CN101554702A - Method for machining hot-dipped galvanized steel sheet having two faces with different types of spangles - Google Patents
Method for machining hot-dipped galvanized steel sheet having two faces with different types of spangles Download PDFInfo
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- CN101554702A CN101554702A CNA2009100265054A CN200910026505A CN101554702A CN 101554702 A CN101554702 A CN 101554702A CN A2009100265054 A CNA2009100265054 A CN A2009100265054A CN 200910026505 A CN200910026505 A CN 200910026505A CN 101554702 A CN101554702 A CN 101554702A
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Abstract
The invention relates to a method for machining a hot-dipped galvanized steel sheet having two faces with different types of spangles, belonging to the technical field for machining hot-dipped galvanized steel sheet. The method comprises the steps of rolling a base plate, washing, annealing, zinc boiler galvanizing and skin rolling. The method is characterized in that the surfaces of an upper working roll and a lower working roll for rolling the base plate in the step of rolling are processed in a way of roughening so that the surfaces of the upper working roll and the lower working roll are respectively form a roughened surface structure; the roughened surface structure on the upper working roll is different from the roughened surface structure on the lower working roll; when the upper working roll and the lower working roll with the roughened surface structures roll the base plate, the two faces of the base plate are respectively form the roughened surface structure of the base plate, wherein, the roughened surface structure of the base plate formed at one face of the base plate is different from the roughened surface structure of the base plate formed at the other face of the base plate. The method is good for saving zinc raw materials and reducing cost for manufacturers and is helpful for users to elect according to use and request.
Description
Technical field
The invention belongs to the hot-dip galvanized steel sheet processing technique field, be specifically related to the processing method that a kind of two sides has the hot-dip galvanized steel sheet of dissimilar zinc flowers.
Background technology
The reason known as industry, the form of expression on two surfaces of the plate body of hot-dip galvanized steel sheet main but non-be limited to following two classes are arranged, a class is the hot dip galvanizing plate that two surfaces of plate body all have the zinc flower; Another kind of have the not zinc-plated hot-dip galvanized steel sheet of zinc flower one side for the one side of plate body.The former is widely used in industries such as household electrical appliances, building, solar energy, automobile and decoration, and the occasion that the latter is mainly used in the no decoration requirement or claims sight to require is for example processed various containers or the like.The former is divided into two kinds again, and a kind of is that two surfaces of plate body all have big zinc flower; Another kind is that two surfaces of plate body all have small zinc flower.Before a kind of situation be the zinc that give on the plate body two sides is spent one big all big, a kind of situation in back be the zinc that give on the plate body two sides is spent one little all little.Hence one can see that, and on same plate body, the zinc flower on two surfaces of plate body is identical, does not have the phenomenon of favouring one and slighting the other or claiming to treat with a certain discrimination.That is to say not exist one side to be big zinc flower, and another side is the phenomenon of small zinc flower.Yet, the applicant thinks, industry production two sides zinc for a long time spends identical hot-dip galvanized steel sheet to have certain blindness, especially because this blindness has also caused the production firm of hot-dip galvanized steel sheet and the dual puzzlement of using the industry of hot-dip galvanized steel sheet.Puzzlement to production firm is: cause the inaction of coating material waste and production cost to increase, because when hot dip galvanizing plate is put to the final use of industry, objectively there is the situation that the plate body two sides is distinguished to some extent, be embodied in wherein one side is required high, and to another side require relatively low.Require height to be meant and require the surface-brightening cleaning as appearance, surface smoothing free from admixture and micro-cracks, it is good to be beneficial to spray paint back effect and antiseptic property, heat conductivility is good, there are very strong adhesive force and fineness in the surface, such as outer plate surface as the Automobile Plate face, the outer plate surface of solar water heater or the outer plate surface of household electrical appliances; Require low being meant simple protection against corrosion to be not easy to break, can simply weld with punching press just passablely, all the other do not do requirement, such as the inner plate surface of Automobile Plate face, and the inner plate surface of solar water heater or the inner plate surface of household electrical appliances.Obviously, the hot-dip galvanized steel sheet of the identical zinc flower in production two sides can make the consumption of zinc increase, and improves production cost; The puzzlement of using the merchant is: application cost increases, because the two sides of same steel plate is not had the leeway of just selecting according to purposes, generally, does not need all to do very goodly to the zinc flower on the two sides of plate body.For example, the applicant is mentioned in the above when using such as household electrical appliances, building, solar energy and automobile and other industries, does not need the zinc flower on the two sides of hot-dip galvanized steel sheet to reach the requirement with same effect, gets final product but grasp the degree of leaving some things undone doing some things.
