CN101323940A - Manufacturing method of hot dip galvanizing steel plate - Google Patents
Manufacturing method of hot dip galvanizing steel plate Download PDFInfo
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- CN101323940A CN101323940A CN 200810303233 CN200810303233A CN101323940A CN 101323940 A CN101323940 A CN 101323940A CN 200810303233 CN200810303233 CN 200810303233 CN 200810303233 A CN200810303233 A CN 200810303233A CN 101323940 A CN101323940 A CN 101323940A
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Abstract
The invention pertains to the field of hot-dip galvanized steel sheet manufacturing; the technical problem to be solved is to provide a production method of the hot-dip galvanized steel sheet, which is that through controlling the cooling speed of the steel sheet taking out of a zinc pot, the optimum grain orientation of a plating layer is adjusted so as to enhance the adhesive quality of the plating layer. The method specifically comprises the steps that the steel plate is pickled and annealed, and hot-dip galvanizing operation is carried out; during the operation, the temperature of starting to plate is 455 to 465 DEG C; the plating temperature in the zinc pot is 450 to 460 DEG C; Fe content in plating bath is less than 0.03 percent; Al content in plating bath is 0.16 to 0.18 percent; the speed of steel sheet conveyer unit is 110 to 120m/min; then air cooling is carried out to make compulsory cooling after steel sheet sent out of zinc pot with a cooling speed 70 to 90 percent. By adopting the technical conditions, the crystal grain Zn (002) with optimized orientation is formed between the steel sheet and the zinc plating layer, thus causing the performance of attachment, scratch resistance, wear resistance to be greatly improved.
Description
Technical field
The invention belongs to hot-dip galvanizing sheet steel and make the field, be specifically related to the good manufacturing method of hot dip galvanizing steel plate of a kind of adherence of coating
Background technology
Hot-dip galvanizing sheet steel since its excellent corrosion resisting performance, good coating performance and clean outward appearance obtained using widely at household electrical appliance, body of a motor car with production such as plates.Requirement to hot dip galvanizing steel plate coating is the strong adhesion of coating and substrate, does not come off during the punching press distortion, in addition good welding property, corrosion resistance nature and phosphorus characteristic will be arranged, with the erosion resistance after guaranteeing paint film adhesion and painting.Yet there is the efflorescence of coating in hot-dip galvanizing sheet steel and problem such as peels off in the punch process process of practical application, and the destruction of having caused coating further has influence on the erosion resistance of coating and being coated with property.
Japanese Patent " publication number CN17011130A, the open date: on November 23rd, 2005 " and " spy opens the 2002-4019 communique ", " spy opens the 2002-4020 communique " in the control hot-dip galvanizing sheet steel disclosed the metal die adherent method of surfaceness when suppressing drawing, and the method for improving deep drawing quality.Yet, when this hot-dip galvanizing sheet steel is studied in great detail, find, with the frictional distance of metal die more in short-term, control and the adherent effect of metal die are arranged, but long more then this effect of frictional distance is more little, sometimes can not improved effect according to the friction condition difference.In addition, in such scheme, as the method that improves this roughness, can enumerate the method for the condition, rolling condition etc. of control polishing roller, but in fact, zinc is piled into piece easily on roller, so be difficult to stably form the roughness of regulation on the hot-dip galvanizing sheet steel surface.In addition, in Japanese Patent " speciallyying permit communique No. 2993404 ", propose mother metal and use and contain P:0.010～0.10 quality %, Si:0.05～0.20 quality %, and the P that satisfies Si 〉=P improves the tack technology of coating tunicle when adding steel.Be applicable to when above-mentioned P adds steel plate beyond the steel problem of the coating tunicle tack that not necessarily is met yet exist.Disclose following technology in the Japanese Patent " spy opens the 2001-335908 communique ": mother metal passes through when being the soft steel of use C:0.05～0.25 quality % and the high strength residual austenite steel that adds Si, Al in right amount to add fixedly crystal boundary C such as Ti, Nb in right amount in steel, and raising plating boundary strength.Yet this is the technology about the residual austenite steel, not necessarily can obtain the problem of enough performances for the high tensile steel plate that does not have the residual austenite phase.
