CN101255540A - Method for producing alloyed hot-dipping galvanized steel sheet - Google Patents
Method for producing alloyed hot-dipping galvanized steel sheet Download PDFInfo
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- CN101255540A CN101255540A CNA2008100185290A CN200810018529A CN101255540A CN 101255540 A CN101255540 A CN 101255540A CN A2008100185290 A CNA2008100185290 A CN A2008100185290A CN 200810018529 A CN200810018529 A CN 200810018529A CN 101255540 A CN101255540 A CN 101255540A
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Abstract
The present invention discloses a production method for an alloyed hot-dip galvanizing steel plate, comprising the processes of strip steel producing, strip steel galvanizing, alloying, leveling and passivating, wherein in the strip steel galvanizing process, the temperature of strip steel entering a galvanized pot is 450 to 470 DEG C, and the temperature of zinc liquid is 455 to 465 DEG C. Compared with current technology, the method can produce a steel plant which not only has good welding property and coating property of a traditional alloyed hot-dip galvanizing steel plate, but also has superior corrosion-resistant property, black -patina-resistant property, conductivity and environment protecting property, and is particularly suitable for manufacturing kinescopes.
Description
Technical field
The present invention relates to a kind of production method of alloyed hot-dip galvanized steel plate, particularly be used for the production method of the environmental protection zinc-iron alloy hot-dip galvanized steel sheet of kinescope.
Background technology
The production method of hot-dip galvanized steel sheet successively lives through early stage Sendzimir technology, modified form Sendzimir technology join method technology to U.S. steel evolution process.Influenced by production technique, the product that modified form Sendzimir technology is produced is its surface quality (comprising the zinc floral structure) or fertile steel grade scope no matter, all is difficult to reach the requirement of alloying steel plate; The aftertreatment section of Sendzimir technology generally all reckons without production environmental protection alloyed hot-dip galvanized steel plate when design in addition, and therefore the equipment of processing section configuration thereafter can not be satisfied the needs of production environmental protection alloyed hot-dip galvanized steel plate.
Along with U.S. steel connection method maturation, the precision roll coater by online polishing machine and aftertreatment section (comprise roller coating machine after drying and cooling apparatus) coupling makes up.The surface quality of hot-dip galvanized steel sheet is significantly improved, and plate shape is improved, and zinc layer bonding force is enhanced, and fertile steel grade also increases greatly.
In the production process of kinescope, because processing conditions needs, the hot dip galvanizing plate of its use needs good welding property, and steel plate needs certain oilness to reduce friction to the damage of surface of steel plate in transportation and punching course in addition.Researched and developed alloyed hot-dip zinc-coated plate for satisfying the more domestic iron and steel enterprises of these characteristics, the production method of alloyed hot-dip galvanized steel plate is hot-dip galvanizing sheet steel to be entered alloying furnace after zinc-plated again heat through about 500 ℃, make generation alloying reaction between surperficial pure zinc layer and the steel matrix and form the alloying coating that constitutes by the Fe-Zn compound, but the corrosion resisting property of alloyed hot-dip galvanized steel sheet, the energy of anti-the blackening, conductivity is relatively poor, and coating is easy to generate efflorescence and peels off when punching press is out of shape, zinc coating is destroyed easily, not only worsen corrosion resisting property, and cause surface imperfection easily, influence the outward appearance after the application.Chinese patent: 02801081.7 has introduced a kind of production method of alloyed hot-dip galvanized steel sheet, but there is solidity to corrosion in the steel plate of its production, anti-blackening, the shortcoming that lubricity etc. are relatively poor, since European Union on January 27th, 2003 formally announced " scrap electronic and electrical equipment instruction " (WEEE-2002/96/EC) and " banning use of some objectionable impurities instruction in about big electronic electric equipment " (RoHS-2002/95/EC), command request was forbidden selling in European Union market and is contained Hg on July 1st, 2006, Cd, Cr6+, Pb, PPBs, the electronic electric equipment of objectionable impuritiess such as PBDEs.But general zinc-iron alloy product uses not passivation or sexavalent chrome passivation usually, has a strong impact on its use properties and environmental requirement
Summary of the invention
Technical problem to be solved by this invention provides production method a kind of environmental protection, alloyed hot-dip galvanized steel plate.
