CN111893414A - Furnace nose annular overflow device of hot coating production line - Google Patents
Furnace nose annular overflow device of hot coating production line Download PDFInfo
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- CN111893414A CN111893414A CN202010442875.2A CN202010442875A CN111893414A CN 111893414 A CN111893414 A CN 111893414A CN 202010442875 A CN202010442875 A CN 202010442875A CN 111893414 A CN111893414 A CN 111893414A
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- 239000011248 coating agent Substances 0.000 title claims abstract description 20
- 238000000576 coating method Methods 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 112
- 239000011701 zinc Substances 0.000 claims abstract description 111
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 111
- 238000005086 pumping Methods 0.000 claims abstract description 25
- 239000002893 slag Substances 0.000 claims abstract description 24
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 238000007747 plating Methods 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 40
- 230000005484 gravity Effects 0.000 claims description 6
- 239000003638 chemical reducing agent Substances 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 3
- 238000003618 dip coating Methods 0.000 claims 7
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 26
- 239000010959 steel Substances 0.000 description 26
- 230000007547 defect Effects 0.000 description 5
- 238000007599 discharging Methods 0.000 description 5
- 238000005246 galvanizing Methods 0.000 description 4
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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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
-
- 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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- 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)
Abstract
The invention discloses a furnace nose annular overflow device of a hot coating plating production line, which comprises two parallel overflow grooves, a bottom plate arranged at the bottom of the overflow groove, an end plate used for connecting the end parts of the two overflow grooves, and a parallel flow inclined diversion groove and a zinc pumping pump connecting pipe which are arranged at two outlet ends of the overflow groove; the two overflow chutes are obliquely arranged and are matched with the size of the section of the furnace nose so as to be arranged on the inner wall of the furnace nose; the overflow trough is integrally in a herringbone structure, and the bottom of the overflow trough is hermetically connected with the bottom plate to form a sealing cavity for supporting the device to suspend; the overflow groove is divided into two sections of overflow subsections which are symmetrically connected and the outer ends of which are inclined downwards, the joint of the two sections of overflow subsections is an overflow groove high position, and the outer ends of the overflow subsections are outlets of the overflow groove. The invention has the beneficial effects that: the annular overflow device symmetrically shunts and realizes double-sided slag and ash removal, improves the quality of the upper surface and the lower surface of the hot-dip galvanized plate, and reduces the product judgment rate.
Description
Technical Field
The invention relates to the field of metallurgical steel rolling machinery, in particular to a furnace nose annular overflow device of a hot coating production line.
Background
The hot galvanized sheet is widely applied in many fields due to the excellent coating property and the excellent corrosion resistance, the automobile and the household electrical industry are rapidly developed, and good opportunities are provided for the production of the hot galvanized sheet; meanwhile, the intense competition of the high-end market also presents more stringent challenges for manufacturers. With the increasingly wide application of high-grade hot-galvanized plates in the automobile and household appliance industries, users have increasingly high requirements on the surface quality of the hot-galvanized plates.
When the hot-dip galvanized sheet is applied to the fields of automobiles, household electrical appliances and the like, generally, the hot-dip galvanized sheet needs to be subjected to stamping deformation treatment, defects on a galvanized substrate can be amplified in the stamping process and are copied to the other surface of the sheet to form surface quality objections, so that customer complaints are caused, and galvanized products are degraded. Therefore, when the hot-dip galvanized sheet is used as a high-grade automobile outer plate, the surface quality of the hot-dip galvanized sheet is required to reach the O5 grade of the German DIN standard, namely the surface of the product has no defects which influence the use.
In the production of a hot galvanizing line, zinc ash in a zinc boiler nose is a main factor causing degradation of an automobile outer plate, and zinc liquid in the furnace nose is evaporated at high temperature and can be gathered on the inner wall of the furnace nose to form the zinc ash when zinc steam diffuses and moves around. The slag discharging furnace nose which is widely used at present mostly adopts a combined structure of a slag discharging groove and an overflow groove, the inventor hopes that zinc ash is deposited in the slag discharging groove after being gathered, and the zinc ash floating on the surface of zinc liquid is discharged outside the furnace nose by a zinc pumping pump in an overflow mode. The slag and ash discharging mode has certain improvement effect on the surface quality of the hot-dip galvanized sheet, but a large amount of zinc ash still condenses in the space between the slag discharging groove and the steel sheet, and the problem of the zinc ash cannot be fundamentally solved.
