CN101821420A - Apparatus for producing molten metal plated steel strip and process for producing molten metal plated steel strip - Google Patents
Apparatus for producing molten metal plated steel strip and process for producing molten metal plated steel strip Download PDFInfo
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- CN101821420A CN101821420A CN200880110887A CN200880110887A CN101821420A CN 101821420 A CN101821420 A CN 101821420A CN 200880110887 A CN200880110887 A CN 200880110887A CN 200880110887 A CN200880110887 A CN 200880110887A CN 101821420 A CN101821420 A CN 101821420A
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- molten metal
- throttle part
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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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/14—Removing excess of molten coatings; Controlling or regulating the coating thickness
- C23C2/22—Removing excess of molten coatings; Controlling or regulating the coating thickness by rubbing, e.g. using knives, e.g. rubbing solids
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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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
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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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/14—Removing excess of molten coatings; Controlling or regulating the coating thickness
- C23C2/16—Removing excess of molten coatings; Controlling or regulating the coating thickness using fluids under pressure, e.g. air knives
- C23C2/18—Removing excess of molten coatings from elongated material
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- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Coating With Molten Metal (AREA)
Abstract
This invention provides an apparatus for producing a molten metal plated steel strip in which a gas is blown through a gas wiping nozzle (3) against the surface of a steel strip (S) being pulled up continuously from a molten metal plating bath (8) to regulate the amount of plating deposited on the surface of the steel strip. The apparatus comprises molten metal drawing members (1, 1) having a length equal to or larger than the width of the steel strip and disposed opposite to the steel strip (S) on both sides of the steel strip (S) in its part present under the surface of a liquid in a molten metal tank (9), and a shielding material (2) arranged between the molten metal drawing members (1, 1) disposed opposite to the steel strip (S) on an extension of the steel strip surface. According to this apparatus, even when the steel strip width is varied, the amount of excess molten metal, which has accompanied the steel plate being pulled up from the plating bath, is reduced over the whole width of the steel strip, whereby the occurrence of splash in the step of gas wiping can be reduced.
Description
Technical field
The present invention relates in hot-dip metal plated technology, can reduce molten metal splash hot-dip metal plated steel band manufacturing installation and used the manufacture method of the hot-dip metal plated steel band of this device.
Background technology
Use Fig. 7 that the device and the technology of general continuously dip coat are described.Be provided with following gas wiping apparatus: steel band S is immersed in the hot-dip metal plated bath 8 in the molten metal bath 9, utilize deflector roll 7 to change direction, then with this steel band S pull-up above vertical direction, after this operation, from this steel band of clamping S and the upwardly extending gas wiping nozzle that is provided with in opposite directions 3 in width of steel band side spray gas under pressure to steel band, remove excessive molten metal, the adhesion amount (coating adhesion amount) of control molten metal is so that the molten metal that adheres on the steel strip surface reaches predetermined thickness of coating equably on plate width direction and plate length direction.
Stable for the steel band shift position that makes gas wiping portion, usually, inner support roller 5 is bathed in configuration under the bath face above the deflector roll 7, when carrying out Alloying Treatment etc., is provided with above gas wiping nozzle 3 as required and bathes top backing up roll 4 in addition.
In addition, in continuous processing, for output is increased, steel band is increased by speed, but when in continuously dip coat technology, utilizing gas wiping mode to control the coating adhesion amount, because the viscosity of molten metal, therefore along with the increase of line speed, just increasing of steel band by the initial stage adhesion amount after the plating bath, thereby, have to the wiping gaseous tension is set at more high pressure, thus within the specific limits with the control of coating adhesion amount, splash significantly increases, and becomes to keep favorable surface quality.
In order to address the above problem, before arriving the wiping nozzle, reduce the incidental excessive firm method of molten metal reduction of steel band to a certain extent by the initial stage adhesion amount after the plating bath thereby disclose.
