention discloses a galvanized plate with consistent mechanical deformation performance and a preparation process thereof. The galvanized plate consists of a processed steel base plate and a galvanized layer plated on the surface, wherein the elongation of the galvanized plate is 36-45%. The preparation process comprises the following steps: preprocessing of the steel base plate: the steel base plate is cold rolled; and the cold rolling reduction rate is not lower than 50%; preparation of galvanizing solution; annealing: the annealing temperature is controlled within 780-800 DEG C; the heating speed is 50-80 DEG C/s; and the grain size is controlled; and hot galvanizing: the hot galvanizing is performed after the annealing; the galvanizing temperature is 460 DEG C; and the surface preheating temperature of the steel base plate is 460-480 DEG C. The mechanical deformation performance of the galvanized layer is improved, so that the mechanical deformation performance of the galvanized layer is substantially consistent with the mechanical deformation performance of the base plate, the complex deformation performance of the plate is improved, the annealing and heating speed is quickened, the grain consistency of the plate is enhanced, and the complex deformation coefficient of the plate is improved.
Description
Technical field
The present invention relates to galvanized sheet field, particularly relate to galvanized sheet and preparation technology thereof that a kind of mechanical deformation performance is consistent.
Background technology
Galvanized sheet is that at surface of steel plate, be coated with layer of metal zinc, the steel plate of this zinc coating is called galvanized sheet or steel plate galvanized in order to prevent that surface of steel plate from being corroded, to extend its work-ing life.Galvanized sheet is widely used in the industries such as building, light industry, automobile, household electrical appliances, electronics, farming, animal husbandry and fishery, commodity packaging.In recent years, the industries such as China's building, household electrical appliances are very fast to galvanized sheet demand growth, market potential is larger, especially in recent years along with building developing rapidly of lightweight construction, the increase year by year of car output, a large amount of outlets of extensively universal, joint, Sole Proprietorship's electronic product of household electrical appliance, make the consumption of galvanized sheet increase very fast.By the mode of production, divide, galvanized sheet is divided into heat zinc coating plate and electrolytic galvanized sheet.
Yet traditional galvanized sheet zinc coating in complex deformation process easily ftractures, be mainly can not reach unanimity due to the mechanical deformation performance of zinc coating and the mechanical deformation performance of substrate, and sheet material grain fineness number homogeneity is poor.
Summary of the invention
The technical problem that the present invention mainly solves is to provide galvanized sheet and the preparation technology thereof that a kind of mechanical deformation performance is consistent, improved the mechanical deformation performance of zinc coating, the mechanical deformation performance of zinc coating and the mechanical deformation performance of substrate are reached unanimity, improve sheet material complex deformation performance; Promote annealing heating speed, strengthen the consistence of sheet material crystal grain, promote sheet material complex deformation coefficient.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: provide a kind of mechanical deformation performance consistent galvanized sheet, it is comprised of steel substrate and the surperficial zinc coating being coated with after treatment, and the elongation of described galvanized sheet is 36 ~ 45%.
For solving the problems of the technologies described above, another technical solution used in the present invention is: the preparation technology of the galvanized sheet that a kind of mechanical deformation performance is consistent is provided, comprises the following steps:
(1) steel substrate pre-treatment: steel substrate is carried out cold rolling, cold rolling draft >=50% is processed;
(2) preparation of galvanizing flux: in galvanizing flux, chemical component weight per distribution ratio is aluminium 0.35 ~ 0.9%, antimony≤0.175%, surplus is zinc;
(3) annealing: annealing temperature is controlled at 780 ~ 800 ℃, and temperature rise rate is 50 ~ 80 ℃/s, and controls grain fineness number;
(4) pot galvanize: carry out pot galvanize after annealing, 460 ℃ of zinc-plated temperature, 460 ~ 480 ℃ of steel substrate face preheating temperatures.
In a preferred embodiment of the present invention, in step (3), grain fineness number is controlled 6～7 grades.
In a preferred embodiment of the present invention, in step (4), steel substrate heating naked light section temperature is 1000 ~ 1050 ℃.
In a preferred embodiment of the present invention, the air-fuel ratio of described naked light section is enter=0.85-0.9.
The invention has the beneficial effects as follows:
1, the present invention has improved the mechanical deformation performance of zinc coating, and the mechanical deformation performance of zinc coating and the mechanical deformation performance of substrate are reached unanimity, and improves sheet material complex deformation performance.
2, the present invention promotes annealing heating speed, strengthens the consistence of sheet material crystal grain, promotes sheet material complex deformation coefficient.
Embodiment
Below the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only a part of embodiment of the present invention, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making all other embodiment that obtain under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1
The galvanized sheet that mechanical deformation performance is consistent, it is comprised of steel substrate and the surperficial zinc coating being coated with after treatment, and the elongation of described galvanized sheet is 40%.
The preparation technology of the galvanized sheet that this mechanical deformation performance is consistent, specifically comprises the following steps:
(1) steel substrate pre-treatment: steel substrate is carried out cold rolling, cold rolling draft >=50% is processed;
(2) preparation of galvanizing flux: in galvanizing flux, chemical component weight per distribution ratio is aluminium 0.5%, antimony 0.11%, surplus is zinc;
(3) annealing: annealing temperature is controlled at 780 ℃, and temperature rise rate is 50 ℃/s, and controls grain fineness number, grain fineness number is controlled 6～7 grades;
(4) pot galvanize: after annealing, carry out pot galvanize, 460 ℃ of zinc-plated temperature, 470 ℃ of steel substrate face preheating temperatures, steel substrate heating naked light section temperature is 1000 ℃, the air-fuel ratio of described naked light section for entering=0.85.
