CN102105616A - Electromagnetic device for coating flat metal products by means of continuous hot dipping, and coating process thereof - Google Patents
Electromagnetic device for coating flat metal products by means of continuous hot dipping, and coating process thereof Download PDFInfo
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- CN102105616A CN102105616A CN2009801255043A CN200980125504A CN102105616A CN 102105616 A CN102105616 A CN 102105616A CN 2009801255043 A CN2009801255043 A CN 2009801255043A CN 200980125504 A CN200980125504 A CN 200980125504A CN 102105616 A CN102105616 A CN 102105616A
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Images
Classifications
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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
- C23C2/24—Removing excess of molten coatings; Controlling or regulating the coating thickness using magnetic or electric fields
-
- 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
- C23C2/003—Apparatus
- C23C2/0034—Details related to elements immersed in bath
- C23C2/00342—Moving elements, e.g. pumps or mixers
-
- 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
- C23C2/003—Apparatus
- C23C2/0035—Means for continuously moving substrate through, into or out of the bath
-
- 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
- C23C2/003—Apparatus
- C23C2/0036—Crucibles
-
- 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
- C23C2/003—Apparatus
- C23C2/0036—Crucibles
- C23C2/00361—Crucibles characterised by structures including means for immersing or extracting the substrate through confining wall area
- C23C2/00362—Details related to seals, e.g. magnetic means
-
- 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
- C23C2/30—Fluxes or coverings on molten baths
-
- 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
- C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
- C23C2/36—Elongated material
- C23C2/40—Plates; Strips
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Coating With Molten Metal (AREA)
- Manufacturing Of Electric Cables (AREA)
Abstract
An electromagnetic device for coating flat metal products by means of continuous hot dipping in a small molten coating bath, arranged over strip guiding rollers, the device being adapted not only to contain the molten coating metal in the bath but further to substantially eliminate leakages and dripping through the lower opening at the bottom of the container, for the strip passing, by means of particular electromagnetic components.
Description
Technical field:
The present invention relates to a kind of electromagnetic equipment, it is used for applying the planar metal goods by continuous hot dipping method with coating metal, and described goods are steel band for example, and described coating metal is zinc or zinc alloy for example, the invention still further relates to the continuous hot dipping method coating processes of planar metal goods.
Background technology:
Known steel band coating process comprises it vertical by a bath of molten metal, and described metal bath keeps half suspension by the alternating magnetic field mode.
The traditional hot zincincation is a successive, and usually needs (as the starting stage) pre-treatment and described steel band of preheating before carrying out coating carefully to control its temperature.Pre-treatment chemistry and heat are improved coating and stick effect on described steel bands; heat treatment stages can be a warm-up operation or the melting operation under the controlled atmosphere, and steel band is immersed in the reducing inorganic flux so that form the anti-oxidation of protective membrane in steel strip surface in this operation.
When described steel band has carried out preheating under controlled atmosphere, it can enter the high temperature coating bath, and described coating bath is made up of zinc or zinc alloy, and described high temperature also can equal the temperature of metal bath, for example 450 ℃.
This type of hot dip galvanizing process is included in half step of suspend bathing floating coat, and described half suspends bathes and be placed in the bottom and have and allow steel band lead in the container of opening at its top.Described steel band is by the one or more guiding roll guiding that are arranged on the plating bath of molten below.Described steel band enters from bottom vertical usually and passes described fused coating material the plating bath then.Described steel band is vertically extracted out from metal bath then.
The defective of the system that known use magnetic levitation is bathed is the container bottom opening leakage from described ccontaining plating bath that has meniscus conflict under the described plating bath and cause.
The leakage eliminating down the meniscus conflict and cause is attempted in some trials.
Steel band is arranged on the bottom of the container that contains plating bath or its sidewall (when the situation of level by described steel band) usually by opening, and various inventions are used to prevent from described steel band by the opening leakage.
Some inventions adopt described steel band by opening near the refrigerative method freeze the molten metal coating, and the partly solidified opening portion closure that makes of coating.In this case, the position of solid/liquid interfaces will be controlled by the controlled cooling system of heating system and adjustable water coolant flow velocity.
Be used to freeze to close coated material and the development by the system of the electromagnetic sealing of opening shows that solid/liquid interfaces is in the position instability of described steel band by opening near described steel band, its stability can only be guaranteed that this is because joule effect and high water-cooled: the solid/liquid interfaces thermal gradient should not be lower than 1000 ℃/mm by induction heating.
The instability of solid/liquid interfaces position causes at described steel band by opening generation coated material or instantaneous solidification or fusion: do not have the mid-way to be kept if twice thermal gradient in interface is lower than above-mentioned value.These freeze seals cause sticking by the described steel strip surface of described opening, and then cause sealing wear or fracture, and this causes cured coating to be attached to described steel band, perhaps leak melting material by opening.
The problem relevant with the electromagnetic sealing device also comprises and is used for the fused coating material in partly the suspend strong rotation of required electromagnetic force of described plating bath.The rotating part of electromagnetic force in molten metal is generally used for compensating waterpower (viscous force and power), and it shows as molten metal in alternating magnetic field in the guiding movement.Another composition of electromagnetic force (potential energy part) is generally used for compensating hydraulic pressure, for example supports the fused coating material and suspends.Ratio (the f of described potential energy power and revolving force
Potential/ f
Vortical) be not less than 1 usually; Have only and to obtain the coating molten metal in this case and partly suspend.Therefore associated problem is the unstable of following meniscus, and the result causes leaking coating liquid by lower opening.
Is the suction that magnetic pole that alternating field produces causes the ferro-magnetic steel of described steel band with being arranged on described steel band by near the relevant problem of the electromagnetic equipment of the position opening.Suction on the described steel band makes its vibration even resonance, and then is embodied in the no regularity even the gaps and omissions of coat-thickness on the described steel band.Melting material raises with described steel band vibration by the possibility along bent moon leakage down.Close on described steel band does not cause described steel band mid-way in described opening by the electromagnetic equipment of opening stability if be arranged on, to have liquid metal by described opening water clock from plating bath, particularly along the limit of described steel band and along the opening water clock.If there is not corresponding problem, in some cases, the liquid leakproof can arrive 98% or 100%, is clearly but leak in all cases.
With the problem of machinery that becomes known for continuous hot dipping method coated steel strip or electromagnetic equipment be uncontrollably to generate Fe
nZn
mCompound between shaped metal, it is regarded as the result that reacts between the iron zinc.Fe
nZn
mAlloy and is positioned at the reciprocal junction zone mainly between described steel strip surface and Zn coating.Fe
nZn
mParticle or break away from described steel band or directly generate in described plating bath because there is dissolved iron all the time, and is mixed into the fused zinc coating.These Fe
nZn
mParticle is called " grit ", is a quality problems for cated steel band.The generation of grit must from the steel band coat system, eliminate or these fusion plating bath in reject.