The applicant also thinks, up to now, why both do not witnessed the technology enlightenment that the two sides has the processing method of the colored hot-dip galvanized steel sheet of dissimilar zinc in the literature, do not hear of the corresponding report of industry success yet, that be because the production firm that is engaged in hot-dip galvanized steel sheet be subjected to the traditional Design Thinking and the mode of production to influence the solid root of the base of a fruit dark, be in fear of contrary many.In view of this, be necessary to be broken through, technical scheme described below produces under this background.
Summary of the invention
Task of the present invention is to provide a kind of production cost and raw material that both helped saving the producer, helps selectivity of using and the two sides that reduces application cost to have the processing method of the hot-dip galvanized steel sheet of dissimilar zinc flowers again.
Task of the present invention is finished like this, a kind of two sides has the processing method of the hot-dip galvanized steel sheet of dissimilar zinc flowers, comprise rolling to substrate, clean, annealing, zinc-plated and the smooth treatment step of zinc pot, characteristics are: to the rolling substrate that is used in the described rolling step, the surface of bottom working roll is carried out texturing and is handled, make, the surface of bottom working roll forms the texturing surface texture respectively, wherein, texturing surface texture on the top working roll is different with the texturing surface texture on the bottom working roll, be formed with the texturing surface texture on, bottom working roll is to substrate when rolling, make the two sides of substrate form substrate texturing surface texture respectively, wherein, the formed substrate texturing surface texture of substrate one side is different with the formed substrate texturing of substrate another side surface texture.
In a specific embodiment of the present invention, described texturing surface texture comprises the spacing between roughness, boss number, boss size and the adjacent lands, wherein, the spacing between the roughness on the top working roll, boss number, boss size and the adjacent lands be with bottom working roll on roughness, boss number, boss size and adjacent lands between spacing different.
In another specific embodiment of the present invention, the roughness on the described top working roll is 1.5-2.8 μ m, and the boss number is 15-25/mm
2, the boss diameter is 150-250 μ m, the spacing between the adjacent lands is 20-70 μ m.
In another specific embodiment of the present invention, the roughness on the described bottom working roll is 0.6-1.2 μ m, and the boss number is 5-10/mm
2, the boss size is 50-150 μ m, the spacing between the adjacent lands is 150-350 μ m.
In another specific embodiment of the present invention, described texturing is treated to CO
2Laser roughening is handled.
Go back in the specific embodiment of the present invention, the zinc-plated zinc pot temperature of described zinc pot is 450-460 ℃, the chemical composition and the mass percent of the plating bath in the zinc pot are: the aluminium of 0.16-0.20%, the lead of 0.005-0.008%,＜0.03% iron, the antimony of 0.05-0.07%, all the other are zinc.
More of the present invention and in specific embodiment, the thickness of described substrate is 0.22-1.5mm.
Technical scheme provided by the present invention is because to being used for rolling substrate, the texturing processing has been carried out on the surface of bottom working roll, make, the surface of bottom working roll forms different each other texturing surface texture respectively, therefore, when be formed with the texturing surface texture on, bottom working roll is to substrate when rolling, can make the two sides of substrate inherit described texturing surface texture and form substrate texturing surface texture, and, because it is last, texturing surface texture on the bottom working roll is different, therefore the substrate texturing surface texture on substrate two sides is also different, in the cleaning after rolling, annealing, after the zinc-plated and smooth processing of zinc pot, must arrive the hot-dip galvanized steel sheet that the two sides has dissimilar zinc flowers, reduced cost thereby both helped production firm's saving zinc raw material, and helped the user to select again according to purposes and requirement.
Description of drawings
Fig. 1 is the process flow diagram of processing method of the present invention.
Fig. 2 for the upper and lower working roll of processing method of the present invention to substrate roll forming schematic diagram.
