CN106350818A - Surface-treated steel plate with micro-grooves formed thereon and having improved workability and method for producing same - Google Patents
Surface-treated steel plate with micro-grooves formed thereon and having improved workability and method for producing same Download PDFInfo
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- CN106350818A CN106350818A CN201610561850.8A CN201610561850A CN106350818A CN 106350818 A CN106350818 A CN 106350818A CN 201610561850 A CN201610561850 A CN 201610561850A CN 106350818 A CN106350818 A CN 106350818A
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- microflute
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- C—CHEMISTRY; METALLURGY
- C23—COATING 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
- C23C—COATING 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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
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Abstract
The invention relates to a surface-treated steel plate with micro-grooves formed thereon and having improved workability and a method for producing the same. A pattern with micro-grooves serving as oil grooves is formed on coating layer coated on the surface-treated steel plate, thereby reducing the friction coefficient of the surface of the steel plate and improving the workability.
Description
Technical field
The present invention relates to a kind of form microflute and surface treated steel plate that processability is improved and its manufacture method.
Background technology
In recent years, with the progress of technology, the requirement more and more higher to more excellent product for the consumer, with automotive material, family
The various uses such as electric product, construction material are using steel plate.Therefore, developing always using galvanized steel plain sheet, plate golding zincio alloy
Steel plate, aludip, based alloy of aluminizing steel plate, cold-rolled steel sheet and hot rolled steel plate etc. are producing the product with excellent processability
Technology.
Improve although developing the method reducing the coefficient of friction of steel plate by forming oil groove in surface of steel plate accordingly
Technology of processability etc., but if be unsatisfactory for being enclosed in the amount of the oil groove of steel plate, shape, number, depth, diameter etc. various because
Element, then cannot play the effect of oil groove it may occur however that oil can drain to the situation of outside.
[prior art literature]
[patent documentation]
US publication the 2014-0255724th
Content of the invention
Technical problem to be solved
It is an object of the invention to provide a kind of form microflute and surface treated steel plate that processability is improved and its system
Make method.
Technical scheme
As the means for solving the above problems, a kind of surface treated steel plate that the present invention can provide, described surface
Process steel plate to include:
Steel plate；And
Coating, it is formed at the one or both sides of described steel plate,
Described coating has a following structure: it is less than 50 μm micro- that the opposing face in the face connecting with steel plate forms average diameter
The pattern of groove,
Microflute meets following formulas 1,
[formula 1]
1.2≤s/d≤5
In formula 1, it is micro- be formed at the position nearest with described first microflute second that d represents arbitrary first microflute
The average diameter of groove, s represents the distance between the center of the first microflute and center of the second microflute.
As another means for solving the above problems, the present invention can provide a kind of manufacturer of surface treated steel plate
Method, comprising: the step of the one or both sides formation coating in steel plate；Mechanically form average diameter in coating surface
For the step of the pattern of less than 50 μm of microflute, microflute meets formula 1 below,
[formula 1]
1.2≤s/d≤5
In formula 1, it is micro- be formed at the position nearest with described first microflute second that d represents arbitrary first microflute
The average diameter of groove, s represents the distance between the center of the first microflute and center of the second microflute.
Beneficial effect
The surface treated steel plate of the present invention, the coating surface on being plated on steel plate forms the pattern with microflute, thus
The coefficient of friction of surface of steel plate can be reduced, improve processability.
Brief description
Fig. 1 to Fig. 3 is the schematic diagram of the surface treated steel plate illustrating one embodiment of the present of invention respectively.
Fig. 4 is the schematic diagram of the horizontal plane structure of the surface treated steel plate illustrating one embodiment of the present of invention.
Fig. 5 is the schematic diagram of the horizontal plane structure of the surface treated steel plate illustrating one embodiment of the present of invention.
Brief description labelling
11st, 12: steel plate
21st, 22: coating
31st, 32: microflute
42: be formed with cloudy quarter and the positive pattern carved at certain intervals
Specific embodiment
Various changes can be carried out to the present invention, and can have various embodiments, illustrate particular implementation in the accompanying drawings
Example, and this is described in detail.
However, it should be understood that and be not intended to limit the invention to particular implementation for this, including the think of in the present invention
Want with technical scope in had altered, equivalent or even substitute are included in the present invention.