Other are the time length of described steel band in the metal coating bath with known continuous hot dipping method steel band coating with the relevant problem of machinery or electromagnetic equipment, by surpassing or equaling for 1 second.In this case, on described steel strip surface, develop out the intermetallic Fe of suitable thickness rapidly
nZn
mCompound; Particularly stick so that obtain the γ layer of solid surface in the good coating of needs, can not surpass specific thicknesses, otherwise can cause the coating fragility, promptly coating no longer forms.
Therefore need provide a kind of is the electromagnetic equipment and the corresponding coating processes of planar metal article coatings by continuous hot dipping method, to overcome aforesaid drawbacks.
Summary of the invention:
Major objective of the present invention is to provide a kind of electromagnetic equipment, it is used for by using continuous hot dipping method to apply the planar metal goods at a little plating bath of molten above being positioned at steel band guiding roll, it not only is suitable for the fused coating material is contained in the plating bath, but also has eliminated the water clock at the container lower ending opening place of containing plating bath by specific electromagnetic assembly.
Another target of the present invention provides the technology that is applied the planar metal goods by continuous hot dipping method, the invalid large size plating bath of described technology, also need not one or more rolls are entered in the plating bath with the described steel band that leads, directly enter small size at steel band described in the described technology and partly suspend in the coating bath and the induced current of plating bath bottom is corrected to prevent water clock.
The present invention provides a kind of electromagnetic equipment that passes through to use continuous hot dipping method coating planar metal goods in bath of molten metal based on claim 1 for realizing above-mentioned target, and it comprises:
-one vertical container, it is used to hold described metal bath, and its bottom is provided with a longitudinal opening and is used for along metal products charging face metal products being imported described metal bath,
-one electromagnetic inductor; It is arranged at around the described container and is suitable for generating the magnetic flux of crossing over metal bath; Described inductor has an interior profile; It is in the face of metallic article charging face; The outer section of contiguous described container; Described section is so that can be with described flux concentration in described container bottom; And then induce induced-current longitudinally to pass through described container bottom; And then in described plating bath bottom generation maximum intensity electromagnetic force; To obtain plating bath with respect to the container bottom suspension and to define a lower meniscus
Wherein be provided with correction device, be used to proofread and correct down the terminal induced current of meniscus, and then make described electromagnetic force in whole meniscus elongated area equilibrium down.
Based on the present invention on the other hand, provide a kind of continuous hot dipping method of passing through based on claim 17 being the method for planar metal article coatings at bath of molten metal, it comprises the steps:
-the planar metal goods are imported described bath of molten metal along charging face by the longitudinal opening of being located at the vertical container bottom that holds described metal bath,
The magnetic flux of metal bath is passed through in-generation, container bottom is longitudinally passed through to induce induced current in its narrow below that is concentrated in container, and in described metal bath bottom formation maximum strength electromagnetic force, and then obtain the following meniscus that described metal bath suspends with respect to container bottom and limits described metal bath
Wherein induced current is proofreaied and correct, made described electromagnetic force in the whole extension area equilibrium of meniscus down at following meniscus.
Equipment of the present invention comprises the little coating bath of a guiding roll top that is arranged on described steel band, and it has whole advantages of not using large size plating bath (contain can reach 400 tons of fused coating materials, the guiding roll immerses in the melting material).
These advantages comprise:
-system is more flexible, promptly when needing replacing to contain the container of plating bath;
-control the excessive formation of intermetallic compound better, because the time of described steel band in small-sized plating bath is shorter;
-temperature and plating bath component be homogeneous more;
-longer roll campaign, this is because they need not to immerse in the plating bath, so bearing and roll weather resistance are better, have also avoided the vibration of described steel band,
-reduce required maintenance, and then boost productivity.
In addition, this equipment not only makes the fused coating material not leak in plating bath, and also note has not been eliminated from the steel band below and leaked by opening.The minimizing of leaking realizes by native system certain electric magnet assembly, hereinafter describes in detail.
The container shape from the beginning to the end that contains the molten metal coating bath has the sidewall of assembling by opening direction towards the set described steel band of container downwards.The electromagnet relevant with container has a pair ofly to be faced mutually, reverse magnetic pole, the shape that each is adjacent to the sidewall separately of container and follows described sidewall separately substantially.
The structure that contains the magnetic pole of container of molten metal and sidewall is formed as to be convenient to the magneticinduction that electromagnet generates and to maximize at container bottom, and then in coating bath bottom vertical direction magnetism intensity maximum, passes through opening molten metal is pushed away described steel band.
The magnetic force of vertical direction is the potential energy type substantially and generates by the whole length of opening is balanced along described steel band, so that suppress liquid metal circulating near the meniscus down, makes that meniscus (being described steel band entry zone in coating bath) is more stable.
Electromagnet has the effect of stirring metal bath usually, and this stirring movement can cause metal bath generation leakage problems: the pressure increase that the part of metal bath rotatablely moves and can make down meniscus, and cause it to become an additional head, must be by local support.
According to the present invention, the use of damping method helps separately and disturbs by the vortex in the molten metal volume of electromagnet generation.Damping method comprises use dividing plate or curved surface, and it can change the circulation of molten metal in container, thereby stops stirring movement to take place there.
Dividing plate is vertical substantially with the charging plane in the affiliated steel band, and its stupalith by this locality produces, and is installed in the upper and lower of container, thereby can hold melting metal layer.No matter meniscus on molten metal still is following meniscus, dividing plate can cause low-speed motion.Simultaneously, dividing plate can also be eliminated the intensive local current ring that is caused by the electromagnet in the melting metal layer, and it can be merged into a single large-scale electric current loop.The bottom of this single electric current loop is straight, and parallel with following meniscus, to obtain the support electromagnetic force that is evenly distributed on down meniscus.
Although be installed in the mechanical guides of container bottom with half levitation melting layer material, the peristome central authorities that can make described steel band be fixed on container remain unchanged, but electromagnet still can attract the described steel band opposite pole that it faces towards any to move, cause that described steel band rolls in container, produce a kind of undesirable vibratory movement.Attract described steel band towards the cycle gravitation that the arbitrary Ghandler motion in the two poles of the earth moves, may cause it to produce resonance, even it is broken.This gravitation occurs in down the below of meniscus, is decided by to be distributed in magnetic flux intensity there.The gravitation that the shielding harness of being made by high conductivity material is used to stop magnetic flux distributions and reduces described steel band.
Based on first favourable variable of the present invention, the splitter that should comprise conduction of current parts that do not contact with metal bath, described conducting parts will be connected with electric current water conservancy diversion terminal, and be installed in two ends of the longitudinal opening of container bottom, when contacting with bath of molten metal with box lunch, can locally produce electric current, described wire terminal will be made by bath of molten metal-robust material production.
