CN109023200A - A kind of preparation method of ultra-thin galvanized sheet - Google Patents

A kind of preparation method of ultra-thin galvanized sheet Download PDF

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Publication number
CN109023200A
CN109023200A CN201811034558.6A CN201811034558A CN109023200A CN 109023200 A CN109023200 A CN 109023200A CN 201811034558 A CN201811034558 A CN 201811034558A CN 109023200 A CN109023200 A CN 109023200A
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China
Prior art keywords
annealing
ultra
preparation
steel band
galvanized sheet
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CN201811034558.6A
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Chinese (zh)
Inventor
郭建伟
李建光
孙新新
张伟伟
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Shandong Boxing Yunguang Iron And Steel Co Ltd
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Shandong Boxing Yunguang Iron And Steel Co Ltd
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Priority to CN201811034558.6A priority Critical patent/CN109023200A/en
Publication of CN109023200A publication Critical patent/CN109023200A/en
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    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING 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
    • C23C2/00Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/34Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
    • C23C2/36Elongated material
    • C23C2/40Plates; Strips
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C18/00Alloys based on zinc
    • C22C18/04Alloys based on zinc with aluminium as the next major constituent
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING 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
    • C23C2/00Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/02Pretreatment of the material to be coated, e.g. for coating on selected surface areas
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING 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
    • C23C2/00Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/04Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
    • C23C2/06Zinc or cadmium or alloys based thereon

Abstract

A kind of preparation method of ultra-thin galvanized sheet changes the technology controlling and process mode of annealing reduction furnace, its furnace temperature of annealing is made to guarantee the annealing effect and flatness that guarantee plate face in 550-600 or so, each section by heating power more evenly;Heat generating component resistance band and W type radiant tube are changed into U-shaped radiant tube, back zone soaking zone heat generating component power is improved, improves back zone soaking section temperature, guarantees that technique enters pot temperature at 550 DEG C or so, Improving The Quality of Products;Each section of drawing lining tensioner roller diameter is reduced, reduces the cornerite angle of steel band plate face, it is made to draw lining power more preferably uniform;Boron element is added in impregnating zinc pot, guarantees the surface harden ability for impregnating steel band, improves steel strip surface hardness, it is made to guarantee the stability of finished product template.