Disclosure of Invention
The invention aims to provide a furnace nose annular overflow device of a hot coating production line, which can remove slag and ash on two sides and aims to overcome the defects of the prior art.
The technical scheme adopted by the invention is as follows: a furnace nose annular overflow device of a hot coating plating production line comprises two parallel overflow grooves, a bottom plate arranged at the bottom of the overflow groove, an end plate used for connecting the end parts of the two overflow grooves, a parallel flow inclined diversion groove arranged at two outlet ends of the overflow groove and a zinc pumping pump connecting pipe; the two overflow chutes are obliquely arranged and are matched with the size of the section of the furnace nose so as to be arranged on the inner wall of the furnace nose; the overflow trough is integrally in a herringbone structure, and the bottom of the overflow trough is hermetically connected with the bottom plate to form a sealing cavity for supporting the device to suspend; the overflow groove is divided into two sections of overflow subsections which are symmetrically connected and the outer ends of which are inclined downwards, the joint of the two sections of overflow subsections is an overflow groove high position, and the outer ends of the overflow subsections are outlets of the overflow groove; the two overflow chutes are converged at the outlet of the same end and communicated with the inlet of the same zinc pumping pump connecting pipe through downward-inclined parallel flow guide chutes.
According to the scheme, the overflow groove is formed by enclosing a surrounding plate at the outer side and a groove plate at the bottom, the upper edge of the surrounding plate exceeds the side part of the groove plate, and the lower edge of the surrounding plate extends downwards to the bottom plate and is connected with the bottom plate; the trough plate is manufactured, and the bottom of the trough plate is in arc transition; the two ends of the groove plate are fixedly welded with the bottom plate, and the coaming, the groove plate and the bottom plate are enclosed to form a sealed cavity.
According to the scheme, when the annular overflow device is immersed in zinc liquid, the sealing cavity is acted by upward floating force, so that the influence of the gravity of the annular overflow device on the furnace nose body is reduced.
According to the scheme, the upper part of the diversion trench is communicated with the outlets of the two overflow trenches, and the lower part of the diversion trench is communicated with the zinc pump according to a pipe, so that a funnel with an upper part and a lower part being round is formed.
According to the scheme, the supporting plates connected with the bottom plate are arranged at the bottom of the groove plate at intervals, and the upper ends of the supporting plate plates are matched with the outer wall surface of the groove plate.
According to the scheme, a slag baffle is welded on the inner side of the overflow groove in a through-length mode, and the upper end and the lower end of the slag baffle are outwards turned into an arc shape towards the direction far away from the strip steel coating area; and the inner side surfaces of the slag baffle and the groove plate form an overflow lip.
According to the scheme, two groups of the zinc pumping pump connecting pipes are arranged at two ends of the overflow groove and are arranged along the opposite angle of the annular overflow device; the guide grooves of the two overflow grooves positioned at the same end are communicated with the inlet of the same zinc pumping pump connecting pipe through a reducer pipe.
According to the scheme, the inlet of the connecting pipe of the zinc pump is arranged at the lowest position of the overflow groove; the overflow cross-sectional area of the flow guide groove is not less than 1.5 times of the sum of the cross-sectional areas of the overflow grooves at the two ends.
The invention has the beneficial effects that:
1. the annular overflow device is surrounded on the periphery of the coated strip steel, and zinc ash between two surfaces of the strip steel and gaps of the overflow groove can be pumped and discharged along with zinc liquid; the overflow grooves on the two sides of the upper surface and the lower surface of the strip steel are integrally in a herringbone symmetrical structure, the zinc liquid in the furnace nose is symmetrically shunted to the overflow grooves after the zinc pumping pump is started, zinc ash on the surface of the zinc liquid in the furnace nose is brought into the overflow grooves through the flow of the zinc liquid and is discharged into a zinc pot outside the furnace nose by the zinc pumping pump, and the zinc ash discharged into the zinc pot is changed into scum and is fished out of the zinc pot; the overflow device realizes double-sided slag and ash removal, improves the quality of the upper surface and the lower surface of the hot-dip galvanized sheet, reduces the product judging rate, effectively solves the problem of double-sided zinc ash defects in hot-dip galvanizing production, and has important significance for improving the yield of galvanizing units, reducing the zinc ash defect judging rate and promoting the market share of high-grade galvanized automobile sheets.