The conductor wire joint does not contact with molten metal with high conductivity Ampereconductors or splitter, its electronic being connected in the wire terminal, when these be by the time become the electric current supply time, will and contain the container of melting metal layer around total magnetic flux.Ampereconductors or splitter can conduct all induced currents by the generation of electromagnet magnetic flux.Electric current described above circulates between the conductor wire joint along the bottom of molten metal coating bath.Electric current combines with the magnetic flux that electromagnet produced by molten metal bottom, and purpose is the magnetic force that risen in the molten metal bottom in order to produce, and it is separated with the opening of container bottom, thereby can define down meniscus.Use these conductor wire joints can eliminate down the current distortion of meniscus edge, guarantee only to have the vertical component of suspending power to exist there.Therefore, the effusion of melting material can be eliminated away from the edge of described steel band by opening very easily.Simultaneously, wire terminal that is connected with them and splitter in the place that molten metal bottom expection will arrive, are compared current concentration with the magnetic force that does not use these Ampereconductors and produced, and the magnetic force efficient that makes progress that is here produced will increase greatly.
On the contrary, in second favourable variable of the present invention, provide the shaping that matches magnet assembly, so that define " magnetic window ", purpose is in order to adjust the induced current of plating bath of molten free surface or following meniscus end, the efficient of magnetic force thereby increase makes progress.
Another feature of the present invention is, by using the closed cycle circuit of described melting material, can constantly clean the melting layer material, the melting furnaces that wherein comprise a modulation melting metal layer at least, mechanical type or magnetic waterpower type recycle pump and a ceramic deposition filter, before the melting layer alloy was added in the galvanizer container, grit particle wherein can be gone out by strainer is separated very easily.
Be installed in container bottom, be used for holding the closed mechanical devices of described steel band by near the melting layer the opening another feature of the present invention and advantage.Closed mechanism like this allows to dose melting layer in container before coating production line starts.
Dependent claims has been described the preferred embodiments of the present invention.
Description of drawings:
According to by shown in plating bath of molten in use hot dipping method, give to electroplate electromagnetic equipment preferred of planar metal article coatings but the detailed description of nonexcludability embodiment, and accompanying drawing, it is more apparent that other features and advantages of the present invention will become, wherein:
Fig. 1 has described the chart based on first embodiment of system of the present invention;
Fig. 2 has described the skeleton view based on container of the present invention and the electromagnet that uses in electromagnetic equipment;
Fig. 3 has described the front view based on device of the present invention;
Fig. 4 has described the sectional view that installs among Fig. 3;
Fig. 5 described based on of the present invention in device the skeleton view of employed container portions;
Fig. 6 has described the cross sectional side view of container portions among Fig. 5;
Fig. 7 and 8 has described the two sides sectional view of container;
Fig. 9 has described the front view of the container that has splitter;
Figure 10 has described the sectional view based on the yoke embodiment of device inductor block of the present invention;
Figure 11 has described the half-container sectional view that has splitter that part shows in section;
Figure 12 has described the splitter of described steel band by open end and the effect that produces during the conductor wire joint.
Figure 13 has described the sectional view of the further embodiment of half container with " magnetic window ";
Figure 14 has described the enlarged front view based on device of the present invention.
Reference number identical among the figure is represented identical key element or integral part.
Embodiment:
Shown in Figure 1 is uses the successive hot dipping method to come system implementation plan as the planar metal article coatings in bath of molten metal, and such system comprises:
Target electromagnetic equipment 1 of the present invention, when coating was zinc, being also referred to as was galvanizer, the container 11 that it comprises inductor block 3 and holds bath of molten metal;
-be near the current feed device 2 of inductor block 3 feeds the coiling coil 4;
-heating/melting furnaces 5, it is provided with and is installed in the cupola well so that invaded recycle pump 6 in the melting layer material in the kiln;
-a kind ofly be used to purify the melt coating material, and the deposition filter 7 that suitably heats;
-make the melting layer material flow to melting furnaces 5 from galvanizer 1, flow to deposition filter 7 from melting furnaces 5 then, turn back to that galvanizer 1 circulates and the pipe 8 of the suitable heating used from deposition filter 7 at last.
-be used for the closed mechanism 10 of container 11 in the stopping device, when operation starts, will fill the melting layer material therein;
The resorber 9 of-coated material that runs off when being used for being absorbed in operation and beginning, its be installed in closed mechanism 10 below;
-being used for controlling the control unit 12 that each key element in the closed cycle circuit independently heats, it comprises pipe 8, has the heating/melting furnaces 5 of recycle pump 6, strainer 7 and resorber 9.
It is with zinc or zinc alloy continuously that system among Fig. 1 can be used for, or aluminium, aluminium alloy, and magnesium, silicon, tin, lead and alloy thereof are the metal strip coating.
Now according to Fig. 1,3 and 4, successive metal strip 13 is eased out from group's (not shown), carries out conventional pretreatment.After the pre-treatment, by using guiding roll 15, described steel band 13 becomes towards the direction of longitudinal opening or crack 16 (being installed in the bottom of container 11 in the device 1).
No matter be the coat-thickness control device 19 of air-driven type or electromagnetic type, all be used to obtain the expection ground mass on the described steel band 14 usually, it is installed in the top of container 11.The spool (not shown) is installed in the downstream of control device 19, and the refrigerative metal strip is removed from spool after being curled into one again on the spool.
With reference to Fig. 3-Fig. 9 with more detailed description container 11.
Shown in Fig. 6 and 9, for example,, control the level attitude of the melting material in the container 11 by once or overflow more frequently 51, it is connected with heating/molten cellar for storing things 5 by the heating tube (not shown).
As shown in Figure 4, it has described the sectional view with the vertical vertical plane in plane that is defined by described steel band 13, and container 11 is described that basically becoming is an extended funnel.
The narrower part 20 of container 11 has longitudinal slot 49, it is installed in the bottom of described narrower part sidewall edge, when the metal bath suspension system is opened, promptly when above-mentioned feeder equipment 2 is activated, it can be used to guide the integral part of melting metal layer (or simple liquid metal) to rotate up mobile, described integral part moves down along the sidewall of container 11, reduced the pressure of local dynamic assembly to meniscus under the liquid metal, thereby impel so following meniscus under the equally distributed prerequisite of electromagnetic force that makes progress, can better evenly be promoted.Bottom with respect to container 11, the degree of depth of described groove 49 is the 10-100 millimeter, the suitable distance of its installation preferably remains between the 30-60 millimeter, and purpose is for the bottom surface that makes metal bath 17 has better stability, thereby reduces or the seepage phenomenon appears in the material of stopping described bottom surface.