Following apparatus is disclosed in the TOHKEMY 2004-76082 communique, its molten metal throttle part that is provided with in the steel band both sides between support roll 5 and the wiping nozzle 3 in plating bath is non-contactly in opposite directions removed excessive coating, adjust thickness of coating by the gas wiping then, the shape of this molten metal throttle part is preferably rectangle, have the big more introduction part of the distance of past more lower end and steel band surfaces externally and internally shape or right cylinder, the position that is provided with of this molten metal throttle part most preferably is the position up and down of crossing over the plating bath face.In addition, preferably this molten metal throttle part is provided with in the mode of surrounding steel band.
But, in the method, even can be by the excessive molten metal of molten metal throttle part throttling width of steel band direction central part, but both ends in the width of steel band direction, because molten metal flows into from the lateral width of steel band direction central part of steel band, therefore at width of steel band direction both ends, the restriction effect of molten metal reduces.Therefore as can be known, compare increase with the situation that above-mentioned molten metal throttle part is not set in the difference of the excess molten metal amount at width central part and both ends, after gas wiping operation in, reduce the effect reduction of splash.In addition, the width that can't tackle the steel band of manufacturing owing to the shape that forms by disclosed this encirclement steel band in this method changes, and the plate width dimensions that therefore can demonstrate the restriction effect of molten metal is restricted.
The present invention considers the problems referred to above, the hot-dip metal plated steel band producing apparatus is provided, even changing, width of steel band also can in the scope of steel band total width, reduce the incidental excessive molten metal of the steel plate of pull-up from plating bath, can reduce the generation of the splash in the gas wiping operation thus, stably make the good hot-dip metal plated steel band of appearance.
And, the invention provides the generation that can reduce splash in the gas wiping operation, and can stably make the manufacture method of the steel band of the good hot-dip metal plated steel band of appearance.
Summary of the invention
The invention provides (1) a kind of hot-dip metal plated steel band manufacturing installation, by gas wiping nozzle to the steel strip surface blowing gas of pull-up continuously from hot-dip metal plated bath, carry out the control of the coating adhesion amount of steel strip surface, it is characterized in that, subsurface steel band both sides at molten metal trough, have the molten metal throttle part of length more than width of steel band that disposes in opposite directions with steel band, and between described on the steel band face extended line and molten metal throttle part that steel band disposes in opposite directions, disposed hovel.
And, provide (2) as (1) described hot-dip metal plated steel band manufacturing installation, it is characterized in that, the steel band forward surface of hovel is in the length of steel band working direction, for the steel band forward surface of molten metal throttle part more than 50% of length of steel band working direction (when the steel band forward surface of molten metal throttle part in the length of steel band working direction not simultaneously in the steel band both sides, for the steel band forward surface of molten metal throttle part at the steel band forward surface of the little molten metal throttle part of the length of steel band working direction more than 50% of length in the steel band working direction), and the distance of molten metal throttle part and hovel is below the 3mm.
And, the manufacture method of (3) a kind of hot-dip metal plated steel band is provided, it is characterized in that, use the manufacturing installation of (1) or (2) described hot-dip metal plated steel band to carry out hot-dip metal plated to steel band.
Description of drawings
Fig. 1 is the sectional view of an embodiment of expression hot-dip metal plated steel band manufacturing installation of the present invention.
Fig. 2 (a) and Fig. 2 (b) are the figure of the effect of explanation molten metal throttle part of hot-dip metal plated steel band manufacturing installation of the present invention and hovel.
Fig. 3 is first figure of combination example of the cross-sectional shape of the molten metal throttle part that uses in the hot-dip metal plated steel band manufacturing installation of the present invention of explanation and hovel.
Fig. 4 (a) and Fig. 4 (b) are second figure of combination example of the cross-sectional shape of the cross-sectional shape of the molten metal throttle part that is provided with in the hot-dip metal plated steel band manufacturing installation of the present invention of explanation and hovel.
Fig. 5 (a) and Fig. 5 (b) are the 3rd figure of combination example of the cross-sectional shape of the cross-sectional shape of the molten metal throttle part that is provided with in the hot-dip metal plated steel band manufacturing installation of the present invention of explanation and hovel.