Description

A kind of preparation method of ultra-thin galvanized sheet
Technical field
The present invention relates to metallic construction materials manufacturing technology field more particularly to a kind of preparation methods of ultra-thin galvanized sheet.
Background technique
China's hot galvanizing production development is constantly in hysteretic state.The 1950s to the sixties has built up 13 successively Single steel plate flux method continuous galvanizing line, ability are 100,000 t/a, but because of low output, at high cost, of poor quality, pollution environment, economy The defects of of poor benefits, successively stops, changes the line of production.From late 1970s, China just starts to build large-scale broadband continuous galvanizing line.
Hot-dip galvanized steel strip is always kind in short supply in China market.It, every year will be from since mid-term the 1990s Ten thousand tons or so of external import 80-100.With the development of the development of domestic economy, especially automobile, household electrical appliances and construction industry, to plating The demand of zinc strip also greatly increases.
The characteristics of galvanized steel plain sheet: zinc-plated energy effectively preventing corrosion of steel prolongs the service life.Galvanized sheet metal (thickness It is also known as galvanized iron sheet for 0.4~1.2mm), is commonly called as galvanized iron sheet.Galvanized steel plain sheet is widely used in building, vehicle, household electrical appliances, daily necessities Etc. industries.Although various dazzling thin plate galvanizing productions are more currently on the market, it really is able to accomplish that quality is stablized, Especially currently not yet with a thickness of the ultra-thin galvanized steel plain sheet of 0.10~0.18mm, but now in structural metal class product, The utilization rate of ultra-thin galvanizing production accounts for 40%, and scientific research institution/manufacturers at different levels are trying every possible means to break through this bottleneck always, but It is all without obtaining good effect.
Such as application No. is 201410469399.8 patents of invention to disclose a kind of cold-rolled substrate galvanized sheet and its preparation side Method, technical solution are as follows: the galvanized sheet through cold rolling critical strain treated steel substrate and overlay coating by forming, the table The aluminium for being 0.2~0.4% containing weight percent in the coating of face, 0.05~0.175% antimony, surplus is zinc.Preparation method: Steel substrate pretreatment: to hot rolled plate cold rolling and cold rolling reduction ratio 10%~20%;The preparation of galvanizing flux;Hot dip is carried out after annealing Zinc: annealing and controls grain size, and annealing temperature is 780~810 DEG C, carries out hot galvanizing after annealing, and hot galvanizing temperature is 460~ 470 DEG C, 460 DEG C of zinc pot temperature, the method can not produce ultra-thin steel sheet, and with the method, since furnace temperature is too high, institute's zinc coat is easy Corrugation, tension is too big, and steel plate is easily pulled off.
Summary of the invention
To solve above-mentioned problem of the prior art, the present invention provides a kind of preparation method of ultra-thin galvanized sheet, using hot dipping Galvannealing, by change product own mechanical performance and impregnate surface metal composition, Improving The Quality of Products, replenish existing market without Method produces the blank of ultra-thin galvanizing production, and this product self performance is stablized, and can be universally used in the use of multiple fields, and product is attached Value added height, environment protecting are good.
In order to reach the goals above, the present invention takes following technical scheme: a kind of preparation method of ultra-thin galvanized sheet, including Following steps:
(1) steel band pre-processes: after the hydrochloric acid scrub that carbon steel cold-reduced sheet is first passed through to concentration 5%, being rinsed with clear water;Then again It scrubs after the sodium hydroxide scrub that over-richness is 22-30%, then with clear water, is dried after finally being handled with clear water hydro-peening;
(2) configuration of zinc pot solution: chemical component weight per distribution ratio is Al (aluminium): 24.51%, Fe in zinc pot solution (iron): 0.379%, B (boron): 0.0002%, Mg (magnesium): 0.0140%, Cu (copper): 0.0231%, Mn (manganese): 0.0055%, Si (silicon): 0.171%, Pb (lead): 0.066%, Sb (antimony): 0.0188%, Ti (titanium): 0.0135%, Sn (tin): 0.053%, Cd (cadmium): 0.041%, Cr (chromium): 0.050%, Zn (zinc): 74.6549%;