According to Fig. 2,3,4 and 9, container 11 is made up of two and half containers 22, and its corresponding sides separately link together along vertical flange.When linking together, two and half containers 22 have determined to have groove-shaped elongation container 11.
As Fig. 6-shown in Figure 8, container 11 has a pair of longitudinal side wall 23 and pair of end walls 24, and wherein each all extends between the corresponding end of sidewall 23.Sidewall 23 has defined the extended doline.
The middle portion 25 of the container 11 shown in Fig. 4 is installed in relative wider portion 21 and is top, the position of the bottom of relative narrower part 20, and it comprises a pair of longitudinal side wall 26 that is included in the wall 23, shrinks towards the direction of relative narrower part 20.The structure of pinch wall 26 and geometrical shape are key characters of the present invention, because except magnetic pole extends shape, its feasible inductor block by container can produce magneticinduction, and the bottom at container can be so that the magneticinduction maximization, thereby impel vertical direction to produce the strongest electromagnetic force at coating bath bottom or following meniscus, described power can make molten metal separate with opening when described steel band passes through.The structure of sidewall 26 and geometrical shape are key characters of the present invention, because except magnetic pole extends shape, its feasible inductor block by container can produce magneticinduction, and the bottom at container can be so that the magneticinduction maximization, thereby impel vertical direction to produce the strongest electromagnetic force at coating bath bottom or following meniscus, when described steel band passed through, described power can make molten metal separate with opening.
The material that is used to make container 11 may comprise fire-resistant ferro-magnetic dielectric materials, and for example relative magnetic permeability is μ
*The pottery of=25-30 and the mixing material of iron powder, and ceramic dielectric material or nonmagnetic material with low electrical conductivity, as, the 316L stainless steel.Available materials also may be high temperature resistant and matrix material heat shock resistance, as by ceramic binder or cementing glass, pottery or silica fibre together.Container 11 also may be made by metal parts and ceramic component.
Fig. 6 shows the internal structure of container 11: the narrow positions 20 of container comprises the passage 27 of described steel band; One end of the passage 27 of described steel band comprises the opening 16 of container bottom.Passage 27 is made of two relative vertical walls 28 (only showing in two walls among Fig. 6) and a pair of relative end wall 29; This pair of end wall 29 run through wall 28 opposite ends between.
According to Fig. 2,3,10,14, can carry out more careful explanation to the inductor block 3 of galvanizer 1.
The yoke of the inductor block 3 of galvanizer comprises an external member 31; From orthographic plan, this outside member 31 is a rectangular framework, is made and comprised the longitudinal side wall 32 and the pair of end walls 33 of a pair of mutual opposition by ferromagnetic material; End wall 33 is through between the two ends of the correspondence of sidewall 32.Sidewall 32 and end wall 33 form the internal space 34 of an arranged vertical, and this spatial upper/lower terminal is open edge limited by 35 and 36 respectively.
The yoke of the inductor block 3 of galvanizer also comprises a pair of magnetic pole 37; Each magnetic pole is all made and is installed in by ferromagnetic material on the corresponding side walls 32 of the external member 31 that is positioned at vertical space 34 inside.Each magnetic pole 37 all in the space 34 inside extend and stop at end face 38 places of the utmost point at least extending to another magnetic pole; The end face 38 of the end face 38 of the utmost point and another magnetic pole 37 (Figure 10) is relative and in opposite directions.Magnetic pole 37 forms an opening 39 placing container 11; Opposing end faces 38 becomes parts of opening 39, and the narrow positions 20 of described container just is inserted in these parts.
Shown in Fig. 2,3,14, hot-wire coil 4 is wrapped on each magnetic pole 37.According to the preferred version of present invention, should can in the magnetic pole 37 that is twined by coil 4, produce a magnetic field like this by feeder equipment 2 time-dependent current when each coil 4 provides.In feeder equipment 2, electric current, voltage, frequency and power can change; Feeder equipment 2 can also change the electric power of supplying with coil 4.So feeder equipment 2 can be controlled the intensity and the quality in the magnetic field that the inductor block 3 by galvanizer produced.
The sense of current in the coil 4 on each magnetic pole 37 is controlled, so opening 39 is all passed from same direction in the magnetic field that coil produced on each magnetic pole.
The yoke of the inductor block 3 of galvanizer is made by a kind of common ferromagnetic material; This ferromagnetic material can be ferrite or other magnetoelectric material, but preferably conducts electricity steel foil.
As shown in figure 10, the yoke of the inductor block 3 of galvanizer comprises two and half magnets 41; Each half magnet 41 all has the part that roughly is " E " shape of an along continuous straight runs.
Shown in Fig. 7 and 10, each end face 38 of the magnetic pole or the utmost point 37 all is installed in corresponding longitudinal side wall 23 position adjacent with container 11, particularly at the narrow positions 20 of container and the very close above-mentioned sidewall 23 of sidewall 26 place's end faces 38 that intersects.In this programme, the shape of polar each end face 38 should be as follows: should be roughly the same with the corresponding section of adjacent sidewall 23, and particularly along the position of the narrow positions 20 that intersects sidewall 26 and container.
Distance between the magnetic pole end face 38 relatively, in opposite directions is in container narrow positions or regional 20 place's minimums of container bottom adjacent openings 16.This minor increment has defined the minimum value of opening 39; The magnetic induction density maximum at opening 39 places.On the contrary, if the opening between the magnetic pole 37 is big more, the magnetic induction density in then regional 20 downstreams is then low more.
In addition because the magnetic flux resistance (magnetic resistance) in freeboard is lower than the magnetic flux resistance of the molten metal of metal bath 17, magnetic flux pass easily magnetic pole end face 38 accumulate in then metal bath 17 in the passage 27 under; This is the purposes (Fig. 4) that is positioned at the opening 16 of container bottom.Therefore, time-dependent current for by coil 4 specific the time is compared with other zone of molten metal metal bath 17, and the magnetic force that inductor block 3 puts on metal bath is in the narrow positions 20 of container and stronger near the position of container bottom opening 16.Generally speaking, can by change to supply with inductor block the time time-dependent current strength of current and frequency regulate magnetic power (and magnetic flux).
In order to produce described magnetic field concentration effect in the container bottom narrow positions 20 that is positioned at the metal bath bottom, the Schwellenwert of opening 39 and the ratio between the maximum should be preferably between 0.3 to 0.4 between 0.1 to 0.7 between the magnetic pole 37.In addition, the overall dimension that is positioned at the magnetic opening vertical component on inductor block 3 tops should be a constant, equals the 0.2-0.6 of the height of magnetic pole 37, preferably 0.35-0.45.