In sum, make the surface form the tack of being improved coating and base steel by membrane technique by the composition of change steel plate or by the surfaceness of controlling hot-dip galvanizing sheet steel in the prior art, but do not obtain effect preferably, also do not occur improving the method for the tack of coating and base steel at present by the weave construction of control coating.
Summary of the invention
Technical problem to be solved by this invention provides a kind of manufacture method of hot-dip galvanizing sheet steel, goes out the optimum grain orientation that rate of cooling behind the zinc pot is adjusted coating by control steel plate in the hot dip galvanizing process, improves the tack of coating.
Manufacturing method of hot dip galvanizing steel plate of the present invention is specially: steel plate carries out the pot galvanize operation after pickling, annealing; In the pot galvanize operating process, steel billet temperature is 455～465 ℃ when going into plating bath, and the plating bath temperature is 450～460 ℃ in the zinc pot, Fe content＜0.03% in the plating bath, and Al content in the plating bath: 0.16～0.18%, the unit speed that transmits steel plate is 110～120m/min; Steel plate cools off rate of cooling 70～90% with air-cooled the pressure after going out the zinc pot.
Described pressure is cooled to air-cooled steel plate temperature when going out plating bath is reduced to out 10～30% of plating bath temperature, then naturally cooling in air.
Described steel plate contains C:0.03～0.07% by weight percentage, Mn:0.01～0.03%, and Si:0.19～0.30%, P:0.006～0.019%, S:0.009～0.020%, Al:0.02～0.07%, all the other are Fe.
Described steel plate thickness is 0.8mm, and zinc-plated back zinc layer weight is 180～195g/m
2, the zinc laminar surface is through SiO
2Passivation Treatment.
The invention has the beneficial effects as follows:
(1) hot dip galvanizing process condition of the present invention makes the coating grain orientation optimization of hot-dip galvanizing sheet steel, and anti-zoned property, wear resistance and the adhesion property of coating obviously improve, and the coating zinc powder such as comes off, peels off at phenomenon to be reduced;
(2) hot dip galvanizing production process of the present invention is simple, and cost is lower.
Description of drawings
Fig. 1 is experimental example 1,6 and comparative example 11,15 typical X RD diffracting spectrum (a) experimental examples 1; (b) experimental example 6; (c) comparative example 11; (d) comparative example 15, and ordinate zou is a diffracted intensity, and X-coordinate is 2 θ/o.
Fig. 2 is a U-shaped bend specimen shape synoptic diagram: 1 pliability test machine clamp, 2 bend specimens.
Fig. 3 is experimental example 1～10, comparative example 11～15 and comparative example 16～20 zinc powder amount of coming off average and variances.
Fig. 4 is experimental example 1,6 and the profile measurement result of place, comparative example 11,16 coating cut mid-ways, 1 experimental example, 1,2 experimental example, 6,3 comparative examples, 11,4 comparative examples 16.
Embodiment
The invention will be further elaborated below in conjunction with embodiment.Embodiment only is used to illustrate the present invention, rather than limits the present invention by any way.
The preparation of embodiment 1 hot-dip galvanizing sheet steel experimental example 1～10 and comparative example 11～20
With thickness is 0.8mm, composition is C:0.03～0.07%, Mn:0.01～0.03%, Si:0.19～0.30%, P:0.006～0.019%, S:0.009～0.020%, Al:0.02～0.07%, all the other be the DX51D cold-rolled steel sheet of Fe and impurity after pickling, annealing, under the listed hot dip galvanizing process condition of table 1, carry out the pot galvanize operation, wherein the plating bath temperature is 450 ℃ in the zinc pot, Fe content＜0.03% in the plating bath, Al content: 0.16～0.18%, steel plate is gone into the plating bath temperature: 460 ℃, unit speed: 110～120m/min.Steel plate goes out to adopt behind the zinc pot air-cooledly forces cooling to steel plate, rate of cooling is 70～90%, obtain experimental example 1～No. 10, rate of cooling is adjusted at 30～50% o'clock and obtains comparative example 11～No. 15, and rate of cooling obtains 16～No. 20 comparative example when being adjusted into 0% (air naturally cooling).Zinc layer weight is controlled to 180g/m
2About, the zinc laminar surface is through SiO
2Passivation Treatment.Can estimate the grain orientation and the anti-adherence of coatings such as performance, anti-zoned property, wear resistance that come off of coating of coating by the following method.