(3) strip anneal is handled: will be passed through pretreated steel band in step 1), is put into annealing reduction furnace, change is moved back The technology controlling and process mode of fiery reduction furnace, i.e., by annealing reduction furnace temperature control at 520~600 DEG C, by the tension value control of tensioner System is in 140~180kg/m2, guarantee the annealing effect and flatness of plate face;
(4) hot galvanizing is carried out after annealing: will be carried out hot galvanizing in step 3) treated steel band is placed on zinc pot, is guaranteed zinc pot Solution is 550~570 DEG C.
Furtherly, annealing furnace back zone soaking section temperature is improved in the step 2), guarantees that steel band enters the temperature of zinc pot and exists 550 DEG C or so.
Furtherly, the heat generating component resistance band W type radiant tube of the annealing reduction furnace in the step 3) is changed into U-shaped spoke Penetrate pipe.
Furtherly, the tensioner in the step 3) is responsible for each section and the jockey pulley roller diameter of lining is drawn to be reduced by 600mm For 400mm, reduce the cornerite angle of steel band plate face, keeps its tension lining power more uniform.
Furtherly, using ultra-thin galvanized sheet made of above-mentioned preparation method with a thickness of 0.1~0.18mm.
Compared with prior art, the beneficial effects of the present invention are:
(1) the technology controlling and process mode for changing annealing reduction furnace makes its furnace temperature of annealing guarantee to guarantee in 550-600 or so The annealing effect and flatness of plate face, each section by heating power more evenly;
(2) heat generating component resistance band and W type radiant tube are changed into U-shaped radiant tube, improves back zone soaking zone heat generating component Power improves back zone soaking section temperature, guarantees that technique enters pot temperature at 550 DEG C or so, Improving The Quality of Products;
(3) it reduces each section of drawing and serves as a contrast tensioner roller diameter, reduce the cornerite angle of steel band plate face, it is made to draw lining power more preferably uniform;
(4) boron element is added in impregnating zinc pot, guarantees the surface harden ability for impregnating steel band, improves steel strip surface hardness, It is set to guarantee the stability of finished product template.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with of the invention specific real Mode is applied, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is this Invention a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art exist Every other embodiment obtained under the premise of creative work is not made, shall fall within the protection scope of the present invention.
Embodiment 1:
A kind of preparation method of ultra-thin galvanized sheet, comprising the following steps:
(1) steel band pre-processes: after the hydrochloric acid scrub that carbon steel cold-reduced sheet is first passed through to concentration 5%, being rinsed with clear water;Then again It scrubs after the sodium hydroxide scrub that over-richness is 22%, then with clear water, is dried after finally being handled with clear water hydro-peening;
(2) configuration of zinc pot solution: chemical component weight per distribution ratio is Al (aluminium): 24.51%, Fe in zinc pot solution (iron): 0.379%, B (boron): 0.0002%, Mg (magnesium): 0.0140%, Cu (copper): 0.0231%, Mn (manganese): 0.0055%, Si (silicon): 0.171%, Pb (lead): 0.066%, Sb (antimony): 0.0188%, Ti (titanium): 0.0135%, Sn (tin): 0.053%, Cd (cadmium): 0.041%, Cr (chromium): 0.050%, Zn (zinc): 74.6549%;
(3) strip anneal is handled: will be passed through pretreated steel band in step 1), is put into annealing reduction furnace, change is moved back The tension value control of tensioner is existed annealing reduction furnace temperature control at 520 DEG C by the technology controlling and process mode of fiery reduction furnace 140kg/m2 guarantees the annealing effect and flatness of plate face;
(4) hot galvanizing is carried out after annealing: will be carried out hot galvanizing in step 3) treated steel band is placed on zinc pot, is guaranteed zinc pot Solution is 550 DEG C.
Annealing furnace back zone soaking section temperature is improved in the step 2), guarantees that steel band enters the temperature of zinc pot at 550 DEG C or so.
The heat generating component resistance band W type radiant tube of annealing reduction furnace in the step 3) is changed into U-shaped radiant tube.