Fig. 3 has the cross section enlarged diagram of the hot-dip galvanized steel sheet of dissimilar zinc flowers for resulting two sides after Fig. 2 is rolling and after cleaning, annealing, the zinc-plated and smooth processing of zinc pot.
Fig. 4 is the enlarged drawing that the zinc on the two sides of hot dip galvanizing plate is spent.
The two sides that Fig. 5 obtains for the inventive method has an application examples schematic diagram of the hot-dip galvanized steel sheet of dissimilar zinc flowers.
The specific embodiment
Embodiment 1:
Ask for an interview Fig. 1 to Fig. 4.
The inventive method comprise to substrate 7 rolling, adopt that rinse bath 9 cleans, annealing furnace 10 annealing, zinc-plated and use the 12 smooth processing of polishing machine by zinc pot 11, have the hot-dip galvanized steel sheet that dissimilar zinc is spent thereby must arrive the two sides.Technical essential as the inventive method: texturing is carried out on the surface of the upper and lower working roll 5,6 (Fig. 2 shows) of the 4-roller reversible cold rolling mill that is used for rolling substrate 7 handled, make the surface of upper and lower working roll 5,6 respectively form the texturing surface texture, specifically: use CO
2The laser roughening technology is carried out texturing and is handled, preferred texturing treatment facility is the HGL-HAT3500 large-scale roller laser roughening complete set of equipments that the Chinese Wuhan City, Hubei Province of employing Huagong Laser Engineering Co Ltd, Wuhan produces, and it is the pulse CO that adopts high-energy, high repetition frequency
2Negative out of focus after laser beam focuses on shines roller surface enforcement preheating, reinforcement and texturing, being specially focus point after the focusing incides roller surface and forms small molten bath, simultaneously small molten bath is imposed on the assist gas of setting pressure and flow, make fused mass in the molten bath by specify requirements to be stacked into melt pool edge formation arc cam (peak value) as far as possible by the side-blown device.These preheating zones, Wei Keng, boss cool off rapidly under the effect of heat conduction at roll and form the hardness stiffened region.In the thin plate rolling process, the boss on the roller surface forms some strain hardening particles (little hole) again on the plate face then, to form the laser roughening plate.This novel surface structure is under the situation that does not reduce the original material surface toughness, by countless small uniform strengthening points steel strip surface is carried out tailor's cushion, thereby realizes the surface texture of coupling hardness with softness on roller, plate surface, and its used laser working medium is CO
2The zinc that the texturing effect is got the galvanized steel sheet surface of acquisition according to the phase spends size to be determined.Roughness for top working roll 5 surfaces is controlled to be 2.6 μ m, and the boss number on top working roll 5 surfaces is decided to be 25/mm
2, the boss diameter on top working roll 5 surfaces is controlled to be 240 μ m, and the centre-to-centre spacing of adjacent lands is 68 μ m.
Roughness for bottom working roll 6 surfaces is controlled to be 1.2 μ m, and the boss number on bottom working roll 6 surfaces is decided to be 10/mm
2, the boss diameter on bottom working roll 6 surfaces is controlled to be 145 μ m, and the centre-to-centre spacing of adjacent lands is 350 μ m.
When thickness be 1.3mm substrate 7 between the upper and lower working roll 5,6 through out-of-date, the upper and lower surface of substrate 7 formed or claim to inherit identical pattern with upper and lower working roll 5,6, that is, at the two sides of substrate 7 formation substrate texturing surface texture.Specifically by shown in Figure 4, because the texturing surface texture on the surface of upper and lower working roll 5,6 is different, therefore, upper and lower surperficial 3,4 substrate texturing surface texture of substrate 7 is also different.In the present embodiment, the roughness of the upper surface 3 of substrate 7 is 1.69 μ m, and the pit number is 25/mm
2, the diameter D of pit is 238 μ m, the pit centres distance is that average headway Sm is 70 μ m; The roughness of the lower surface 4 of substrate 7 is 0.77 μ m, and the pit number is 10/mm
2, pit diameter D is 145 μ m, the pit centres distance is that average headway Sm is 349 μ m.
