CN109385592B - Furnace nose zinc ash control system - Google Patents
Furnace nose zinc ash control system Download PDFInfo
- Publication number
- CN109385592B CN109385592B CN201811171118.5A CN201811171118A CN109385592B CN 109385592 B CN109385592 B CN 109385592B CN 201811171118 A CN201811171118 A CN 201811171118A CN 109385592 B CN109385592 B CN 109385592B
- Authority
- CN
- China
- Prior art keywords
- control unit
- humidifying
- valve
- furnace nose
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
- C21D1/76—Adjusting the composition of the atmosphere
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D11/00—Process control or regulation for heat treatments
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
- C21D9/561—Continuous furnaces for strip or wire with a controlled atmosphere or vacuum
-
- 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
- C23C2/34—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)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Coating With Molten Metal (AREA)
Abstract
The invention discloses a furnace nose zinc ash control system, which belongs to the technical field of annealing and coating of cold-rolled strips, and comprises a water supplementing and heating control unit, wherein the water supplementing and heating control unit is arranged on one side outside a furnace nose and used for conveying mixed gas into the furnace nose; the dew point detection unit is connected with the furnace nose; the humidifying gas control unit is connected with the furnace nose through a first pipeline; the humidifying spraying beams are arranged on two sides of the furnace nose; and the control unit is provided with an operation interface, and the water supplementing and heating control unit, the dew point detection unit, the humidifying gas control unit and the humidifying spray beam are controlled through the operation interface. The technical effects of high system stability and detection precision, improved zinc ash inhibition capability, reduced loss of high-quality hot-dip galvanized products and greatly improved zinc ash control stability and efficiency are achieved.
Description
Technical Field
The invention relates to the technical field of annealing coating of cold-rolled strips, in particular to a furnace nose zinc ash control system.
Background
With the continuous expansion of the automobile market, the requirements on the automobile quality are more and more strict, so that the requirements of automobile manufacturers on the surface of the cold-rolled strip steel are also improved, and the surface quality and the cleanliness of the strip steel become important evaluation indexes. The zinc ash defect control of the surface defects of the hot-dip galvanized sheet strip steel becomes a bottleneck restricting the production of high-end automobile sheet products of iron and steel enterprises all over the world, and restricts the research and development of the high-end products of the iron and steel enterprises to a great extent. By analyzing the occurrence rule and the distribution state of the expression form of the zinc ash defects, the zinc ash production amount can be reduced by inhibiting the volatilization of zinc steam, the probability of the zinc ash adhering to the furnace nose wall is reduced, the frequency of dropping the zinc ash onto the surface of the strip steel from the furnace nose wall is reduced, the root cause of the zinc ash defects is timely and accurately reduced, and the stability of the surface quality of the strip steel is maintained.
However, in the process of implementing the technical solution of the invention in the embodiments of the present application, the inventors of the present application find that the above-mentioned technology has at least the following technical problems:
in the traditional furnace humidifying method, humidifying nitrogen is introduced into a furnace nose, and corresponding rules and standards are established on the basis of the humidifying nitrogen. The atmosphere of the furnace nose reducing gas can be reduced due to the addition of nitrogen, the dew point detection configuration is unreasonable, the liquid level of the humidification tank is not well controlled, the design of the spraying beam is unreasonable, the humidification tank and the furnace control system are integrated separately, the combination degree with an operator is not high, the zinc ash control efficiency is not high, and even water enters the furnace nose to cause plating leakage.
Disclosure of Invention
The invention provides a furnace nose zinc ash control system, which is used for solving the technical problems that the humidifying nitrogen introduced in the prior art can reduce the reducing gas atmosphere of the furnace nose, the dew point detection configuration is unreasonable, the design of a spraying beam is unreasonable, the combination degree with operators is not high, the zinc ash control efficiency is not high, and even water enters the furnace nose to cause plating leakage, so that the technical effects of high system stability and detection precision, zinc ash inhibition capacity improvement, high-quality hot galvanizing product loss reduction and zinc ash control stability and efficiency substantial improvement are achieved.
The invention provides a furnace nose zinc ash control system, which comprises: the water replenishing and heating control unit is arranged on one side outside the furnace nose and used for conveying mixed gas into the furnace nose; the dew point detection unit is connected with the furnace nose; the humidifying gas control unit is connected with the furnace nose through a first pipeline; the humidifying spraying beams are arranged on two sides of the furnace nose, and spray holes of the humidifying spraying beams are arranged opposite to the zinc liquid surface; and the control unit is provided with an operation interface, and the water supplementing and heating control unit, the dew point detection unit, the humidifying gas control unit and the humidifying spray beam are controlled through the operation interface.
