CN106916998A - A kind of super anticorrosive zinc base alloy layer steel band and its production method - Google Patents
A kind of super anticorrosive zinc base alloy layer steel band and its production method Download PDFInfo
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- CN106916998A CN106916998A CN201710264596.XA CN201710264596A CN106916998A CN 106916998 A CN106916998 A CN 106916998A CN 201710264596 A CN201710264596 A CN 201710264596A CN 106916998 A CN106916998 A CN 106916998A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C18/00—Alloys based on zinc
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C18/00—Alloys based on zinc
- C22C18/04—Alloys based on zinc with aluminium as the next major constituent
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Coating With Molten Metal (AREA)
Abstract
The invention belongs to steel plate strip material production field, disclose a kind of steps such as cooling → finishing/straightening → passivation → drying → Electrostatic greasing after zinc-containing alloy coated steel strips and its production method, including cold-rolled strip or hot rolling acid-cleaning steel band → degreasing → annealing → hot-dip → plating → test package storage.By the regulation to steel band composition and the control to production technology and process, production obtains the super anticorrosive zinc base alloy layer steel band of more than 10 times higher than common galvanized sheet of corrosion resistance, and the preparation method of composite of the invention is simple, coating and base material reach good combination.
Description
Technical field
The invention belongs to chemical field, steel plate strip material production field is particularly belonged to, it is related to a kind of zinc-containing alloy to plate
Layer steel band, belongs to medical instruments field, more particularly to a kind of super anticorrosive zinc base alloy layer steel band and its production method.
Background technology
Galvanized steel plain sheet is the welding steel that there are hot-dip or electro-galvanized layer in a class surface, after steel surface carries out galvanizing,
Play anodic protection effect to base steel in corrosive atmosphere due to zinc, and the good film of corrosion resistance, plating are formed on surface
Steel after zinc, greatly extend service life.The good corrosion resistance of hot-dip galvanizing sheet steel and processability make its extensive use
In vessel fabrication industry, electrical and machinery industry etc., particularly it is widely applied in fields such as automobile, household electrical appliances, buildings.
With the rapid hair of national new energy, the plantation of modernization integrated culture and modern city underground pipe gallery industry
Open up, corrosion resistance, processing of the field such as long-life cable testing bridge and its support, photovoltaic bracket and building lightweight steel construction to raw material
Property and presentation quality propose tightened up requirement higher, and the corrosion resistance of traditional galvanized steel plain sheet is directly proportional to thickness of coating, but
Improving the corrosion resistance of galvanized steel plain sheet by thickness of coating is increased will significantly reduce surface of steel plate presentation quality and consume more
Zinc resource, therefore on the premise of thickness of coating is not dramatically increased, coating is improved by adjusting zinc-containing alloy chemical composition
Steel plate corrosion resistance has become current study hotspot.Research shows：Adding trace alloying element in hot-dip galvanized alloy can
To effectively improve the corrosion resistance of coating, the ratio hot dip of zn-fe alloy coating, aluminium-zinc coating and zinc-aluminium coating grade is pure over nearest more than 20 years
The clad steel sheet that zinc steel plate has more high corrosion-resistant has been realized in industrialized production and is used widely.But these zinc-bases
Clad steel sheet is restricted because it is in the deficiency of the aspects such as corrosion resistance, formability and coating using scope.Into this century
Since, numerous steel mills and scientific research institution's research find that individually addition or compound addition Al, Mg, Ti etc. are micro- in hot dip zinc-containing alloy
After amount alloying element, the corrosion resistance of zinc-containing alloy clad steel sheet is greatly improved.Such as Chinese patent application CN105793468A is public
Opened the galvanized steel plain sheet of a kind of anti-blackening and excellent corrosion resistance, be formed with its steel plate Zn-Al-Mg-Si alloy layers and
The overlay film comprising Al on above-mentioned coating is formed at, but its preparation method is complicated, it is general to its cost and application in practical application
And scope all has and has certain limitations.
Thus, the corrosion resistance of steel band or steel plate how is improved, while ensure that the processing of production method is simple, with low cost,
It is urgent problem of the present invention so as to control its production method to be beneficial to industrial applications.
The content of the invention
Zinc-containing alloy coated steel strips corrosion resistance is low, production method is unfavorable for asking for industrial applications in order to solve for the present invention
Topic, there is provided a kind of super anticorrosive zinc base alloy layer steel band and its production method, and in particular to the selection of the material of coating and
The research of production method.
In order to solve the above technical problems, the invention provides a kind of super anticorrosive zinc base alloy layer steel band, its Ingredients Weight
Percentage is：Al 1-15%, Mg 0.5-3.5%, Ti 0.01-0.07%, RE 0.03-0.2%, remaining is Zn and can not keep away
The trace element exempted from.