Table 1 hot dip galvanizing process condition
The performance measurement of embodiment 2 hot-dip galvanizing sheet steel experimental examples 1～10 and comparative example 11～20
(1) coating grain orientation
Coating surface is not done any processing, carries out coating small-angle diffraction (5 ° of grazing angles) on x x ray diffractometer x (XRD) respectively, measures the diffraction peak intensity of coating.Experimental example 1 and 6 and comparative example 11 and the typical diffracting spectrum of 15 coating surfaces when 5 ° of grazing angles see Fig. 1.As seen the strongest diffraction peak Zn (002) intensity of Zn far exceeds comparative example 11 and 15 in experimental example 1 and 6 coating, and the top 100 peak of Zn is transferred to Zn (002) by Zn (101).Table 2 has been listed the diffracted intensity at each sample Zn (002) peak, as seen, being respectively 30～50% with rate of cooling compares with 0% comparative example, the experimental example rate of cooling is brought up to after 70～90%, the diffracted intensity at Zn (002) peak strengthens, all greater than 27000cts, coating crystal grain presents the preferred orientation of Zn (002) direction.
(3) the anti-performance that comes off of coating
Check the anti-performance that comes off of coating by " U " shape pliability test.Pliability test is carried out according to GB GB/T 232-1999 (metallic substance bend test method), and specimen preparation is with reference to GB/T 2975-1998 (steel and product made from steel mechanical property test sample position and specimen preparation).Fig. 2 shows the net shape of bend specimen.Sample is processed with wire cutting machine, use ethanol wiping specimen surface before the test, paste the scotch tape of identical size at all sample crooked position surfaces externally and internallies then, sample is processed in the enterprising line bend of flexing machine together with adhesive tape, collect the zinc powder that crooked position peels off by adhesive tape, the zinc powder amount of coming off of each coating is measured with the ICP method.Fig. 3 shows the average and the variance of experimental example and the comparative example sample zinc powder amount of coming off.The zinc powder amount of coming off of experimental example all is significantly less than comparative example.Table 2 according to following standard to anti-performance evaluation: the ◎ that comes off of the coating of experimental example and each sample of comparative example good especially (the zinc powder amount of coming off :≤0.0100mg); Zero good (the zinc powder amount of coming off: between 0.0100～0.0300mg); △ bad a little (the zinc powder amount of coming off: between 0.0300～0.0360mg); * bad (the zinc powder amount of coming off: 〉=0.0440mg).