Corresponding with the bottom narrow positions 20 of container, total cross-sectional area of the lower section of magnetic opening 39 must be the magnetic opening 39 between magnetic pole 37 the maximum cross-section area 5%～20%, preferably 8%～12%.The wall body that on the lower section of magnetic opening 39, has approximate vertical; At crossing wall body 26 places of container 11, the magnetic opening extends with the wall body on the magnetic pole 37, and forms one 25 ° to 80 ° inclination angle with horizontal plane, and the inclination angle is preferably between 40 ° to 80 °.Half region should be preferably between 7%～10% between 3%～15% with respect to the relative extend perpendicular of the total height of magnetic pole 37.
The longitudinal extension of magnetic pole 37 or width must greater than or equal the longitudinal extension of the opening 16 of passage 27 at least.
By the time time-dependent current magnetic flux that produces pass opening 39 and respond to electric current in the metal bath 17.According to Figure 11, the lower section electric current that is used for transmitting faradic path 42 is introduced directly in metal alloy or the fused coating material, and path 42 can be conducted electricity like this.
Fig. 5,6,9 and 11 show the first string of the electromagnetic equipment of the present invention that is used for the metallizing band.
Above-mentioned the first string comprises that use splitter or bypass are so that carry out rectification to the induced current along free surface, metal bath bottom.Above-mentioned splitter comprises vertical substantially conductive component or conductor 44, substantially horizontal conductive component or conductor 43, it is connected to each other with vertical conduction parts or conductor 44, and the molten metal metal bath contacts and is installed in the conductive terminal 47 of the end of vertical passage 27.
According to Fig. 5 and Fig. 6, the vertical conductor 44 of splitter all is the L shaped element of being made by electro-conductive material usually; If conductor 44 and metal bath insulation, then conductor 44 can be made of copper, if conductor 44 links to each other with metal bath, then conductor 44 can be made by stainless steel or graphite or other electro-conductive material.
These vertical conductors 44 are made up of the conductive terminal 47 of a pair of fusion coating material resistance, for example, are become by silicon or carbonization copper, are perhaps made by graphite, pyrolytic graphite, determine their L shaped shorter parts endways.These terminals or electrode 47 allow to be connected with external power source near the metal bath 17 in zone 20 in the container of passage 27.
These electrodes 47 need not cooling, therefore avoid the phenomenon of the partial condensation of fusion coating material in the passage 27, can make its adhesion solidify coating and take described steel band like this, thereby utilize container breach forward that it is blocked.
In embodiment illustrated in fig. 11, induced current flows through conductor 44,43 rather than circulation in metal bath 17, and induced current is influenced by conductor 44 to flow into the end place of container 11 in addition, for example, and in the inside of bath of molten metal 17 or the following meniscus place of metal bath itself.
These current-carrying parts 43,44 and 47 directly gather the induced current at close meniscus place down so that increase the current potential of electromagnetic force.The induced current that suppresses other parts of fusion coating material makes the metal bath movement slows down with the induced current that gathers near following meniscus.In addition, in filling with container 11 processes, when the quantity not sufficient of liquid metal in the metal bath when producing suspending power, meniscus is useful under being collected at of electric current.
Induced current in the melting material, in the level 43 of splitter and vertical 44 conductors merges along the following meniscus of melt substance, and extends to the bottom of metal bath 17, becomes horizontal direction on vertically and near container bottom opening 16 at container 11.Here the direction of sense of current of Dao Ruing and local flux amount meets at right angles.Therefore, magnetic flux and induced current intersect at the horizontal plane place, thereby produce electromagnetic force upwards.These electromagnetic forces promote metal bath 17 parts of container bottoms near opening 16 places, for example, and the bottom portion of metal bath 17, or the part that makes progress away from opening 16.This influence is called magnetic levitation, i.e. the following meniscus of metal bath 17.
This magneticinduction increases gradually so that arrives the maximum of electromagnetic pole than low edge to the bottom.
The existence of the following meniscus of the conducting material of magnetic flux density that increases progressively downwards and fusion coating material produces a kind of effect energetically, and promptly when melt substance moved down, electromagnetic anchorage force was increasing gradually.
A kind of magnetic levitation that is caused by the power that makes progress that puts on by the bath of molten metal at opening 16 places becomes an important factor that influences molten metal material in the metal bath.
Magnetic levitation described above may produce a kind of volume and be higher than 98% metal bath 17.The volume of the metal bath 17 that this aforementioned magnetic levitation forms can effectively prevent the water clock that reduces passage 27 sidewalls 28 and end wall 29 by the loss and the part of described steel band by the fused coating material of opening 16.(Fig. 6 and Figure 11)
These eddy current have a kind of tributary along the common rising of described steel band, illustrate that heat diffusion and chemodiffusional intensity are reducing between strip and coating.Simultaneously, dual eddy current has the flow of the straight-through described steel band edge of two bursts of declines.The dynamic pressure of fused coating flow has reduced the lifting force of described steel band edge, and facilitates spilling of container 11 bottom openings 16 places, especially increases the possibility that the melting material at described steel band passage 27 edges spills.(as Fig. 4 and shown in Figure 6)
In the container 11 dual eddy current (as Fig. 4, shown in 6,7) of breaking and being caused by plane flat member 45 and 46 longitudinally, all sidewall 23 is outstanding longitudinally from container 11 to said element for each.
Especially Shang Mian a pair of flat member 45 may obtain at the upper zone of the wideer part 21 of container adjusting, for example, and near the upper end of part 21.
In first variant (Fig. 7), then be that the upper wide part that following flat member 46 is set near container divides 21.(not shown) in second variant, following flat member 46 can be arranged on the stenosis 20 of container 11.
Gauged influences to eddy current in the container 11 are dual: from the essence of hydromagnetics is partial, and is comprehensive from the essence of ydrodynamics.These two kinds of factors have caused important variation in the flow velocity that distributes the coated material material.
Because the shunting that container 11 upper wide parts divide the magnetic flux that flat member 45 causes on 21, opening part between flat member 45 produces downward electromagnetic force, has changed the round-robin direction at the eddy current between above-mentioned flat member 45 and 46: fused coating to and the zone in above and below plane component between the reverse direction of described steel band mobile.In addition, described flat member 45 is being worked as aft cover plate with 46, limits the eddy current of the broader part 21 of container and with itself and following meniscus isolation with this.
Following flat member 46 can have a vertically part or throwed for 46 ' (as shown in Figure 8) longitudinally, and vertical direction is extended from the upper epidermis of parts 46, it is maximum extend identical with described parts 46 width.Described vertical component 46 ' is used for departing from or disperseing powerful jet flow, promotes the process of filling with of container 17 simultaneously.
Comprising turbulent flat member 45 and 46 is made of nonmagnetic material or light railway magnet stupalith.They can also be made up of the metallic substance that electroconductibility is lower than the melting material in the metal bath 17, for example, and the 316L stainless steel.