Fig. 6 (a) and Fig. 6 (b) are the 4th figure of combination example of the cross-sectional shape of the cross-sectional shape of the molten metal throttle part that is provided with in the hot-dip metal plated steel band manufacturing installation of the present invention of explanation and hovel.
Fig. 7 makes the sectional view of the general hot-dip metal plated steel band manufacturing installation of expression.
Embodiment
If from deflector roll to the molten metal throttle part that is provided for removing excessive molten metal the gas wiping nozzle, the molten metal flow that then utilizes the gas wiping to remove drops down onto the below, forms liquid in the gap of steel band and molten metal throttle part and accumulates the place.If accumulate the distance of gas wiping portion from this liquid short, then can not reduce excessive molten metal amount, so the inventor has drawn the conclusion that preferably the molten metal throttle part is arranged on plating bath face below.
But, the molten metal throttle part only is set, the molten metal restriction effect at steel band both ends is still less.Therefore,, use the water model device of simulation molten metal throttle part molten metal flow on every side, carried out detailed flux analysis in order to reduce the incidental molten metal amount of the steel band that from plating bath, takes out effectively.Its result as can be known, in order to reduce the amount of the molten metal of mentioning with steel band from plating bath, it is effective suppressing from the steel band both ends to the mobile of steel band central part.
The inventor has finished the present invention based on above-mentioned opinion.
Below, with reference to accompanying drawing embodiments of the present invention are described.In following figure, give identical mark to the part identical, and omit its explanation with the represented partial action of the figure that has illustrated.
Fig. 1 is the sectional view of an embodiment of expression hot-dip metal plated steel band manufacturing installation of the present invention.Among Fig. 1, the 1st, the molten metal throttle part that in plating bath, is provided with, in bath support roll 5 above clamping steel band S, and be set at the position of steel band two lateral extent steel strip surface predetermined distances.The 2nd, hovel is provided with near steel band S end between molten metal throttle part 1,1 on the steel band face extended line and that steel band S disposes in opposite directions." on the steel band face extended line " is on the expression line parallel with the width of steel band.In addition, " hovel " is the parts that cover plating bath, and the inhibition plating bath is flowing to the steel band central part from the steel band both ends.
Fig. 2 (a) and Fig. 2 (b) are the figure of the effect of explanation molten metal throttle part of apparatus of the present invention and hovel, Fig. 2 (a) is the vertical view that is melted the molten metal flow of steel band end in the zone that the metal throttle part clips when representing only to possess the molten metal throttle part, and Fig. 2 (b) is the vertical view that expression is melted the molten metal flow of steel band end in the zone that the metal throttle part clips when possessing molten metal throttle part and hovel 2.No matter which kind of shape molten metal throttle part 1 is, if only molten metal throttle part 1 is set, then as Fig. 2 (a) shown in, produce molten metal from the steel band end to mobile 11 of steel band central part.The coating restriction effect that is produced by molten metal throttle part 1 is big more, and there is the tendency that increases more in this molten metal flow 11 by way of compensation.Therefore, the restriction effect of molten metal throttle part 1 weakens at the steel band both ends or disappears.Shown in Fig. 2 (b), if hovel 2 is arranged between above-mentioned on the steel band face extended line and the molten metal throttle part 1,1 that steel band disposes in opposite directions, then can cover molten metal from the steel band end to the flowing of steel band central part, therefore can in steel band total width scope, demonstrate the excess molten metal restriction effect that produces by molten metal throttle part 1 equably.
Even width of steel band changes, because after utilizing molten metal throttle part and hovel in steel band total width scope, to reduce the incidental excessive molten metal amount of steel band, still can adjust thickness of coating, therefore can significantly reduce the generation of splash by gas wiping nozzle.According to the present invention, even still can demonstrate the molten metal restriction effect, therefore can significantly reduce the generation of splash, thereby can keep the hot-dip metal plated steel band that free of surface defects is made on high productivity ground because steel band is significantly risen by speed.