(3) the anti-zoned performance of coating
The anti-zoned performance test of coating is finished on U.S. CE TR UMT-2 type multifunction friction wear trier, and anti-zoned performance test is used scratch test device part.The pressure head of scratch test is the spade diamond, and the head radius-of-curvature is that 800 μ m scratch tests adopt the linear loading regime that increases, and selects for use loaded load to increase to 2N from 0.5N.The cut profile pattern after Ambios XP2 type contourgraph is measured each coating test is used in the test back.Fig. 4 shows in experimental example and the comparative example coating cut mid-way and locates typical profile measurement result.As seen, the coating scratch depth in the experimental example all is significantly less than comparative example.Table 2 is estimated the anti-zoned performance of coating of experimental example and each sample of comparative example according to following standard:
Zero good (scratch depth≤7.00 μ m)
△ bad a little (scratch depth is between 7.00～8.00 μ m)
* bad (scratch depth 〉=8.00 μ m)
(4) cladding wearability energy
Cladding wearability can be tested on U.S. CE TR UMT-2 type multifunction friction wear trier reciprocating sliding friction test platform and finish.Last sample (to the mill sample) is the stainless steel ball of diameter 10mm, and following sample is a hot-dip galvanizing sheet steel.Reciprocating sliding friction wearing test parameter is: normal load: F
n=2N, shift reciprocately amplitude: D=2mm, speed of relative movement: V=2mm/s, working time: t=1000s, cycle index: N=500.The polishing scratch profile pattern after Ambios XP2 type contourgraph is measured each coating test is used in the test back.Table 2 has been listed the average friction coefficient after experimental example and 100 the friction circulations of each sample of comparative example, and according to following standard the polishing scratch profile is estimated:
Zero good (the polishing scratch degree of depth≤8.00 μ m)
△ bad a little (the polishing scratch degree of depth is between 8.00～10.00 μ m)
* bad (the polishing scratch degree of depth 〉=10.00 μ m)
(5) adherence of coating can comprehensive evaluation
Table 2 can carry out comprehensive evaluation according to following standard to the adherence of coating of experimental example and each sample of comparative example:
Zero good (good zero counting is more than 2, and bad a little △ has only 1 at most)
△ bad a little (good zero counting has 1, and bad a little △ counting has 2)
* bad (bad * counting more than 2 or bad a little △ counting have 2, bad * counting has 1)
Table 2 hot-dip galvanizing sheet steel performance
By the evaluation result of table 2 as can be known, the present invention brings up to 70～90% with the rate of cooling of hot dip galvanizing process process light plate, the hot-dip galvanizing sheet steel (experimental example) that obtains under the constant condition of other technologies is compared with steel plate (comparative example) in the past, the anti-performance that comes off of coating, anti-zoned performance and wear resisting property significantly improve, and the adhesion property of coating and base material obviously improves.
Claims (4)
1. manufacturing method of hot dip galvanizing steel plate, steel plate carries out the pot galvanize operation after pickling, annealing, it is characterized in that: in the pot galvanize operating process, temperature was 455～465 ℃ when steel plate entered plating bath, the plating bath temperature is 450～460 ℃ in the zinc pot, Fe content＜0.03% in the plating bath, Al content 0.16～0.18% in the plating bath, unit speed 110～120m/min; Steel plate cools off rate of cooling 70～90% with air-cooled the pressure after going out the zinc pot.
2. manufacturing method of hot dip galvanizing steel plate according to claim 1, it is characterized in that: described steel plate by weight percentage, contain C:0.03～0.07%, Mn:0.01～0.03%, Si:0.19～0.30%, P:0.006～0.019%, S:0.009～0.020%, Al:0.02～0.07%, all the other are Fe and trace impurity.
3. manufacturing method of hot dip galvanizing steel plate according to claim 1 is characterized in that: described steel plate thickness is 0.8mm.
4. manufacturing method of hot dip galvanizing steel plate according to claim 1 is characterized in that: zinc-plated back zinc layer weight is 180～195g/m
2, the zinc laminar surface is through SiO
2Passivation Treatment.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810303233A CN100591793C (en) | 2008-07-30 | 2008-07-30 | Manufacturing method of hot dip galvanizing steel plate |
