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CN110004411B - Alloy coating method - Google Patents

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Publication number
CN110004411B
CN110004411B CN201910251974.XA CN201910251974A CN110004411B CN 110004411 B CN110004411 B CN 110004411B CN 201910251974 A CN201910251974 A CN 201910251974A CN 110004411 B CN110004411 B CN 110004411B
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metal
steel plate
steam
mixed
air nozzle
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CN110004411A (en
Inventor
刘昕
张启富
江社明
仲海峰
习中革
李远鹏
张�杰
邱肖盼
高志强
张子月
刘鹏
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Gangyan Engineering Design Co ltd
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Beijing Gangyan New Metallurgy Engineering Design Co ltd
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    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING 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
    • C23C14/00Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/06Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
    • C23C14/14Metallic material, boron or silicon
    • C23C14/16Metallic material, boron or silicon on metallic substrates or on substrates of boron or silicon
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING 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
    • C23C14/00Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/22Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
    • C23C14/24Vacuum evaporation
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING 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
    • C23C14/00Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/22Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
    • C23C14/56Apparatus specially adapted for continuous coating; Arrangements for maintaining the vacuum, e.g. vacuum locks
    • C23C14/562Apparatus specially adapted for continuous coating; Arrangements for maintaining the vacuum, e.g. vacuum locks for coating elongated substrates

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  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)

Abstract

本发明公开了一种合金镀膜方法,属于真空镀膜技术领域,解决钢板连续真空镀膜过程中镀膜不均匀、镀膜种类单一的问题。本发明的方法包括如下步骤:将钢板进行除油和电解清洗后送入真空腔室;将真空腔室中的钢板预热后进行表面离子清洗;将清洗后的钢板送入蒸镀装置进行双金属混合镀膜、单金属‑单金属复合镀膜或单金属‑双金属混合‑单金属复合镀膜。本发明的方法可用于连续生产真空镀不同元素含量合金镀膜钢板。

Figure 201910251974

The invention discloses an alloy coating method, which belongs to the technical field of vacuum coating, and solves the problems of uneven coating and single coating type in the continuous vacuum coating process of steel plates. The method of the invention comprises the following steps: degreasing and electrolytically cleaning the steel plate and then sending it into a vacuum chamber; preheating the steel plate in the vacuum chamber and then carrying out surface ion cleaning; sending the cleaned steel plate into an evaporation device for double Metal Hybrid Coating, Monometallic-Monometallic Composite Coating or Monometallic-Bimetallic Hybrid-Monometallic Composite Coating. The method of the invention can be used for the continuous production of vacuum-plated alloy-coated steel sheets with different element contents.

