CN100491560C - Hot dip coating aluminum zinc lead antimony alloy in use for zinc plating for narrow steel strip, method and ingot mold - Google Patents
Hot dip coating aluminum zinc lead antimony alloy in use for zinc plating for narrow steel strip, method and ingot mold Download PDFInfo
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- CN100491560C CN100491560C CNB2007100354171A CN200710035417A CN100491560C CN 100491560 C CN100491560 C CN 100491560C CN B2007100354171 A CNB2007100354171 A CN B2007100354171A CN 200710035417 A CN200710035417 A CN 200710035417A CN 100491560 C CN100491560 C CN 100491560C
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Abstract
This invention relates to a hot-galvanized Al-Pb-Sb alloy, its hot-dip galvanization method and its ingot for narrow steel belt. The hot-galvanized Al-Pb-Sb alloy comprises: Al 0.4-1.0 wt.%, Pb 0.003-0.1 wt.%, Sb 0.1-0.25 wt.%, and Zn and impurities as balance. The T-shaped ingot of the hot-galvanized Al-Pb-Sb alloy is a trapezoid with two symmetric warped ears. The ears have lift-off holes. The hot-galvanized Al-Pb-Sb alloy is directly smelted into a zinc bath. The hot-galvanized Al-Pb-Sb alloy can improve the fluidity of the zinc bath, decrease the residue rate, and increase the smoothness of the galvanization layer. The hot-galvanized Al-Pb-Sb alloy is used for galvanizing on a narrow steel belt.
Description
Technical field
The present invention relates to a kind of hot-dip galvanized alloy, hot galvanizing method and zinc alloy ingot shape, particularly be used for the Ribbon Steel galvanizing zinc alloy, Ribbon Steel is carried out method of hot-dip galvanizing and is used for the zinc alloy ingot shape of Ribbon Steel galvanizing.
Background technology
The galvanizing industry adopts zinc alloy baths zinc-plated both at home and abroad at present, compare with pure zinc plating, all made significant headway in aspects such as the corrosion resistance nature of its coating, surface quality, binding force of cladding material, used various zinc alloy baths have solved the problem that fluidity of molten is poor, coating is thick partially, coating surface smooth finish is not good enough to a certain extent at present, but last zinc amount is still higher, causes zinc-plated cost higher under the situation that the zinc price rises significantly in recent years.
The Ribbon Steel galvanizing generally is to adopt Q195 class substrate to carry out immersion plating zinc, its used zinc is bathed and is prepared with zinc alloy in the production scene, Ribbon Steel galvanizing zinc bath compound method generally is at present: adopt the hot-dip galvanized alloy that contains aluminium 0.2～0.4%, collocation adds zinc-aluminium and adjusts alloy preparation, and certain customers still adopt little zinc ingot metal to join the zinc-mode of aluminium adjustment alloy and prepare zinc and bathe.The method of this on-the-spot preparation has proposed higher requirement to its operator, require it to possess certain zinc-plated knowwhy, the addition of various materials is answered accurate measurement, reply zinc is bathed composition and is detected, could guarantee that the final zinc bath composition that forms meets service requirements, present factory does not mostly possess above-noted persons and testing conditions, be difficult to accurately hold addition, cause the final zinc bath composition that forms unclear, even possess above-mentioned condition, these materials are in process for preparation, generally all be difficult to reach abundant fusion, mixed uniformly state, cause in the zinc bath and produce various elements segregation and scaling loss, can't realize re-set target, influence zinc-plated effect.
Because the zinc-plated substrate material that is adopted is relatively poor, belong to the high silicon steel material of high-carbon as Q195, its fusing speed is fast than other steel in zinc-plated operation, these type of steel also are not suitable for carrying out hot dip process, but, can effectively reduce production costs and extensively adopted by the zinc-plated user in arrowband because its market value is lower.The Q195 steel is many through residual greasy dirt, the iron powder on rolling metacoxa surface, and the matting that zinc-plated production technique generally is not provided with degreasing, takes off rust, a large amount of residual ferrous powders enter in the zinc bath, and the iron level severe overweight that zinc is bathed is generally more than 0.06%.