Preferably, the super anticorrosive zinc base alloy layer steel band percentage is：Al 10 ± 1Wt%, Mg 2.7 ±
0.04~0.09Wt% of 0.5Wt%, Ti 0.02~0.04Wt%, RE；Remaining is zinc and inevitable trace element.
Present invention also offers a kind of production method of super anticorrosive zinc base alloy layer steel band, comprise the following steps：It is cold rolling
Cooling, finishing/straightening, passivation, drying, Electrostatic greasing, inspection after steel band or hot rolling acid-cleaning steel band, degreasing, annealing, hot-dip, plating
Test packaging and storage.
Preferably, the production method of the super anticorrosive zinc base alloy layer steel band, the annealing process is as follows：Cold-rolled strip
620 ± 150 DEG C of annealing temperature, 12 ± 5 DEG C/s of steel band heating rate, soaking soaking time is 45 ± 15s, annealing section protective atmosphere
It is 5 ± 2%H2- 93 ± 5%N2, dew point is -30 ± 5 DEG C.
Preferably, the production method of the super anticorrosive zinc base alloy layer steel band, the or immersion is as follows：Zinc liquid is closed
Golden typical composition is 0.04~0.09Wt% of Al 10 ± 1Wt%, Mg 2.7 ± 0.5Wt%, Ti 0.02~0.04Wt%, RE；
Remaining is zinc and inevitable trace element；470 ± 35 DEG C of zinc liquid temperature in zinc pot, steel band enters 480 ± 30 DEG C of zinc pot temperature,
3 ± 2s of hot-dip time.
Preferably, the production method of the super anticorrosive zinc base alloy layer steel band, after the plating cooling velocity be 9-25 DEG C/
s。
Wherein, strip anneal stage one side will ensure the microscopic structure of steel strip substrate to obtain preferable mechanical property
Can, on the other hand to ensure that steel band enters zinc pot with uniform suitable temperature, it is to avoid the thermal energy balance in zinc pot occurs violent
Change causes zinc pot temperature to fluctuate, therefore the annealing temperature of steel band, soaking time and to enter zinc pot temperature particularly significant.
It is the key operation stage for determining quality of coating that steel band hot dipping is crossed, and after substrate enters zinc pot, can be sent out with zinc liquid
Raw reaction, forms the alloy-layer of coating, directly determines tack, corrosion resistance and its surface quality situation of coating, this stage master
Wanting influence factor has the zinc liquid temperature in zinc pot, hot dipping to cross time and liquid zinc of zinc pot composition.
Cooling stage is cold rolling or hot rolling acid-cleaning steel plate zinc liquid for taking out of from zinc pot solidifies to form solid-state after the plating of steel band
The process of coating, the factor of this effect stepwise coating microstructure state has coating to begin to cool down temperature and cooldown rate, to ensure plating
Layer forms fine and close Zn/Al/MgZn2Ternary eutectic tissue, cooling velocity have to be larger than 9 DEG C/s after plating.
The present invention researchs and analyses the method being combined with theoretical calculation by documents and materials, by laboratory one chip hot dipping
Plating analog machine, by test of many times, successfully prepares Zn-Al-Mg-Ti-RE Zinc-based multi-element alloy clad steel sheet samples, passes through
Inspection and analysis and research to test specimen, determine first coating alloy composition for (1~15%Al)-(0.5~
The super anticorrosive zinc base alloy layer steel band and its production skill of 3.5%Mg)-(0.01~0.07%Ti)-(0.03~0.2RE)-Zn
Art.It is cold-rolled strip or hot rolling acid-cleaning steel band that the present invention provides substrate, by add in coating alloy appropriate Mg elements with
And trace Ti element, magnesium elements and titanium elements are promoted in the enrichment of coating surface and form one layer of fine and close passivating film of stabilization,
Effectively increase the corrosion resistance of steel band coating；Micro RE elements are added with appropriate Al element phase interworkings by coating
Close, using rational or immersion, refined coating microscopic structure, improve the bond strength of coating and steel matrix, change
It has been apt to adherence of coating and processing characteristics.
The present inventor, by above-mentioned technique and process control technology, can obtain preferably plating by the discovery that studies for a long period of time
Layer microscopic structure, and ensure mechanical property, adherence of coating, processability and the corrosion resistance of steel band, you can corrosion resistance is obtained than general
The super anticorrosive zinc base alloy layer steel band of logical more than 10 times high of galvanized sheet.Meanwhile, production method of the present invention is simple, with low cost,
Production method is easily controllable and is conducive to industrial applications.
Specific embodiment
The present invention is described in further detail below with reference to embodiment.
Embodiment 1-3
Embodiment 1-3 uses following process route：Cooled down after cold-rolled low carbon steel band → degreasing → annealing → hot-dip → plating
→ finishing/straightening → passivation → drying → Electrostatic greasing → test package storage.