In the present invention, " include " or the term such as " having " is it will be appreciated that be intended merely to point out the spy described in description
Levy, numeral, step, operation, structural agent, part or combinations thereof and exist, exclusion in advance or with
On further feature, numeral, step, operation, structural agent, there is a possibility that or additional of part or combinations thereof.
And, the accompanying drawing for the present invention it is thus understood that, for convenience of description, illustrated attached in the way of zooming in or out
Figure.
Below, the present invention is described in detail.
The present invention relates to a kind of form microflute and surface treated steel plate that processability is improved and its manufacture method, as
One example of described surface treated steel plate it is provided that a kind of surface treated steel plate, comprising:
Steel plate；And
Coating, it is formed at the one or both sides of described steel plate,
Described coating has a following structure: it is less than 50 μm micro- that the opposing face in the face connecting with steel plate forms average diameter
The pattern of groove,
Microflute meets formula 1 below,
[formula 1]
1.2≤s/d≤5
In formula 1, it is micro- be formed at the position nearest with described first microflute second that d represents arbitrary first microflute
The average diameter of groove, s represents the distance between the center of the first microflute and center of the second microflute.
The species of described steel plate is not specially limited, described steel plate can be selected from cold-rolled steel sheet；Galvanized steel plain sheet；Zinc-base electricity
Plating steel plate；Hot-dip galvanized steel sheet；Aludip；Comprise in coating cobalt, molybdenum, tungsten, nickel, titanium, aluminum, manganese, ferrum, magnesium, stannum, copper or they
The impurity of mixture or dissimilar metal coated steel sheet；Add silicon, copper, magnesium, ferrum, manganese, the aluminum of titanium, zinc or their mixture
Alloy sheets；It is coated with phosphatic galvanized steel plain sheet；Cold-rolled steel sheet；And hot rolled steel plate.And, the thickness of steel plate is not done especially
Limit, its thickness can be adjusted according to use.
For example, the average diameter of microflute can 0.1 to 200 μm, 0.1 to 100 μm, 80 to 200 μm, 80 to 150 μm, 1
Scope to 40 μm, 1 to 30 μm or 5 to 25 μm.The average diameter of described microflute can be formed as less than 50 μm of size, or
50 μm of size can be formed larger than.When the average diameter of described microflute is formed as less than 50 μm of size, oil can be played
The effect of groove.The work(of the oil groove of certain level when the average diameter of described microflute is formed larger than 50 μm of size, can be played
Can, and the dispersibility of processability and ceramic particle when ceramic particle described later is scattered in coating, can be improved simultaneously.
Now, the surface treated steel plate of the present invention can meet described formula 1.That is, on the basis of two adjacent microflutes,
With respect to the average diameter of each microflute, the ratio of the distance between each groove center can meet 1.2 to 4.5,1.5 to 4 or 1.5 to 3.
This be the interval between groove has been made with definition it is indicated that be capable of coating surface low coefficient of friction while prevent resin
The ratio that the intensity of layer declines.
By coating surface amass on the basis of, formed described microflute region can be more than 60%.
Specifically, it is formed for for the coating on steel plate, the surface area 100% of the opposing face not form microflute is
Benchmark, the region forming microflute can be more than 60%.For example, formed described microflute region can 60 to 90%, 60 to
85% or 65 to 75% scope.The microflute of described scope is formed on coating, thus not hindering the processing of surface treated steel plate
It is capable of excellent case hardness while property.
Described case hardness not hinder can crackle and corrosion proof scope in realization not hindering processability and.
The average diameter of described microflute can be in 0.5 to 20 μm of scope, and the diameter of microflute and depth scale can be in 2:1
Scope to 1:50.
For the average diameter of microflute, as long as oil groove can be formed, just it is not specially limited, for example, microflute
Average diameter can be in the scope of 0.5 to 18 μm, 1 to 18 μm, 5 to 20 μm or 8 to 16 μm.
And, be formed at the microflute on coating mean depth can the 10 to 80% of coating average thickness, 10 to
60%th, 30 to 70% or 40 to 60% scope.And, the ratio of the diameter of microflute and depth can be in 2:1 to 1:50,2:1
Scope to 1:30,1:1 to 1:10 or 1:2 to 1:5.Controlled above-mentioned by the mean depth that will be formed in the microflute on coating
In the range of, oil groove can be effectively formed, thus, it is possible to realize excellent processability.
Can include forming the area of 20 the above microflutes in the unit area in horizontal 100 μm and vertical 100 μ m
Domain.