Figure 201910251974

Description

Alloy coating method
Technical Field
The invention relates to an alloy coating method, in particular to a method for continuously producing vacuum-coated alloy coated steel plates with different element contents.
Background
The vacuum coating technology, namely the physical vapor deposition technology, has the advantages of unlimited coating varieties, flexible products, realization of product customization, capability of meeting the requirements of different users on different use environments and the like, and the coating can be inorganic, organic, single metal, alloy and the like, so that the vacuum coating technology is widely applied. At present, the batch vacuum coating technology in China is mature and widely applied, namely, the produced parts are put into a coating machine for coating, and are taken out after coating is finished, so that continuous operation cannot be realized; however, the continuous vacuum coating technology has no self-established example in China, and particularly, a steel strip continuous vacuum coating production line has no corresponding report in China. Due to the technical progress and the increase of market demand, the industrialization of continuously producing vacuum coated steel plates is a development trend of the steel plate surface treatment industry at present. In the vacuum coating technology, generally, a coating material is required to be heated to a high temperature and then cooled to a steel plate to form a film, the coating material forms gas in the coating process, the gas has instability, and the film is formed unevenly due to the large size of a vacuum coating cavity; moreover, the coating device in the prior art can only plate a coating film with one component, when different types of coating films are directly switched, different evaporation systems need to be replaced, time and labor are wasted, and a steel plate coated with multiple components cannot be produced at one time. The invention provides a method for continuously producing alloy coated steel plates plated in vacuum with different element contents, which can produce composite alloy coated steel plates with adjustable components in a vacuum environment at one time.
Disclosure of Invention
In view of the above analysis, the present invention aims to provide an alloy coating method, which solves the problems of uneven coating and single type of coating in the continuous vacuum coating process of the steel plate (strip) in the prior art.
The purpose of the invention is mainly realized by the following technical scheme:
the invention provides an alloy coating method, which comprises the following steps:
step S1, deoiling and electrolytically cleaning the steel plate and then sending the steel plate into a vacuum chamber;
step S2, preheating the steel plate in the vacuum chamber and then carrying out surface ion cleaning;
and step S3, sending the cleaned steel plate into an evaporation device for bimetal mixed coating, single metal-single metal composite coating or single metal-bimetal mixed-single metal composite coating.
In one possible design, in step S3, the bimetal hybrid coating is: heating the metal in the two metal melting containers to a gas state, conveying metal steam to a mixed steam box through a main steam pipeline, fully mixing the metal steam in the mixed steam box, and spraying the metal steam out of an air nozzle to deposit on the surface of a steel plate to form a bimetal mixed film;
in one possible design, in step S3, the single metal-single metal composite plating film is: respectively heating the metal in the two metal melting containers to a gas state, and spraying out the first metal vapor through the gas nozzles of the first vapor distribution pipeline to deposit on the surface of the steel plate; the steel plate continues to move, and the second metal vapor is sprayed out through the air nozzle of the second vapor distribution pipeline and deposited on the surface of the steel plate; forming a single metal-single metal composite film;
in one possible design, in step S3, the single metal-bimetal hybrid-single metal composite coating film is: heating the metal in the two metal melting containers to a gas state, and spraying out the first metal vapor through the gas nozzles of the first vapor distribution pipeline to deposit on the surface of the steel plate; the steel plate continues to move, and the mixed metal steam in the mixed steam box is sprayed out from the air nozzle and deposited on the surface of the steel plate; the steel plate continues to move, and the second metal vapor is sprayed out through the air nozzle of the second vapor distribution pipeline and deposited on the surface of the steel plate; finally forming the single metal-double metal mixed-single metal composite film.
In one possible design, the evaporation apparatus in step S3 includes a vacuum chamber; a conveying roller is arranged on the side of the vacuum cavity and used for conveying the steel plate; two metal melting containers are arranged in the vacuum cavity; the metal melting container is respectively connected with the mixed steam box through a main steam pipeline; the side of the main steam pipeline is also provided with a steam distribution pipeline, and the mixed steam box and the steam distribution pipeline are both provided with air nozzles with adjustable openings, and the air nozzles are used for coating the steel plate.
In one possible design, in step S2, the steel plate is preheated to a certain temperature, for example, to 150-.
In one possible design, both the main vapor line and the partial vapor line are provided with flow controllers and/or one-way valves.
In one possible embodiment, the air nozzle is an elongated nozzle channel, the length of which can be adjusted.
In one possible design, heating devices are disposed around the metal melting vessel, the main vapor conduit, the branch vapor conduit, the mixed vapor box, and the gas nozzles.
In one possible design, the heating device is induction heating, resistance wire heating or far infrared heating.
In one possible design, the metal melting vessel, the main vapor conduit, the branch vapor conduit, and the mixing vapor box are each provided with a temperature sensor.
In one possible design, the side of the vacuum chamber is provided with an observation window
Compared with the prior art, the invention can realize at least one of the following beneficial effects:
a) the device adopted by the alloy coating method provided by the invention is provided with two metal melting containers, two steam distribution pipelines and a mixed steam box, so that the steel plates coated with different components can be produced under the condition of not replacing the system, and single metal coating, double metal mixed coating, single metal-single metal composite coating or single metal-double metal mixed-single metal composite coating can be carried out, the structure is simple, the variety of the realized coating is rich, and the production efficiency is obviously improved; the arrangement of the steam distributing pipeline and the mixed steam box can avoid the mutual pollution of metal steam and accurately control the component content of the alloy film layer.
b) According to the alloy coating method provided by the invention, the conveying rollers for placing the steel plate are arranged on the side edges of the vacuum cavity, so that continuous production can be realized, and the production efficiency is improved.
c) The alloy coating method provided by the invention is characterized in that the air nozzles are arranged on the mixed steam box and the steam distribution pipeline, a pressure difference is formed between the inside and the outside of the nozzle through a narrow nozzle channel, the pressure difference enables metal steam to be sprayed out at a high speed to reach the surface of a steel plate, and metal steam particles are impacted and deposited on the surface of the steel plate to form a compact and uniform film layer.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the means particularly pointed out in the written description and drawings.
Drawings
The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout.
Fig. 1 is a side view of a vapor deposition device according to embodiment 1 of the present invention.
Reference numerals:
1-a first metal melting vessel; 2-a second metal melting vessel; 3-a first main vapor conduit; 31-a first vapor-dividing conduit; 4-a second main vapor conduit; 41-a second partial vapor conduit; 5-mixed steam box; 6-an air nozzle; 7-a first flow controller; 8-a second flow controller; 9-a steel plate; 10-a transfer roll; 12-vacuum chamber.
Detailed Description
The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form a part hereof, and which together with the embodiments of the invention serve to explain the principles of the invention.
Example 1
The embodiment discloses an alloy coating method, which comprises the following steps:
step S1, deoiling and electrolytically cleaning the steel plate and then sending the steel plate into a vacuum chamber;
step S2, preheating the steel plate in the vacuum chamber and then carrying out surface ion cleaning;
and step S3, sending the steel plate after ion cleaning into an evaporation device for carrying out bimetal mixed coating, single metal-single metal composite coating or single metal-bimetal mixed-single metal composite coating.
The evaporation apparatus used in step S3 (see fig. 1) includes a vacuum chamber 12; conveying rollers 10 are arranged on the side edges of the vacuum cavity 12, and the conveying rollers 10 are used for conveying the steel plate 9; a first metal melting container 1 and a second metal melting container 2 are arranged in the vacuum cavity 12; the first metal melting container 1 is connected with a mixed steam box 5 through a first main steam pipeline 3, and the second metal melting container 2 is connected with the mixed steam box 5 through a second main steam pipeline 4; the mixed steam box 5 is provided with an air nozzle 6, and the air nozzle 6 is used for coating a film on the steel plate 9; a first steam dividing pipeline 31 is arranged on the side edge of the first main steam pipeline 3, and a second steam dividing pipeline 41 is arranged on the side edge of the second main steam pipeline 4; and the first steam dividing pipeline and the second steam dividing pipeline are both provided with air nozzles.
Further, in step S3, the bimetal hybrid coating film is: heating the metal in the two metal melting containers to a gas state, conveying metal steam to a mixed steam box through a main steam pipeline, fully mixing the metal steam in the mixed steam box, and spraying the metal steam out of an air nozzle to deposit on the surface of a steel plate to form a bimetal mixed film;
in the step S3, the single metal-single metal composite plating film is: respectively heating the metal in the two metal melting containers to a gas state, and spraying out the first metal vapor through the gas nozzles of the first vapor distribution pipeline to deposit on the surface of the steel plate; the steel plate continues to move, and the second metal vapor is sprayed out through the air nozzle of the second vapor distribution pipeline and deposited on the surface of the steel plate; forming a single metal-single metal composite film;
in the step S3, the single metal-bimetal hybrid-single metal composite plating film is: heating the metal in the two metal melting containers to a gas state, and spraying out the first metal vapor through the gas nozzles of the first vapor distribution pipeline to deposit on the surface of the steel plate; the steel plate continues to move, and the mixed metal steam in the mixed steam box is sprayed out from the air nozzle and deposited on the surface of the steel plate; the steel plate continues to move, and the second metal vapor is sprayed out through the air nozzle of the second vapor distribution pipeline and deposited on the surface of the steel plate; finally forming the single metal-double metal mixed-single metal composite film.
Compared with the prior art, the device used by the alloy coating method provided by the embodiment is provided with the two metal melting containers, the two steam distribution pipelines and the mixed steam box, so that the steel plates coated with different components can be produced under the condition of not replacing the system, and single metal coating, double metal mixed coating, single metal-single metal composite coating or single metal-double metal mixed-single metal composite coating can be carried out, the structure is simple, the variety of the realized coating is rich, and the production efficiency is obviously improved; the arrangement of the steam distributing pipeline and the mixed steam box can avoid the mutual pollution of metal steam and accurately control the component content of the alloy film layer; the mixed steam box and the steam distributing pipeline are both provided with air nozzles, the narrow nozzle channel enables the inside and the outside of the nozzle to form pressure difference, the pressure difference enables the metal steam to be sprayed out at a high speed to reach the surface of the steel plate, and metal steam particles are impacted and deposited on the surface of the steel plate to form a compact and uniform film layer.