The steel band side end face of hovel 2 is shown in Fig. 2 (b), preferably with steel band face quadrature.Distance between the steel band side end face of steel band end and hovel 2 gets final product below being made as 5mm, and this distance is more little preferred more.In addition, under to the inoperative state of the pressing force of steel band, it is most preferred condition that the steel band end contacts with the steel band side end face of hovel 2.
Molten metal throttle part 1 is preferably below the 3mm with the gap of hovel 2, and this gap is the smaller the better.
From the molten metal that prevents 1,1 of molten metal throttle part viewpoint to the steel band central flows, the steel band forward surface of hovel 2 preferably is at least length 50% or more of molten metal throttle part 1 in the steel plate working direction in the length (vertical-direction length) of steel plate working direction, most preferably is the length identical with molten metal throttle part 1.
When the steel band forward surface of molten metal throttle part 1 and the distance of steel band changed on the steel band working direction, molten metal throttle part 1 preferably kept certain with hovel 2 as far as possible in the gap of steel band working direction.For example, as shown in Figure 3, when the cross-sectional shape of molten metal throttle part 1 is circular, preferably the constituting of hovel 2: have the big slightly radius-of-curvature of radius-of-curvature than the circular arc of molten metal throttle part 1 by following concavity arc surface with molten metal throttle part 1 face in opposite directions.
The cross-sectional shape of molten metal throttle part is not limited to the shape of Fig. 3.Can adopt the different shape of following explanation.For example, shown in Fig. 4 (a), cross-sectional shape is a trilateral, with steel band S in opposite directions face and with bath face upper surface in opposite directions, if parallel with steel band S and bath face respectively, then can further improve the throttling performance of molten metal throttle part 1.If the cross-sectional shape of molten metal throttle part 1 is made this shape, follow steel band S progressive (wake) 11 that flow even then produce, fluid also flows to the little direction of resistance easily, therefore the end portion expenditure at molten metal throttle part 1 flows 13, plays the effect that wake 11 is grown up that hinders.And, because 13 directions that flow to away from steel band S that flow, therefore above molten metal throttle part 1, become with to flow to flowing of steel band S 12 relative, also have the effect that reduces by 12 the speed of flowing.Molten metal throttle part 1 has been owing to carried out flow control as above, near the therefore wake the steel band S that can suppress significantly from plating bath, to mention, and then can reduce the incidental excessive hot-dip metal plated amount of steel band S.Consequently, can reduce the wiping gaseous tension, reduce the generation of molten metal splash, thereby can make the coated steel strips of excellent surface quality.At this moment, shown in Fig. 4 (b), the cross-sectional shape of hovel 2 is that rectangle gets final product.
The cross-sectional shape of the molten metal throttle part 1 of Fig. 5 (a), the cross section curve of its upper surface and the cross section curve of lower surface are protruding circular-arc in the steel band pull-up portion side of hot-dip metal plated bath, and form in the radius-of-curvature of the circular arc of the upper surface mode less than the radius-of-curvature of the circular arc of lower surface.And the thickness of molten metal throttle part 1 is towards reducing gradually with the end of steel band opposition side and with the end of the face of bath opposition side.The shape of this molten metal throttle part 1 shows the most significantly that the wake 11 of sening as an envoy to branches out and flows 13 effect and form effect to 12 the convection current of flowing.
At this moment, hovel 2 with molten metal throttle part 1 surface in opposite directions shown in Fig. 5 (b), constitute by concavity arc surface, and preferably make the molten metal throttle part 1 and the distance of hovel 2 keep certain as much as possible with radius-of-curvature bigger slightly than radius-of-curvature molten metal throttle part 1 and circular arc hovel 2 surface in opposite directions.