For example, for microflute, the quantity of the microflute being formed in per unit area can be more than 100,1000 with
Above although being not specially limited to its upper limit, but can be less than 10000, less than 5000 or less than 1000.Formed
Acting as of the quantity of described microflute on the resin layer, gives excellent processing by reducing the coefficient of friction of surface of steel plate
Property, the quantity of described microflute can carry out various changes according to required physical property or profile nature and deform.
Microflute can play the effect of oil groove.Specifically, for the relation of oil groove and frictional behavior, by the fluid of oil groove
Statical model (hydrostatic model) illustrates, and when applying pressure f to steel plate, surface profile will deform, thus
Produce stress σ, lead to produce frictional force because of the distortional stress σ of material on surface.Now, when there is Closed oil tank (closed
Oil pocket) when, produce hydrostatic pressure by oily compression, when described hydrostatic pressure bears external loading f, act on
The distortional stress σ of material will reduce.Therefore, the coefficient of friction on oil groove more steel plate materialses surface is lower.
As described above, for being formed for the surface treated steel plate of the present invention of multiple microflutes, described microflute plays oil groove
Effect, thus realizing low coefficient of friction, thus, it is possible to realize excellent processability.
As an example, the structure of the surface treated steel plate of the present invention is to be formed with the knot of multiple microflutes on coating
Structure, can also be that ceramic particle is absorbed in its part on the basis of said structureThe scattered knot of form in coating
Structure.Specifically, described coating has the property of softness, thus when the higher ceramic particle of hardness is sprayed with certain speed,
Can be formed as being trapped in the structure of plating interface, or be trapped in structure within coating etc..So, form ceramic particle
The structure being partly or entirely trapped in coating such that it is able to improve coating surface hardness, it is possible to increase the processability of steel plate.
Now, the average diameter of ceramic particle can be less than the 50% of coating average thickness.For example, described ceramic particle
Average diameter can be in the scope of 10 to 45%, 15 to 40%, 15 to 35% or the 20 to 30% of coating average thickness.Work as institute
When stating the ceramic particle of the smaller size of scope and being trapped in coating, ceramic particle can be evenly distributed and be trapped in plating
Layer is based on the scattered feature of ceramic particle such that it is able to improve.
As an example, each ceramic particle can be that a part is trapped in described coating, and remainder is externally exposed.
In this case, surface treated steel plate because of low coefficient of friction excellent in workability, and can more effectively realize ceramic grain
The function of son is the functions such as corrosion resistance, scratch resistance, thermostability, thermal diffusivity, heat conductivity, light characteristic, antibiotic property, coloring.But simultaneously
It is not excluded for described ceramic particle and be fully sunk in the situation in coating.
The average diameter of described ceramic particle can be in the scope of 10nm to 10 μm, 0.1 to 5 μm or 1 to 2 μm.
Described ceramic particle can comprise: ceramic masses, its comprise the oxide of metallic element, hydroxide, carbide,
Nitride, boron compound, carbonate or phosphate；The ceramic masses of Barium metatitanate. etc. and the compound of metal；And such as
The ceramal of ceramic metal (cermet).And, the semimetal material of such as silicon according to circumstances, can also be used.Specifically,
Described ceramic particle can comprise titanium oxide (tio2), aluminium oxide (al2o3), silicon oxide (sio2), aluminium nitride (aln), silicon nitride
(si3n4) and zirconium oxide (zro2One or more of).
Process ceramic particle sprayed in coating is not specially limited, for example, it is possible to by ceramic particle will be contained
Air (air) carry out the method for high-pressure injection to implement.
As another example, the structure of described coating can be that the opposing face in the face being connected with steel plate is formed between certain
Every the structure being formed with the cloudy pattern carved and carve with sun, i.e. form the structure of the pattern with segment difference form.In the present invention, exist
When forming the pattern with segment difference on coating, highly high part represents sun quarter, and highly low part represents cloudy quarter.Specifically,
For being formed with the cloudy pattern carved and carve with sun at certain intervals, the cloudy width carved with sun of carving is about in 1 to 5 μm of scope.So
Ground, by coating surface formed be formed with certain intervals cloudy carve and pattern that sun is carved, can be formed existing, there is microflute
Pattern, thus the hydrophobicity improving further, thus extra surface treatment need not be carried out it becomes possible to improve stain resistance and
Self-cleaning property.