The flat member 45 of fore-and-aft plane and the parts 46 of fore-and-aft plane all are substantially parallel and level, and preferably its lateral dimension opening that can form a minimum makes described steel band pass through between two flat member 45 and two parts 46.
The influence of dual eddy current in the fused coating on the following meniscus of following flat member 46 effective eliminations.Above flat member 45 cover fused coating, prevent to spray with this, and the steel band that material is pushed to rise.
Chart explaining above among Figure 12 the water clock mechanism at end wall 29 places of container 11 foot passages 27.In the time of end wall 29 insulating, faradic lines become curve at insulating wall 29 places, and the vertical component of electromagnetic force correspondingly reduces here, and therefore, the possibility that liquid metal leaks has just occurred.
It is that the inventive method is desired that end wall 29 places exist conductive terminal or electrode 47, when the fused coating material is filled into container bottom and is placed in wherein by a close mechanism or mechanical seal 10, as shown in figure 14.Well is connected between conductive wall 29 and molten metal make induced current have one with metal bath 17 in the rectangular magnetic line of force of wall and pass the described wall 29 that the support electromagnetism is unified level, shown in Figure 12 intermediary chart.
In this case, the conductive terminal 47 of the end wall 29 of qualification passage 27 belongs to shunting and limits a faradic low-resistance conductive path that flows through metal bath 17 bottoms.Therefore, electromagnetic force only has along vertical, the unified element of the whole opening 16 of container bottom, and reduces the whirlpool element of electromagnetic force, so that reduces near moving of the metal bath meniscus down.
When the electric current on the coil 4 increased, following meniscus can move to electrode more than 47, and electric current can flow and keep away electrode and partly entered electrode on the top with part simultaneously.(shown in low chart among Figure 12) equally in this case, can obtain the isostatic electromagnetic force.
In addition, since exist down flat member 46 with and go up possible perpendicular projection, make the shunting and the close mechanism 10 that can not comprise electronic conduction element 47,43 and 44 when filling with container 11, the required magnetic field of meniscus is approximately the twice that has shunting but raise down.
By graphite system being provided and directly connecting the conductive terminal 47 and the conductor 44 of metal bath, from the metal bath material, obtain an advantage in the low electric conductivity of graphite itself probably, because only when filling with container 11, electric current and support electromagnetism just are concentrated in the low surface of adjacent terminals 47 metal baths; And when container is filled with, the reallocation stability of lower surface that promotes to hang in the sky more equably.
In fact, can electromagnetic oven be concentrated on the near-end of the end wall 29 of passage 27, thereby perhaps make described electromagnetic force equilibrium along all passages 27 by using different electronic conductive materials to make terminal 47 with respect to the center.For example, in order to concentrate described electromagnetic force, can use stainless steel or other electroconductibility and belong to the metal that the bath material is similar or be higher than; Yet, might use graphite or other that material than low electric conductivity is arranged in order to make described power equilibrium.
According to second embodiment among Figure 13, the faradic function of revising the whole bottom of metal bath or low free surface or meniscus realizes that by suitable magnet assembly opposite configuration is so that determine " magnetic window ".These insulating magnet assemblies are located in the container 11 and its structure is suitable for determining a tetragonal magnetic circuit, its be used for concentrating in the described metal bath material magnetic flux in circuit inner and described induced current outside circuit.
The bottom of described magnetic circuit is positioned at top, container 11 bottoms 0-50mm, preferred 10-15mm.
With reference to first preferred variation, these " magnetic windows " can be made into the form of two pairs of magnet assemblies 54 and 55 (Figure 13), each is integrated, fixes or anchor to half container 22 to the parts in assembly 54 and 55, and its surface is parallel to the charging plane of described steel band, contacts or does not contact with another assembly 54 installed in other half of one container 22 and the apparent surface of 55 (not shown) corresponding components.
In variation as shown in figure 13, magnetic circuit or " magnetic window " are by described two pairs of magnet assemblies 54,55 and be that two pairs of 45,46 of vertical flat member define.
The variant of other described magnetic window can comprise:
-two solid component, on the described steel band charging planar left side and the right side, integration is connected on the container, for example is embedded between two half of one container 22;
-or pipe, its structure is convenient to define a rectangular frame, and it is integrated, fixing or grappling, for example: be embedded between two half of one container 22.
These " magnetic windows " can also can be made with different materials with making with container 11 and flat member 45 and 46 identical materials.But any material does not conduct electricity.
If the employing stupalith, magnet assembly 54 and 55 will perhaps add as separable modules along with container 11 continuous casting together and fixing.Magnet assembly 54 and 55 should be that part is made up of the soft ferromagnetic material at least.For example, by direct insertion ferromagnetic material line, these ferromagnetic material lines are electrical isolation each other, then this line are arranged on the direction that parallels with the magnetic flux direction of mainly passing in the metal bath 17.
Induced current has well been avoided two " magnetic windows ", each " magnetic window " all is arranged in charging planar one side of described steel band, because these windows, the bottom of induced current circle is straight so that induced current accumulates in down near the meniscus, therefore increases the potential energy part of electromagnetic force.
The height of magnetic window is equal to or less than the distance between flat member 45 and the corresponding flat member 46, and the magnetic window is configured in its opposed facing interior wall 56,57 and the flat member 46 side of at least one and is close or contacts.Distance between the opposed facing interior wall 56 and 57 or equal the width of the metal strip 13 of plated film soon, or greater than this width.The wall 56 ', 57 ' opposite with opposed facing interior wall 56 and 57 also has the phase mutual edge distance of a maximum, and is equivalent to extend axially 37 longitudinal extension.The value that increases is equivalent to the opening minimum value between the opposed facing pole-face 38.
Scheme shown in Figure 13 has limited current diverter of describing before 43,44 and 47 application need.
Another way is exactly, two kinds are used for the faradic system of rectification and may be used to place near the following meniscus 17 of metal bath 17 together, just current diverter and magnetic window, so, only in the first step of this process, just use current diverter, be called as paired end wall 28 and 29 (Fig. 6) at the following meniscus of the metal bath 17 of 27 li in passage.When this when down meniscus moves to passage 27, current diverter is revival not just, has only the magnetic window to work independently.
As above-mentioned, by the magnetic field that produces by inductor block 3, and the interaction between the induced current that in metal bath 17, produces and produced magnetic force, this power can make the opening 16 of bath of molten metal 17 away from container bottom, comprises that metal bath 17 bottoms are by passage 27.