As shown in Figure 1, substrate 7 is expert at upper and lower working roll 5,6 after rinse bath 9 cleans, annealing furnace 10 annealing, zinc pot 11 are zinc-plated and be the hot-dip galvanized steel sheet that the two sides has dissimilar zinc flowers after the 12 smooth processing of polishing machine, abbreviates galvanized steel plain sheet 8 as.The zinc on galvanized steel plain sheet 8 upper and lower surfaces flower type is different as shown in Figure 3.
Aforesaid smooth treatment process is mainly finished by the polishing machine, it is one of important procedure on the band steel hot galvanizing line, generally goes out the zinc pot at galvanized sheet and promptly enter smooth operation after cooling, and S shape jockey pulley is arranged before and after the polishing machine, be used for the galvanized sheet tension, commonly used is four burnishing-in complete machines.Its operation principle and 4-roller cold rolling mill are about the same, and different is, and its roll-force is smaller and irreversible.The front and back jockey pulley makes galvanized sheet produce bigger tension force, meanwhile two backing rolls up and down of polishing machine apply roll-force to working roll, so two working rolls just apply roll-force to galvanized sheet up and down, under the tension of tension force and rolling compression acting in conjunction, galvanized sheet just produces plastic elongation, and variation has taken place the thickness of gateway, but this ratio of elongation is less, varied in thickness is also smaller, almost can not measure, and it just flattens the place of the original surface irregularity of galvanized sheet.Galvanized sheet has bigger effect through after the smooth operation to surperficial quality improvement and performance raising.
The temperature of aforesaid zinc-plated zinc pot 11 is 455 ℃, and the chemical composition and the quality % of the plating bath in the zinc pot 11 are: 0.20% aluminium, and 0.006% lead,＜0.03% iron, 0.05% antimony, all the other are zinc.
By present embodiment as can be known, the texturing surface texture of upper and lower working roll 5,6 shift or claim to copy to substrate 7 upper and lower surperficial 3,4 and on upper and lower surperficial 3,4, form in the process of substrate texturing structure, generally about 55-75%, all the other as the distance between boss number, boss size and the adjacent lands much at one for the duplicating rate of roughness.
Embodiment 2:
Ask for an interview Fig. 1 to Fig. 4.
The inventive method comprise to substrate 7 rolling, adopt that rinse bath 7 cleans, annealing furnace 10 annealing, by the 11 zinc-plated and polishing machine 12 smooth processing of zinc pot, have the colored hot-dip galvanized steel sheet of dissimilar zinc thereby must arrive the two sides.In the present embodiment, be controlled to be 2.1 μ m for the roughness on top working roll 5 surfaces, the boss number on top working roll 5 surfaces is decided to be 20/mm
2, the boss diameter on top working roll 5 surfaces is controlled to be 200 μ m, and the centre-to-centre spacing of adjacent lands is 45 μ m; Roughness for bottom working roll 6 surfaces is controlled to be 0.9 μ m, and the boss number on bottom working roll 6 surfaces is decided to be 8/mm
2, the boss diameter on bottom working roll 6 surfaces is controlled to be 100 μ m, and the centre-to-centre spacing of adjacent lands is 250 μ m; The thickness of substrate 7 changes 0.86mm into.
Specifically by shown in Figure 4, because the texturing surface texture on the surface of upper and lower working roll 5,6 is different, so upper and lower surperficial 3,4 substrate texturing surface texture of substrate 7 is different.In the present embodiment, the roughness of upper surface 3 is 1.37 μ m, and the pit number is 20/mm
2, the diameter D of pit is 195 μ m, the pit centres distance is that average headway Sm is 47 μ m; The roughness of the lower surface of substrate 7 is 0.59 μ m, and the pit number is 8/mm
2, pit diameter D is 101 μ m, the pit centres distance is that average headway Sm is 249 μ m.
As shown in Figure 1, substrate 7 is expert at upper and lower working roll 5,6 after rinse bath 9 cleans, annealing furnace 10 annealing, zinc pot 11 are zinc-plated and polishing machine 12 is the hot-dip galvanized steel sheet that the two sides has dissimilar zinc flowers after smooth, abbreviates galvanized steel plain sheet 8 as.The zinc on galvanized steel plain sheet 8 upper and lower surfaces flower type is different as shown in Figure 3.