Preferably, the humidified gas control unit includes: the first hand valve, the first flowmeter and the first flow control valve are sequentially connected in series on the first pipeline, wherein the upper limit value of the flow is set through the operation interface, or the opening degree of the first flow control valve is controlled through the operation interface.
Preferably, the water replenishing and heating control unit includes: a humidification water tank for heating desalted water through a heating controller, and setting a target temperature of the heating controller through the operation interface; the humidifying water tank comprises a water supplementing valve, a first liquid level switch and a second liquid level switch, wherein the water supplementing valve, the first liquid level switch and the second liquid level switch are all fixed on the humidifying water tank; the first liquid level switch opens the water replenishing valve to replenish water according to a first signal; the second liquid level switch closes the water replenishing valve according to a second signal; or when the preset water replenishing time of the water replenishing valve meets a preset condition, the control unit controls the water replenishing valve to be closed.
Preferably, the water replenishing and heating control unit further includes: one end of the second pipeline is connected with the humidifying water tank, and mixed gas is conveyed into the humidifying water tank through the second pipeline; the second flow meter is used for detecting the flow of the mixed gas; the second hand valve, the second flowmeter, the second flow control valve and the third hand valve are sequentially connected to the second pipeline in series.
Preferably, the system further comprises: the desalting water control unit is connected with the humidifying water tank and comprises a third pipeline, a fourth hand valve, an electromagnetic valve and a fifth hand valve; the fourth hand valve, the electromagnetic valve and the fifth hand valve are sequentially connected to the third pipeline in series.
Preferably, the dew point detecting unit includes: the system comprises a fourth pipeline, a peristaltic pump and a flow switch, wherein the peristaltic pump and the flow switch are sequentially connected to the fourth pipeline in series.
Preferably, one side of the humidifying spraying beam close to the zinc liquid level adopts a multi-nozzle mode.
Preferably, a preset distance is formed between the humidifying spraying beam and the zinc liquid level, and the range of the preset distance is 300-350 mm.
Preferably, the mixed gas is HNx gas, wherein the volume percentage of the hydrogen content in the HNx gas is 3-3.5%.
Preferably, the set range of the target temperature is 30 ℃ to 100 ℃.
One or more technical solutions in the embodiments of the present invention at least have one or more of the following technical effects:
the embodiment of the invention provides a furnace nose zinc ash control system, which comprises: the humidifying and heating device comprises a control unit, a water supplementing and heating control unit, a dew point detection unit, a humidifying gas control unit and a humidifying spraying beam, wherein the water supplementing and heating control unit is arranged on one side outside a furnace nose and can convey mixed gas into the furnace nose, and the dew point detection unit is connected with the furnace nose and is used for monitoring and controlling gas dew points; the humidifying gas control unit is connected with the furnace nose through the tail end of a first pipeline and conveys mixed gas to the humidifying spray beam; furthermore, because the spray holes of the humidifying spray beams are arranged opposite to the liquid zinc surface, a certain amount of humidifying HNx mixed gas can be injected to the liquid zinc surface by further utilizing the humidifying spray beams, so that a layer of oxidation film is formed on the liquid zinc surface in the furnace nose, the zinc steam can be prevented from further volatilizing, the control unit is provided with an operation interface, and the water supplementing and heating control unit, the dew point detection unit, the humidifying gas control unit and the humidifying spray beams can be automatically controlled through the operation interface without increasing the extra workload of operators, thereby solving the technical problems that the atmosphere of reducing gas in the furnace nose is reduced by introducing humidifying nitrogen in the prior art, the dew point detection configuration is unreasonable, the design of the spray beams is unreasonable, the combination degree with the operators is not high, the zinc ash control efficiency is not high, even the water enters the furnace nose to cause the plating leakage, the system stability and the detection precision are high, the zinc ash inhibition capacity is improved, the loss of high-quality hot-dip galvanized products is reduced, and the technical effects of controlling the stability and the efficiency of the zinc ash are greatly improved.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
FIG. 1 is a schematic structural diagram of a furnace nose zinc ash control system according to an embodiment of the present invention;
FIG. 2 is another schematic structural diagram of a furnace nose zinc ash control system according to an embodiment of the present invention.