Molten metal throttle part 1a, the 1b that Fig. 6 (a) illustrates possess the roller cover part that the mode with the bath face side of the outer circumference surface of support roll 5 in cover bathing forms and be configured in top, roller cover part with the steel band that forms with steel band mode in opposite directions part in opposite directions.Support roll 5 moves in the mode that contacts with steel band in the steel band both sides in the bath, and disposes in the mutually different mode in the position of its vertical direction.Therefore, part is different in the length of steel band working direction in opposite directions to be configured in the molten metal throttle part 1a of steel band S both sides and the steel band of 1b.It can be parallel that the steel band opposing part of molten metal throttle part 1a, 1b divides with respect to steel strip surface, also can tilt.
Because this molten metal throttle part 1a, 1b, in bath, produce between support roll 5 and molten metal throttle part 1a, the 1b and follow mobile 14 of support roll 5 in the bath.If produce to flow 14, follow steel band S progressive wake 15 even then produce, also can between steel band S and molten metal throttle part 1a, 1b, produce and the working direction of steel band S rightabout enforceable mobile 16, thereby suppress wake 15 significantly.Thus, can reduce the incidental excessive molten metal amount of steel band S of pull-up from plating bath.
The steel band that the molten metal throttle part also can only possess molten metal throttle part 1a, 1b that Fig. 6 (a) illustrates is part in opposite directions.At this moment, being configured in the molten metal throttle part 1a of steel band both sides and the steel band of 1b also can be identical in the length of steel band working direction partly in opposite directions.
The molten metal throttle part is that the cross-sectional shape of hovel 2 such as Fig. 6 (b) are depicted as rectangle and get final product under Fig. 6 (a) and the above-mentioned situation.At this moment, the steel band forward surface of hovel the length of steel band working direction be preferably the steel band forward surface of molten metal throttle part more than 50% of length of steel band working direction (when the steel band forward surface of molten metal throttle part in the length of steel band working direction not simultaneously in the steel band both sides, for the steel band forward surface of molten metal throttle part at the steel band forward surface of the little molten metal throttle part of the length of steel band working direction more than 50% of length in the steel band working direction), more preferably with the steel band forward surface of molten metal throttle part the equal in length of steel band working direction (when the steel band forward surface of molten metal throttle part in the length of steel band working direction not simultaneously in the steel band both sides, with the steel band forward surface of molten metal throttle part in the steel band forward surface of the little molten metal throttle part of the length of steel band working direction equal in length in the steel band working direction).
The size of molten metal throttle part, shape need consider that the speed of passing through of the equipment used and steel band waits suitably and determines.
Embodiment
Hot-dip metal plated steel band manufacturing installation shown in Figure 1 is set on Continuous Hot Dip Galvanizing Line, carries out the manufacturing experiment of pot galvanize steel band.Be configured in that the vertical offset amount between the support roll is 200mm in the bath of steel band S both sides, bath face is 80mm with distance near support roll upper end in the bath of bath face one side.The support roll diameter is Φ 400mm in the bath.
Molten metal throttle part 1, length in the width of steel band direction is made as and the suitable 2000mm of gas wiping nozzle, the distance of the upper end of molten metal throttle part and the face of bath be 5mm, with the distance of steel band be under the condition of 3mm (except that comparative example 5 and embodiment 4) with the steel band face opposite to each other fixed configurations in the steel band both sides.Hovel 2 is made as 200mm in the length of width of steel band direction, and directly links with the extended position of position control that makes frame (frame) be arranged on the servomotor of pusher side from utilization, thereby can move according to width of steel band.
The height that the pot galvanize steel band is created conditions and bathed apart from fused zinc into, the slit of gas wiping nozzle: 0.8mm, gas wiping nozzle-steel band distance: 7mm, nozzle: 400mm, fused zinc bath temperature: the steel band of 460 ℃ of manufacturings is of a size of thick 0.8mm * wide 1.2m; The coating adhesion amount is single face 45g/m
2Hovel 2 is controlled at about 3mm with the distance of steel band end.
Creating conditions and be shown in table 1 other as the investigation result of the splash generation of product quality index.The molten metal throttle part that uses among each comparative example, each embodiment and the concrete size shape of hovel describe following.The splash generation is meant, by the ratio of the steel band length that has the splash defective of checking the operation judgement with respect to the steel band length of passing through, comprises unquestioned slight splash defective in the actual use under various creating conditions.