Of course, in step S3, a metal, such as zinc, is placed in the first metal melting vessel; heating the metal in the first metal melting container to a gas state without placing metal in the second metal melting container, and spraying out the first metal vapor through an air nozzle of a first vapor distribution pipeline to deposit on the surface of a steel plate; this also enables the coating of one element on the surface of the steel sheet.
Specifically, a first flow controller 7 is arranged on the first main steam pipeline 3, a second flow controller 8 is arranged on the second main steam pipeline 4, and flow controllers are arranged on the first partial steam pipeline 31 and the second partial steam pipeline 41 respectively and are used for accurately controlling the steam flow so as to obtain different types of alloy coating films, such as single metal coating films, double metal mixed coating films, single metal-single metal composite coating films or single metal-double metal mixed-single metal composite coating films; for example, the alloy coating film may be a pure zinc coating film, a pure aluminum coating film, a zinc-magnesium mixed film, a zinc-magnesium composite film, a zinc-magnesium mixed-magnesium composite film, an aluminum-magnesium alloy coating film, or other low melting point alloy metals; other refractory metal elements are technically possible if the cost of heating is not a concern.
Specifically, in step S2, the steel plate is preheated to a certain temperature, for example, the steel plate is preheated to 150-.
Furthermore, a channel for placing an air nozzle is arranged on the mixed steam box, the air nozzle is of a detachable structure, the air nozzle is a long-strip-shaped nozzle channel, a sliding rail is arranged on the air nozzle along the length direction, a cover plate capable of moving along the sliding rail is arranged above the air nozzle, the cover plate is flatly laid above the air nozzle, the length of the nozzle channel can be adjusted to be consistent with the width of a steel plate by sliding the cover plate away from the steel plate and approaching the steel plate, and the metal steam waste caused by the fact that the length of the nozzle channel is greater than the width of the steel plate is prevented; preferably, the air nozzle is provided with a motor, a width sensor is arranged on the mixed steam box, the motor and the width sensor are both connected with the controller, the width sensor is used for measuring the width of the steel plate and feeding back data to the controller, and the controller drives the motor to realize automatic adjustment of the cover plate.
Preferably, the arc-shaped baffles with adjustable angles are arranged on the two sides of the air nozzle and used for adjusting the width of the air nozzle, and when the required coating thickness is thicker, the arc-shaped baffles are adjusted to increase the width of the air nozzle and increase the metal vapor flow; when the required coating film thickness is thinner, the width of the air nozzle is reduced by adjusting the arc-shaped baffle plate, and the metal vapor flow is reduced.
Preferably, the mixed steam box is provided with 3 channels for placing the air nozzles, the channels are provided with covers, when composite coating is carried out, the air nozzles can be placed on different narrow channels according to requirements, the distance between the air nozzles and other air nozzles is adjusted, and the time between different processes is further controlled.
It is worth noting that the main steam pipeline and the steam distributing pipeline are both provided with one-way valves, and the flow direction of the one-way valves is from the main steam pipeline to the mixed steam box, so that the metal solution is prevented from being polluted by the mutual diffusion of different metal steam.
Further, the number of metal melting vessels is the same as the number of main vapor pipes.
In order to avoid the deposition of the cooled metal vapor on the inner wall of the main vapor pipeline or the mixed vapor box in the film coating process, heating devices are arranged around the metal melting container, the main vapor pipeline, the vapor distribution pipeline, the mixed vapor box and the air nozzle.
Specifically, the heating device is induction heating, resistance wire heating or far infrared heating.
Preferably, the induction heating devices are arranged around the metal melting container, so that rapid and uniform heating can be realized; heating belts are arranged around the main steam pipeline, the steam distribution pipeline, the mixed steam box and the air nozzle, so that metal steam is prevented from being deposited on the inner walls of the main steam pipeline, the steam distribution pipeline or the mixed steam box after being cooled in a film coating process, and the air nozzle is prevented from being blocked.
In order to optimize the gas flow path of the metal vapor, the upper end of the metal melting container is provided with a guide plate, the guide plate is connected with a main vapor pipeline, the metal vapor enters the main vapor pipeline along the guide plate, the efficiency is improved, and meanwhile, the waste of the metal vapor is avoided.
Preferably, the cross section of the part of the mixed steam box connected with the main steam pipeline is isosceles trapezoid, and the side far away from the main steam pipeline is the long side of the trapezoid; the part of the mixed steam box connected with the air nozzle is a cuboid, so that the mixed steam box is suitable for batch production; the mixed steam box is internally provided with a guide plate, the metal steam in the main steam pipeline enters the mixed steam box and then expands and is uniformly mixed, and the uniformly mixed metal steam is sprayed out from the guide plate to the air nozzle for coating. The flow direction of metal vapor can be optimized in the setting of guide plate, avoids metal vapor's loss.
In particular, the baffle may be curved.
Specifically, the metal melting container, the main steam pipeline, the steam distributing pipeline and the mixed steam box are all provided with temperature sensors, so that the temperature can be accurately controlled, and the accurate implementation of the production process is guaranteed.
It should be noted that the transfer roller 10 can rotate continuously, thereby achieving continuous production and improving production efficiency.
In order to observe the production situation, the side of the vacuum chamber 12 is provided with an observation window.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.