Description of reference numerals: 1-water supplement and heating control unit; 11-a humidifying water tank; 12-a first level switch; 13-a second level switch; 14-a second hand valve; 15-a second flow meter; 16-a second flow control valve; 17-a third hand valve; 18-a second conduit; 19-exhaust hole; 2-dew point detection unit; 21-a fourth pipeline; 22-a flow switch; 23-a peristaltic pump; 3-a humidified gas control unit; 31-a first conduit; 32-a first hand valve; 33-a first flow control valve; 34-a first flow meter; 4-humidifying the spraying beam; 5-a control unit; 6-furnace nose; 7-a desalted water control unit; 71-a third line; 72-fourth hand valve; 73-a solenoid valve; 74-fifth hand valve.
Detailed Description
The embodiment of the invention provides a furnace nose zinc ash control system, which is used for solving the technical problems that in the prior art, the introduction of humidifying nitrogen can reduce the atmosphere of furnace nose reducing gas, the dew point detection configuration is unreasonable, the design of a spraying beam is unreasonable, the combination degree with operators is not high, the zinc ash control efficiency is not high, and even water enters the furnace nose to cause plating leakage.
The technical scheme in the embodiment of the invention has the following general idea:
according to the furnace nose zinc ash control system provided by the embodiment of the invention, the water supplementing and heating control unit is arranged on one side outside the furnace nose and is used for conveying mixed gas into the furnace nose; the dew point detection unit is connected with the furnace nose; the humidifying gas control unit is connected with the furnace nose through a first pipeline; the humidifying spraying beams are arranged on two sides of the furnace nose, and spray holes of the humidifying spraying beams are arranged opposite to the zinc liquid surface; and the control unit is provided with an operation interface, and the water supplementing and heating control unit, the dew point detection unit, the humidifying gas control unit and the humidifying spray beam are controlled through the operation interface. The technical effects of high system stability and detection precision, improved zinc ash inhibition capability, reduced loss of high-quality hot-dip galvanized products and greatly improved zinc ash control stability and efficiency are achieved.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Fig. 1 is a schematic structural diagram of a furnace nose zinc ash control system in an embodiment of the present invention, as shown in fig. 1, the system includes:
the water supplementing and heating control unit 1 is arranged on one side of the outer portion of the furnace nose 6 and used for conveying mixed gas into the furnace nose 6.
Further, the water replenishing and heating control unit 1 includes: a humidification water tank 11, wherein the humidification water tank 11 heats desalted water through a heating controller, and a target temperature of the heating controller is set through the operation interface; the humidifying water tank comprises a water supplementing valve, a first liquid level switch 12 and a second liquid level switch 13, wherein the water supplementing valve, the first liquid level switch 12 and the second liquid level switch 13 are all fixed on the humidifying water tank 11; the first liquid level switch 12 opens the water replenishing valve to replenish water according to a first signal; the second liquid level switch 13 closes the water replenishing valve according to a second signal; or, when the preset water replenishing time of the water replenishing valve meets a preset condition, the control unit 5 controls the water replenishing valve to be closed.
Further, the set range of the target temperature is 30 ℃ to 100 ℃.
Particularly, moisturizing and heating control unit 1 includes humidification water pitcher 11, the moisturizing valve, first level switch 12, second level switch 13, and is specific, humidification water pitcher 11 inside has certain accommodation space, can be used to heat water, humidification water pitcher 11 adopts independent heating controller, just still be provided with a gas vent 19 on the top of humidification water pitcher 11. An operator can set a temperature control set point on an operation interface of the control unit 5, can freely set a target temperature, the value range of the target temperature is between 30 ℃ and 100 ℃, and further controls the electric heater to automatically heat the water in the humidification tank 11 through a program internal PID controller; the water replenishing valve is an automatic water replenishing valve, the first liquid level switch 12 is a low liquid level switch, and when the first liquid level switch 12 receives a signal for starting the automatic water replenishing valve, the automatic water replenishing valve is opened to replenish water according to the signal; the second liquid level switch 13 is a high liquid level switch, and when the liquid level reaches the high liquid level controlled by the second liquid level switch 13, the second liquid level switch 13 stops the water replenishing action of the water replenishing valve according to a signal for closing the water replenishing valve; or, can reach the required time of high liquid level according to the liquid level on the control unit's the operation interface and carry out automatic water supply time and set for, work as automatic water supply valve automatic water supply time reaches after presetting the time, automatic water supply valve stops the moisturizing valve action promptly to prevent to cause because of high liquid level switch trouble to continue moisturizing and cause on a large scale to leak to plate in to the stove nose, strengthened the security of humidification water pitcher automatic water supply through double-deck guarantee, solved traditional automatic moisturizing and carried out the moisturizing according to the height liquid level, cause when high liquid level switch breaks down to last the moisturizing can lead to water to enter into the stove nose inside and cause the technical problem that leaks to plate in batches.