The surface treated steel plate of the present invention can have excellent processability due to having multiple oil grooves.Specifically, when
When the coating of surface of steel plate forms the pattern with microflute, can by by be formed with the surface of micro-protuberance with faced by coating
State pressed or pressed to manufacture, now, formed oil groove, thus the oil being included in when being processed in groove can drop
Friction between the article of low pressurization and steel plate is such that it is able to improve processability.
Described processability can be confirmed by coefficient of friction.For example, lower being considered to be of coefficient of friction is conducive to molding
Excellent physical property, but be not necessarily more low better.Friction too low it is meant that due to being successfully wound into roll bending (coil)
Need during form to rub, therefore consider winding tension, too low coefficient of friction can increase to product processes to load, according to
Experience confirms, is that when below 0.18, punch process is very excellent when coefficient of friction is as follows.In fact, through punch forming
The coefficient of friction of the ordinary resin coated steel plates as the circulation of household electrical appliances resin-coated steel plate of technique is 0.24 to 0.33, or
It is higher than many times this value.
The coefficient of friction of the surface treated steel plate of the present invention can be less than 0.15.For example, described coefficient of friction can be
0.1 to 0.15 or 0.13 to 0.15 scope.It is capable of excellent processing by coefficient of friction is adjusted to described scope
Property.
Described coating surface roughness (ra,) can be in 0.1 to 2,000 μm of scope.
For example, described surface roughness (ra) can 0.1 to 10 μm, 0.1 to 5 μm, 1 to 2,000 μm, 1.5 to 1,800
μm or 10 to 1,500 μm of scope.Roughness can be by the roughness produced by pattern with microflute being formed on coating
To embody with the cloudy roughness produced by pattern carved with sun of carving that is formed with certain intervals being formed on coating.Now, in plating
Do not formed on layer be formed with certain intervals cloudy carve and during pattern that sun is carved, surface roughness (ra) is in 0.1 to 10 μm of model
Enclose, very low.
Described mean roughness (ra) can be calculated by the numerical value of horizontal 10cm and the unit area of vertical 10cm.
It has been confirmed that controlled in described scope by the surface roughness of the coating by forming pattern, thus in coating
Upper formation microflute or even the pattern being formed with cloudy quarter and sun quarter at certain intervals.Thus, according to circumstances, in described coating surface shape
When becoming Organic substance coating, the bonding force between coating and Organic substance coating is excellent not to need extra bonding such that it is able to manufacture
The surface treated steel plate of the simple structure of layer and cushion.
So, there is because of microflute the surface roughness of very little, but such roughness does not produce to surface topography
Impact, forms organic type coating such that it is able to being formed relatively flat and having higher case hardness in the upper side of coating
Surface of steel plate, therefore, it is possible to produce, surface topography is attractive in appearance and the product of developability, case hardness and excellent in workability.
Described coating can comprise zinc or the alloy containing zinc.
Organic type coating can also be included on described coating.This specifically can represent, is being formed with microflute or even with one
Fixed interval is formed with and forms organic type coating on the cloudy coating of pattern carved and carve with sun.For example, various institutes can be selected as needed
State organic type coating, as long as can by the coating of the resin combination as the existing method commonly using, be dried with
And the method for solidification, come to coat, is just not specially limited.
For example, described resin combination can comprise epoxy resin, carbamate resins, polyester resin as main resin
And one or more of acrylic resin resin.And, the resin combination forming described organic type coating is in wax class, epoxy
Class, carbamate apoplexy due to endogenous wind can also comprise other additives.
As an example, on the basis of the film after solidifying, the thickness of organic type coating can be at 2 μm to 30 μm, 3 μm
Scope to 20 μm or 5 μm to 15 μm.When the organic cover light being formed, steel plate is exposed to during corrosive environment possibly cannot
Guarantee sufficient corrosion resistance.On the contrary, when the organic overweight coating being formed, organic type coating can take off in process
Fall.
Being formed with described microflute or even the coating of pattern with the overlay film attachment degree of organic type coating can be more than 60%.Example
As the overlay film attachment density of coating and organic type coating can be in 60 to 100%, 60 to 95% or 80 to 95% scope.This
When, for %, the evaluation for overlay film tack can confirm in the following manner, that is, vertically left on strip
The cross-cut (cross-cut) that line width is 1mm is entered on the right side, thus forming 100 tetragons scale grid (mesh), Ran Houli
Bonded securely with commercially available cellophane tape (cellophane tape), then vertically tear from flat board, then will
The quantity of the quadrilateral mesh of the demoulding is not had to be calculated as a percentage and confirm.