Table 1
Comparative example 1 (conventional example) is not for there being the situation of molten metal throttle part and hovel.The splash production rate is 1.40%.
Comparative example 2 only uses the length of length with steel band working direction and horizontal direction to be respectively the molten metal throttle part of the square sectional of 50mm, embodiment 1 is with respect to comparative example 2, and the length of also appending the length that is provided with the steel band working direction and be 50mm, horizontal direction is the masking shield (distance of molten metal throttle part and masking shield is 1mm) in the rectangle cross section of 4mm.Comparative example 2 is with respect to comparative example 1, and the splash production rate has reduced about 25%.Embodiment 1 is with respect to comparative example 1, and the splash production rate almost reduces half, and with respect to comparative example 2, the splash production rate has reduced about 31%.
Comparative example 3 is shown in Fig. 4 (a), and the length that has only disposed steel band working direction and horizontal direction is 50mm and cross-sectional shape is leg-of-mutton molten metal throttle part.Embodiment 2 is with respect to comparative example 3, shown in Fig. 4 (b), also appends the hovel (distance of molten metal throttle part and masking shield is 1mm) that is provided with the rectangle cross section of embodiment 1 same size shape.Comparative example 3 is with respect to comparative example 1, and the splash production rate has reduced about 70%.Embodiment 2 is with respect to comparative example 1, and the splash production rate has reduced by 80%, and with respect to comparative example 3, the splash production rate has reduced about 32%.
Comparative example 4 is shown in Fig. 5 (a), and the length that has only disposed steel band working direction and horizontal direction is 50mm and cross-sectional shape is the molten metal throttle part of circular-arc (the upper surface radius-of-curvature is 60mmR, and the lower surface radius-of-curvature is 100mmR).The distance of molten metal throttle part lower end and steel band is 3mm.
Comparative example 4 is with respect to comparative example 1, and the splash production rate has reduced about 84%.Embodiment 3 is with respect to comparative example 1, and it is about 90% that the splash production rate has reduced, and with respect to comparative example 4, the splash production rate has reduced about 30%.
Comparative example 5 is shown in Fig. 6 (a), only disposed molten metal throttle part 1a, 1b, it possess covering reach with the distance of support roll in bathing 5 and molten metal throttle part 1a, 1b the bath inner support roller 5 that the mode of 30mm forms outer circumference surface bath face side circular-arc roller cover part and be fixed 20mm and its upper end and the distance of bath face reaches the tabular steel band opposing part that the mode of 30mm forms with the distance of steel band and molten metal throttle part 1a, 1b.
Comparative example 5 is with respect to comparative example 1, and the splash production rate has reduced about 85%.Embodiment 4 is with respect to comparative example 1, and it is about 94% that the splash production rate has reduced, and with respect to comparative example 5, the splash production rate has reduced about 33%.
As mentioned above, according to the present invention, even width of steel band changes, molten metal throttle part and hovel that utilization is arranged under the plating bath face reduce in steel band total width scope after the incidental excessive molten metal amount of steel band, still can adjust thickness of coating, therefore can significantly reduce the generation of splash by gas wiping nozzle.And, significantly rise even make steel band pass through speed, still can significantly reduce the generation of splash, therefore can keep the hot-dip metal plated steel band that free of surface defects is made on high productivity ground.
Utilize possibility on the industry
Device of the present invention reduces the generation of splash, can utilize as the manufacturing installation of the good hot-dip metal plated steel band of appearance. Device of the present invention and since steel band at a high speed by the time also can suppress the generation of splash, therefore can utilize as the device of keeping high production rate ground and make the good hot-dip metal plated steel band of appearance. And the generation that the manufacture method of steel band of the present invention reduces splash can utilize as the manufacture method of the good hot-dip metal plated steel band of appearance.