On the optional position of container 11 longitudinal stretchings, the magnetic force that the bottom of metal bath 17 occurs makes progress, and this depends on the amount of (a) local flux amount, and the local current intensity that (b) produces in this position.Pole-face 38 has been guaranteed this locational magnetic flux.As above-mentioned, electrical lead 43 and 44 directly makes the induced electricity that is produced by inductor block 3 spread to terminal or electrode 47, and is adjoining with the bottom of container 11.Compare when not having conductor, used conductor 43 and 44 after, induced current accumulates in the limit portion of passage 27 more.This has just increased passage 27 afterbodys and has produced magnetic force upwards, finally will reduce dripping of container and leak, especially along the limit portion of passage 27.
As above-mentioned, the magnetic flux intensity that is obtained by inductor block 3 obtains peaked position, just the position of 37 opening 39 minimums of axial expansion.Similarly, the induced current that produces in metal bath 17 is stronger relatively, and opening 39 is less relatively herein, especially near the position of metal bath 17 bottoms.In addition, terminal 47 can be divided the gathering induced current near the higher part of passage 27 along metal bath 17 bottoms.
Except producing magnetic force, because joule effect, the running of inductor block 3 can make a large amount of melt coatings and ferro- magnetic strip 13,14 produce heat.Such melting material heat is very strong, although a large amount of heat leaks is arranged, especially at the pipeline position of deposition filter 7.
Advantageously, the vertical longitudinal component of flat member 46 or projection 46 ' can be used for being provided with refrigerator 48 curved tubes than lower part.
More benefit can be led fender 53 with the electricity of supplying with and describe, and shown in Fig. 1 and 14, this will stop magnetic flux to pass described steel band, and reduces Marx's Wei magnetism.The setting of this fender 53 is similar to device 10, is suitable for supporting vibroshock 9.
The embodiment of the invention has as shown in figure 14 described to be used to begin the seal closure mechanism of continuous hot dipping method coating procedure.
With reference to Figure 14, close mechanism 10 promotes platform 52 by two and a soft refractory pipe is formed, it can be crushed by external force, this pressure be by two platforms 52 move round about apply, the pipe that promotes simultaneously to be made by soft refractory materials causes container 11 terminal mechanical closure in the motion of bottom opening 16 ingress of container 11 and described steel band 13, before starting at described steel band 13, this container is full of under the situation of fused coating material, can occur.Or other situation following time also can occur, as: lack the energy that offers inductor block.
In case inductor block 3 is activated by magnetic field, half of metal bath suspends and just comes into operation, and close mechanism 10 just is opened, and described steel band 13 can move with a direction perpendicular to metal bath 17.
Because soft refractory tube, preferably pottery is starting material, and in the time of close mechanism 10 runnings, this pipe can partly scribble the solid solution coated material.Before finishing subsequently and after by the melting material in vibrator 9 empty container 11, feeder equipment 2 must activate in the mode of high frequency, as can be up to 400 hertz, purpose is to heat by inductor block, and solid solution material residual on the soft vitrified pipe is melted, and the flux of disperse is realized this result by inductor block 3.
Claims (17)
1. an electromagnetic equipment is given the planar metal article coatings by use hot dipping method in bath of molten metal (17) lining, comprising:
-one vertical container (11) that is used for ccontaining described metal bath, its bottom is provided with a longitudinal opening (16), along described goods charging plane it is imported described metal bath by described opening,
-one is arranged on container, (11) electromagnetic inductor on every side, (3), it is suitable for producing and passes through described metal bath, (17) magnetic flux, described inductor block interior profile is in the face of the charging plane of described metal products, the outside section of described container in succession, (11), described section concentrates at the narrow bottom of container bottom with described magnetic flux, (20), thereby vertically produce and pass through container, (11) Di Bu induced current, and then at this metal bath, (17) bottom produces the strongest electromagnetic force, make described metal bath suspend and form a following meniscus with respect to container bottom
-one correction device is used to proofread and correct the induced current at following meniscus, so that described induced current is balanced in the described whole extension area of meniscus down.
2. equipment as claimed in claim 1, wherein be used to proofread and correct faradic correction device at following meniscus, be provided with and the discontiguous electric current water diversion part (43 of metal bath (17), 44), described electric current water diversion part (43,44) be connected to be located at described longitudinal opening (16) two end wall (29) the electric current water conservancy diversion terminals (47) that go up and contact with described bath of molten metal to small part separately, described electric current water conservancy diversion terminal (47) is made by the bath of molten metal robust material.
3. as equipment as described in the claim 2, wherein said bath of molten metal robust material can comprise a kind of in the following material at least: silicon carbide, carbonization copper, blacklead, pyrolysis blacklead.
4. as claim 2 or 3 described equipment, wherein said electric current water diversion part comprises a pair of vertical conductor (44), it is set at the associated end of two and half containers (22) that constitute container (11), each vertical conductor is connected the end wall separately (24) of container (11), and described vertical conductor interconnects by the outside a pair of horizontal conductor (43) of container (11).
5. equipment as claimed in claim 4, wherein said vertical conductor (44) are basic L type, and described water conservancy diversion conductive terminal (47) is located on the galianconism of described L type.
6. equipment as claimed in claim 4, wherein said horizontal electric installation (43) links to each other with container (11) outer wall.
7. the described equipment of arbitrary as described above claim, wherein said container (11) are provided with wide top (21) and two pairs of vertical flat member (45,46), and every pair of longitudinal side wall from described container (11) (23) is outstanding in the described parts.
8. equipment as claimed in claim 7, the described longitudinal extension (L) of each is than the width of planar metal goods (13) 0.1H greatly at least in wherein said vertical flat member (45,46), and described H is meant the degree of depth of bath of molten metal in the container (11).
9. equipment as claimed in claim 8, the parallel to each other and level of wherein said vertical flat member (45,46), and its lateral dimension is suitable for being defined for the minimal openings of passing through by the planar metal goods between every pair of parts.
10. equipment as claimed in claim 1, the wherein said faradic correction device of rectification that is used for comprises an electrical isolation magnet assembly, this magnet assembly is located in the container (11) and inverted configuration, so that define a magnetic circuit, described magnetic circuit is suitable in metal bath magnetic flux is connected to described magnetic circuit inside, and induced current is connected to described magnetic circuit outside.
11. equipment as claimed in claim 10, wherein said magnetic circuit are tetragon, and its bottom is located at container (11) bottom top 0-50mm, preferred 10-15mm.
12. as claim 10 or 11 described equipment, wherein be provided with two pairs of magnet assemblies (54,55), the every pair of parts all are integrated into described half container (22) and have and the parallel plane surface of the charging of planar metal goods, described surface contacts or does not contact with another reflecting surface to assembly (54,55) that is located on second half container (22).