The overlay film attachment degree of coating and organic type coating is controlled in described scope such that it is able to prevent in the course of processing
Produce the demoulding or overlay film to deform and lead to the phenomenon that the processability needed for steel plate declines, and can meet corrosion resistance etc. its
His required physical property.
Thus, by the microflute being formed on coating or even the pattern being formed with cloudy quarter and sun quarter at certain intervals, can
Realize the excellent bonding force between coating and organic type coating such that it is able to be implemented without the technique of extra adhesive layer
Simplify.
Below, by accompanying drawing, the present invention is described in more details, but the scope of the present invention is not limited to this.
Fig. 1 to Fig. 3 be shown respectively the present invention formation have the patterning with microflute the steel plate of coating section knot
The schematic diagram of structure.
Understand with reference to Fig. 1, the surface treated steel plate of the present invention, form coating 21, described coating 21 on the surface of steel plate 11
The upper pattern forming described microflute 31.
With reference to Fig. 2, illustrate the structure of the pattern of microflute 31 is formed on the coating 21 be formed at steel plate 11 surface, and ceramic grain
Son 51 is dispersed in the structure on surface.In figure illustrates to be trapped in the structure of coating 21 about the half of described ceramic particle 51, but
Can also be according to circumstances that ceramic particle 51 is fully sunk in the structure of coating 21.
And, understand with reference to Fig. 3, form coating 22 on steel plate 12 surface, pattern 42 is formed on described coating 22, described
Formed on pattern 42 and be formed with the concavo-convex of segment difference at certain intervals, microflute 32 is formed on the coating 22 being formed with described pattern 42
Pattern structure.That is, the second pattern weight by the first pattern 42 forming segment difference with based on microflute 32 is proposed in the present invention
The folded structure being formed.
And, Fig. 4 is the schematic diagram of the horizontal plane illustrating described Fig. 1, d and s recording in figure can represent in formula 1
D and s.Specifically, d represents arbitrary first microflute and is formed at second microflute of position nearest with described first microflute
Average diameter, s represents the distance between the center of the first microflute and center of the second microflute.
An example as the surface treatment method of the surface treated steel plate of the present invention is it is provided that a kind of be surface-treated
The manufacture method of steel plate, the method comprises the following steps: forms coating in the one or both sides of steel plate；Mechanically in plating
Layer surface forms the pattern of the microflute that average diameter is less than 50 μm, and microflute meets formula 1 below,
[formula 1]
1.2≤s/d≤5
In formula 1, it is micro- be formed at the position nearest with described first microflute second that d represents arbitrary first microflute
The average diameter of groove, s represents the distance between the center of the first microflute and center of the second microflute.
Now, the explanation for described formula 1 can be identical with above-mentioned explanation.
The step that the one or both sides of above-mentioned steel plate form coating can pass through the well-known each of the art
Kind of method is implementing.Described coating is formed on steel plate, for example, it is possible to 1 to 100g/m2Plating adhesion amount is forming.And,
Described coating can be the structure being plated with zinc, kirsite, fused zinc or molten zinc alloy.
The above-mentioned step mechanically forming the pattern of the microflute that average diameter is less than 50 μm in coating surface,
Pressure can be applied by using the roller being formed with micro-protuberance or the plate being formed with micro-protuberance, thus forming microflute figure in resin bed
The method of case is implementing.
For example, the step mechanically forming microflute in coating surface, can be by being formed with the table of micro-protuberance
Face is to implement with the state pressing faced by coating or applying pressure.For example, using the roller being formed with micro-protuberance or be formed with micro-
The plate of projection come to apply pressure such that it is able to coating formed microflute pattern.Now, it is formed at the shape of the microflute on coating surface
Shape or pattern can be determined by the micro-protuberance being formed at roller or plate etc..
As an example, mechanically form the step of microflute in coating surface before, it is additionally may included in plating
Layer surface forms the step being formed with the cloudy pattern carved and carve with sun at certain intervals.Specifically, using formation shape at certain intervals
Become the roller having the cloudy pattern carved and carve with sun, coating is rolled such that it is able to pattern is formed on coating.Now, roller
The cloudy average distance carved and sun quarter between can be in 1 to 5 μm of scope.Thus form pattern in coating surface, thus having height
Hydrophobicity, therefore do not need extra surface treatment it becomes possible to improve stain resistance and self-cleaning property.
