CN100362123C - Galvanized steel sheet coating material and its production method - Google Patents
Galvanized steel sheet coating material and its production method Download PDFInfo
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- CN100362123C CN100362123C CNB2006100383860A CN200610038386A CN100362123C CN 100362123 C CN100362123 C CN 100362123C CN B2006100383860 A CNB2006100383860 A CN B2006100383860A CN 200610038386 A CN200610038386 A CN 200610038386A CN 100362123 C CN100362123 C CN 100362123C
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Abstract
The present invention relates to a galvanized steel plate coating material and a production method thereof, which relates to a metal material, particularly to a coating material used for a special galvanized steel plate. According to a scheme provided by the present invention, the coating material is mainly composed of components of the following proportion by weight: 50% to 60% of Al, 38% to 47% of Zn, 0.5% to 3% of Si and 0.05% to 0.3% of Re. The production method the coating material of a galvanized steel plate comprises the following steps: first, 50% to 60% of the Al is added in a smelting furnace, and the smelting furnace is heated up to 795 to 805 DEG C; then, 0.5% to 3% of the Si is added and is uniformly stirred; after the smelting furnace is heated up to 845 to 855 DEG C, 0.05 to 0.3% of the Re is added and is uniformly stirred; then, after the smelting furnace is heated up to 860 to 880 DEG C, 38 to 47% of the Zn is added, and after the Zn is uniformly stirred, the mixture is placed for 30 to 35 minutes. The corrosion resistant performance and the high temperature resistant performance of steel after galvanized with the coating material can be enhanced by the present invention. Thus, the service life of the steel can be prolonged and the surface quality of the steel can be improved.
Description
Technical field
The present invention relates to a kind of metallic substance, the coating material that specifically special steel plate galvanized is used.
Background technology
In the prior art, used galvanized sheet mainly is hot-dip galvanizing sheet steel or pot galvanize steel band, the coating material of this product is generally 100% metallic zinc Zn, metallic zinc Zn is as the effect that coating material is plated on steel surface: 1, improve the corrosion resistance of steel, prolong the work-ing life of steel.2, improve the resistance to elevated temperatures (300 ℃) of steel, and corrosive nature, to enlarge the use range of steel plate (band).3, the coating of coating material composition is not damaged under the condition of stretching and deformation processing, to improve the machining property of steel plate (band).4, the coating formed of coating material is bigger with the bonding force of basic steel, does not produce be full of cracks in crooked back coating repeatedly, the phenomenon of peeling, and can improve the anti-fatigue performance of steel plate (band) like this.5, the coatingsurface formed of coating material evenly, refinement, bright and clean, but the image appearance of steel plate (band) like this.
Owing in existing coating material tissue, lack aluminium (Al), silicon (Si), rare earth (Re) element, there are a certain distance in its performance and coated steel sheet (band) to the requirement of coating material, mainly show the following aspects: 1, owing to lack aluminium (Al), therefore its lasting corrosion resistance is general, about ten years work-ing life of steel plate behind the plating (band); And high temperature (300 ℃) corrosion resistance is relatively poor, about 5 years of the work-ing life of its steel plate (band).2, owing to lack silicon (Si) in coating material, the bonding force of coating material and basic material (steel) is lower, and the coating behind the plating easily produces fatigue and causes coating decortication, phenomenons such as be full of cracks.4, owing in coating material, lack rare earth (Re), silicon (Si), the machining property of coating is relatively poor, easily causes coating damage in deformation processing.5, lack rare earth (Re), plating performance refinement degree is general, uniformity coefficient, and smooth finish is general.
Summary of the invention
The object of the present invention is to provide a kind of steel plate galvanized and production method thereof,, prolong the work-ing life of steel, improve the surface quality of steel to improve the corrosion resistance and the resistance to elevated temperatures of steel behind the plating coating material.
According to the scheme that relates to provided by the present invention, this coating material is mainly by aluminium Al50%～60%, zinc Zn38%～47%, and silicon Si0.5%～3%, rare earth Re0.05%～0.3% is formed.
The production method of the coating material of this steel plate galvanized comprises: the aluminium of adding 50%～60% adds in the smelting furnace earlier, heat temperature raising to 795～805 ℃, add 0.5%～3% silicon again, stir, be warming up to again and add 0.05%～0.3% rare earth after 845～855 ℃, stir, reheat adds 38%～47% zinc after being warming up to 860 ℃～880 ℃, and the back that stirs is suitable put 30～35 minutes.
And then after carrying out refining and degasification, be incubated 760 ℃～780 ℃, pour into ingot casting again.When concise, the exsiccant scouring agent is placed in the smelting furnace, add-on is 1～1.5% of a molten metal weight, stirred gently 3～5 minutes, scouring agent is fully contacted with solution, so that capture oxide-based foreign material, because it is light to contain the solvent ratio alloy liquid of oxide inclusion, float on the surface, solvent is pulled down, left standstill 8～10 minutes, make the dispersion slag that remains in the alloy liquid gather emersion, concise end, scouring agent can adopt sodium aluminum fluoride, molecular formula: Na
3AlF
6, concise temperature is more than or equal to 760 ℃.During degasification, as carrier, add degasifier with nitrogen, the hydrogen in the alloy liquid is slowly emerged equably, during degasification, each corner of smelting furnace should all move into place, and removes the hydrogen in the alloy liquid as far as possible.Degasifier can adopt hexachloroethane, molecular formula: C2Cl6, furnace temperature should be more than or equal to 700 ℃ during degasification.