Wherein cold-rolled low carbon steel band annealing temperature is 720 DEG C, 10 DEG C/s of annealing section heating rate, and soaking soaking time is
50s；Annealing section protective atmosphere is 5%H2- 95%N2, dew point is -30 DEG C；470 DEG C of liquid zinc of zinc pot temperature, steel band enters zinc pot temperature
480 DEG C, 5 ± 1s of steel band hot-dip time, 17 DEG C/s of cooling velocity after steel band plating.
Embodiment 4
Embodiment 4 uses following process route：It is cold after the smooth steel band → degreasing → annealing → hot-dip → plating of hot rolling acid-cleaning
But → finishing/straightening → passivation → drying → Electrostatic greasing → test package storage.
Wherein the smooth steel band soaking temperature of hot rolling acid-cleaning is 550 DEG C, 10 DEG C/s of soaking zone heating rate, soaking soaking time
It is 50s；Annealing section protective atmosphere is 5%H2- 95%N2, dew point is -30 DEG C；490 DEG C of liquid zinc of zinc pot temperature, steel band enters zinc pot temperature
500 DEG C of degree, 4 ± 1s of steel band hot-dip time, 13 DEG C/s of cooling velocity after steel band plating.
Embodiment 5
Embodiment 5 uses following process route：Cooled down after cold-rolled low carbon steel band → degreasing → annealing → hot-dip → plating →
Finishing/straightening → passivation → drying → Electrostatic greasing → test package storage.
Wherein cold-rolled low carbon steel band annealing temperature is 650 DEG C, 8 DEG C/s of annealing section heating rate, and soaking soaking time is
50s；Annealing section protective atmosphere is 5%H2- 95%N2, dew point is -30 DEG C；450 DEG C of liquid zinc of zinc pot temperature, steel band enters zinc pot temperature
460 DEG C, 3 ± 1s of steel band hot-dip time, 23 DEG C/s of cooling velocity after steel band plating.
Embodiment 6
Embodiment 6 uses following process route：Cooled down after cold-rolled low carbon steel band → degreasing → annealing → hot-dip → plating →
Finishing/straightening → passivation → drying → Electrostatic greasing → test package storage.
Wherein cold-rolled low carbon steel band annealing temperature is 680 DEG C, 13 DEG C/s of annealing section heating rate, and soaking soaking time is
40s；Annealing section protective atmosphere is 5%H2- 95%N2, dew point is -30 DEG C；470 DEG C of liquid zinc of zinc pot temperature, steel band enters zinc pot temperature
480 DEG C, 3 ± 1s of steel band hot-dip time, 12 DEG C/s of cooling velocity after steel band plating.
Embodiment 7
Embodiment 7 uses following process route：Cooled down after cold-rolled low carbon steel band → degreasing → annealing → hot-dip → plating →
Finishing/straightening → passivation → drying → Electrostatic greasing → test package storage.
Wherein cold-rolled low carbon steel band annealing temperature is 700 DEG C, 9 DEG C/s of annealing section heating rate, and soaking soaking time is
55s；Annealing section protective atmosphere is 5%H2- 95%N2, dew point is -30 DEG C；470 DEG C of liquid zinc of zinc pot temperature, steel band enters zinc pot temperature
480 DEG C, 4 ± 1s of steel band hot-dip time, 19 DEG C/s of cooling velocity after steel band plating.
Super anticorrosive zinc base alloy layer steel band corrosion resistance to experiment production is tested detection, using acceleration salt air corrosion
Method occur the length of red rust time to coating surface to evaluate the quality of its corrosion resisting property, salt spray test is according to GB/T
The requirement of 10125-2012 standards is carried out, and quality of coating and coating the actual measurement chemical composition of steel band are detected by chemical titration,
It the results are shown in Table 1.
There is the time of 5% red rust when table 1, coating salt fog plane corrosion test
As seen from the results in Table 1, the time for 5% red rust occur during the plane corrosion test of present invention difference coating sample is compared
It is obviously prolonged in common galvanized steel plain sheet.The corrosion resistance of super anticorrosive zinc base alloy layer steel band sample of the invention reaches identical coating
About 12-13 times of the common galvanized steel plain sheet of thickness.
The corrosion resistance of the super anticorrosive zinc base alloy layer steel band of the experiment explanation present invention is good above, and preparation method is easily controlled
System, it is adaptable to industrialized production.
The preferred embodiments of the disclosure and embodiment are explained in detail above, but the present invention is not limited to
The above-described embodiment and examples, in the ken that those skilled in the art possess, can also not depart from the present invention
Various changes can be made on the premise of design.