2. The overflow groove is supported by adopting a herringbone structure and forms an equilateral triangular pyramid stable structure with the bottom sealing plate, the deformation resistance is strong, and the zinc liquid fluidity is good; meanwhile, the sealing cavity is subjected to the action of buoyancy in the zinc liquid to support the whole device to float upwards so as to reduce the influence of the gravity of the overflow device on the bearing of the furnace nose body.
3. In the invention, the zinc pumping pump connecting pipes are arranged at two ends of the overflow groove and are arranged diagonally so as to keep the center of gravity balance when the zinc pumping pump connecting pipes are arranged on the furnace nose; adopting a parallel-flow inclined overflow structure: outlets of the two overflow chutes at the same end are communicated with an inlet of the same zinc pumping pump connecting pipe through an inclined flow guide chute; the overflow section of the diversion trench is not less than 1.5 times of the sum of the sections of the overflow trenches at two ends, so that the problems of unsmooth zinc liquid drainage and channel blockage caused by zinc ash accumulation can be effectively prevented.
4. In order to enhance the strength of the overflow groove, the overflow side is welded with a slag baffle, and the upper end and the lower end of the slag baffle are outwards turned in an arc shape to prevent the strip steel from being scratched when the strip steel is threaded.
Drawings
FIG. 1 is a front view of one embodiment of the present invention.
Fig. 2 is a sectional view a-a of fig. 1.
Fig. 3 is a sectional view B-B of fig. 1.
Fig. 4 is a schematic view of fig. 2 taken along direction K.
Wherein: 1. a left coaming; 2. a right coaming; 3. a left channel plate; 4. a right slot plate; 5. a left slag trap; 6. a right slag trap; 7. a first zinc pumping pump connecting pipe; 8. a second zinc pumping pump connecting pipe; 9. an end plate; 10. a first left support plate; 11. a second left support plate; 12. a first right support plate; 13. a second right support plate; 14. the left trough plate is high; 15. the right trough plate is high; 16. strip steel; 17. a zinc liquid overflow surface; 18. a left overflow lip; 19. a right overflow lip; 20. a reducer pipe; 21. sealing the cavity; 22. a base plate.
Detailed Description
For a better understanding of the present invention, reference is made to the following detailed description taken in conjunction with the accompanying drawings.
The annular overflow device for the furnace nose of the hot coating plating production line shown in figures 1-4 is characterized in that the size of the outer peripheral surface of the annular overflow device (the section shown in figure 2) is matched with the inner wall surface of the furnace nose so as to be arranged at the lower end of the furnace nose. In the invention, the annular overflow device comprises two parallel overflow grooves, an end plate 9 arranged at the end part of the overflow groove and used for connecting the two overflow grooves, a bottom plate 22 arranged at the bottom of the overflow groove, and a parallel-flow inclined diversion groove and a zinc pumping pump connecting pipe which are arranged at two outlet ends of the overflow groove; the two overflow chutes are obliquely arranged to be matched with the size of the cross section of the furnace nose (as shown in fig. 2) so as to be arranged on the inner wall of the furnace nose; the upper and lower communicated areas formed by the two overflow grooves and the two end plates 9 are strip steel coating areas; the overflow trough is of a herringbone structure as a whole, and the bottom of the overflow trough is hermetically connected with a bottom plate 22 to form a sealing cavity 21 for supporting the device to suspend; the overflow groove is divided into two sections of overflow subsections which are symmetrically connected and the outer ends of which are inclined downwards, the joint of the two sections of overflow subsections is an overflow groove high position, and the outer ends of the overflow subsections are outlets of the overflow groove; the two overflow chutes are converged at the outlet of the same end and communicated with the inlet of the same zinc pumping pump connecting pipe through downward-inclined parallel flow guide chutes.
In this embodiment, the annular overflow device includes a left overflow chute and a right overflow chute which are parallel and obliquely arranged, and the oblique angle of the two overflow chutes is matched with the inner wall of the furnace nose; the inlet of the connecting pipe of the zinc pump is arranged at the lowest position of the overflow tanks, the upper parts of the diversion trenches are communicated with the outlets of the two overflow tanks, and the lower parts of the diversion trenches are communicated with the zinc pump according to pipes to form a funnel with an upper part and a lower part being round. The overflow cross-sectional area of the diversion trench is not less than 1.5 times of the sum of the cross-sectional areas of the overflow trenches at two ends, so that the situation that the zinc liquid is not smoothly drained and zinc ash is accumulated to block a channel is prevented.
Preferably, the overflow chute is formed by enclosing an outer enclosing plate and a bottom chute plate, the upper edge of the enclosing plate exceeds the side part of the chute plate, and the lower edge of the enclosing plate extends downwards to the bottom plate 22 and is connected with the bottom plate 22; the trough plate is manufactured, and the bottom of the trough plate is in arc transition; the two ends of the trough plate are welded and fixed with the bottom plate 22, and the coaming, the trough plate and the bottom plate 22 are enclosed to form a sealed cavity 21 (the annular overflow device is provided with two overflow troughs which respectively correspond to the two sealed cavities 21 which are not communicated with each other).
According to the invention, the sealing cavity 21 is designed, and when the annular overflow device is immersed in zinc liquid, the sealing cavity 21 is acted by upward floating force to support the device to float upwards, so that the influence of the gravity of the overflow device on the bearing of the furnace nose body is reduced. The volume of the sealed cavity 21 is determined by the formula G ≦ γ V. Wherein G is the overflow launder mass, gamma is the zinc bath density, and V is the volume of the seal cavity 21, and the volume of the strip steel 16 immersed in the zinc bath of the device can be ignored.
In this embodiment, the high positions of the left and right overflow grooves correspond to the high position 14 of the left slot plate and the high position 15 of the right slot plate in fig. 2, respectively; the left coaming 1 in the left overflow groove is unfolded with the left groove plate 3 to be integrated when lofting is carried out; the right coaming 2 in the right overflow groove is integrated with the right groove plate 4 after being unfolded during lofting manufacture. In order to ensure that the zinc liquid flows more smoothly, the groove plates are concave arc plates.
Preferably, to enhance the rigidity of the overflow trough and prevent deformation of the overflow trough, support plates are spaced apart from the bottom of the trough plate and are connected to the bottom plate 22, and the upper ends of the support plates are adapted to the outer wall surface of the trough plate. In this embodiment, the bottom of the left channel plate 3 is provided with a left main supporting plate and left auxiliary supporting plates (including a left supporting plate one 10 and a left supporting plate two 11 as shown in fig. 2) at two sides, wherein the left main supporting plate is located at the bottom center of the left channel plate 3; the bottom of the right slot plate 4 is provided with a right main supporting plate and right auxiliary supporting plates (including a first right supporting plate 12 and a second right supporting plate 13 as shown in fig. 1) at two sides, wherein the right main supporting plate is positioned at the bottom center of the right slot plate 4.
In order to enhance the strength of the overflow groove, a slag baffle is welded on the inner side of the overflow groove in a long way, and the upper end and the lower end of the slag baffle are outwards turned into an arc shape towards the direction far away from the coating area of the strip steel 16, so that the strip steel 16 is prevented from being scratched when penetrating. In the invention, the upper end of the slag trap and the groove plate of the overflow groove are welded into a whole, and the whole is processed to form the zinc liquid overflow surface 17. The left overflow groove and the right overflow groove are respectively and correspondingly provided with a left slag baffle 5 and a right slag baffle 6.