The effect of various compositions is as follows: 1, aluminium Al mainly by two effects greatly, a, improves persistent corrosion resistance.Corrosive nature and persistent corrosion resistance under b, raising high temperature (300 ℃) situation; 2, the effect of zinc Zn (38%～47%) is, a, good galvanic protection, improve the corrosion resistance under the normal temperature state at b; 3, the effect of silicon Si (0.5%～3%) is: the formation of a, inhibition iron Fe. aluminium Al. zinc Zn. frangible compounds.The liquid fluidity of b, enhancing alloy.4, the effect of rare earth is the crystallization crystal grain of refinement alloy, strengthens the wear resistance of alloy.
Quad alloy (aluminium-zinc-silicon-rare earth) material for plating is on the basis of original material (metallic zinc, content 100%), increases most of aluminium, and the rare earth of a spot of silicon and trace is made alloy through high melt.And the aluminium that increases, silicon, rare earth all have fairly obvious effect to the performance of improvement coated steel sheet (band), and is specific as follows: as 1, can effectively to increase the work-ing life of steel plate (band) behind the adding aluminium Al, generally can reach 20 years; And the work-ing life of the high temperature of the steel plate that is multiplied (band) (300 ℃), generally can reach 15 years.2, can effectively improve the anti-fatigue performance of steel plate (band) behind the adding silicon Si, the otch and the edge of protection steel plate (band).3, add the machining property that can promote steel plate (band) behind the rare earth RE, make the surface of steel plate refinement, evenly, clean, bright, beautiful appearance is generous.
Embodiment
The process of founding is to carry out under normal pressure.
Embodiment one
Prescription: aluminium Al50%, zinc Zn47%, silicon SI2.8%, rare earth Re0.2%.Add aluminium Al when feeding intake earlier, reheat is warming up to 800 ℃, adds silicon Si again, and stirs, add rare earth Re after being warming up to 850 ℃ again, stir, zincification Zn after reheat is warming up to 880 ℃, the back that stirs is suitable put 35 minutes, refining again, degasification is incubated 780 ℃, pours into ingot casting.The method of refining and degasification is same as described above again.
Embodiment two
Prescription: aluminium Al60%, zinc Zn38%, silicon Si1.9%, rare earth Re0.1%.Add aluminium Al when feeding intake earlier, reheat is warming up to 800 ℃, adds silicon Si again, and stirs, add rare earth Re after being warming up to 850 ℃ again, stir, zincification Zn after reheat is warming up to 860 ℃, the back that stirs is suitable put 30 minutes, refining again, degasification is incubated 760 ℃, pours into ingot casting.The method of refining and degasification is same as described above again.
Embodiment three,
Prescription: aluminium Al55.4%, zinc Zn44%, silicon Si0.5%, rare earth Re0.1%.Add aluminium Al when feeding intake earlier, reheat is warming up to 800 ℃, adds silicon Si again, and stirs, add rare earth Re after being warming up to 850 ℃ again, stir, zincification Zn after reheat is warming up to 860 ℃～880 ℃, the back that stirs is suitable put 30～35 minutes, refining again, degasification is incubated 760 ℃～780 ℃, pours into ingot casting.The method of refining and degasification is same as described above again.
Embodiment four
Prescription: aluminium Al54.8%, zinc Zn42%, silicon Si3%, rare earth Re0.2%.Add aluminium Al earlier, reheat is warming up to 800 ℃, adds silicon Si again, and stirs, add rare earth Re after being warming up to 850 ℃ again, stir, zincification Zn after reheat is warming up to 860 ℃～880 ℃, the back that stirs is suitable put 30～35 minutes, refining again, degasification is incubated 760 ℃～780 ℃, pours into ingot casting.The method of refining and degasification is same as described above again.
Embodiment five
Prescription: aluminium Al57.75%, zinc Zn41%, silicon Si1.2%, rare earth Re0.05% technology are with embodiment four.
Embodiment six
Prescription: aluminium Al55%, zinc Zn43%, silicon Si1.7%, rare earth Re0.3%, technology is with embodiment four.
Embodiment seven
Aluminium Al52%, zinc Zn46%, silicon Si1.8%, rare earth Re0.2%, technology is with embodiment four.
Embodiment eight
Aluminium Al56%, zinc Zn42%, silicon Si1.4%, rare earth Re0.1%, technology is with embodiment four.
The melting technology of the various embodiments described above is basic identical under the heterogeneity proportioning, and slightly different is temperature and suitable difference of putting the time, and its end properties is also basic identical.
Claims (6)
1. the coating material of a steel plate galvanized is characterized in that: this coating material is by aluminium Al50%～60%, zinc Zn38%～47%, and silicon Si0.5%～3% and rare earth Re form, and described rare earth Re content is greater than 0.2% and smaller or equal to 0.3%.
2. the production method of the coating material of a steel plate galvanized, it is characterized in that, reinforced: earlier with in 50%～60% the aluminium adding smelting furnace, heat temperature raising to 795～805 ℃ add 0.5%～3% silicon again, stir, be warming up to again and add 0.05%～0.3% rare earth after 845～855 ℃, stir, reheat adds 38%～47% zinc after being warming up to 860 ℃～880 ℃, and the back that stirs is suitable put 30～35 minutes.
3. as the production method of the coating material of steel plate galvanized as described in the claim 2, its feature also is: carry out refining again after adding material: the exsiccant refining agent is placed in the smelting furnace, add-on is 1～1.5% of an alloy liquid weight, stirred gently 3～5 minutes, refining agent is fully contacted with solution, so that capture the oxide compound foreign material, because it is lighter than alloy liquid to contain the refining agent of oxide inclusion, float on the surface, refining agent is pulled down, left standstill 8～10 minutes, make the dispersion slag that remains in the alloy liquid gather emersion, refining agent adopts sodium aluminum fluoride, molecular formula: Na
3AlF
6, refining temperature is more than or equal to 760 ℃.
4. as the production method of the coating material of steel plate galvanized as described in the claim 3, it is characterized in that degasification again after refining: as carrier, add degasifier with nitrogen, the hydrogen in the alloy liquid is slowly emerged equably, remove the hydrogen in the alloy liquid; Degasifier adopts hexachloroethane, molecular formula: C
2Cl
6, furnace temperature is more than or equal to 700 ℃ during degasification.
5. as the production method of the coating material of steel plate galvanized as described in the claim 4, it is characterized in that, after degasification, be incubated 760 ℃～780 ℃, pour into ingot casting then.
6. the coating material of a steel plate galvanized, this coating material is by aluminium Al 50%～60%, zinc Zn 38%～47%, silicon Si 0.5%～3%, rare earth Re 0.05%～0.3% forms, it is characterized in that: reinforced, earlier with in 50%～60% the aluminium adding smelting furnace, heat temperature raising to 795～805 ℃ add 0.5%～3% silicon again, stir, be warming up to again and add 0.05%～0.3% rare earth after 845～855 ℃, stir, reheat adds 38%～47% zinc after being warming up to 860 ℃～880 ℃, and the back that stirs is suitable put 30～35 minutes.
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| CNB2006100383860A CN100362123C (en) | 2006-02-16 | 2006-02-16 | Galvanized steel sheet coating material and its production method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101736257B (en) * | 2009-12-28 | 2011-11-23 | 江苏麟龙新材料股份有限公司 | Aluminum-silicon-zinc-rare earth-ferrum-copper-manganese-zirconium-containing hot dip coating alloy and method for preparing same |
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| CN101186998B (en) * | 2007-12-17 | 2012-01-11 | 中国电力科学研究院 | Transmission line pole tower long-lasting anticorrosion coating and its preparation process |
| CN102337489B (en) * | 2009-11-19 | 2013-03-27 | 江苏麟龙新材料股份有限公司 | Al-Zn-Si-RE-Ti-containing hot dipping cast aluminum alloy and preparation method thereof |
| CN101935789B (en) * | 2009-11-19 | 2012-03-07 | 江苏麟龙新材料股份有限公司 | Hot-dipped cast aluminum alloy containing Al-Zn-Si-Mg-RE-Ti-Ni and manufacturing method thereof |
| CN106282700A (en) * | 2016-09-18 | 2017-01-04 | 桂林理工大学 | A kind of High Strength Cast Aluminum Alloy without heat treatment and preparation method thereof |
| CN111575664B (en) * | 2020-05-18 | 2021-08-17 | 中国科学院力学研究所 | Film coating method for realizing cold plating on surface of magnetic material by utilizing ionization sputtering technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101736257B (en) * | 2009-12-28 | 2011-11-23 | 江苏麟龙新材料股份有限公司 | Aluminum-silicon-zinc-rare earth-ferrum-copper-manganese-zirconium-containing hot dip coating alloy and method for preparing same |
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| CN1807667A (en) | 2006-07-26 |
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Denomination of invention: Galvanized steel sheet coating material and its production method Effective date of registration: 20100914 Granted publication date: 20080116 Pledgee: Jiangsu Xizhou rural commercial bank Limited by Share Ltd Pledgor: Wuxi Linlong Aluminium Co., Ltd. Registration number: 2010990000885 |
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Owner name: JIANGSU LINLONG NEW MATERIAL CO., LTD. Free format text: FORMER NAME: WUXI LINLONG ALUMINIUM CO., LTD. |
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Address after: 214183 Jiangsu city of Wuxi Province Yu Qi Huishan Economic Development Zone, supporting the district (dawn village) Patentee after: Jiangsu Linlong New Materials Co., Ltd. Address before: 214183, Wuxi, Jiangsu province Huishan jade Town Industrial Zone Patentee before: Wuxi Linlong Aluminium Co., Ltd. |
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