The temperature of the zinc pot 11 that aforesaid zinc pot 11 is zinc-plated is 460 ℃, and the chemical composition and the quality % of the plating bath in the zinc pot 11 are: 0.18% aluminium, and 0.08% lead,＜0.03% iron, 0.06% antimony, all the other are zinc.
The content of being described in the present embodiment is all with the description to embodiment 1.
Embodiment 3:
Ask for an interview Fig. 1 to Fig. 4.
The inventive method comprise to substrate 7 rolling, adopt that rinse bath 7 cleans, annealing furnace 10 annealing, by the 11 zinc-plated and polishing machine 12 smooth processing of zinc pot, have the colored hot-dip galvanized steel sheet of dissimilar zinc thereby must arrive the two sides.In the present embodiment, be controlled to be 1.5 μ m for the roughness on top working roll 5 surfaces, the boss number on top working roll 5 surfaces is decided to be 15/mm
2, the boss diameter on top working roll 5 surfaces is controlled to be 155 μ m, and the centre-to-centre spacing of adjacent lands is 20 μ m; Roughness for bottom working roll 6 surfaces is controlled to be 0.6 μ m, and the boss number on bottom working roll 6 surfaces is decided to be 5/mm
2, the boss diameter on bottom working roll 6 surfaces is controlled to be 52 μ m, and the centre-to-centre spacing of adjacent lands is 150 μ m; The thickness of substrate 7 changes 0.23mm into.
Specifically by shown in Figure 4, because the texturing surface texture on the surface of upper and lower working roll 5,6 is different, so upper and lower surperficial 3,4 substrate texturing surface texture of substrate 7 is different.In the present embodiment, the roughness of upper surface 3 is 1.02 μ m, and the pit number is 15/mm
2, the diameter D of pit is 155 μ m, the pit centres distance is that average headway Sm is 21 μ m; The roughness of the lower surface of substrate 7 is 0.41 μ m, and the pit number is 5/mm
2, pit diameter D is 52 μ m, the pit centres distance is that average headway Sm is 150 μ m.
As shown in Figure 1, substrate 7 is expert at upper and lower working roll 5,6 after rinse bath 9 cleans, annealing furnace 10 annealing, zinc pot 11 are zinc-plated and polishing machine 12 is the hot-dip galvanized steel sheet that the two sides has dissimilar zinc flowers after smooth, abbreviates galvanized steel plain sheet 8 as.The zinc on galvanized steel plain sheet 8 upper and lower surfaces flower type is different as shown in Figure 3.
The temperature of the zinc pot 11 that aforesaid zinc pot 11 is zinc-plated is 450 ℃, and the chemical composition and the quality % of the plating bath in the zinc pot 11 are: 0.16% aluminium, and 0.005% lead,＜0.03% iron, 0.07% antimony, all the other are zinc.
The content of being described in the present embodiment is all with the description to embodiment 1.
Application examples:
Ask for an interview Fig. 5, for by embodiment 1 resulting galvanized steel plain sheet 8 in user mode to outward first surface 1 for having the face of small zinc flower, be that the zinc flower diameter is 2.02mm, and towards interior second surface 2 for having the face of big zinc flower, be that the zinc flower diameter is 4.16mm, first surface 1 can guarantee beautiful appearance and (spraying) effect of spraying paint, and second surface 2 is beneficial to inner simple welding and anticorrosion.By the application scenarios of embodiment 2 and embodiment 3 resulting galvanized steel plain sheets 8 with above-mentioned.
In sum, the inventive method has been filled up and has been lacked the blank that the two sides has the hot-dip galvanized steel sheet of dissimilar zinc flowers in the market, can not only economize in raw materials for production firm on (zinc) and reduce cost, and can also for the user tackle different purposes, different require to provide select to use the reduction application cost.
Claims (7)
1, a kind of two sides has the processing method of the hot-dip galvanized steel sheet of dissimilar zinc flowers, comprise rolling to substrate, clean, annealing, zinc-plated and the smooth treatment step of zinc pot, it is characterized in that: to the rolling substrate that is used in the described rolling step, the surface of bottom working roll is carried out texturing and is handled, make, the surface of bottom working roll forms the texturing surface texture respectively, wherein, texturing surface texture on the top working roll is different with the texturing surface texture on the bottom working roll, be formed with the texturing surface texture on, bottom working roll is to substrate when rolling, make the two sides of substrate form substrate texturing surface texture respectively, wherein, the formed substrate texturing surface texture of substrate one side is different with the formed substrate texturing of substrate another side surface texture.