The technical scheme of technical solution problem of the present invention is: a kind of production method of alloyed hot-dip galvanized steel plate comprises band steel production process, strip steel Zn-plating operation, alloying step, smooth operation, passivation procedure:
Described strip steel Zn-plating operation is: it is 450～470 ℃ that the band steel is gone into zinc pot temperature, and zinc liquid temperature is 455～465 ℃; Zinc liquid contains following material and quality percentage part:
Al 0.11～0.14％
Pb ≤0.003％
Fe 0.03-0.07％
All the other impurity contents≤0.003%.
In the described zinc coating, the δ 1 of iron is FeZn mutually
7-10, the Γ at δ 1/ steel matrix interface is Fe mutually
3Zn
10
Described alloying step is: the alloying furnace temperature is controlled at 450-550 ℃, and alloying time is controlled at 10～15s;
Described smooth operation is: the band steel after the alloying is cooled to less than 40 ℃, sends the polishing machine to, and making the roughness of band steel after the alloying is Ra0.5～1.2 μ m, and unit elongation is 0.5%-1.5%;
Band steel refrigerative temperature after the control alloying and unit elongation can be eliminated the base plate strip Yield Of Steel and extend, and prevent to produce the slip line defective at belt steel surface when client's punch process.
Described passivation procedure is: use organosilane resin type passivator, its model is CET-378PM, thickness
0.5～2.0 (g/m2), linear velocity 50-150 (m/min), coating
Roller is 130-70% with the rotating ratio of getting material roller, oven temperature: 90-250 ℃, and PMT 100-120 ℃, rolling temperature≤40 ℃.
The alloyed hot-dip zine plate that the present invention produced, its performance is as follows:
Interlayer opposing: 1.58～2.32 Ω cm2;
The Δ of anti-blackening E:1.13～2.25;
Solidity to corrosion (SST72hr): 0～5%;
Coating (test of hundred lattice) 98/98.
The present invention compared with prior art not only possesses the good welding property and the coating performance of conventional alloys hot-dip galvanized steel sheet, and possesses excellent corrosion resistant performance, the energy of anti-blackening the, conduction, environmental-protecting performance, is particularly suitable for the manufacturing of picture tube.
Embodiment
Below in conjunction with embodiment the present invention is done detailed explanation.
Embodiment 1:
A kind of production method of alloyed hot-dip galvanized steel plate comprises band steel production process, strip steel Zn-plating operation, alloying step, smooth operation, passivation procedure:
Described strip steel Zn-plating operation is: it is 470 ℃ that the band steel is gone into zinc pot temperature, and zinc liquid temperature is 460 ℃; Zinc liquid contains following material and quality percentage part: Al:0.14%, Pb≤0.003%, Fe:0.05%, and all the other elements≤0.003%, in the described zinc coating, the δ 1 of iron is FeZn mutually
8, the Γ 1 at δ 1/ steel matrix interface is Fe mutually
3Zn
10
Described alloying step is: the alloying furnace temperature is controlled at 490 ℃, and alloying time is controlled at 10～15s;
Described smooth operation is: the band steel after the alloying is cooled to below 40 ℃, sends the polishing machine to, and making the roughness of band steel after the alloying is Ra0.8 μ m, and unit elongation is 0.9%;
Described passivation procedure is: use organosilane resin type passivator, its model is CET-378PM, thickness 1.0 (g/m2), linear velocity 90 (m/min), application roll is 120% with the rotating ratio of getting material roller, oven temperature: 190 ℃, PMT100 ℃, rolling temperature≤40 ℃.
Embodiment 2:
A kind of production method of alloyed hot-dip galvanized steel plate comprises band steel production process, strip steel Zn-plating operation, alloying step, smooth operation, passivation procedure:
Described strip steel Zn-plating operation is: it is 465 ℃ that the band steel is gone into zinc pot temperature, and zinc liquid temperature is 455 ℃; Zinc liquid contains following material and quality percentage part: Al:0.13%, Pb≤0.003%, Fe:0.04%, and all the other impurity elements≤0.003%, in the described zinc coating, the δ 1 of iron is FeZn mutually
9, the Γ 1 at δ 1/ steel matrix interface is Fe mutually
3Zn
10
Described alloying step is: the alloying furnace temperature is controlled at 500 ℃, and alloying time is controlled at 10～15s;
Described smooth operation is: the band steel after the alloying is cooled to below 40 ℃, sends the polishing machine to, and making the roughness of band steel after the alloying is Ra1.0 μ m, and unit elongation is 1.0%;
Described passivation procedure is: use organosilane resin type passivator, its model is CET-378PM, thickness 1.2 (g/m2), linear velocity 100 (m/min), application roll is 115% with the rotating ratio of getting material roller, oven temperature: 220 ℃, PMT110 ℃, rolling temperature≤40 ℃.