Further, the water replenishing and heating control unit 1 further includes: a second pipe 18, one end of the second pipe 18 being connected to the humidification water tank 11, and the mixed gas being supplied into the humidification water tank 11 through the second pipe 18; a second flow meter 15 and a second flow control valve 16, wherein the second flow meter 15 is used for detecting the flow of the mixed gas; the second hand valve 14 and the third hand valve 17, wherein the second hand valve 14, the second flowmeter 15, the second flow control valve 16 and the third hand valve 17 are connected in series on the second pipeline 18 in sequence.
Further, the mixed gas is HNx gas, wherein the volume percentage of the hydrogen content in the HNx gas is 3% -3.5%.
Specifically, the water replenishing and heating control unit 1 further includes a second pipeline 18, a second hand valve 14, a second flow meter 15, a second flow control valve 16, and a third hand valve 17, wherein the end of the second pipeline 18 is connected to the humidification water tank 11 and then conveys a mixed gas to the interior of the humidification water tank 11, and the mixed gas is HNx gas, wherein the hydrogen content of the mixed gas is 3% to 3.5% by volume. The flow rate of the HNx gas (hydrogen content 3% to 3.5%) can be monitored and controlled by the second flow meter 15 and the second flow control valve 16.
And the dew point detection unit 2 is connected with the furnace nose 6 through the dew point detection unit 2.
Further, the dew point detecting unit 2 includes: the device comprises a fourth pipeline 21, a peristaltic pump 23 and a flow switch 22, wherein the peristaltic pump 23 and the flow switch 22 are sequentially connected to the fourth pipeline 21 in series.
Particularly, dew point detection unit 2 includes fourth pipeline 21, peristaltic pump 23 and flow switch 22's installation, fourth pipeline 21 the end with stove nose 6 is connected, through peristaltic pump 23 and the gaseous dew point of flow switch 22 monitoring and control guarantee to detect reliability and accuracy through this flow switch, guaranteed that flow reduces to can in time discover under the sample requirement flow when the zinc ash blocks up the sampling tube, further guaranteed the selectivity and the control accuracy of system prevent to appear because of the sample pipeline blocks up to cause to detect inaccurate and the humidifying quantity appears belted steel and leak the risk of plating.
A humidified gas control unit 3, the humidified gas control unit 3 being connected to the furnace nose 6 through a first pipe 31.
Further, the humidified-gas control unit 3 includes: a first hand valve 32, a first flow meter 34, and a first flow control valve 33, wherein the first hand valve 32, the first flow meter 34, and the first flow control valve 33 are connected in series to the first pipe 31 in this order, and wherein a flow upper limit value is set via the operation interface, or the opening degree of the first flow control valve 31 is controlled via the operation interface.
Specifically, the humidified gas control unit 3 is configured to detect and control the flow rate of the humidified HNx gas, and the humidified gas control unit 3 includes: first pipeline 31, first hand valve 32, first flowmeter 34, first flow control valve 33, first flowmeter 34 is the high accuracy flowmeter of vortex street, wherein, the end of first pipeline 31 with humidification spray beam 4 that sets up on furnace nose 6 is connected, through revising the annealing stove procedure can automatic set for the target flow on the control screen of control unit 5 or control the aperture of first flow control valve 33, can manual control when the flow detects the problem and humidify the gaseous injection of HNx (hydrogen content 3% ~ 3.5%) into, control the gas reaches the target dew point value in the furnace nose 6, and then has guaranteed the control selectivity and the control accuracy of system.
The humidifying spraying beam 4 is arranged on two sides of the furnace nose 6, and the spray holes of the humidifying spraying beam 6 are opposite to the zinc liquid surface.
Furthermore, a multi-spray-hole mode is adopted on one side of the humidifying spraying beam 4 close to the zinc liquid level.
Furthermore, a preset distance is arranged between the humidifying spraying beam 4 and the zinc liquid level, and the range of the preset distance is 300-350 mm.