2, two sides according to claim 1 has the processing method of the hot-dip galvanized steel sheet of dissimilar zinc flowers, it is characterized in that described texturing surface texture comprises the spacing between roughness, boss number, boss size and the adjacent lands, wherein, the spacing between the roughness on the top working roll, boss number, boss size and the adjacent lands be with bottom working roll on roughness, boss number, boss size and adjacent lands between spacing different.
3, two sides according to claim 2 has the processing method of the hot-dip galvanized steel sheet of dissimilar zinc flowers, it is characterized in that the roughness on the described top working roll is 1.5-2.8 μ m, and the boss number is 15-25/mm
2, the boss diameter is 150-250 μ m, the spacing between the adjacent lands is 20-70 μ m.
4, two sides according to claim 2 has the processing method of the hot-dip galvanized steel sheet of dissimilar zinc flowers, it is characterized in that the roughness on the described bottom working roll is 0.6-1.2 μ m, and the boss number is 5-10/mm
2, the boss size is 50-150 μ m, the spacing between the adjacent lands is 150-350 μ m.
5, two sides according to claim 1 has the processing method of the hot-dip galvanized steel sheet of dissimilar zinc flowers, it is characterized in that described texturing is treated to CO
2Laser roughening is handled.
6, two sides according to claim 1 has the processing method of the hot-dip galvanized steel sheet of dissimilar zinc flowers, it is characterized in that the zinc-plated zinc pot temperature of described zinc pot is 450-460 ℃, the chemical composition and the mass percent of the plating bath in the zinc pot are: the aluminium of 0.16-0.20%, the lead of 0.005-0.008%,＜0.03% iron, the antimony of 0.05-0.07%, all the other are zinc.
7, two sides according to claim 1 has the processing method of the hot-dip galvanized steel sheet of dissimilar zinc flowers, and the thickness that it is characterized in that described substrate is 0.22-1.5mm.
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| CN102764789A (en) * | 2012-07-30 | 2012-11-07 | 首钢总公司 | Method for producing outer plate of automobile |
| CN103506848A (en) * | 2013-09-10 | 2014-01-15 | 苏州安洁科技股份有限公司 | Combined device for precision machining |
| CN103769431A (en) * | 2013-12-30 | 2014-05-07 | 首钢总公司 | Production method for automobile exterior board |
| CN105312320A (en) * | 2015-08-04 | 2016-02-10 | 四川金发科技发展有限公司 | Rolling device and method for increasing surface roughness of steel strip through rolling device |
| CN108559936A (en) * | 2018-04-23 | 2018-09-21 | 黄石山力科技股份有限公司 | Utilize the method and galvanized sheet of the substrate production galvanized sheet of patterned |
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2009
- 2009-05-11 CN CN2009100265054A patent/CN101554702B/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102764789A (en) * | 2012-07-30 | 2012-11-07 | 首钢总公司 | Method for producing outer plate of automobile |
| CN103506848A (en) * | 2013-09-10 | 2014-01-15 | 苏州安洁科技股份有限公司 | Combined device for precision machining |
| CN103769431A (en) * | 2013-12-30 | 2014-05-07 | 首钢总公司 | Production method for automobile exterior board |
| CN103769431B (en) * | 2013-12-30 | 2015-11-25 | 首钢总公司 | A kind of production method of automobile exterior panel |
| CN105312320A (en) * | 2015-08-04 | 2016-02-10 | 四川金发科技发展有限公司 | Rolling device and method for increasing surface roughness of steel strip through rolling device |
| CN105312320B (en) * | 2015-08-04 | 2017-10-27 | 四川金发科技发展有限公司 | Roll milling apparatus and the method with roll milling apparatus increase steel strip surface roughness |
| CN108559936A (en) * | 2018-04-23 | 2018-09-21 | 黄石山力科技股份有限公司 | Utilize the method and galvanized sheet of the substrate production galvanized sheet of patterned |
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| CN101554702B (en) | 2010-06-30 |
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