Embodiment 3:
A kind of production method of alloyed hot-dip galvanized steel plate comprises band steel production process, strip steel Zn-plating operation, alloying step, smooth operation, passivation procedure:
Described strip steel Zn-plating operation is: it is 465 ℃ that the band steel is gone into zinc pot temperature, and zinc liquid temperature is 455 ℃; Zinc liquid contains following material and quality percentage part: Al:0.12%, Pb≤0.003%, Fe:0.03%, and all the other impurity elements≤0.003%, in the described zinc coating, the δ 1 of iron is FeZn mutually
10, the Γ 1 at δ 1/ steel matrix interface is Fe mutually
3Zn
10
Described alloying step is: the alloying furnace temperature is controlled at 500 ℃, and alloying time is controlled at 10～15s;
Described smooth operation is: the band steel after the alloying is cooled to below 40 ℃, sends the polishing machine to, and making the roughness of band steel after the alloying is Ra0.8 μ m, and unit elongation is 1.0%;
Described passivation procedure is: use organosilane resin type passivator, its model is CET-378PM, thickness 1.0 (g/m2), linear velocity 120 (m/min), application roll is 130% with the rotating ratio of getting material roller, oven temperature: 230 ℃, PMT120 ℃, rolling temperature≤40 ℃.
Embodiment 4:
A kind of production method of alloyed hot-dip galvanized steel plate comprises band steel production process, strip steel Zn-plating operation, alloying step, smooth operation, passivation procedure:
Described strip steel Zn-plating operation is: it is 460 ℃ that the band steel is gone into zinc pot temperature, and zinc liquid temperature is 450 ℃; Zinc liquid contains following material and quality percentage part: Al:0.11%, Pb≤0.003%, Fe:0.03%, all the other≤0.003%, in the described zinc coating, the δ 1 of iron is FeZn mutually
10, the Γ 1 at δ 1/ steel matrix interface is Fe mutually
3Zn
10
Described alloying step is: the alloying furnace temperature is controlled at 500 ℃, and alloying time is controlled at 10～15s;
Described smooth operation is: the band steel after the alloying is cooled to below 40 ℃, sends the polishing machine to, and making the roughness of band steel after the alloying is Ra1.2 μ m, and unit elongation is 0.8%;
Described passivation procedure is: use organosilane resin type passivator, its model is CET-378PM, thickness 1.5 (g/m2), linear velocity 130 (m/min), application roll is 130% with the rotating ratio of getting material roller, oven temperature: 230 ℃, PMT110 ℃, rolling temperature≤40 ℃.
Interlayer opposing of the present invention utilizes resistance measuring instrument to detect;
The Δ of anti-blackening E detects according to GB/T 13448-2005 standard;
Solidity to corrosion (SST72hr) detects according to GB/T 13448-2005 standard;
Coating (test of hundred lattice) detects according to GB GB/T 13448-2005 standard
The alloyed hot-dip zine plate that embodiment 1-4 produces, its performance is as shown in table 1:
Table 1:
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | |
| Interlayer opposing (Ω cm 2) | 1.62 | 1.87 | 1.76 | 2.01 |
| The Δ of anti-blackening E | 1.62 | 1.26 | 1.46 | 1.15 |
| Solidity to corrosion | 3％ | 1％ | 3％ | 0％ |
| Coating | 100/100 | 100/100 | 100/100 | 100/100 |
Claims (5)
1, a kind of production method of alloyed hot-dip galvanized steel plate comprises band steel production process, strip steel Zn-plating operation, alloying step, smooth operation, passivation procedure, it is characterized in that:
Described strip steel Zn-plating operation is: it is 450～470 ℃ that the band steel is gone into zinc pot temperature, and zinc liquid temperature is 455～465 ℃; Zinc liquid contains following material and quality percentage part:
Al 0.11～0.14％
Pb ≤0.003％
Fe 0.03-0.07％
Impurity content≤0.003%.