Claims (3)
1. hot-dip metal plated steel band manufacturing installation, by gas wiping nozzle to the steel strip surface blowing gas of pull-up continuously from hot-dip metal plated bath, carry out the control of the coating adhesion amount of steel strip surface, it is characterized in that, subsurface steel band both sides at molten metal trough, have the molten metal throttle part of length more than width of steel band that disposes in opposite directions with steel band, and between described on the steel band face extended line and molten metal throttle part that steel band disposes in opposite directions, disposed hovel.
2. hot-dip metal plated steel band manufacturing installation as claimed in claim 1, it is characterized in that, the steel band forward surface of hovel is in the length of steel band working direction, be the steel band forward surface of molten metal throttle part more than 50% of length in the steel band working direction, when the steel band forward surface of molten metal throttle part in the length of steel band working direction not simultaneously in the steel band both sides, for the steel band forward surface of molten metal throttle part at the steel band forward surface of the little molten metal throttle part of the length of steel band working direction more than 50% of length in the steel band working direction, and the distance of molten metal throttle part and hovel is below the 3mm.
3. the manufacture method of a hot-dip metal plated steel band is characterized in that, uses the manufacturing installation of claim 1 or 2 described hot-dip metal plated steel bands to carry out hot-dip metal plated to steel band.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007262855A JP5493260B2 (en) | 2007-10-09 | 2007-10-09 | Molten metal plated steel strip manufacturing apparatus and manufacturing method of molten metal plated steel strip |
| JP2007-262855 | 2007-10-09 | ||
| PCT/JP2008/068134 WO2009048031A1 (en) | 2007-10-09 | 2008-09-30 | Apparatus for producing molten metal plated steel strip and process for producing molten metal plated steel strip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101821420A true CN101821420A (en) | 2010-09-01 |
| CN101821420B CN101821420B (en) | 2012-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008801108872A Active CN101821420B (en) | 2007-10-09 | 2008-09-30 | Apparatus for producing molten metal plated steel strip and process for producing molten metal plated steel strip |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20100288463A1 (en) |
| EP (1) | EP2196554B1 (en) |
| JP (1) | JP5493260B2 (en) |
| KR (1) | KR20100052553A (en) |
| CN (1) | CN101821420B (en) |
| AT (1) | ATE555226T1 (en) |
| WO (1) | WO2009048031A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107532271A (en) * | 2015-04-20 | 2018-01-02 | 杰富意钢铁株式会社 | The manufacture device and manufacture method of hot-dip metal plated steel band |
| CN108779543A (en) * | 2016-03-31 | 2018-11-09 | 日新制钢株式会社 | The manufacturing method of hot-dip aluminizing steel wire |
| CN110462092A (en) * | 2017-03-31 | 2019-11-15 | 杰富意钢铁株式会社 | The manufacturing method of hot-dip plating metal steel band and its manufacturing device |
| US11313020B2 (en) | 2017-03-31 | 2022-04-26 | Jfe Steel Corporation | Method and apparatus for manufacturing hot-dip metal plated steel strip |
| CN115490414A (en) * | 2022-08-25 | 2022-12-20 | 杰讯光电(福建)有限公司 | Manufacturing process of capillary tube of optical fiber collimator |
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| EP2196853B1 (en) | 2008-12-12 | 2011-11-02 | Fujifilm Corporation | Polymerizable compound and polymer compound obtained by using the same |