Preferably, the zinc pumping pump connecting pipes are divided into two groups (including a first zinc pumping pump connecting pipe 7 and a second zinc pumping pump connecting pipe 8), are arranged at two ends of the overflow groove and are arranged along the opposite angles of the annular overflow device, so that the gravity center balance is kept when the zinc pumping pump connecting pipes are arranged on the furnace nose; the flow guide grooves of the two overflow grooves at the same end are communicated with the inlet of the same zinc pumping pump connecting pipe through a reducer pipe 20.
In the invention, the upper end of the slag trap and the inner side of the overflow groove (namely the side close to the strip steel coating steel plate) form an overflow lip, four overflow lips (one overflow lip at each inlet of each overflow section) form a zinc liquid overflow surface 17, and the flatness of the zinc liquid overflow surface 17 is less than 0.5 thousandth of the maximum side length of the overflow groove. In this embodiment, the left overflow trough corresponds to two left overflow lips 18, and the right overflow trough corresponds to two right overflow lips 19; after the annular overflow device and the zinc pump are mounted and balanced with the furnace nose body, the four overflow lips are parallel to the zinc liquid overflow surface 17. Setting the height difference between the liquid level of the zinc pot and the liquid level of zinc in the furnace nose to be 1mm, and balancing by adding zinc and pumping zinc; when the limit is exceeded, the zinc pump starts to work, and when the limit is fallen below, the zinc adding device works.
In the invention, the annular overflow device is matched equipment of a furnace nose in a hot galvanizing line zinc pot, and is similar to the nose tip of the traditional furnace nose; the annular overflow device is an independent structure connected with the furnace nose body, is positioned and sealed according to the furnace nose body, and is suspended in zinc liquid in a zinc pot to form a coating band steel 16 suitable for a working environment; can be disassembled and assembled according to the requirement. The annular overflow device divides the zinc liquid level into two areas through an overflow groove: 1. the overflow groove is internally provided with an overflow area which is formed by enclosing a surrounding plate and a groove plate, and the upper end of the surrounding plate exceeds the inner side height of the groove plate; 2. the central area surrounded by the two overflow chutes is a strip steel 16 coating area, and the liquid level of the strip steel 16 coating area is consistent with the main liquid level of the zinc pot. When the zinc ash is discharged in an overflowing way, the zinc adding amount is increased, the liquid level of the zinc pot rises, when the liquid level rises to a zinc liquid overflowing surface 17 formed by four overflowing lips of the annular overflowing device, zinc liquid in a coating area of the strip steel 16 together with zinc ash overflows to an overflowing groove, and zinc pumps on two sides discharge the zinc ash in the overflowing groove out of a furnace nose through connecting pipes.
In the invention, the annular overflow device surrounds the periphery of the strip steel 16 (a proper gap is reserved between the strip steel 16 and the overflow groove to prevent the strip steel 16 from being penetrated and scratched), and the overflow grooves on the two sides of the upper surface and the lower surface of the strip steel 16 are integrally in a herringbone symmetrical structure (generally, the surface of the strip steel 16, which is in contact with the sink roll, is an upper surface, and the non-contact surface is a lower surface). When the coating of the zinc pot is started, the overflow device is immersed in the zinc liquid to form a hot-dip closed space together with the liquid level of the coating, the inner cavity of the furnace nose and the sealing system. The strip steel 16 penetrates through the middle of the two overflow grooves, the liquid level of the zinc pot and the zinc liquid overflow surface 17 of the overflow groove lip inside the furnace nose keep a certain height difference, and the balance is achieved by adding zinc ingots and extracting zinc liquid. When the zinc ash in the furnace nose is increased, the zinc ingot is added, the liquid level of the zinc pot is lifted, the zinc liquid is symmetrically distributed along the inverted V-shaped overflow groove when the zinc ash exceeds the overflow lip surface of the overflow groove, the zinc pump starts to work, the zinc ash is discharged out of the furnace nose along with the zinc liquid, the zinc ash on the surface of the zinc liquid in the furnace nose is brought into the overflow groove through the flow of the zinc liquid and is discharged into the zinc pot outside the furnace nose by the zinc pump, and the zinc ash discharged into the zinc pot is changed into scum and is fished out of the zinc pot. The strip steel 16 enters the zinc liquid through the hot-dip closed space to smoothly complete the hot-dip task.