13. equipment as claimed in claim 12, wherein said magnetic circuit is by two pairs of magnet assemblies (54,55) and two pairs of vertical flat member (45,46) define, every pair of described parts are outstanding from the longitudinal side wall (23) of described container (11), and are set up the top and bottom of leaning on the wide top (21) of described container (11) respectively.
14. equipment as claimed in claim 13, the longitudinal extension (L) of each is than the width of planar metal goods (13) 0.1H greatly at least in wherein said vertical flat member (45,46), and described H is meant the degree of depth of bath of molten metal in the container (11).
15. equipment as claimed in claim 14, the parallel to each other and level of wherein said vertical flat member (45,46), and its lateral dimension is suitable for being defined for the minimal openings of passing through by the planar metal goods between every pair of parts.
16. equipment as claimed in claim 1, the wherein said faradic correction device of rectification that is used for comprises:
-one current diverter, it is provided with the electric current water diversion part (43 that is not connected with metal bath (17), 44), described electric current water diversion part (43,44) be connected to be located at described longitudinal opening (16) two end wall (29) the electric current water conservancy diversion terminals (47) that go up and contact separately with described bath of molten metal to small part
-one electrical isolation magnet assembly, this magnet assembly are located in the container (11) and inverted configuration, so that define a magnetic circuit, described magnetic circuit is suitable in metal bath magnetic flux is connected to described magnetic circuit inside, and induced current is connected to described magnetic circuit outside.
17. be in bath of molten metal (17), to use continuous hot dipping method to give the method for planar metal article coatings, may further comprise the steps with arbitrary described equipment in the aforementioned claim:
-the planar metal goods are imported in the described bath of molten metal (17) along the charging plane by the longitudinal opening (16) of being located at vertical container (11) bottom that holds described metal bath;
-produce the magnetic flux that becomes to pass through described metal bath (17), described magnetic flux is concentrated in the narrow bottom (20) of described container, thereby induce generation vertically to pass through the induced current of described container (11) bottom, and in the strongest electromagnetic force of metal bath (17) bottom formation, so that described metal bath suspends with respect to container bottom and forms its meniscus down
Wherein carry out described induced current rectification, so that described induced current is balanced in the described whole extension area of meniscus down at described meniscus end down.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITMI2008A001207 | 2008-06-30 | ||
| IT001207A ITMI20081207A1 (en) | 2008-06-30 | 2008-06-30 | ELECTROMAGNETIC DEVICE FOR COATING WITH CONTINUOUS HOT DIVING OF METALLIC PRODUCTS, PLANS AND RELATED COATING PROCESS |
| PCT/IB2009/052817 WO2010001330A2 (en) | 2008-06-30 | 2009-06-30 | Electromagnetic device for coating flat metal products by means of continuous hot dipping, and coating process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102105616A true CN102105616A (en) | 2011-06-22 |
| CN102105616B CN102105616B (en) | 2013-09-04 |
Family
ID=40301907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009801255043A Expired - Fee Related CN102105616B (en) | 2008-06-30 | 2009-06-30 | Electromagnetic device for coating flat metal products by means of continuous hot dipping, and coating process thereof |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2304067B1 (en) |
| KR (1) | KR101608035B1 (en) |
| CN (1) | CN102105616B (en) |
| IT (1) | ITMI20081207A1 (en) |
| WO (1) | WO2010001330A2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109072395A (en) * | 2016-01-29 | 2018-12-21 | 冶金研究Asbl中心 | It is continuously traveling the fluid dynamic stabilising arrangement of metal tape |
| CN109642825A (en) * | 2016-09-01 | 2019-04-16 | 贺利氏电测骑士国际有限公司 | Optics core-spun yarn immersion ozzle |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5980898B2 (en) * | 2011-03-30 | 2016-08-31 | タタ、スティール、ネダーランド、テクノロジー、ベスローテン、フェンノートシャップＴａｔａ Ｓｔｅｅｌ Ｎｅｄｅｒｌａｎｄ Ｔｅｃｈｎｏｌｏｇｙ Ｂｖ | Device for coating moving strip material with metallic paint |
| ITMI20111544A1 (en) * | 2011-08-24 | 2013-02-25 | Danieli Off Mecc | PLANT FOR THE COATING WITH IMMERSION CONTINUOUSLY HOT OF METALLIC PRODUCTS, PLANS AND RELATED COATING PROCESS |
| CN108203798A (en) * | 2018-01-22 | 2018-06-26 | 兰州交大常州研究院有限公司 | The continuous method and apparatus for preparing metal compound wire |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4242380A1 (en) * | 1992-12-08 | 1994-06-09 | Mannesmann Ag | Method and device for coating the surface of strand-like material |
| DE4344939C1 (en) * | 1993-12-23 | 1995-02-09 | Mannesmann Ag | Method for the control, suitable for the process, of an installation for coating strip-shaped material |
| ZA987172B (en) * | 1998-03-23 | 1999-04-28 | Inland Steel Co | Magnetic containment of hot dip coating bath |
| FR2798937A3 (en) * | 1999-09-24 | 2001-03-30 | Lorraine Laminage | Installation for the coating of metal strip, defiling rectilinearly, by immersion in a bath of liquid coating material, notably for the galvanization of steel strip |
-
2008
- 2008-06-30 IT IT001207A patent/ITMI20081207A1/en unknown
-
2009
- 2009-06-30 CN CN2009801255043A patent/CN102105616B/en not_active Expired - Fee Related
- 2009-06-30 EP EP09772990.9A patent/EP2304067B1/en not_active Not-in-force
- 2009-06-30 KR KR1020117002384A patent/KR101608035B1/en not_active IP Right Cessation
- 2009-06-30 WO PCT/IB2009/052817 patent/WO2010001330A2/en active Application Filing
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109072395A (en) * | 2016-01-29 | 2018-12-21 | 冶金研究Asbl中心 | It is continuously traveling the fluid dynamic stabilising arrangement of metal tape |
| CN109072395B (en) * | 2016-01-29 | 2021-02-26 | 冶金研究Asbl中心 | Hydrodynamic stabilizing device for continuously advancing metal strip |
| CN109642825A (en) * | 2016-09-01 | 2019-04-16 | 贺利氏电测骑士国际有限公司 | Optics core-spun yarn immersion ozzle |
| CN109642825B (en) * | 2016-09-01 | 2021-02-19 | 贺利氏电测骑士国际有限公司 | Immersion nozzle for optical cored wire |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2010001330A3 (en) | 2010-06-03 |
| ITMI20081207A1 (en) | 2010-01-01 |
| CN102105616B (en) | 2013-09-04 |
| WO2010001330A2 (en) | 2010-01-07 |
| KR20110025231A (en) | 2011-03-09 |
| KR101608035B1 (en) | 2016-03-31 |
| EP2304067B1 (en) | 2019-03-13 |
| EP2304067A2 (en) | 2011-04-06 |
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