| KR101245703B1 (en) * | 2010-12-03 | 2013-04-01 | 주식회사 포스코 | Apparatus and method for prevention surface defects of hot-dip coated steel strips |
| DE102012000662A1 (en) * | 2012-01-14 | 2013-07-18 | Fontaine Engineering Und Maschinen Gmbh | Apparatus for coating a metallic strip with a coating material |
| GB201416963D0 (en) * | 2014-09-25 | 2014-11-12 | Strip Tinning Ltd | Coatings |
| BE1023837B1 (en) * | 2016-01-29 | 2017-08-09 | Centre De Recherches Metallurgiques Asbl | DEVICE FOR THE HYDRODYNAMIC STABILIZATION OF A CONTINUOUSLY CONTINUOUS METAL STRIP |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1755686A (en) * | 1929-10-10 | 1930-04-22 | Chemical Res & Designing Corp | Coated metal and process of making the same |
| JPS6124465U (en) * | 1984-07-19 | 1986-02-13 | 新日本製鐵株式会社 | Molten metal plating equipment |
| US5491036A (en) * | 1992-03-27 | 1996-02-13 | The Louis Berkman Company | Coated strip |
| JP2848208B2 (en) * | 1992-08-27 | 1999-01-20 | 日本鋼管株式会社 | Hot-dip metal plating equipment |
| US5339329A (en) * | 1993-01-25 | 1994-08-16 | Armco Steel Company, L.P. | Induction heated meniscus coating vessel |
| JPH07224366A (en) * | 1994-02-08 | 1995-08-22 | Nkk Corp | Method for controlling plating thickness in hot-dip plating for metallic sheet |
| JP3506224B2 (en) * | 1999-06-24 | 2004-03-15 | Ｊｆｅエンジニアリング株式会社 | Manufacturing method of hot-dip metal plated metal strip |
| JP3772804B2 (en) * | 2002-08-15 | 2006-05-10 | Ｊｆｅスチール株式会社 | Manufacturing apparatus and manufacturing method for hot dip metal strip |
-
2007
- 2007-10-09 JP JP2007262855A patent/JP5493260B2/en not_active Expired - Fee Related
-
2008
- 2008-09-30 AT AT08837293T patent/ATE555226T1/en active
- 2008-09-30 US US12/679,673 patent/US20100288463A1/en not_active Abandoned
- 2008-09-30 KR KR1020107007478A patent/KR20100052553A/en not_active Application Discontinuation
- 2008-09-30 EP EP08837293A patent/EP2196554B1/en active Active
- 2008-09-30 WO PCT/JP2008/068134 patent/WO2009048031A1/en active Application Filing
- 2008-09-30 CN CN2008801108872A patent/CN101821420B/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107532271A (en) * | 2015-04-20 | 2018-01-02 | 杰富意钢铁株式会社 | The manufacture device and manufacture method of hot-dip metal plated steel band |
| CN107532271B (en) * | 2015-04-20 | 2020-09-22 | 杰富意钢铁株式会社 | Apparatus and method for manufacturing hot-dip metal coated steel strip |
| CN108779543A (en) * | 2016-03-31 | 2018-11-09 | 日新制钢株式会社 | The manufacturing method of hot-dip aluminizing steel wire |
| CN110462092A (en) * | 2017-03-31 | 2019-11-15 | 杰富意钢铁株式会社 | The manufacturing method of hot-dip plating metal steel band and its manufacturing device |
| CN110462092B (en) * | 2017-03-31 | 2021-07-30 | 杰富意钢铁株式会社 | Method and apparatus for manufacturing hot-dip metal coated steel strip |
| US11313020B2 (en) | 2017-03-31 | 2022-04-26 | Jfe Steel Corporation | Method and apparatus for manufacturing hot-dip metal plated steel strip |
| CN115490414A (en) * | 2022-08-25 | 2022-12-20 | 杰讯光电(福建)有限公司 | Manufacturing process of capillary tube of optical fiber collimator |
| CN115490414B (en) * | 2022-08-25 | 2024-04-02 | 杰讯光电(福建)有限公司 | Manufacturing process of capillary tube of optical fiber collimator |
Also Published As
| Publication number | Publication date |
|---|---|
| US20100288463A1 (en) | 2010-11-18 |
| EP2196554B1 (en) | 2012-04-25 |
| JP2009091616A (en) | 2009-04-30 |
| KR20100052553A (en) | 2010-05-19 |
| EP2196554A4 (en) | 2011-02-23 |
| EP2196554A1 (en) | 2010-06-16 |
| JP5493260B2 (en) | 2014-05-14 |
| CN101821420B (en) | 2012-01-11 |
| WO2009048031A1 (en) | 2009-04-16 |
| ATE555226T1 (en) | 2012-05-15 |
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