Claims (6)
1. a kind of super anticorrosive zinc base alloy layer steel band, it is characterised in that composition by weight percent is：Al 1-15%, Mg
0.5-3.5%, Ti 0.01-0.07%, RE 0.03-0.2%, remaining is Zn and inevitable trace element.
2. super anticorrosive zinc base alloy layer steel band according to claim 1, percentage is：Al 10 ± 1Wt%, Mg 2.7
0.04~0.09Wt% of ± 0.5Wt%, Ti 0.02~0.04Wt%, RE；Remaining is zinc and inevitable trace element.
3. the production method of super anticorrosive zinc base alloy layer steel band according to claim 1, comprises the following steps：Cold-rolled steel
Cooling, finishing/straightening, passivation, drying, Electrostatic greasing, inspection after band or hot rolling acid-cleaning steel band, degreasing, annealing, hot-dip, plating
Packaging and storage.
4. the production method of super anticorrosive zinc base alloy layer steel band according to claim 3, the annealing process is as follows：It is cold
620 ± 150 DEG C of strip rolling annealing temperature, 12 ± 5 DEG C/s of steel band heating rate, soaking soaking time is 45 ± 15s, and annealing section is protected
Shield atmosphere is 5 ± 2%H2-93 ± 5%N2, and dew point is -30 ± 5 DEG C.
5. the production method of the super anticorrosive zinc base alloy layer steel band according to claim any one of 3-4, the hot-dip
Technique is as follows：Zinc liquid alloy typical composition is Al 10 ± 1Wt%, Mg 2.7 ± 0.5Wt%, Ti 0.02~0.04Wt%, RE
0.04~0.09Wt%；Remaining is zinc and inevitable trace element；470 ± 35 DEG C of zinc liquid temperature in zinc pot, steel band enters zinc
480 ± 30 DEG C of pot temperature, 3 ± 2s of hot-dip time.
6. the production method of the super anticorrosive zinc base alloy layer steel band according to claim any one of 3-5, cold after the plating
But speed is 9-25 DEG C/s.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108411201A (en) * | 2018-04-03 | 2018-08-17 | 新兴铸管股份有限公司 | A kind of steel belt for packages and its production method of excellent corrosion resistance |
| CN108754382A (en) * | 2018-07-31 | 2018-11-06 | 江苏大力神科技股份有限公司 | A kind of continuous producing method of steel band plating magnalium zinc chrome |
| CN109023200A (en) * | 2018-09-06 | 2018-12-18 | 山东省博兴县云光钢铁有限公司 | A kind of preparation method of ultra-thin galvanized sheet |
| CN111270182A (en) * | 2020-03-20 | 2020-06-12 | 攀钢集团攀枝花钢铁研究院有限公司 | Hot-dip Zn-Al-Mg alloy coated steel plate and preparation method thereof |
| CN111575626A (en) * | 2020-06-08 | 2020-08-25 | 首钢集团有限公司 | Hot-dip galvanized hot-rolled steel and preparation method thereof |
| CN111961997A (en) * | 2020-08-05 | 2020-11-20 | 江门市新会亿利增立金属制品有限公司 | Production process of hot-dip galvanized plate for high-strength structure |
| CN112011752A (en) * | 2020-08-20 | 2020-12-01 | 马鞍山钢铁股份有限公司 | High-corrosion-resistance hot-formed steel part and manufacturing method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108411201A (en) * | 2018-04-03 | 2018-08-17 | 新兴铸管股份有限公司 | A kind of steel belt for packages and its production method of excellent corrosion resistance |
| CN108754382A (en) * | 2018-07-31 | 2018-11-06 | 江苏大力神科技股份有限公司 | A kind of continuous producing method of steel band plating magnalium zinc chrome |
| CN109023200A (en) * | 2018-09-06 | 2018-12-18 | 山东省博兴县云光钢铁有限公司 | A kind of preparation method of ultra-thin galvanized sheet |
| CN111270182A (en) * | 2020-03-20 | 2020-06-12 | 攀钢集团攀枝花钢铁研究院有限公司 | Hot-dip Zn-Al-Mg alloy coated steel plate and preparation method thereof |
| CN111575626A (en) * | 2020-06-08 | 2020-08-25 | 首钢集团有限公司 | Hot-dip galvanized hot-rolled steel and preparation method thereof |
| CN111961997A (en) * | 2020-08-05 | 2020-11-20 | 江门市新会亿利增立金属制品有限公司 | Production process of hot-dip galvanized plate for high-strength structure |
| CN112011752A (en) * | 2020-08-20 | 2020-12-01 | 马鞍山钢铁股份有限公司 | High-corrosion-resistance hot-formed steel part and manufacturing method thereof |
| CN112011752B (en) * | 2020-08-20 | 2022-06-21 | 马鞍山钢铁股份有限公司 | High-corrosion-resistance hot-formed steel part and manufacturing method thereof |
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