It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and the present invention is not limited thereto, and although the present invention has been described in detail with reference to the embodiments, it will be apparent to those skilled in the art that modifications can be made to the technical solutions described in the above-mentioned embodiments, or equivalent substitutions of some technical features, but any modifications, equivalents, improvements and the like within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims (8)
1. The furnace nose annular overflow device of the hot coating plating production line is characterized by comprising two parallel overflow grooves, a bottom plate arranged at the bottom of the overflow groove, an end plate used for connecting the end parts of the two overflow grooves, and a parallel-flow inclined diversion groove and a zinc pumping pump connecting pipe which are arranged at two outlet ends of the overflow groove; the two overflow chutes are obliquely arranged and are matched with the size of the section of the furnace nose so as to be arranged on the inner wall of the furnace nose; the overflow trough is integrally in a herringbone structure, and the bottom of the overflow trough is hermetically connected with the bottom plate to form a sealing cavity for supporting the device to suspend; the overflow groove is divided into two sections of overflow subsections which are symmetrically connected and the outer ends of which are inclined downwards, the joint of the two sections of overflow subsections is an overflow groove high position, and the outer ends of the overflow subsections are outlets of the overflow groove; the two overflow chutes are converged at the outlet of the same end and communicated with the inlet of the same zinc pumping pump connecting pipe through downward-inclined parallel flow guide chutes.
2. The furnace nose annular overflow device of the hot-dip coating production line according to claim 1, wherein the overflow groove is formed by enclosing an outer enclosing plate and a bottom groove plate, the upper edge of the enclosing plate exceeds the side part of the groove plate, and the lower edge of the enclosing plate extends downwards to the bottom plate and is connected with the bottom plate; the trough plate is manufactured, and the bottom of the trough plate is in arc transition; the two ends of the groove plate are fixedly welded with the bottom plate, and the coaming, the groove plate and the bottom plate are enclosed to form a sealed cavity.
3. The furnace nose annular overflow device of the hot-dip coating production line of claim 2, wherein when the annular overflow device is immersed in the zinc liquid, the sealing cavity is subjected to upward floating force to reduce the influence of the gravity of the annular overflow device on the furnace nose body.
4. The furnace nose annular overflow device of the hot-dip coating production line according to claim 1, wherein the upper part of the diversion trench is communicated with the outlets of the two overflow trenches, and the lower part of the diversion trench is communicated with the zinc pump by a pipe to form a funnel with an upper part and a lower part being round.
5. The furnace nose annular overflow device of the hot dip coating production line according to claim 2, wherein a support plate for connecting with the bottom plate is provided at a space at the bottom of the groove plate, and the upper end of the support plate is fitted with the outer wall surface of the groove plate.
6. The furnace nose ring-shaped overflow device of the hot-dip coating production line as claimed in claim 2, wherein a slag trap is welded throughout the inner side of the overflow groove, the upper and lower ends of the slag trap are turned outwards in an arc shape in a direction away from the strip coating area, and the slag trap and the inner side of the groove plate form an overflow lip.
7. The furnace nose annular overflow device of the hot-dip coating production line according to claim 2, wherein the zinc pumping connecting pipes are arranged in two groups, are arranged at two ends of the overflow groove and are arranged along the opposite corners of the annular overflow device; the guide grooves of the two overflow grooves positioned at the same end are communicated with the inlet of the same zinc pumping pump connecting pipe through a reducer pipe.