Tensioner in the step 3) is responsible for each section and the jockey pulley roller diameter of lining is drawn to be reduced into 400mm by 600mm, The cornerite angle for reducing steel band plate face keeps its tension lining power more uniform.
Using ultra-thin galvanized sheet made of above-mentioned preparation method with a thickness of 0.1mm.
Embodiment 2:
A kind of preparation method of ultra-thin galvanized sheet, comprising the following steps:
(1) steel band pre-processes: after the hydrochloric acid scrub that carbon steel cold-reduced sheet is first passed through to concentration 5%, being rinsed with clear water;Then again It scrubs after the sodium hydroxide scrub that over-richness is 25%, then with clear water, is dried after finally being handled with clear water hydro-peening;
(2) configuration of zinc pot solution: chemical component weight per distribution ratio is Al (aluminium): 24.51%, Fe in zinc pot solution (iron): 0.379%, B (boron): 0.0002%, Mg (magnesium): 0.0140%, Cu (copper): 0.0231%, Mn (manganese): 0.0055%, Si (silicon): 0.171%, Pb (lead): 0.066%, Sb (antimony): 0.0188%, Ti (titanium): 0.0135%, Sn (tin): 0.053%, Cd (cadmium): 0.041%, Cr (chromium): 0.050%, Zn (zinc): 74.6549%;
(3) strip anneal is handled: will be passed through pretreated steel band in step 1), is put into annealing reduction furnace, change is moved back The tension value control of tensioner is existed annealing reduction furnace temperature control at 570 DEG C by the technology controlling and process mode of fiery reduction furnace 160kg/m2 guarantees the annealing effect and flatness of plate face;
(4) hot galvanizing is carried out after annealing: will be carried out hot galvanizing in step 3) treated steel band is placed on zinc pot, is guaranteed zinc pot Solution is 560 DEG C.
Annealing furnace back zone soaking section temperature is improved in the step 2), guarantees that steel band enters the temperature of zinc pot at 550 DEG C or so.
The heat generating component resistance band W type radiant tube of annealing reduction furnace in the step 3) is changed into U-shaped radiant tube.
Tensioner in the step 3) is responsible for each section and the jockey pulley roller diameter of lining is drawn to be reduced into 400mm by 600mm, The cornerite angle for reducing steel band plate face keeps its tension lining power more uniform.
Using ultra-thin galvanized sheet made of above-mentioned preparation method with a thickness of 0.14mm.
Embodiment 3:
A kind of preparation method of ultra-thin galvanized sheet, comprising the following steps:
(1) steel band pre-processes: after the hydrochloric acid scrub that carbon steel cold-reduced sheet is first passed through to concentration 5%, being rinsed with clear water;Then again It scrubs after the sodium hydroxide scrub that over-richness is 30%, then with clear water, is dried after finally being handled with clear water hydro-peening;
(2) configuration of zinc pot solution: chemical component weight per distribution ratio is Al (aluminium): 24.51%, Fe in zinc pot solution (iron): 0.379%, B (boron): 0.0002%, Mg (magnesium): 0.0140%, Cu (copper): 0.0231%, Mn (manganese): 0.0055%, Si (silicon): 0.171%, Pb (lead): 0.066%, Sb (antimony): 0.0188%, Ti (titanium): 0.0135%, Sn (tin): 0.053%, Cd (cadmium): 0.041%, Cr (chromium): 0.050%, Zn (zinc): 74.6549%;
(3) strip anneal is handled: will be passed through pretreated steel band in step 1), is put into annealing reduction furnace, change is moved back The tension value control of tensioner is existed annealing reduction furnace temperature control at 600 DEG C by the technology controlling and process mode of fiery reduction furnace 180kg/m2 guarantees the annealing effect and flatness of plate face;
(4) hot galvanizing is carried out after annealing: will be carried out hot galvanizing in step 3) treated steel band is placed on zinc pot, is guaranteed zinc pot Solution is 570 DEG C.
Annealing furnace back zone soaking section temperature is improved in the step 2), guarantees that steel band enters the temperature of zinc pot at 550 DEG C or so.
The heat generating component resistance band W type radiant tube of annealing reduction furnace in the step 3) is changed into U-shaped radiant tube.
Tensioner in the step 3) is responsible for each section and the jockey pulley roller diameter of lining is drawn to be reduced into 400mm by 600mm, The cornerite angle for reducing steel band plate face keeps its tension lining power more uniform.
Using ultra-thin galvanized sheet made of above-mentioned preparation method with a thickness of 0.18mm.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations;Although Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features; And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and Range.