Specifically, the humidifying spray beams 4 are positioned at two sides of the furnace nose 6, gas is sent to the humidifying spray beams 4 through the first pipeline 32 and further sent to the zinc liquid surface, the humidifying spray beams 4 adopt a non-traditional multi-spray-hole type mode, the spray holes are arranged towards the zinc liquid surface, a spray seam in the furnace nose 6 is controlled to be downward at a certain angle and is controlled to be at a certain attack angle with zinc liquid steam, namely, the installation mode of the furnace nose 6 forms a certain angle with the zinc liquid surface, so that the humidifying spray beams 4 cannot directly spray the surface, the distance from the humidifying spray beams 4 to the zinc liquid surface is 300-350 mm, and humidifying HNx (hydrogen content is 3% -3.5%) gas with a certain proportion is introduced into the furnace nose, so that a uniform protective oxide film is formed on the zinc liquid surface in the furnace nose, and the zinc steam can be prevented from further volatilization, thereby greatly reducing the zinc ash defect on the surface of the hot-dip galvanized strip steel and providing favorable guarantee for improving the surface quality of products.
And the control unit 5 is provided with an operation interface, and the water supplementing and heating control unit 1, the dew point detection unit 2, the humidified gas control unit 3 and the humidifying spray beam 4 are controlled through the operation interface.
Specifically, the control unit 5 is a core control element of the system, the control unit 5 is an automatic control unit, that is, an operator only needs to control other components of the system on an operation interface of the furnace, and the control unit 5 is integrated with a control program of the annealing furnace and a corresponding operation interface, without increasing extra workload of the operator, that is, the operation interface controls the water replenishing and heating control unit 1, the dew point detection unit 2, the humidifying gas control unit 3 and the humidifying spray beam 4, so that the zinc ash defect on the surface of a strip steel annealing hot-dip galvanizing product is reduced, and the technical effect of laying a foundation for developing high-end automobile strip steel, especially for outer plate steel is achieved. Furthermore, through the automatic control of the control unit, the humidification nitrogen is introduced into the furnace nose in the traditional furnace humidifying method, corresponding rules and standards are formulated on the basis, meanwhile, the design of the spraying beam is unreasonable, the spraying beam is integrated with the furnace control system separately, the combination degree with operators is not high, the zinc ash control efficiency is not high, even the water inflow in the furnace nose causes the technical problem of plating leakage, the workload of workers is reduced, the zinc ash defect of a hot-galvanized product of strip steel annealing is reduced, through the furnace nose zinc ash control automatic system which is reasonable in design, the zinc ash amount generated in the furnace nose is effectively controlled, and the technical effect of improving the surface quality of the hot-galvanized high-end product is achieved.
Further, the system further comprises: a desalted water control unit 7, wherein the desalted water control unit 7 is connected to the humidification water tank 11, and wherein the desalted water control unit 7 comprises a third pipeline 71, a fourth hand valve 72, an electromagnetic valve 73 and a fifth hand valve 74; the fourth hand valve 72, the electromagnetic valve 73 and the fifth hand valve 74 are connected in series to the third pipeline 71 in sequence.
Specifically, the desalted water control unit 7 is connected to the humidification water tank 11 through a third pipe 71, that is, the end of the third pipe 71 is connected to the humidification water tank 11, and the desalted water control unit 7 includes a third pipe 71, a fourth hand valve 72, an electromagnetic valve 73, and a fifth hand valve 74, and supplies desalted water into the humidification water tank 11 through the third pipe 71 to increase the humidification water in the humidification water tank 11.