Embodiment 2
The galvanized sheet that mechanical deformation performance is consistent, it is comprised of steel substrate and the surperficial zinc coating being coated with after treatment, and the elongation of described galvanized sheet is 36%.
The preparation technology of the galvanized sheet that this mechanical deformation performance is consistent, specifically comprises the following steps:
(1) steel substrate pre-treatment: steel substrate is carried out cold rolling, cold rolling draft >=50% is processed;
(2) preparation of galvanizing flux: in galvanizing flux, chemical component weight per distribution ratio is aluminium 0.9%, antimony 0.07%, surplus is zinc;
(3) annealing: annealing temperature is controlled at 800 ℃, and temperature rise rate is 70 ℃/s, and controls grain fineness number, grain fineness number is controlled 6～7 grades;
(4) pot galvanize: after annealing, carry out pot galvanize, 460 ℃ of zinc-plated temperature, 460 ℃ of steel substrate face preheating temperatures, steel substrate heating naked light section temperature is 1050 ℃, the air-fuel ratio of described naked light section for entering=0.9.
Embodiment 3
The galvanized sheet that mechanical deformation performance is consistent, it is comprised of steel substrate and the surperficial zinc coating being coated with after treatment, and the elongation of described galvanized sheet is 45%.
The preparation technology of the galvanized sheet that this mechanical deformation performance is consistent, specifically comprises the following steps:
(1) steel substrate pre-treatment: steel substrate is carried out cold rolling, cold rolling draft >=50% is processed;
(2) preparation of galvanizing flux: in galvanizing flux, chemical component weight per distribution ratio is aluminium 0.35%, antimony 0.175%, surplus is zinc;
(3) annealing: annealing temperature is controlled at 790 ℃, and temperature rise rate is 80 ℃/s, and controls grain fineness number, grain fineness number is controlled 6～7 grades;
(4) pot galvanize: after annealing, carry out pot galvanize, 460 ℃ of zinc-plated temperature, 480 ℃ of steel substrate face preheating temperatures, steel substrate heating naked light section temperature is 1050 ℃, the air-fuel ratio of described naked light section for entering=0.85.
The galvanized sheet that mechanical deformation performance of the present invention is consistent and preparation technology's beneficial effect thereof are: the present invention has improved the mechanical deformation performance of zinc coating, the mechanical deformation performance of zinc coating and the mechanical deformation performance of substrate are reached unanimity, improve sheet material complex deformation performance; The present invention promotes annealing heating speed, strengthens the consistence of sheet material crystal grain, promotes sheet material complex deformation coefficient.
The foregoing is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes description of the present invention to do; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present invention.
Claims (5)
1. the galvanized sheet that mechanical deformation performance is consistent, is characterized in that, it is comprised of steel substrate and the surperficial zinc coating being coated with after treatment, and the elongation of described galvanized sheet is 36 ~ 45%.
2. the preparation technology of the galvanized sheet that mechanical deformation performance according to claim 1 is consistent, is characterized in that, comprises the following steps:
(1) steel substrate pre-treatment: steel substrate is carried out cold rolling, cold rolling draft >=50% is processed;
(2) preparation of galvanizing flux: in galvanizing flux, chemical component weight per distribution ratio is aluminium 0.35 ~ 0.9%, antimony≤0.175%, surplus is zinc;
(3) annealing: annealing temperature is controlled at 780 ~ 800 ℃, and temperature rise rate is 50 ~ 80 ℃/s, and controls grain fineness number;
(4) pot galvanize: carry out pot galvanize after annealing, 460 ℃ of zinc-plated temperature, 460 ~ 480 ℃ of steel substrate face preheating temperatures.
3. preparation technology according to claim 2, is characterized in that, in step (3), grain fineness number is controlled 6～7 grades.
4. preparation technology according to claim 2, is characterized in that, in step (4), steel substrate heating naked light section temperature is 1000 ~ 1050 ℃.
5. preparation technology according to claim 4, is characterized in that, the air-fuel ratio of described naked light section is enter=0.85-0.9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410469400.7A CN104213062A (en) | 2014-09-16 | 2014-09-16 | Galvanized plate with consistent mechanical deformation performance and preparation process thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410469400.7A CN104213062A (en) | 2014-09-16 | 2014-09-16 | Galvanized plate with consistent mechanical deformation performance and preparation process thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111485188A (en) * | 2020-04-02 | 2020-08-04 | 鞍钢股份有限公司 | Method for improving surface platability of high-strength steel plate by adopting pre-oxidation technology |
| CN112074616A (en) * | 2018-02-08 | 2020-12-11 | 塔塔钢铁艾默伊登有限责任公司 | Method for forming articles from zinc or zinc alloy coated steel blanks |
-
2014
- 2014-09-16 CN CN201410469400.7A patent/CN104213062A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112074616A (en) * | 2018-02-08 | 2020-12-11 | 塔塔钢铁艾默伊登有限责任公司 | Method for forming articles from zinc or zinc alloy coated steel blanks |
| CN111485188A (en) * | 2020-04-02 | 2020-08-04 | 鞍钢股份有限公司 | Method for improving surface platability of high-strength steel plate by adopting pre-oxidation technology |
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Application publication date: 20141217 |