| JP2011520310A JP5520297B2 (en) | 2008-07-30 | 2009-07-30 | Method for producing hot-dip galvanized steel sheet |
| US13/003,619 US20110256420A1 (en) | 2008-07-30 | 2009-07-30 | Hot-dip galvanized steel plate and production method thereof |
| PCT/CN2009/073004 WO2010012235A1 (en) | 2008-07-30 | 2009-07-30 | Hot-galvanized steel sheet and production process thereof |
| DE112009001879.3T DE112009001879B4 (en) | 2008-07-30 | 2009-07-30 | Production process for a hot-dip galvanized steel plate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200810303233A CN100591793C (en) | 2008-07-30 | 2008-07-30 | Manufacturing method of hot dip galvanizing steel plate |
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| CN101323940A true CN101323940A (en) | 2008-12-17 |
| CN100591793C CN100591793C (en) | 2010-02-24 |
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| CN200810303233A Expired - Fee Related CN100591793C (en) | 2008-07-30 | 2008-07-30 | Manufacturing method of hot dip galvanizing steel plate |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010012235A1 (en) * | 2008-07-30 | 2010-02-04 | 攀枝花新钢钒股份有限公司 | Hot-galvanized steel sheet and production process thereof |
| CN102888578A (en) * | 2011-07-19 | 2013-01-23 | 宝山钢铁股份有限公司 | Method for producing hot-dip galvanized steel plate having excellent surface friction characteristics |
| CN104126024A (en) * | 2011-12-26 | 2014-10-29 | Posco公司 | Electromagnetic wiping device, steel sheet wiping device including same and method for manufacturing steel sheet |
| CN104968824A (en) * | 2012-12-27 | 2015-10-07 | 杰富意钢铁株式会社 | Hot-dip galvanized steel sheet |
| CN105951096A (en) * | 2016-05-06 | 2016-09-21 | 黄山中链科技有限公司 | Vacuum ion vanadium plating process for engine chain |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3318385B2 (en) * | 1993-03-04 | 2002-08-26 | 川崎製鉄株式会社 | Alloyed hot-dip galvanized steel sheet with excellent press workability and plating resistance |
| KR100705243B1 (en) * | 2005-07-20 | 2007-04-10 | 현대하이스코 주식회사 | Hot dip galvanized steel sheets of TRIP steels which have good adhesion property and excellent formability and the method of developing those steels |
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2008
- 2008-07-30 CN CN200810303233A patent/CN100591793C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010012235A1 (en) * | 2008-07-30 | 2010-02-04 | 攀枝花新钢钒股份有限公司 | Hot-galvanized steel sheet and production process thereof |
| CN102888578A (en) * | 2011-07-19 | 2013-01-23 | 宝山钢铁股份有限公司 | Method for producing hot-dip galvanized steel plate having excellent surface friction characteristics |
| CN102888578B (en) * | 2011-07-19 | 2014-12-24 | 宝山钢铁股份有限公司 | Method for producing hot-dip galvanized steel plate having excellent surface friction characteristics |
| CN104126024A (en) * | 2011-12-26 | 2014-10-29 | Posco公司 | Electromagnetic wiping device, steel sheet wiping device including same and method for manufacturing steel sheet |
| CN104126024B (en) * | 2011-12-26 | 2017-03-29 | Posco公司 | Electromagnetism wiping device, including the manufacture method of its electroplating steel plate wiping device and electroplating steel plate |
| US9689063B2 (en) | 2011-12-26 | 2017-06-27 | Posco | Electromagnetic wiping device, plated steel sheet wiping apparatus including same, and method for manufacturing plated steel sheet |
| CN104968824A (en) * | 2012-12-27 | 2015-10-07 | 杰富意钢铁株式会社 | Hot-dip galvanized steel sheet |
| CN104968824B (en) * | 2012-12-27 | 2017-05-17 | 杰富意钢铁株式会社 | Hot-dip galvanized steel sheet |
| CN105951096A (en) * | 2016-05-06 | 2016-09-21 | 黄山中链科技有限公司 | Vacuum ion vanadium plating process for engine chain |
| CN105951096B (en) * | 2016-05-06 | 2018-08-21 | 黄山中链科技有限公司 | A kind of engine chain vacuum ion plating vanadium technique |
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| CN100591793C (en) | 2010-02-24 |
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Address after: 611731 No. 1 Tianlong Road, hi tech West District, Sichuan, Chengdu Co-patentee after: Pangang Group Panzhihua Iron & Steel Research Institute Co., Ltd. Patentee after: Pangang Group Institute Co., Ltd. Co-patentee after: Pangang Group Steel Vanadium & Titanium Co., Ltd. Address before: 611731 No. 1 Tianlong Road, hi tech West District, Sichuan, Chengdu Co-patentee before: Pangang Group Panzhihua Iron & Steel Research Institute Co., Ltd. Patentee before: Pangang Group Institute Co., Ltd. Co-patentee before: Panzhihua New Steel & Vanadium Co., Ltd. |
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