Claims (9)

1. The alloy coating method is characterized by comprising the following steps:
step S1, deoiling and electrolytically cleaning the steel plate and then sending the steel plate into a vacuum chamber;
step S2, preheating the steel plate in the vacuum chamber and then carrying out surface ion cleaning;
step S3, sending the cleaned steel plate into an evaporation device for bimetal mixed coating, single metal-single metal composite coating or single metal-bimetal mixed-single metal composite coating;
in the step S3, the single metal-bimetal mixed-single metal composite plating film is: heating the metal in the two metal melting containers to a gas state, and spraying out the first metal vapor through the gas nozzles of the first vapor distribution pipeline to deposit on the surface of the steel plate; the steel plate continues to move, and the mixed metal steam in the mixed steam box is sprayed out from the air nozzle and deposited on the surface of the steel plate; the steel plate continues to move, and the second metal vapor is sprayed out through the air nozzle of the second vapor distribution pipeline and deposited on the surface of the steel plate; finally forming a single metal-double metal mixed-single metal composite film;
the evaporation device used in the step S3 comprises a vacuum cavity (12); conveying rollers (10) are arranged on the side edges of the vacuum cavity (12), and the conveying rollers (10) are used for conveying the steel plate (9); a first metal melting container (1) and a second metal melting container (2) are arranged in the vacuum cavity (12); the first metal melting container (1) is connected with the mixed steam box (5) through a first main steam pipeline (3), and the second metal melting container (2) is connected with the mixed steam box (5) through a second main steam pipeline (4); the mixed steam box (5) is provided with an air nozzle (6), and the air nozzle (6) is used for coating a film on the steel plate (9); a first steam dividing pipeline (31) is arranged on the side edge of the first main steam pipeline (3), and a second steam dividing pipeline (41) is arranged on the side edge of the second main steam pipeline (4); the first steam distributing pipeline and the second steam distributing pipeline are both provided with air nozzles;
the air nozzle is a strip-shaped nozzle channel, and the air nozzle is provided with a movable baffle plate for adjusting the length of the nozzle channel; arc-shaped baffles with adjustable angles are arranged on two sides of the air nozzle and used for adjusting the width of the air nozzle;
the air nozzle is of a detachable structure, 3 channels for placing the air nozzle are arranged on the mixed steam box, the channels are provided with covers, the air nozzle can be placed on different channels as required during composite coating, and the distance between the air nozzle on the mixed steam box and other air nozzles is adjusted;
and a guide plate is arranged at the upper end of the metal melting container.
2. The alloy plating method according to claim 1, wherein in step S3, the bimetal mixed plating film is: heating the metal in the two metal melting containers to a gas state, conveying metal steam to a mixed steam box through a main steam pipeline, fully mixing the metal steam in the mixed steam box, and spraying the metal steam out of an air nozzle to deposit on the surface of a steel plate to form a bimetal mixed film;
in the step S3, the single metal-single metal composite plating film is: respectively heating the metal in the two metal melting containers to a gas state, and spraying out the first metal vapor through the gas nozzles of the first vapor distribution pipeline to deposit on the surface of the steel plate; the steel plate continues to move, and the second metal vapor is sprayed out through the air nozzle of the second vapor distribution pipeline and deposited on the surface of the steel plate; forming a single metal-single metal composite film.
3. The alloy plating method as claimed in claim 1, wherein the steel plate is preheated to 150-200 ℃ in step S2.
4. The alloy coating method according to claim 1, wherein the main vapor pipe and the vapor distribution pipe are provided with flow controllers and/or check valves.
5. The alloy plating method according to claim 1, wherein the air nozzle is an elongated nozzle channel, and the length of the nozzle channel can be adjusted.
6. The alloy coating method according to claim 5, wherein heating means are provided around the metal melting vessel, the main vapor pipe, the branch vapor pipe, the mixing vapor tank and the air nozzle.
7. The alloy plating method according to claim 6, wherein the heating device is induction heating, resistance wire heating or far infrared heating.
8. The alloy coating method according to claim 7, wherein the metal melting vessel, the main vapor pipe, the branch vapor pipe and the mixing vapor tank (5) are provided with temperature sensors.
9. The alloy plating method according to any one of claims 1 to 7, characterized in that a viewing window is arranged at the side of the vacuum chamber (12).
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CN103397300A (en) * 2013-08-06 2013-11-20 中国钢研科技集团有限公司 A multifunctional experimental device and method for depositing zinc alloy coating
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