8. The furnace nose annular overflow device of the hot-dip coating production line according to claim 2, wherein the inlet of the zinc pump connecting pipe is at the lowest position of the overflow groove; the overflow cross-sectional area of the flow guide groove is not less than 1.5 times of the sum of the cross-sectional areas of the overflow grooves at the two ends.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2020206997880 | 2020-04-30 | ||
| CN2020103613510 | 2020-04-30 | ||
| CN202010361351 | 2020-04-30 | ||
| CN202020699788 | 2020-04-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111893414A true CN111893414A (en) | 2020-11-06 |
| CN111893414B CN111893414B (en) | 2024-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020878176.8U Withdrawn - After Issue CN212404238U (en) | 2020-04-30 | 2020-05-22 | Furnace nose annular overflow device of hot coating production line |
| CN202010442875.2A Active CN111893414B (en) | 2020-04-30 | 2020-05-22 | Annular overflow device for furnace nose of hot-dip coating production line |
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| CN202020878176.8U Withdrawn - After Issue CN212404238U (en) | 2020-04-30 | 2020-05-22 | Furnace nose annular overflow device of hot coating production line |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113073278A (en) * | 2021-03-22 | 2021-07-06 | 武汉钢铁有限公司 | Zinc boiler nose lip overflow slag-adhering test device and test method thereof |
| CN113637934A (en) * | 2021-07-22 | 2021-11-12 | 武汉钢铁有限公司 | Auxiliary device and method for manufacturing annular overflow furnace nose |
| CN114107863A (en) * | 2021-11-19 | 2022-03-01 | 武汉钢铁有限公司 | Furnace nose device capable of reducing slag adhering of molten zinc |
| CN115584457A (en) * | 2022-09-30 | 2023-01-10 | 武汉钢铁有限公司 | Annular overflow device and method for closed-loop control of zinc addition through internal liquid level measurement |
| CN115595524A (en) * | 2021-07-09 | 2023-01-13 | 宝山钢铁股份有限公司（Cn） | Multifunctional furnace nose for strip steel galvanizing and zinc ash control method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212404238U (en) * | 2020-04-30 | 2021-01-26 | 武汉钢铁有限公司 | Furnace nose annular overflow device of hot coating production line |
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| JPH0459955A (en) * | 1990-06-28 | 1992-02-26 | Kawasaki Steel Corp | Continuous hot dip galvanizing device |
| JPH0665703A (en) * | 1992-08-21 | 1994-03-08 | Sumiden Fine Kondakuta Kk | Hot-dip metal coating method and device therefor |
| US20020076502A1 (en) * | 1998-04-01 | 2002-06-20 | Nkk Corporation | Apparatus for hot dip galvanizing |
| US20040052959A1 (en) * | 2000-11-10 | 2004-03-18 | Didier Dauchelle | Method and installation for hot process and continuous dip coating of a metal strip |
| JP2002275606A (en) * | 2001-03-16 | 2002-09-25 | Nisshin Steel Co Ltd | Method for device for preventing sticking of dross on surface of steel strip at the inside of snout in continuous hot dip metal plating |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113073278A (en) * | 2021-03-22 | 2021-07-06 | 武汉钢铁有限公司 | Zinc boiler nose lip overflow slag-adhering test device and test method thereof |
| CN113073278B (en) * | 2021-03-22 | 2022-12-27 | 武汉钢铁有限公司 | Zinc boiler nose lip overflow slag-adhering test device and test method thereof |
| CN115595524A (en) * | 2021-07-09 | 2023-01-13 | 宝山钢铁股份有限公司（Cn） | Multifunctional furnace nose for strip steel galvanizing and zinc ash control method thereof |
| CN113637934A (en) * | 2021-07-22 | 2021-11-12 | 武汉钢铁有限公司 | Auxiliary device and method for manufacturing annular overflow furnace nose |
| CN113637934B (en) * | 2021-07-22 | 2023-06-27 | 武汉钢铁有限公司 | Auxiliary device and method for manufacturing annular overflow furnace nose |
| CN114107863A (en) * | 2021-11-19 | 2022-03-01 | 武汉钢铁有限公司 | Furnace nose device capable of reducing slag adhering of molten zinc |
| CN114107863B (en) * | 2021-11-19 | 2023-08-18 | 武汉钢铁有限公司 | Furnace nose device capable of reducing zinc liquid slag hanging |
| CN115584457A (en) * | 2022-09-30 | 2023-01-10 | 武汉钢铁有限公司 | Annular overflow device and method for closed-loop control of zinc addition through internal liquid level measurement |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111893414B (en) | 2024-05-24 |
| CN212404238U (en) | 2021-01-26 |
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