On the other hand, because the aluminium content of existing zinc alloy only is 0.2～0.4%, on the low side, deficiency is so that the zinc-iron cpd in the zinc bath changes into aluminium-iron cpd fully, to stop these zinc-iron cpd coacervating large particle to sink to forming end slag, adopt it to be mixed with hot dip galvanizing process that the zinc-plated zinc in arrowband bathes and still exist plating back plate face " dross ", zinc-plated slag rate up to problems such as about 30%.Usually the zinc-plated producer in arrowband adjusts the alloy except interpolation zinc-aluminium, also adds metals such as lead, aluminium, tin as required and bathe composition to improve zinc to the zinc bath, can solve the problem of coating surface luminance brightness to a certain extent as interpolation tin.Can cause the whiting of galvanized sheet face again but directly add tin, zinc is spent defectives such as not attractive in appearance, causes zinc-plated cost to rise simultaneously.
Therefore, in zinc alloy, add other compositions in the prior art to improve the method for performance, reckon without add the factor that side effect unavoidably appears in composition, do not consider to use the problems in the process for preparation yet, can not reach desired effect because of the problem that the preparation link exists inevitably.
Usually the ingot shape of ZINC ALLOY is a rectangular shape, and its size differs, and little ingot is generally at 20～25kg/ piece, and big ingot has 380kg～2000kg/ piece not wait.Zinc-plated for the arrowband, production capacity is less relatively, and the zinc-plated volume of equipment that adopts is also less, and generally at 20～40t, as when adopting 20～25kg fritter ZINC ALLOY, the frequency of interpolation is too many, and addition is wayward, and labour intensity is big; And the alloy pig surface-area is big, and zinc oxide slag output capacity height has increased zinc-plated manufacturer production cost, is unfavorable for production process control.When if single ingot weight surpasses 1t, specific surface area is less relatively, but concerning the user, adds zinc pot difficulty, and cause the zinc bath temperature fluctuation easily, concerning alloy pig factory, it has convenient for production, storehouse pile safety, save the storage space, lifting is convenient, and antitheft in transit advantage does not still have a kind of to both all favourable ingot shapes on the market.
In sum, prior art provides the Ribbon Steel galvanizing undesirable with its composition of zinc alloy, and its using method has proposed higher requirement to the user, and its ingot shape is inconvenient to use and transport, and needs further to improve.
Summary of the invention
The object of the present invention is to provide a kind of arrowband galvanized hot dip zinc-aluminium lead antimony alloy that is used for, it can prepare alloying constituent by service requirements, directly join and be fused into the zinc bath in the galvanizing equipment, the mobile obviously improvement that its composition can make zinc bathe, in corrosion resistance nature that ensures galvanized sheet and machining property, suitably reduce zinc coating thickness, can effectively reduce galvanized sheet " dross " phenomenon, reduce the slag rate, improve coating surface smooth finish, using method is simple.
Another object of the present invention is to provide a kind of galvanized hot galvanizing method in arrowband that is used for, its employed zinc is bathed and be need not preparation, and the mobile obviously improvement that zinc is bathed, in corrosion resistance nature that ensures galvanized sheet and machining property, suitably reduce zinc coating thickness, can effectively reduce galvanized sheet " dross " phenomenon, reduce the slag rate, improve coating surface smooth finish.
Another object of the present invention is to provide a kind of ingot shape that is suitable for the hot dip zinc-aluminium lead antimony alloy of the zinc-plated usefulness in arrowband, it has suitable shape and ingot is heavy, can satisfy the requirement of arrowband low capacity galvanizing equipment zincification, convenient lifting, be convenient to fork fortune, be fit to storage multilayer pile, stability and safety.
Technical scheme of the present invention is: a kind of arrowband galvanized hot dip zinc-aluminium lead antimony alloy that is used for, it is characterized in that: its component and weight percent thereof are: 0.4～1.0% (wt) Al,～0.1% 0.003 (wt) Pb, 0.1～0.25% (wt) Sb, all the other are zinc and unavoidable impurities.
As to further improvement of the present invention, its component and weight percent thereof are: 0.5～0.8% (wt) Al, and 0.003～0.05% (wt) Pb, 0.1～0.2% (wt) Sb, all the other are zinc and unavoidable impurities.