Claims (5)

1. a kind of preparation method of ultra-thin galvanized sheet, it is characterised in that: the following steps are included:
(1) steel band pre-processes: after the hydrochloric acid scrub that carbon steel cold-reduced sheet is first passed through to concentration 5%, being rinsed with clear water;Then using It after the sodium hydroxide scrub that concentration is 22-30%, then is scrubbed with clear water, is dried after finally being handled with clear water hydro-peening;
(2) configuration of zinc pot solution: chemical component weight per distribution ratio is Al (aluminium): 24.51%, Fe (iron) in zinc pot solution: 0.379%, B (boron): 0.0002%, Mg (magnesium): 0.0140%, Cu (copper): 0.0231%, Mn (manganese): 0.0055%, Si (silicon): 0.171%, Pb (lead): 0.066%, Sb (antimony): 0.0188%, Ti (titanium): 0.0135%, Sn (tin): 0.053%, Cd (cadmium): 0.041%, Cr (chromium): 0.050%, Zn (zinc): 74.6549%;
(3) strip anneal is handled: will be passed through pretreated steel band in step 1), is put into annealing reduction furnace, changes annealing also The tension value control of tensioner is existed annealing reduction furnace temperature control at 520~600 DEG C by the technology controlling and process mode of former furnace 140~180kg/m2, guarantee the annealing effect and flatness of plate face;
(4) hot galvanizing is carried out after annealing: will be carried out hot galvanizing in step 3) treated steel band is placed on zinc pot, is guaranteed zinc pot solution It is 550~570 DEG C.
2. a kind of preparation method of ultra-thin galvanized sheet according to claim 1, it is characterised in that: improved in the step 2) Annealing furnace back zone soaking section temperature guarantees that steel band enters the temperature of zinc pot at 550 DEG C or so.
3. a kind of preparation method of ultra-thin galvanized sheet according to claim 1, it is characterised in that: moving back in the step 3) The heat generating component resistance band W type radiant tube of fiery reduction furnace is changed into U-shaped radiant tube.
4. a kind of preparation method of ultra-thin galvanized sheet according to claim 1, it is characterised in that: in the step 3) Power machine is responsible for each section and the jockey pulley roller diameter of lining is drawn to be reduced into 400mm by 600mm, reduced the cornerite angle of steel band plate face, make It is more uniform that its tension serves as a contrast power.
5. a kind of preparation method of ultra-thin galvanized sheet according to claim 1, it is characterised in that: use above-mentioned preparation method Manufactured ultra-thin galvanized sheet is with a thickness of 0.1~0.18mm.
CN201811034558.6A 2018-09-06 2018-09-06 A kind of preparation method of ultra-thin galvanized sheet Pending CN109023200A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111349877A (en) * 2018-12-24 2020-06-30 新疆八一钢铁股份有限公司 Control method for accurate and stable zinc liquid components during melting of zinc

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CN102242248A (en) * 2011-06-27 2011-11-16 中冶南方(武汉)威仕工业炉有限公司 Vertical continuous bright annealing process for cold-rolled stainless steel coil
CN204880115U (en) * 2015-07-13 2015-12-16 武汉钢铁(集团)公司 A high -efficient heat transfer radiant tube for radiant tube heating furnace or heat treatment furnace
CN205011821U (en) * 2015-07-31 2016-02-03 中国重型机械研究院股份公司 High -quality ultra -thin hot -galvanize belted steel continuous production line
CN106916998A (en) * 2017-04-21 2017-07-04 孙健 A kind of super anticorrosive zinc base alloy layer steel band and its production method
CN108103429A (en) * 2016-11-25 2018-06-01 上海梅山钢铁股份有限公司 A kind of production method of hot-dip aluminizing zinc silicon steel plate

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Publication number Priority date Publication date Assignee Title
CN200967829Y (en) * 2006-10-31 2007-10-31 黄石山力科技发展有限公司 Radiation heating and cooling tube device for strip steel continuous annealing furnace
CN102242248A (en) * 2011-06-27 2011-11-16 中冶南方(武汉)威仕工业炉有限公司 Vertical continuous bright annealing process for cold-rolled stainless steel coil
CN204880115U (en) * 2015-07-13 2015-12-16 武汉钢铁(集团)公司 A high -efficient heat transfer radiant tube for radiant tube heating furnace or heat treatment furnace
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CN108103429A (en) * 2016-11-25 2018-06-01 上海梅山钢铁股份有限公司 A kind of production method of hot-dip aluminizing zinc silicon steel plate
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111349877A (en) * 2018-12-24 2020-06-30 新疆八一钢铁股份有限公司 Control method for accurate and stable zinc liquid components during melting of zinc
CN111349877B (en) * 2018-12-24 2022-03-29 新疆八一钢铁股份有限公司 Control method for accurate and stable zinc liquid components during melting of zinc

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Application publication date: 20181218