In the step mechanically forming the pattern of the microflute that average diameter is less than 50 μm in described coating surface
Afterwards, it is additionally may included in the step forming coating resin compositionss on figuratum coating.
By described step, organic type coating can be formed on forming figuratum coating, described organic type coating can
With identical with above-mentioned organic type coating.
The forming method of described organic type coating is not specially limited, for example, it is possible to using by resin combination
Coating, be dried and solidification method painting method being formed.
Specifically, on forming figuratum coating, the step of coating resin compositionss may include that resin combination
It is coated on the step on coating；And by being dried and cured to form organic type coating to the resin combination being coated with
Step.
Now, the above-mentioned step being coated on resin combination on coating can use such as rod coater, roll-type
Coating machine or curtain coater.
And, the method that the resin combination of coating is dried is not specially limited, but can be by hot blast and add
Hot mode, infrared heating mode, induction heating mode or ultraviolet irradiate etc. to be implemented.For example, Hot-blast Heating mode is permissible
Implement to be dried 10 to 50 seconds at a temperature of 160 to 340 DEG C.Induction heating mode can the frequency range of 5 to 50mhz, 3 to
Under the power of 15kw, implement to be dried 5 to 20 seconds.
And, the step of resin combination of solidification coating is not specially limited, it is possible to use existing heat cure and
The methods such as ultraviolet curing.
Below, with reference to embodiments of the invention etc., the present invention will be described in more detail, but the scope of the present invention
It is not limited to examples set forth below.
Embodiment 1 to 3: manufacture surface treated steel plate
In the plating solution being made up of 0.1 to 0.3% al and the zn of surplus, steel plate is carried out melt plating, thus being formed
Thickness is 7 μm of molten zinc plating layer, then using the roller being formed with micro-protuberance, forms microflute figure on the coating of surface of steel plate
Case, thus manufactures surface treated steel plate.The shape of the microflute pattern being formed is as shown in table 1 below.
Table 1
Now, the photo of the surface treated steel plate surface manufacturing in described embodiment 1 figure 5 illustrates.Can be true from Fig. 5
Recognize, the pattern with microflute is formed on coating.
Comparative example 1
In addition to the coating surface being formed on surface of steel plate does not form microflute, by side same as Example 1
Method has manufactured surface treated steel plate.
Comparative example 2
By method manufacture same as Example 1, form a diameter of 55 μm of microflute, microflute is spaced apart 50 μm and microflute
Depth to manufacture surface treated steel plate for 10 μm.
Experimental example 1
For in described embodiment 1 to 3 and comparative example 1 to 2 manufacture surface treated steel plate, determine coefficient of friction and
Processability.Record condition determination below, measurement result is as shown in the following Table 2.
1) coefficient of friction
The surface treated steel plate of cutting 320mm × 45mm × 0.5mm (horizontal × vertical × thickness) size, then by described test piece
After being arranged on frictionmeter (posco), the mould using 25mm × 40mm (horizontal × vertical) size is pressed, and then will
Described test piece moves horizontally and measures coefficient of friction.
2) mensure of processability
For the evaluation of processability, implement 90 ° of bendings (radius of curvature is 1mm) and evaluate.
Observe the crack width of processing department by sweep electron microscope (sem),
When crack width is more than 10 μm, it is evaluated as x,
When crack width is less than 10 μm, it is evaluated as △,
When crack width is less than 1 μm or does not have crackle, it is evaluated as zero.
Table 2
| Coefficient of friction | Processability | |
| Embodiment 1 | 0.108 | ○ |
| Embodiment 2 | 0.118 | ○ |
| Embodiment 3 | 0.112 | ○ |
| Comparative example 1 | 0.108 | x |
| Comparative example 2 | 0.24 | △ |
By above-mentioned table 2, for the surface treated steel plate of the present invention, compared with comparative example, coefficient of friction compares
Little, therefore excellent in workability.
In sum, processability etc. while having excellent surface quality can be produced by the surface treated steel plate of the present invention excellent
Different product.
Experimental example 2: hydrophobic evaluation
For the surface treated steel plate manufacturing in described embodiment 1 to 3 and comparative example 1 to 2, surveyed on the basis of ultra-pure water
Determine contact angle.Specifically, ultra-pure water is dropped in surface of steel plate, and determines the left side by measuring the globule and right side angle
Obtained meansigma methodss afterwards.Now, after measuring 3 times, to be determined with the meansigma methodss of 3 times.
Experimental result, the result of calculation of the globule contact angle of embodiment 1 to 3 is more than 95 °, but the water of comparative example 1 and 2
The result of calculation of pearl contact angle is less than 80 °.
It follows that the surface treated steel plate of the present invention embodies excellent hydrophobicity, at without extra surface
Reason just can improve stain resistance and self-cleaning property.
Claims (14)
1. a kind of surface treated steel plate, comprising:
Steel plate；And
Coating, it is formed at the one or both sides of described steel plate,
Described coating has following structure: the opposing face in the face connecting with steel plate forms the microflute that average diameter is less than 50 μm
Pattern,
Microflute meets formula 1 below,
[formula 1]
1.2≤s/d≤5
In formula 1, d represents arbitrary first microflute and is formed at second microflute of position nearest with described first microflute
Average diameter, s represents the distance between the center of the first microflute and center of the second microflute.
2. surface treated steel plate according to claim 1, wherein, by coating surface amass on the basis of, formed microflute region
For more than 60%.
3. surface treated steel plate according to claim 1, wherein, the average diameter of microflute is in 0.5 to 20 μm of scope, micro-
The diameter of groove and depth scale are in the scope of 2:1 to 1:50.
4. surface treated steel plate according to claim 1, wherein, including the unit in horizontal 100 μm and vertical 100 μ m
Form the region of the described microflute of more than 20 in area.
5. surface treated steel plate according to claim 1, wherein, also includes partly or entirely being absorbed in and being scattered in coating
Ceramic particle.
6. surface treated steel plate according to claim 1, wherein, coating has a structure that the face that connects with steel plate
Opposing face forms the pattern forming segment difference at certain intervals.
7. surface treated steel plate according to claim 1, wherein, the coefficient of friction of surface of steel plate is less than 0.15.
8. surface treated steel plate according to claim 1, wherein, the surface roughness (ra) of coating is 0.1 to 2,000 μ
m.
9. surface treated steel plate according to claim 1, wherein, coating comprises zinc or the alloy containing zinc.
10. surface treated steel plate according to claim 1, wherein, also includes organic type coating on coating.
11. surface treated steel plates according to claim 10, wherein, organic type coating comprises asphalt mixtures modified by epoxy resin as main resin
One or more of fat, carbamate resins, polyester resin and acrylic resin resin.
A kind of 12. manufacture methods of surface treated steel plate, it comprises the following steps:
Form coating in the one or both sides of steel plate；
Mechanically form the pattern of the microflute that average diameter is less than 50 μm in coating surface,
Microflute meets formula 1 below,
[formula 1]
1.2≤s/d≤5
In formula 1, d represents arbitrary first microflute and is formed at second microflute of position nearest with described first microflute
Average diameter, s represents the distance between the center of the first microflute and center of the second microflute.
The manufacture method of 13. surface treated steel plates according to claim 12, wherein, mechanically in coating surface
The step forming the pattern of microflute that average diameter is less than 50 μm, using the roller being formed with micro-protuberance or be formed with micro-protuberance
Plate applies pressure, thus forming microflute pattern on the resin layer.
The manufacture method of 14. surface treated steel plates according to claim 12, wherein, mechanically in coating table
After face formation average diameter is less than 50 μm of the step of the pattern of microflute, it is additionally included in and is coated with the figuratum coating of formation
The step of resin combination.
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| CN104726813A (en) * | 2013-12-24 | 2015-06-24 | Posco公司 | Galvanized steel plate with excellent machinability and method for manufacturing same |
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| US5532051A (en) * | 1991-12-25 | 1996-07-02 | Nippon Steel Corporation | Steel sheet excellent in coating sharpness, defect-formation resistance and workability |
| CN101842518A (en) * | 2007-10-31 | 2010-09-22 | 杰富意钢铁株式会社 | Surface-treated steel sheet, method for producing same, and resin-coated steel sheet |
| CN101960049A (en) * | 2007-12-27 | 2011-01-26 | Posco公司 | Resin coated steel sheet, resin composition therefor and steel sheet treatment composition |
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