2, the production method of a kind of alloyed hot-dip galvanized steel plate according to claim 1 is characterized in that: in the described zinc coating, the δ 1 of iron is FeZn mutually
7-10, the Γ at δ 1/ steel matrix interface is Fe mutually
3Zn
10
3, the production method of a kind of alloyed hot-dip galvanized steel plate according to claim 1 is characterized in that: described alloying step is: the alloying furnace temperature is controlled at 450-550 ℃, and alloying time is controlled at 10～15s;
4, the production method of a kind of alloyed hot-dip galvanized steel plate according to claim 1, it is characterized in that: described smooth operation is: the band steel after the alloying is cooled to less than 40 ℃, send the polishing machine to, making the roughness of band steel after the alloying is Ra0.5～1.2 μ m, and unit elongation is 0.5%-1.5%;
5, the production method of a kind of alloyed hot-dip galvanized steel plate according to claim 1, it is characterized in that: described passivation procedure is: use organosilane resin type passivator, its model is CET-378PM, thickness 0.5～2.0 (g/m2), linear velocity 50-150 (m/min), application roll is 130-70% with the rotating ratio of getting material roller, oven temperature: 90-250 ℃, PMT 100-120 ℃, rolling temperature≤40 ℃.
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| CNA2008100185290A CN101255540A (en) | 2008-02-22 | 2008-02-22 | Method for producing alloyed hot-dipping galvanized steel sheet |
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| CNA2008100185290A CN101255540A (en) | 2008-02-22 | 2008-02-22 | Method for producing alloyed hot-dipping galvanized steel sheet |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102581007A (en) * | 2012-01-19 | 2012-07-18 | 武汉钢铁(集团)公司 | Method for producing steel for automotive outer plate with width of 2,000-2,070mm |
| CN102971444A (en) * | 2010-06-21 | 2013-03-13 | 新日铁住金株式会社 | Hot-dip Al-coated steel sheet with excellent thermal blackening resistance and process for production of same |
| CN105908200A (en) * | 2016-05-13 | 2016-08-31 | 武汉钢铁股份有限公司 | Method for manufacturing environment-friendly zinc-iron alloying sheet |
| CN110724947A (en) * | 2019-10-23 | 2020-01-24 | 首钢集团有限公司 | Method and device for preparing hot-dip galvanized sheet |
| CN110724896A (en) * | 2019-11-03 | 2020-01-24 | 江苏荣辉电力设备制造有限公司 | Galvanizing method for scattered components of iron tower |
| CN110743919A (en) * | 2019-10-11 | 2020-02-04 | 马鞍山钢铁股份有限公司 | Surface appearance control method of cold-rolled galvanized product |
| CN111455299A (en) * | 2020-05-11 | 2020-07-28 | 马鞍山钢铁股份有限公司 | Method for improving electrophoretic pinhole voltage of alloyed galvanized steel sheet |
-
2008
- 2008-02-22 CN CNA2008100185290A patent/CN101255540A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102971444A (en) * | 2010-06-21 | 2013-03-13 | 新日铁住金株式会社 | Hot-dip Al-coated steel sheet with excellent thermal blackening resistance and process for production of same |
| CN102971444B (en) * | 2010-06-21 | 2014-08-27 | 新日铁住金株式会社 | Hot-dip Al-coated steel sheet with excellent thermal blackening resistance and process for production of same |
| CN102581007A (en) * | 2012-01-19 | 2012-07-18 | 武汉钢铁(集团)公司 | Method for producing steel for automotive outer plate with width of 2,000-2,070mm |
| CN105908200A (en) * | 2016-05-13 | 2016-08-31 | 武汉钢铁股份有限公司 | Method for manufacturing environment-friendly zinc-iron alloying sheet |
| CN110743919A (en) * | 2019-10-11 | 2020-02-04 | 马鞍山钢铁股份有限公司 | Surface appearance control method of cold-rolled galvanized product |
| CN110724947A (en) * | 2019-10-23 | 2020-01-24 | 首钢集团有限公司 | Method and device for preparing hot-dip galvanized sheet |
| CN110724896A (en) * | 2019-11-03 | 2020-01-24 | 江苏荣辉电力设备制造有限公司 | Galvanizing method for scattered components of iron tower |
| CN111455299A (en) * | 2020-05-11 | 2020-07-28 | 马鞍山钢铁股份有限公司 | Method for improving electrophoretic pinhole voltage of alloyed galvanized steel sheet |
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Address after: 243003 8 Jiuhua Road, Yushan, Ma'anshan, Anhui Applicant after: Ma'anshan Iron and Steel Co., Ltd. Address before: 243003 technology center, Hunan West Road, Ma'anshan, Anhui, 8 Applicant before: Ma'anshan Iron and Steel Co., Ltd. |
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