One or more technical solutions in the embodiments of the present invention at least have one or more of the following technical effects:
the embodiment of the invention provides a furnace nose zinc ash control system, which comprises: the humidifying and heating device comprises a control unit, a water supplementing and heating control unit, a dew point detection unit, a humidifying gas control unit and a humidifying spraying beam, wherein the water supplementing and heating control unit is arranged on one side outside a furnace nose and can convey mixed gas into the furnace nose, and the dew point detection unit is connected with the furnace nose and is used for monitoring and controlling gas dew points; the humidifying gas control unit is connected with the furnace nose through the tail end of a first pipeline and conveys mixed gas to the humidifying spray beam; furthermore, because the spray holes of the humidifying spray beams are arranged opposite to the liquid zinc surface, a certain amount of humidifying HNx mixed gas can be injected to the liquid zinc surface by further utilizing the humidifying spray beams, so that a layer of oxidation film is formed on the liquid zinc surface in the furnace nose, the zinc steam can be prevented from further volatilizing, the control unit is provided with an operation interface, and the water supplementing and heating control unit, the dew point detection unit, the humidifying gas control unit and the humidifying spray beams can be automatically controlled through the operation interface without increasing the extra workload of operators, thereby solving the technical problems that the atmosphere of reducing gas in the furnace nose is reduced by introducing humidifying nitrogen in the prior art, the dew point detection configuration is unreasonable, the design of the spray beams is unreasonable, the combination degree with the operators is not high, the zinc ash control efficiency is not high, even the water enters the furnace nose to cause the plating leakage, the system stability and the detection precision are high, the zinc ash inhibition capacity is improved, the loss of high-quality hot-dip galvanized products is reduced, and the technical effects of controlling the stability and the efficiency of the zinc ash are greatly improved.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention without departing from the spirit or scope of the embodiments of the invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to encompass such modifications and variations.
Claims (8)
1. A furnace nose zinc ash control system, the system comprising:
the water replenishing and heating control unit is arranged on one side outside the furnace nose and used for conveying mixed gas into the furnace nose;
the dew point detection unit is connected with the furnace nose;
the humidifying gas control unit is connected with the furnace nose through a first pipeline;
the humidifying spraying beams are arranged on two sides of the furnace nose, and spray holes of the humidifying spraying beams are arranged opposite to the zinc liquid surface;
the control unit is provided with an operation interface, and the water supplementing and heating control unit, the dew point detection unit, the humidifying gas control unit and the humidifying spray beam are controlled through the operation interface;
wherein the humidified-gas control unit includes: the first hand valve, the first flow meter and the first flow control valve are sequentially connected in series on the first pipeline, wherein the upper limit value of the flow is set through the operation interface, or the opening of the first flow control valve is controlled through the operation interface;
when the flow rate is detected to be in a problem, manually controlling the injection of the mixed gas, and controlling the gas in the furnace nose to reach a target dew point value;
the mixed gas is HNx gas, wherein the volume percentage of the hydrogen content in the HNx gas is 3-3.5%.
2. The system of claim 1, wherein the refill and heat control unit comprises:
a humidification water tank for heating desalted water through a heating controller, and setting a target temperature of the heating controller through the operation interface;
the humidifying water tank comprises a water supplementing valve, a first liquid level switch and a second liquid level switch, wherein the water supplementing valve, the first liquid level switch and the second liquid level switch are all fixed on the humidifying water tank;
the first liquid level switch opens the water replenishing valve to replenish water according to a first signal; the second liquid level switch closes the water replenishing valve according to a second signal; or when the preset water replenishing time of the water replenishing valve meets a preset condition, the control unit controls the water replenishing valve to be closed.
3. The system of claim 2, wherein the refill and heat control unit further comprises:
one end of the second pipeline is connected with the humidifying water tank, and mixed gas is conveyed into the humidifying water tank through the second pipeline;
the second flow meter is used for detecting the flow of the mixed gas;
the second hand valve, the second flowmeter, the second flow control valve and the third hand valve are sequentially connected to the second pipeline in series.
4. The system of claim 2, wherein the system further comprises:
the desalting water control unit is connected with the humidifying water tank and comprises a third pipeline, a fourth hand valve, an electromagnetic valve and a fifth hand valve;
the fourth hand valve, the electromagnetic valve and the fifth hand valve are sequentially connected to the third pipeline in series.
5. The system of claim 1, wherein the dew point detection unit comprises:
the system comprises a fourth pipeline, a peristaltic pump and a flow switch, wherein the peristaltic pump and the flow switch are sequentially connected to the fourth pipeline in series.
6. The system as claimed in claim 1, wherein the humidifying spray beam is provided with a plurality of spray holes on one side close to the zinc liquid level.
7. The system of claim 1, wherein the humidifying spraying beam is a predetermined distance from the zinc liquid surface, and the predetermined distance is 300-350 mm.