As to further improvement of the present invention, its component and weight percent thereof are: 0.5～0.7% (wt) Al, and 0.003～0.01% (wt) Pb, 0.1～0.2% (wt) Sb, all the other are zinc and unavoidable impurities.
A kind of ingot shape that is used for arrowband galvanized hot dip zinc-aluminium lead antimony alloy, it is to have " T " font rectangular parallelepiped that two symmetrical ears stick up, and the rectangular parallelepiped bottom is the plane, and ear sticks up and is provided with erection opening, and four sides are the inclined-plane, make rectangular parallelepiped present up big and down small shape.
As to further improvement of the present invention, described ingot heavily is 430～530kg, and ingot shape length is 985～1015mm, and width is 410～430mm, highly is 210～230mm.
A kind of galvanized hot galvanizing method in arrowband that is used for, it is above-mentioned hot dip zinc-aluminium lead antimony alloy direct fusion to be formed zinc bathe.
Beneficial effect of the present invention is:
The present invention is directed to present zinc bath prepares with zinc alloy in the production scene, its composition is wayward, to the demanding defective of operator, zinc alloy is promptly bathed composition by desired zinc by user's requirement before the production moulding prepare, can directly be fused into zinc during use in galvanizing equipment bathes, need not on-the-spot preparation, greatly reduce requirement, realized compositions such as the aluminium in the alloy, antimony directly have been formulated into the ratio of the zinc-plated production in suitable arrowband the user.
The present invention is directed in the prior art and Ribbon Steel is being carried out to cause the situation that iron level exceeds standard in the zinc bath in the galvanizing process inevitably, suitably improve the aluminium content in the zinc bath, so that the zinc-iron cpd in the zinc bath can more fully change into aluminium-iron cpd, convert the zinc-iron cpd small-particle that is suspension in the zinc bath to aluminium-iron cpd, to stop these zinc-iron cpd coacervating large particle to sink to forming end slag, because of the proportion of aluminium-iron cpd is 1/4th of zinc-iron cpd, aluminium-iron cpd can form scum silica frost because of light specific gravity come-up in zinc is bathed, when effectively reducing end slag, can reduce the slag rate, play the effect that zinc is bathed that purifies simultaneously, effectively reduce zinc-plated " dross " phenomenon, improve the flowability that zinc is bathed, suitably reduced the galvanized zinc amount that goes up.Add an amount of lead in alloy, its purpose also is to improve the flowability of zinc bath to reduce the zinc amount that goes up.Above-mentioned measure can make the last zinc amount of coating reduce by 10～20%, and galvanized slag rate reduces 5～20%, and bright and clean, the luminance brightness of simultaneously zinc-plated back plate face obviously improve.The present invention does not add the element that tin etc. has certain side effect, has avoided the generation of side effect.
Because it is zinc-plated that the present invention adopts above-mentioned alloy to carry out Ribbon Steel, effectively reduces zinc-plated " dross " phenomenon, improved the flowability that zinc is bathed, suitably reduce the galvanized zinc amount that goes up.
Owing to the invention provides the ingot shape that is used for arrowband galvanized hot dip zinc-aluminium lead antimony alloy, this ingot shape sectional area is less, can keep the relatively stable of zinc-plated temperature during zinc-plated feeding intake; The ingot outer surface area is fit to, and can reduce the oxide compound that forms greatly because of outer surface area preferably, and single ingot weight is 480 ± 50 kilograms, and is more moderate.For little ingot, reduced reinforced frequency, need not the bundling transportation, for big ingot, avoided the influence to zinc bath temperature, reinforced convenient, the concentrated shrinkage cavity that alloy pig is formed in casting technique can play certain effect that alleviates, the design of one end has lifting hole(eyelet), be convenient to lift charging, alloy pig area broad in the middle lands, two ends ear perk, be convenient to fork truck fork fortune and pile, stability and safety, effective storage space of reducing.
Description of drawings
Fig. 1 is an ingot shape front view of the present invention;
Fig. 2 is an ingot shape left view of the present invention;
Fig. 3 is an ingot shape vertical view of the present invention.
Among the figure: at the bottom of 1-zinc ingot metal, 2-lifting hole(eyelet), 3-ear sticks up.
Embodiment
A kind of arrowband galvanized hot dip zinc-aluminium lead antimony alloy that is used for, the material of Ribbon Steel is Q195, zinc alloy component and weight percent thereof are: 0.4% (wt) Al, 0.003% (wt) Pb, 0.1% (wt) Sb, all the other are zinc and unavoidable impurities.Its ingot shape is to have " T " font rectangular parallelepiped that two symmetrical ears stick up, and the rectangular parallelepiped bottom is the plane, and ear sticks up and is provided with erection opening, four sides are the inclined-plane, make rectangular parallelepiped present up big and down small shape, and ingot heavily is 530kg, the ingot shape length L is 1015mm, and width B is 430mm, and height H is 230mm.
Above-mentioned alloy direct fusion being formed zinc bathe, is that the Ribbon Steel of Q195 carries out pot galvanize to material.
A kind of arrowband galvanized hot dip zinc-aluminium lead antimony alloy that is used for, the material of Ribbon Steel is Q195, zinc alloy component and weight percent thereof are: 0.5% (wt) Al, 0.003% (wt) Pb, 0.1% (wt) Sb, all the other are zinc and unavoidable impurities.Its ingot shape is to have " T " font rectangular parallelepiped that two symmetrical ears stick up, and the rectangular parallelepiped bottom is the plane, and ear sticks up and is provided with erection opening, four sides are the inclined-plane, make rectangular parallelepiped present up big and down small shape, and ingot heavily is 430kg, the ingot shape length L is 985mm, and width B is 410mm, and height H is 210mm.
Above-mentioned alloy direct fusion being formed zinc bathe, is that the Ribbon Steel of Q195 carries out pot galvanize to material.
A kind of arrowband galvanized hot dip zinc-aluminium lead antimony alloy that is used for, zinc alloy component and weight percent thereof are: 0.5% (wt) Al, 0.003% (wt) Pb, 0.1% (wt) Sb, all the other are zinc and unavoidable impurities.Its ingot shape is to have " T " font rectangular parallelepiped that two symmetrical ears stick up, and the rectangular parallelepiped bottom is the plane, and ear sticks up and is provided with erection opening, four sides are the inclined-plane, make rectangular parallelepiped present up big and down small shape, and ingot heavily is 530kg, the ingot shape length L is 1015mm, and width B is 430mm, and height H is 230mm.
Above-mentioned alloy direct fusion being formed zinc bathe, is that the Ribbon Steel of Q195 carries out pot galvanize to material.
Embodiment 4
A kind of arrowband galvanized hot dip zinc-aluminium lead antimony alloy that is used for, the material of Ribbon Steel is Q195, zinc alloy component and weight percent thereof are: 0.7% (wt) Al, 0.01% (wt) Pb, 0.2% (wt) Sb, all the other are zinc and unavoidable impurities.Its ingot shape is to have " T " font rectangular parallelepiped that two symmetrical ears stick up, and the rectangular parallelepiped bottom is the plane, and ear sticks up and is provided with erection opening, four sides are the inclined-plane, make rectangular parallelepiped present up big and down small shape, and ingot heavily is 430kg, the ingot shape length L is 985mm, and width B is 410mm, and height H is 210mm.
Above-mentioned alloy direct fusion being formed zinc bathe, is that the Ribbon Steel of Q195 carries out pot galvanize to material.
Embodiment 5
A kind of arrowband galvanized hot dip zinc-aluminium lead antimony alloy that is used for, the material of Ribbon Steel is Q195, zinc alloy component and weight percent thereof are: 0.5% (wt) Al, 0.003% (wt) Pb, 0.1% (wt) Sb, all the other are zinc and unavoidable impurities.Its ingot shape is to have " T " font rectangular parallelepiped that two symmetrical ears stick up, and the rectangular parallelepiped bottom is the plane, and ear sticks up and is provided with erection opening, four sides are the inclined-plane, make rectangular parallelepiped present up big and down small shape, and ingot heavily is 530kg, the ingot shape length L is 1015mm, and width B is 430mm, and height H is 230mm.
Above-mentioned alloy direct fusion being formed zinc bathe, is that the Ribbon Steel of Q195 carries out pot galvanize to material.
Embodiment 6
A kind of arrowband galvanized hot dip zinc-aluminium lead antimony alloy that is used for, the material of Ribbon Steel is Q195, zinc alloy component and weight percent thereof are: 0.8% (wt) Al, 0.05% (wt) Pb, 0.2% (wt) Sb, all the other are zinc and unavoidable impurities.Its ingot shape is to have " T " font rectangular parallelepiped that two symmetrical ears stick up, and the rectangular parallelepiped bottom is the plane, and ear sticks up and is provided with erection opening, four sides are the inclined-plane, make rectangular parallelepiped present up big and down small shape, and ingot heavily is 430kg, the ingot shape length L is 985mm, and width B is 410mm, and height H is 210mm.
Above-mentioned alloy direct fusion being formed zinc bathe, is that the Ribbon Steel of Q195 carries out pot galvanize to material.
Claims (5)
1, a kind of arrowband galvanized hot dip zinc-aluminium lead antimony alloy that is used for, it is characterized in that: its component and weight percent thereof are: 0.4～1.0%Al, 0.003～0.1%Pb, 0.1～0.25%Sb, all the other are zinc and unavoidable impurities.
2, the arrowband galvanized hot dip zinc-aluminium lead antimony alloy that is used for according to claim 1, it is characterized in that: its component and weight percent thereof are: 0.5～0.8%Al, 0.003～0.05%Pb, 0.1～0.2%Sb, all the other are zinc and unavoidable impurities.
3, the arrowband galvanized hot dip zinc-aluminium lead antimony alloy that is used for according to claim 1, it is characterized in that: its component and weight percent thereof are: 0.5～0.7%Al, 0.003～0.01%Pb, 0.1～0.2%Sb, all the other are zinc and unavoidable impurities.
4, a kind of ingot that is used for each described hot dip zinc-aluminium lead antimony alloy of claim 1～3, it is to have " T " font rectangular parallelepiped that two symmetrical ears stick up, the rectangular parallelepiped bottom is the plane, ear sticks up and is provided with erection opening, and four sides are the inclined-plane, makes rectangular parallelepiped present up big and down small shape, it is characterized in that: described ingot heavily is 430～530kg, ingot shape length is 985～1015mm, and width is 410～430mm, highly is 210～230mm.
5, the method for the galvanized pot galvanize in a kind of arrowband is characterized in that: each described hot dip zinc-aluminium lead antimony alloy is done the zinc bath in its employing claim 1～3.
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| CNB2007100354171A CN100491560C (en) | 2007-07-23 | 2007-07-23 | Hot dip coating aluminum zinc lead antimony alloy in use for zinc plating for narrow steel strip, method and ingot mold |
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| CNB2007100354171A CN100491560C (en) | 2007-07-23 | 2007-07-23 | Hot dip coating aluminum zinc lead antimony alloy in use for zinc plating for narrow steel strip, method and ingot mold |
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| CN100491560C true CN100491560C (en) | 2009-05-27 |
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| CN101792874B (en) * | 2010-04-23 | 2012-12-19 | 宁波博威合金材料股份有限公司 | Easy-cutting antimony-zinc alloy and preparation method of bar thereof |
| CN104233148A (en) * | 2014-09-12 | 2014-12-24 | 首钢总公司 | Method for controlling flowing of galvanizing zinc |
| CN109097630A (en) * | 2018-08-22 | 2018-12-28 | 株洲冶炼集团股份有限公司 | A kind of Hot Dip Zinc Alloys for narrowband galvanizing steel |
| WO2020229875A1 (en) * | 2019-05-13 | 2020-11-19 | Arcelormittal | Notched ingot improving a line productivity |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4056366A (en) * | 1975-12-24 | 1977-11-01 | Inland Steel Company | Zinc-aluminum alloy coating and method of hot-dip coating |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4056366A (en) * | 1975-12-24 | 1977-11-01 | Inland Steel Company | Zinc-aluminum alloy coating and method of hot-dip coating |
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