8. The system of claim 2, wherein the target temperature is set in a range of 30 ℃ to 100 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811171118.5A CN109385592B (en) | 2018-10-09 | 2018-10-09 | Furnace nose zinc ash control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811171118.5A CN109385592B (en) | 2018-10-09 | 2018-10-09 | Furnace nose zinc ash control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109385592A CN109385592A (en) | 2019-02-26 |
| CN109385592B true CN109385592B (en) | 2021-04-09 |
Family
ID=65426688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811171118.5A Active CN109385592B (en) | 2018-10-09 | 2018-10-09 | Furnace nose zinc ash control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109385592B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110396657A (en) * | 2019-08-07 | 2019-11-01 | 北京首钢冷轧薄板有限公司 | A kind of cold rolling produces the surface control process of 800MPa grades of dual phase steels |
| CN114250430B (en) * | 2020-09-21 | 2024-01-09 | 宝山钢铁股份有限公司 | Furnace nose internal atmosphere temperature control method and heating device beneficial to inhibiting zinc ash |
| CN113063192B (en) * | 2021-04-06 | 2022-08-19 | 首钢京唐钢铁联合有限责任公司 | Humidifying device and humidifying method |
| CN114517279B (en) * | 2022-01-05 | 2024-05-10 | 首钢京唐钢铁联合有限责任公司 | Zinc-aluminum-magnesium product zinc ash zinc slag defect control method |
| CN114411079B (en) * | 2022-01-10 | 2023-01-24 | 山东恩光新材料有限公司 | Air cooling device |
| CN115287567A (en) * | 2022-08-04 | 2022-11-04 | 江阴市华达机械科技有限公司 | Stove nose humidification system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202380066U (en) * | 2011-11-11 | 2012-08-15 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Wet zinc ash removal device of furnace grate of annealing furnace of hot galvanizing line |
| CN106480388A (en) * | 2015-09-02 | 2017-03-08 | 上海东新冶金技术工程有限公司 | Suppress dry and wet gas humidification by mixing of gas device and its using method of zinc gray for galvanizing |
-
2018
- 2018-10-09 CN CN201811171118.5A patent/CN109385592B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202380066U (en) * | 2011-11-11 | 2012-08-15 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Wet zinc ash removal device of furnace grate of annealing furnace of hot galvanizing line |
| CN106480388A (en) * | 2015-09-02 | 2017-03-08 | 上海东新冶金技术工程有限公司 | Suppress dry and wet gas humidification by mixing of gas device and its using method of zinc gray for galvanizing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109385592A (en) | 2019-02-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109385592B (en) | Furnace nose zinc ash control system | |
| CN108842121A (en) | A kind of strip continuous hot-dipping Zn system | |
| CN101342545A (en) | Lubrication system of hot-tandem rolling finishing rolling unit | |
| CN102392128A (en) | Acid adding device with accurate and automatic pH value control function | |
| CN212515489U (en) | Integrated humidifying system for adjusting dew point | |
| CN201793698U (en) | Furnace nose wetting device for hot galvanizing machine | |
| CN110042336B (en) | Nose nitrogen humidifying device of hot galvanizing furnace | |
| CN205011819U (en) | A dry moisture humidification by mixing of gas device for hot -galvanize suppression zinc gray | |
| CN111304424A (en) | Stove nose humidifier | |
| CN201545901U (en) | Humidifying device | |
| CN106676251B (en) | A kind of device and method for preventing furnace roller dross in high-strength steel annealing process | |
| CN107575748A (en) | Steam tracing device | |
| CN110819925A (en) | On-line treatment method for furnace nose zinc ash of galvanized strip steel production line | |
| CN106480388A (en) | Suppress dry and wet gas humidification by mixing of gas device and its using method of zinc gray for galvanizing | |
| CN110820001A (en) | Control method and equipment for reducing acid loss and iron loss in acid pickling process | |
| CN108395113A (en) | Online float glass process coated glass transition roller table SO2Protect gas system and operating method | |
| CN103497078A (en) | Finished product ammonium nitrate aqueous solution pH value controlling method and device thereof | |
| CN105709655A (en) | Atmosphere united gas distributing device for hot-dip plating experiment and method of atmosphere united gas distributing device | |
| CN109778094A (en) | A kind of humidifier for hot galvanizing furnace nose humidification | |
| CN113512634A (en) | Annealing furnace pre-oxidation equipment and method | |
| CN208649133U (en) | Online float glass process coated glass transition roller table SO2 protects gas system | |
| CN202543264U (en) | Vacuum furnace gas recovering and helium nitrogen mixing system | |
| CN104019371B (en) | coating system | |
| CN106914499B (en) | Reduce the device of emulsion system chloride ion content | |
| CN208995570U (en) | Hot-galvanize stove nose humidification pipeline structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |