CN112458508A - Steel plate electroplating process of Zn-Co-W alloy - Google Patents

Steel plate electroplating process of Zn-Co-W alloy Download PDF

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Publication number
CN112458508A
CN112458508A CN202011103654.9A CN202011103654A CN112458508A CN 112458508 A CN112458508 A CN 112458508A CN 202011103654 A CN202011103654 A CN 202011103654A CN 112458508 A CN112458508 A CN 112458508A
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CN
China
Prior art keywords
plate
electroplating
main body
bearing plate
steel plate
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Withdrawn
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CN202011103654.9A
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Chinese (zh)
Inventor
梁敏
陈冠群
王艳军
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Huainan Nachuang Power Engineering Co ltd
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Huainan Nachuang Power Engineering Co ltd
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Priority to CN202011103654.9A priority Critical patent/CN112458508A/en
Publication of CN112458508A publication Critical patent/CN112458508A/en
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    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D7/00—Electroplating characterised by the article coated
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
    • C25D17/06—Suspending or supporting devices for articles to be coated
    • C25D17/08—Supporting racks, i.e. not for suspending
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D21/00—Processes for servicing or operating cells for electrolytic coating
    • C25D21/10—Agitating of electrolytes; Moving of racks

Abstract

The invention belongs to the technical field of surface treatment, and particularly relates to a Zn-Co-W alloy steel plate electroplating process, which comprises the following steps: s1: pretreating a steel plate; polishing the surface of a Zn-Co-W alloy steel plate to be electroplated, cleaning and deoiling, and then carrying out electrolytic polishing treatment on the steel plate anode; s2: electroplating the steel plate; putting the Zn-Co-W alloy steel plate treated in the step S1 into an electroplating device as a cathode, and electroplating by using a direct current power supply; s3: post-treating a steel plate; after the step S2 is finished, putting the electroplated Zn-Co-W alloy steel plate into a post-treatment furnace for heat treatment, and naturally cooling to room temperature after the treatment is finished to obtain a finished product of the electroplated Zn-Co-W alloy steel plate; the invention has the advantages of low cost, simple operation, good performance of the obtained coating and more beautiful coating.

Description

Steel plate electroplating process of Zn-Co-W alloy
Technical Field
The invention belongs to the technical field of surface treatment, and particularly relates to a Zn-Co-W alloy steel plate electroplating process.
Background
With the development of society, people pursue more and more high product appearance, and tend to diversified development, the appearance of the product can directly influence market competitiveness, so that the product appearance decoration is more and more emphasized. The zinc-cobalt-tungsten alloy has excellent performance, and the surface of the alloy steel plate is electroplated, so that the performance of the steel plate and the appearance aesthetic degree of the steel plate are further improved, the aesthetic degree of a product manufactured by using the zinc-cobalt-tungsten alloy is improved, and the attraction to consumers is increased.
Some technical solutions also exist in the prior art, such as chinese patent with application number CN201910975528.3, which includes the following steps: s1, cleaning and deoiling a product to be electroplated; s2, pickling the cleaned and deoiled product to be electroplated; s3, electroplating for the first time; s4, spraying a liquid protective film on the surface of the product; s5, etching patterns on the surface of the product by laser, and etching the protective film and the electroplated layer for the first electroplating by laser; s6, carrying out secondary electroplating, wherein the process of the secondary electroplating is different from that of the primary electroplating; s7, tearing off the PET protective film to show two electroplating effects on the product; in the electroplating process is carried out to the product in this scheme, and the quality of the cladding material that the electroplating obtained on the product is not considered, bonding strength between cladding material and the product is not enough probably to appear in the cladding material that obtains, influence the life of cladding material, and simultaneously, in electroplating process, the cladding material on product surface probably has the cladding material that the combination is inseparable to lead to loose, make cladding material surface unevenness, influence the cladding material effect after the product is electroplated, and simultaneously, in the use, the cladding material begins to peel off in loose department more easily, lead to the cladding material to damage, influence the aesthetic measure of product.
Disclosure of Invention
In order to make up for the defects of the prior art, improve the quality of a plated layer after electroplating, prolong the service life of the plated layer, and simultaneously improve the effect of the plated layer obtained by electroplating to make the product beautiful, the invention provides a Zn-Co-W alloy steel plate electroplating process.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a Zn-Co-W alloy steel plate electroplating process, which comprises the following steps:
s1: pretreating a steel plate; polishing the surface of a Zn-Co-W alloy steel plate to be electroplated, cleaning and removing oil on the surface of the Zn-Co-W alloy steel plate by using an alkaline cleaning agent and an acidic cleaning agent in sequence after polishing is finished, washing the steel plate clean by using clear water after cleaning is finished, putting the steel plate serving as an anode into an electrolytic bath for anode electrolytic polishing treatment for 30-60s, taking out the Zn-Co-W alloy steel plate after the treatment is finished, and performing acid pickling activation treatment on the steel plate;
wherein, after the steel plate to be processed is cleaned, the steel plate is subjected to electrolytic polishing treatment for a short time, so that the burr defect on the surface of the steel plate can be effectively removed, the phenomenon that the plating layer is not flat at the burr position in the electroplating process to influence the bonding strength between the plating layer and the steel plate and cause the plating layer on the steel plate to fall off from the surface burr position in the subsequent use process of the steel plate to cause the failure of the plating layer on the steel plate and the accelerated peeling of the plating layer is avoided, meanwhile, in the electrolysis process, a trace of grooves caused by electrolysis appear on the surface of the steel plate, so that in the electroplating process, plating metal atoms are deposited in the grooves and form mutual staggered occlusion between the plating layer and the grooves, the bonding strength between the plating layer and the steel plate is improved, the effective service life of the plating layer is prolonged, and simultaneously, after the plating metal is embedded in the tiny grooves on the surface of the, the Van der Waals force strength between the plating layer and the steel plate is enhanced, so that the bonding strength between the plating layer and the steel plate is improved, and the possibility of the plating layer falling off after electroplating is reduced;
s2: electroplating the steel plate; putting the Zn-Co-W alloy steel plate treated in the step S1 into an electroplating device as a cathode, and electroplating by using a direct current power supply;
s3: post-treating a steel plate; after the treatment of the step S2 is finished, the electroplated Zn-Co-W alloy steel plate is placed into a post-treatment furnace, the temperature is kept at 200-220 ℃ for 1.5h, the electroplated steel is subjected to heat treatment, and the temperature is naturally reduced to room temperature after the treatment is finished, so that the finished electroplated Zn-Co-W alloy steel plate is obtained;
after the electroplated steel plate is subjected to post-treatment, and the steel plate is kept at a certain temperature for a period of time, hydrogen adsorbed in a coating on the steel plate can be effectively removed, and the internal stress of the coating can be eliminated, so that the strength of the coating and the bonding strength between the coating and the steel plate are improved, the possibility of falling off of the coating in the use process is reduced, and the effect and the quality of the electroplated steel plate are improved;
wherein the electroplating device of the step S2 comprises a main body; the main body is hollow, and electroplating liquid is filled in the main body; the main body is provided with a lifting column; the lifting columns are two in number and are symmetrically arranged at the middle position in the length direction of the main body; the opposite side surfaces of the lifting columns are provided with guide rails, and the lower ends of the guide rails are in contact with the bottom surface in the main body; the upper end of the lifting column is provided with a winding rod; a motor is arranged on the side surface of the lifting column; an output shaft of the motor is connected with the winding rod; electroplating polar plates are arranged at two ends in the main body; the electroplating polar plate is connected with the positive pole of the direct current power supply; the connecting line between the electroplating polar plates is parallel to the length direction of the main body; a bearing plate is arranged in the main body; the bearing plates are multiple in number and are uniformly distributed in the main body; an electrode contact point is arranged on the bearing plate and is connected with the negative electrode of the direct-current power supply; a steel plate to be plated is placed on the bearing plate, and the steel plate to be plated is in mutual contact with and conducted with the electrode contact point; the bearing plate is arranged on the guide rail in a sliding manner; the bearing plate is provided with a fixing column; the fixed columns are multiple in number and are respectively positioned at four corners of the bearing plate; the bearing plates are sequentially distributed in the main body from top to bottom, and the bearing plates are not contacted with each other; the lower end of the fixing column is fixedly connected with the lowest bearing plate in the main body; the bearing plates above the bearing plate positioned at the lowest position in the main body are all arranged on the fixing column and can synchronously move up and down along with the fixing column; through holes are uniformly formed in the bearing plate; the upper ends of the fixed columns are connected with pull ropes; the other end of the pull rope is fixedly connected to the winding rod; one of the two pull ropes positioned on the same side in the length direction changes the direction through the guide rod; the winding directions of the two pull ropes on the same side on the winding rod are the same;
when the electroplating device works, the motor is started, the winding rod is driven to rotate by the motor, the pull rope is wound on the winding rod, so that the fixed column is pulled upwards by the pull rope, the bearing plate 2 can synchronously move up and down along with the fixed column, therefore, the bearing plate 2 is pulled up after the pull rope 13 is wound on the winding rod 12, a worker can conveniently place a steel plate to be electroplated on the bearing plate, meanwhile, after the worker finishes placing the steel plate to be electroplated, the motor is controlled to reversely run, the bearing plate enters below the liquid level of electroplating solution in the main body, meanwhile, after the bearing plate enters the main body, a direct current power supply is switched on, the steel plate is electroplated, meanwhile, in the electroplating process, the motor intermittently runs back and forth to drive the bearing plate to move up and down in the main body in a small range, the electroplating solution in each position is stirred by the up and down movement of the bearing plate, so that the concentrations, promote the electroplating effect of steel sheet, guarantee that the cladding material thickness on the back steel sheet of electroplating is unanimous, avoid cladding material on the steel sheet to have weak department, lead to in the follow-up use, cladding material begins to drop from weak department, influences the life of cladding material.
Preferably, the fixing column comprises a guide column and an adjusting column; the number of the guide columns is equal to that of the adjusting columns; the guide columns are diagonally arranged on the bearing plate; the adjusting columns are diagonally arranged on the bearing plate; the lower ends of the guide column and the adjusting column are fixedly connected with the lowest bearing plate in the main body; the connecting line between the guide columns is vertical to the connecting line between the adjusting columns; an optical axis is arranged in the guide post; a second connecting block is slidably mounted on the optical axis; the second connecting block is fixedly connected to the bearing plate; a screw rod is rotatably arranged in the adjusting column; the upper end of the screw is positioned above the adjusting column; the screw rod is provided with a first connecting block through threads; the first connecting block is fixedly connected to the bearing plate; the screw thread on the screw rod is divided into a plurality of sections from bottom to top, and the connection part of the screw thread of each section is in smooth transition; the screw pitches of the threads of different sections on the screw are different, and the screw pitch of the threads of each section is gradually increased from bottom to top; a plurality of first connecting blocks on the screw are respectively positioned on different thread sections;
when the electroplating liquid processing device works, when the distance between the bearing plates is relatively small and the operation of workers is inconvenient, the workers can drive the connecting blocks positioned in the adjusting column to move up and down by rotating the screw rods on the adjusting column, and the connecting blocks fixedly connected with the bearing plates are all arranged on the screw rods through threads, so that when the screw rods rotate, the moving distances of the connecting blocks positioned in different thread sections on the screw rods are different, the distance between every two adjacent connecting blocks is changed, the distance between the bearing plates is changed, the operation of the workers is convenient, meanwhile, the distance between the bearing plates can be ensured to be consistent, the multiple adjustment of the workers is avoided, meanwhile, when the number of steel plates needing to be processed is small, the distance between the bearing plates can be adjusted through the screw rods, and the number of the bearing plates entering the electroplating liquid in the main body is small as much as, reduce the loss of the electroplating solution and reduce the production cost.
Preferably, a mounting plate is mounted in the through hole on the bearing plate; the mounting plate is rotatably provided with a second impeller; the impeller is integrally positioned in the through hole, and the upper end and the lower end of the impeller both exceed the upper surface and the lower surface of the bearing plate; the blade directions of the impellers II arranged in the two adjacent rows of through holes in the length direction of the main body on the bearing plate are just opposite;
when the electroplating solution stirring device works, when the bearing plate moves up and down in the main body under the action of the motor, the electroplating solution in the main body moves up and down relative to the bearing plate, meanwhile, when the electroplating solution moves relative to the bearing plate due to the through hole on the bearing plate, the electroplating solution moves through the through hole, meanwhile, due to the impeller II arranged in the through hole, the electroplating solution is stirred by the impeller II when passing through the through hole, so that the flowing of the electroplating solution is disordered, thereby improving the stirring and dispersing effects of the electroplating solution between the bearing plates, ensuring the relative consistency of the concentrations of effective components in the electroplating solution at each position, simultaneously, through the stirring of the impeller II, avoiding that the electroplating solution passing through the through hole is relatively unchanged when the bearing plate moves up and down, leading the bearing plate to have the stirring effect on the electroplating solution, and simultaneously, because the directions of the, when the electroplating solution passes through the second impellers with opposite blade directions, the disturbance directions of the electroplating solution are opposite, so that the electroplating solution passing through the adjacent through holes is collided, and the effects of electroplating solution dispersion and stirring are improved.
Preferably, a buffer column is installed on the bottom surface of the main body; the buffer columns are multiple in number and are uniformly distributed on the bottom surface of the main body; the buffer column comprises a mounting seat and an extension column; the mounting seat is fixedly connected to the bottom surface of the main body; the extension column is arranged in the mounting seat and can slide up and down in the mounting seat; a spring is arranged in the mounting seat; the spring is positioned below the extending column and pushes the extending column to extend out of the mounting seat;
the during operation, when the loading board enters into the main part, the loading board cushions through the bumping post, avoids under the unexpected circumstances, bumps between loading board and the main part, leads to electroplating device to appear damaging, simultaneously, through the effect of bumping post, load when can reducing the reciprocal operation drive loading board up-and-down motion of motor promotes the life of motor, avoids motor load too big, appears destroying, influences electroplating device's normal use.
Preferably, a liquid inlet is formed in the mounting seat in the buffer column; a one-way valve is arranged in the liquid inlet, and the electroplating liquid in the main body can only enter the mounting seat in one way; a second pipeline is arranged on the mounting seat; the second pipeline is communicated with the inner space of the mounting seat; the bearing plate is provided with a cushion block; the cushion blocks are multiple and are respectively arranged at the positions among the through holes on the bearing plate; the length direction of the cushion block is parallel to the length direction of the main body; a first water spraying hole is formed in the cushion block; the outlet of the first water spray hole is positioned on the side surface of the cushion block; the upper end of the cushion block is trapezoidal, and the outlet of the first water spray hole is positioned on the inclined plane of the trapezoid; a second communicating hole is formed in the bearing plate; the first uniform communication holes of the blowing holes are communicated with the second uniform communication holes; a first communicating hole is formed in the bearing plate; the second uniform communication holes are communicated with each other; a first pipeline is arranged on the side surface of the bearing plate; the first pipeline is communicated with the second pipeline;
when the buffer column works, the liquid inlet is arranged on the mounting seat in the buffer column, so that when the bearing plate moves upwards, the extending column moves upwards to increase the space in the mounting seat and reduce the pressure, electroplating liquid in the main body is sucked into the mounting seat through the liquid inlet, when the bearing plate moves downwards, the extending column moves downwards to reduce the space in the mounting seat and increase the pressure, the electroplating liquid in the mounting seat enters the cushion block through the pipeline and is sprayed out from the water spraying holes on the cushion block, and because the upper end of the cushion block is trapezoidal, the electroplating liquid sprayed out from the water spraying holes can be washed onto the steel plate above the cushion block, so that impurities are prevented from being deposited on the steel plate and the electroplating effect of the steel plate is prevented from being influenced, meanwhile, a plating groove with poor adhesive force on the surface of the steel plate can be washed out through the washing effect of the sprayed electroplating liquid, and the sufficient bonding strength between the plating layer on the steel plate and the steel plate is ensured, the electroplating effect of the steel plate and the service life of the coating are improved.
Preferably, the bearing plate is provided with a fixed seat; the fixed seat is rotatably provided with a soft brush; the central line of the soft brush rotating shaft is parallel to the length direction of the main body; the soft brushes are multiple and are all positioned above the through holes on the bearing plate; a first impeller is mounted on a rotating shaft of the soft brush; the impellers are multiple in number and are uniformly positioned above the through holes in the bearing plate; the soft brush can contact the surface of the steel plate placed on the cushion block;
when the electroplating device works, when the bearing plate moves up and down, the electroplating solution of the through hole on the bearing plate flows relative to the bearing plate, therefore, an impeller on the soft brush positioned above the through hole is pushed by the flowing electroplating solution, thereby driving the whole soft brush to start rotating, because the soft brush can contact the surface of the steel plate, the coating with insufficient adhesive force on the surface of the steel plate can be removed by the brush and the sweeping of the soft brush, the fatality degree of the electroplated coating on the steel plate is improved, the bonding strength between the coating and the steel plate is improved, the service life of the coating is prolonged, meanwhile, when the bearing plate moves up and down, the relative flowing directions of the electroplating solution at the through hole are different, the soft brush is driven to rotate back and forth, the removing effect of the soft brush on the coating with poor adhesive force on the steel plate is improved, thereby the electroplating effect and quality of the steel plate are improved, and, the uniformity of the effective components at all positions of the electroplating solution is improved.
Preferably, a cleaning plate is arranged on the electroplating polar plate; the cleaning plate is annular, and the electroplating polar plate is positioned in the middle of the cleaning plate; the cleaning plate can freely move on the electroplating polar plate along the vertical direction; the side surface of the cleaning plate close to the center of the main body is connected with the lowest bearing plate in the main body through magnetic force; the inner side of the cleaning plate close to the side surface of the electroplating polar plate is uniformly provided with soft bristles which can be in contact with the surface of the electroplating polar plate;
when the electroplating device works, when the bearing plate starts to move up and down under the action of the motor, because the cleaning plate is connected with the bearing plate at the lowest part in the main body by magnetic force, the cleaning plate and the bearing plate synchronously start to move up and down, because the fluff on the cleaning plate can be contacted with the electroplating polar plate, the fluff on the cleaning plate can clean the electroplating polar plate in the process of up and down movement of the cleaning plate, so that impurities in electroplating solution are prevented from being deposited on the electroplating polar plate in the electroplating process, the electroplating polar plate is prevented from working badly, the metal content of a coating in the electroplating solution is reduced, the quality and the thickness of the coating on the steel plate are influenced, the electroplating effect and the quality of the steel plate are prevented from being poor, meanwhile, the impurities adsorbed in the electroplating process on the electroplating polar plate can be effectively removed under the action of the fluff, the phenomenon of plate burning in the electroplating process is avoided, and the electroplating polar plate is, thereby reducing the production cost.
Preferably, a movable plate is mounted on the lower surface of the cleaning plate; the movable plate is arranged on the fixed plate; a cavity is formed in the fixing plate; the movable plate is positioned in the cavity and can move up and down relative to the fixed plate; the movable plate and the inner wall of the cavity are sealed; the cavity is communicated with the interior of the main body through a one-way valve, and liquid in the main body can enter the cavity in a one-way mode; a communicating hole IV is formed in the movable plate; a third communication hole is formed in the cleaning plate; the communication hole III is communicated with the communication hole IV; a second water spraying hole is formed in the side surface, close to the electroplating polar plate, of the inner side of the cleaning plate; the second water spraying hole is communicated with the third communicating hole;
when the cleaning plate moves up and down, the movable plate arranged on the lower surface of the cleaning plate moves up and down synchronously with the cleaning plate, in the process that the movable plate moves up, the space of the cavity in the fixed plate is increased, the pressure is reduced, the electroplating solution in the main body enters the cavity, in the process that the movable plate moves down, the space of the cavity in the fixed plate is reduced, the pressure is increased, the electroplating solution in the cavity enters the water spraying holes II through the communication holes III and the communication holes IV and is sprayed out of the water spraying holes II, the sprayed electroplating solution impacts the electroplating polar plate, the cleaning effect of the fuzz on the electroplating polar plate by the cleaning plate is improved, meanwhile, the sprayed electroplating solution can stir the electroplating solution near the electroplating polar plate to a certain degree, so that the diffusion of the plating layer dissolved from the electroplating polar plate in the electroplating solution is accelerated, and the uniformity and the stability of the content of effective components in, the electroplating effect of the steel plate is prevented from being influenced.
Preferably, a scraper is arranged on the upper surface of the cleaning plate; the section of the scraper is triangular, and the tip of the triangle is contacted with the surface of the electroplating polar plate; the scraping plate is arc-shaped;
during operation, can further clear away attached impurity on the electroplating polar plate through the scraper blade that sets up, clear away the attached too inseparable impurity between part and the electroplating polar plate, avoid only clearing up the electroplating polar plate through the fluff, impurity on the clean electroplating polar plate of can not complete clearance leads to impurity to influence the life of electroplating polar plate.
Preferably, the scraper has elasticity; under the elastic action of the scraper, the scraper tends to deform towards the arc center direction;
the during operation, along with the use of electroplating the polar plate, electroplating the polar plate and dissolving gradually, thickness reduces, through elastic scraper blade, can guarantee that the scraper blade is unchangeable all the time to electroplating polar plate clearance effect, avoids when electroplating the polar plate and using the later stage, and the scraper blade can not contact electroplating the polar plate, makes impurity deposition to electroplating on the polar plate for scraping of electroplating the polar plate, increase manufacturing cost.
Preferably, grid holes are uniformly formed in the electroplating polar plate; the grid holes are rectangular, and the length direction of the rectangle is parallel to the vertical plane; an air bag is arranged on the inner wall of the main body; an outlet is formed in the air bag; the air bag is positioned below the liquid level of the electroplating liquid in the main body; the air bags are multiple and are opposite to grid holes on the electroplating polar plate; when the cleaning plate moves, the cleaning plate can contact and press the air bag;
the during operation, when the cleaning plate reciprocates, periodic extrusion of cleaning plate and locking gasbag, the gasbag is when not receiving the cleaning plate extrusion, the gasbag reconversion, inhale inside the gasbag with the plating solution, afterwards, the gasbag receives the extrusion of cleaning plate, with inside plating solution blowout, because the gasbag is just to the grid hole on the electroplating polar plate, therefore, the electroplating polar plate can be passed to spun plating solution, fully stir near the plating solution of electroplating polar plate, accelerate the diffusion of the cladding material metal ion who dissolves from the electroplating polar plate, in time supply the cladding material metal that consumes in the plating solution, avoid cladding material metal ion concentration in the plating solution to hang down, lead to the cladding material quality that electroplates and obtain on the steel sheet poor, thereby influence the electroplating effect of steel sheet.
The invention has the following beneficial effects:
1. according to the Zn-Co-W alloy steel plate electroplating process, a plurality of bearing plates are arranged, a large number of steel plates to be plated can be put in at one time during electroplating, the steel plate electroplating efficiency is improved, meanwhile, the bearing plates are controlled by the motor through the pull ropes, the winding rods and the guide rods, the motor is controlled to perform periodic rotary motion during electroplating, the bearing plates can move up and down in the main body, the electroplating solution is stirred, the uniformity of effective components in the electroplating solution is guaranteed, the electroplating effect is improved, meanwhile, coatings which are not firmly adhered to the steel plates can be removed in the shaking process through up and down movement of the bearing plates, and the coating quality after the steel plates are electroplated is improved.
2. According to the Zn-Co-W alloy steel plate electroplating process, the second impeller arranged in the through hole in the bearing plate can effectively stir the electroplating solution between the bearing plates, so that the uniformity of active ingredients in the electroplating solution is improved, and the problem that the electroplating solution between the bearing plates cannot be fully mixed with the electroplating solution in other parts in the main body, so that the content of the active ingredients in the electroplating solution in the middle area of the bearing plates is reduced, and the electroplating effect of a steel plate is influenced is avoided.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a schematic structural view of an electroplating apparatus according to the present invention;
FIG. 2 is a partial cross-sectional view of an electroplating apparatus according to the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 1 at A;
FIG. 4 is an enlarged view of a portion of FIG. 1 at B;
FIG. 5 is an enlarged view of a portion of FIG. 1 at C;
FIG. 6 is an enlarged view of a portion of FIG. 1 at D;
FIG. 7 is an enlarged view of a portion of FIG. 5 at E;
FIG. 8 is an enlarged view of a portion of FIG. 5 at F;
FIG. 9 is an enlarged view of a portion of FIG. 1 at G;
FIG. 10 is a process flow diagram of the present invention;
in the figure: the device comprises a main body 1, a lifting column 11, a guide rail 111, a winding rod 12, a guide rod 121, a pull rope 13, a motor 14, a bearing plate 2, a guide column 21, an adjusting column 22, a screw rod 221, a first connecting block 222, a second connecting block 223, a soft brush 23, a fixed seat 231, a first impeller 232, a cushion block 24, a first water spraying hole 241, a communication groove 242, a first communication hole 243, a second communication hole 244, a through hole 25, a second impeller 251, a mounting plate 252, a first pipeline 26, a plating polar plate 3, an air bag 31, a grid hole 32, a cleaning plate 33, a scraper 331, a soft hair 332, a second water spraying hole 34, a third communication hole 341, a movable plate 35, a fixed plate 351, a cavity 352, a fourth 353, a buffer column 4, a second pipeline 41, a mounting.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 10, the plating process of a Zn-Co-W alloy steel sheet according to the present invention includes the steps of:
s1: pretreating a steel plate; polishing the surface of a Zn-Co-W alloy steel plate to be electroplated, cleaning and removing oil on the surface of the Zn-Co-W alloy steel plate by using an alkaline cleaning agent and an acidic cleaning agent in sequence after polishing is finished, washing the steel plate clean by using clear water after cleaning is finished, putting the steel plate serving as an anode into an electrolytic bath for anode electrolytic polishing treatment for 30-60s, taking out the Zn-Co-W alloy steel plate after the treatment is finished, and performing acid pickling activation treatment on the steel plate;
wherein, after the steel plate to be processed is cleaned, the steel plate is subjected to electrolytic polishing treatment for a short time, so that the burr defect on the surface of the steel plate can be effectively removed, the phenomenon that the plating layer is not flat at the burr position in the electroplating process to influence the bonding strength between the plating layer and the steel plate and cause the plating layer on the steel plate to fall off from the surface burr position in the subsequent use process of the steel plate to cause the failure of the plating layer on the steel plate and the accelerated peeling of the plating layer is avoided, meanwhile, in the electrolysis process, a trace of grooves caused by electrolysis appear on the surface of the steel plate, so that in the electroplating process, plating metal atoms are deposited in the grooves and form mutual staggered occlusion between the plating layer and the grooves, the bonding strength between the plating layer and the steel plate is improved, the effective service life of the plating layer is prolonged, and simultaneously, after the plating metal is embedded in the tiny grooves on the surface of the, the Van der Waals force strength between the plating layer and the steel plate is enhanced, so that the bonding strength between the plating layer and the steel plate is improved, and the possibility of the plating layer falling off after electroplating is reduced;
s2: electroplating the steel plate; putting the Zn-Co-W alloy steel plate treated in the step S1 into an electroplating device as a cathode, and electroplating by using a direct current power supply;
s3: post-treating a steel plate; after the treatment of the step S2 is finished, the electroplated Zn-Co-W alloy steel plate is placed into a post-treatment furnace, the temperature is kept at 200-220 ℃ for 1.5h, the electroplated steel is subjected to heat treatment, and the temperature is naturally reduced to room temperature after the treatment is finished, so that the finished electroplated Zn-Co-W alloy steel plate is obtained;
after the electroplated steel plate is subjected to post-treatment, and the steel plate is kept at a certain temperature for a period of time, hydrogen adsorbed in a coating on the steel plate can be effectively removed, and the internal stress of the coating can be eliminated, so that the strength of the coating and the bonding strength between the coating and the steel plate are improved, the possibility of falling off of the coating in the use process is reduced, and the effect and the quality of the electroplated steel plate are improved;
wherein, the electroplating device of the step S2 comprises a main body 1; the main body 1 is hollow inside and filled with electroplating solution; a lifting column 11 is arranged on the main body 1; the lifting columns 11 are two in number and symmetrically arranged at the middle position in the length direction of the main body 1; the opposite side surfaces of the lifting column 11 are provided with guide rails 111, and the lower ends of the guide rails 111 are in contact with the bottom surface in the main body 1; the upper end of the lifting column 11 is provided with a winding rod 12; a motor 14 is arranged on the side surface of the lifting column 11; the output shaft of the motor 14 is connected with the winding rod 12; two ends in the main body 1 are provided with electroplating polar plates 3; the electroplating polar plate 3 is connected with the positive pole of a direct current power supply; the connecting line between the electroplating polar plates 3 is parallel to the length direction of the main body 1; a bearing plate 2 is arranged in the main body 1; the bearing plates 2 are multiple in number and are uniformly distributed in the main body; an electrode contact point is arranged on the bearing plate 2 and is connected with the negative electrode of the direct-current power supply; a steel plate to be plated is placed on the bearing plate 2, and the steel plate to be plated is in contact with and conducted with the electrode contact point; the bearing plate 2 is slidably mounted on the guide rail 111; the bearing plate 2 is provided with a fixing column; the fixed columns are multiple in number and are respectively positioned at four corners of the bearing plate 2; the bearing plates 2 are sequentially distributed in the main body 1 from top to bottom, and the bearing plates 2 are not contacted with each other; the lower end of the fixing column is fixedly connected with the lowest bearing plate 2 in the main body 1; the bearing plate 2 positioned above the bearing plate 2 at the lowest position in the main body 1 is arranged on the fixed column and can synchronously move up and down along with the fixed column; through holes 25 are uniformly formed in the bearing plate 2; the upper ends of the fixed columns are connected with pull ropes 13; the other end of the pull rope 13 is fixedly connected to the winding rod 12; one of the two pull ropes 13 located on the same side in the longitudinal direction is changed in direction by the guide rod 121; the winding directions of the two pull ropes 13 on the same side on the winding rod 12 are the same;
when the electroplating device works, the motor 14 is started, the winding rod 12 is driven to rotate by the motor 14, the pull rope 13 is wound on the winding rod 12, so that the fixed column is pulled upwards by the pull rope 13, the bearing plate 2 can synchronously move up and down along with the fixed column, therefore, the bearing plate 2 is pulled up after the pull rope 13 is wound on the winding rod 12, a worker can conveniently place a steel plate to be electroplated on the bearing plate 2, meanwhile, after the worker finishes placing the steel plate to be electroplated, the motor 14 is controlled to reversely operate, the bearing plate 2 enters below the liquid level of the electroplating solution in the main body 1, meanwhile, after the bearing plate 2 enters the main body 1, a direct current power supply is switched on to start electroplating the steel plate, meanwhile, in the electroplating process, the motor 14 intermittently operates in a reciprocating mode to drive the bearing plate 2 to move up and down in the main body 1 in a small amplitude, the electroplating solution in the main body 1 is stirred through the up, make the plating solution active ingredient concentration everywhere unanimous, promote the electroplating effect of steel sheet, guarantee to electroplate that cladding material thickness on the back steel sheet is unanimous, avoid cladding material on the steel sheet to have weak department, lead to in the follow-up use, cladding material begins to drop from weak department, influences the life of cladding material.
As an embodiment of the present invention, the fixing column includes a guiding column 21 and an adjusting column 22; the number of the guide columns 21 is equal to that of the adjusting columns 22; the guide posts 21 are diagonally mounted on the bearing plate 2; the adjusting columns 22 are diagonally arranged on the bearing plate 2; the lower ends of the guide column 21 and the adjusting column 22 are fixedly connected with the lowest bearing plate 2 in the main body 1; the connecting line between the guide posts 21 is vertical to the connecting line between the adjusting posts 22; an optical axis is arranged in the guide post 21; a second connecting block 223 is slidably mounted on the optical axis; the second connecting block 223 is fixedly connected to the bearing plate 2; a screw rod 221 is rotatably arranged in the adjusting column 22; the upper end of the screw rod 221 is positioned above the adjusting column 22; a first connecting block 222 is arranged on the screw rod 221 through threads; the first connecting block 222 is fixedly connected to the bearing plate 2; the screw thread on the screw rod 221 is divided into a plurality of sections from bottom to top, and the connection part of the screw thread of each section is in smooth transition; the thread pitches of the threads of different sections on the screw 221 are different, and the thread pitch of the threads of each section is gradually increased from bottom to top; a plurality of first connecting blocks 222 on the screw 221 are respectively positioned on different thread sections;
when the electroplating device works, when the distance between the bearing plates 2 is relatively small and the operation of a worker is inconvenient, the worker can drive the first connecting blocks 222 positioned in the adjusting column 22 to move up and down by rotating the screw rod 221 on the adjusting column 22 through the screw rod 221, and the first connecting blocks 222 fixedly connected with the bearing plates 2 are all installed on the screw rod 221 through threads, so that when the screw rod 221 rotates, the moving distances of the first connecting blocks 222 positioned on different thread sections on the screw rod 221 are different, the distance between every two adjacent first connecting blocks 222 is changed, the distance between the bearing plates 2 is changed, the operation of the worker is convenient, meanwhile, the distance between the bearing plates 2 can be ensured to be consistent, the multiple adjustment of the worker is avoided, meanwhile, when the number of steel plates to be processed is small, the distance between the bearing plates 2 can be adjusted through the screw rod 221, the number of the bearing plates 2 entering the electroplating solution in the main body 1 is, reduce the loss of the electroplating solution and reduce the production cost.
As an embodiment of the present invention, a mounting plate 252 is installed in the through hole 25 of the bearing plate 2; a second impeller 251 is rotatably arranged on the mounting plate 252; the impeller is integrally positioned in the through hole 25, and the upper end and the lower end of the impeller both exceed the upper surface and the lower surface of the bearing plate 2; the blade directions of the impellers 251 arranged in the two adjacent rows of through holes 25 vertical to the length direction of the main body 1 on the bearing plate 2 are just opposite;
when the electroplating device works, when the bearing plate 2 moves up and down in the main body 1 under the action of the motor 14, the electroplating solution in the main body 1 moves up and down relative to the bearing plate 2, meanwhile, when the electroplating solution moves relative to the bearing plate 2 due to the through hole 25 existing on the bearing plate 2, the electroplating solution moves through the through hole 25, meanwhile, because the impeller II 251 is installed in the through hole 25, the electroplating solution is stirred by the impeller II 251 when passing through the through hole 25, so that the flowing of the electroplating solution is disordered, the stirring and dispersing effects of the electroplating solution between the bearing plates 2 are improved, the relative consistency of the concentrations of effective components in the electroplating solution at each position is ensured, meanwhile, when the bearing plate 2 moves up and down, the electroplating solution passing through the through hole 25 is relatively unchanged, so that the stirring effect of the bearing plate 2 on the electroplating solution is achieved, because the vane directions of the impeller two 251 in the adjacent through holes 25 in the length direction are opposite, when the plating solution passes through the impeller two 251 with the vane directions being opposite, the disturbance directions of the plating solution are opposite, so that the plating solution passing through the adjacent through holes 25 is collided, and the plating solution dispersion and stirring effects are improved.
As an embodiment of the present invention, a cushion column 4 is installed on the bottom surface of the main body 1; the buffer columns 4 are multiple in number and are uniformly distributed on the bottom surface of the main body 1; the buffer column 4 comprises a mounting seat 42 and a protruding column 43; the mounting seat 42 is fixedly connected to the bottom surface of the main body 1; the extending column 43 is installed in the installation seat 42, and the extending column 43 can slide up and down in the installation seat 42; a spring 44 is arranged in the mounting seat 42; the spring 44 is positioned below the extending column 43 and pushes the extending column 43 to extend out of the mounting seat 42;
the during operation, when the loading board 2 entered into main part 1 in, loading board 2 cushions through buffering post 4, avoids under the unexpected condition, bumps between loading board 2 and the main part 1, leads to electroplating device to appear damaging, simultaneously, through the effect of buffering post 4, can reduce the load when motor 14 reciprocates the drive loading board 2 up-and-down motion, promotes motor 14's life, avoids motor 14 load too big, the damage appears, influences electroplating device's normal use.
As an embodiment of the present invention, a liquid inlet is disposed on the mounting seat 42 in the buffer column 4; a one-way valve is arranged in the liquid inlet, and electroplating liquid in the main body 1 can only enter the mounting seat 42 in one way; a second pipeline 41 is installed on the installation seat 42; the second pipeline 41 is communicated with the inner space of the mounting seat 42; a cushion block 24 is arranged on the bearing plate 2; a plurality of communicating grooves 242 are uniformly formed in the cushion block 24; the plating liquid can pass over the pad 24 from the communication groove 242; the cushion blocks 24 are arranged at positions among the through holes 25 on the bearing plate 2; the length direction of the cushion block 24 is parallel to the length direction of the main body 1; a first water spraying hole 241 is formed in the cushion block 24; the outlet of the first water spray hole 241 is positioned on the side surface of the cushion block 24; the upper end of the cushion block 24 is trapezoidal, and the outlet of the first water spray hole 241 is positioned on the inclined plane of the trapezoid; a second communication hole 244 is formed in the bearing plate 2; the first uniform communication hole 244 of the blowing hole is communicated; a first communication hole 243 is formed in the bearing plate 2; the second communication hole 244 is communicated with the first communication hole 243 uniformly; a first pipeline 26 is arranged on the side surface of the bearing plate 2; the first pipeline 26 is communicated with the second pipeline 41;
when the electroplating device works, the liquid inlet is arranged on the mounting seat 42 in the buffer column 4, so that when the bearing plate 2 moves upwards, the extending column 43 moves upwards to increase the space in the mounting seat 42 and reduce the pressure, electroplating liquid in the main body 1 is sucked into the mounting seat 42 through the liquid inlet, when the bearing plate 2 moves downwards, the extending column 43 moves downwards to reduce the space in the mounting seat 42 and increase the pressure, the electroplating liquid in the mounting seat 42 enters the cushion block 24 through a pipeline and is sprayed out from the first water spraying holes 241 on the cushion block 24, because the upper end of the cushion block 24 is trapezoidal, the electroplating liquid sprayed out from the first water spraying holes 241 can be washed on a steel plate above the cushion block 24, the deposition of impurities on the steel plate is avoided, the electroplating effect of the steel plate is influenced, meanwhile, a plating groove with poor adhesive force on the surface of the steel plate can be washed down through the washing effect of the sprayed electroplating liquid, guarantee to have sufficient bonding strength between cladding material on the steel sheet and the steel sheet, promote the steel sheet and electroplate the life of effect and cladding material.
As an embodiment of the present invention, a fixing seat 231 is installed on the bearing plate 2; the fixed seat 231 is rotatably provided with a soft brush 23; the central line of the rotating shaft of the soft brush 23 is parallel to the length direction of the main body 1; the soft brushes 23 are a plurality of and are all positioned above the through holes 25 on the bearing plate 2; a first impeller 232 is arranged on a rotating shaft of the soft brush 23; the first impellers 232 are multiple and are uniformly positioned above the through holes 25 on the bearing plate 2; the soft brush 23 can contact the surface of the steel plate placed on the pad block 24;
when the electroplating device works, when the bearing plate 2 moves up and down, the electroplating solution in the through hole 25 of the bearing plate 2 flows relative to the bearing plate 2, therefore, the impeller I232 on the soft brush 23 positioned above the through hole 25 is pushed by the flowing electroplating solution, thereby driving the soft brush 23 to integrally start rotating, because the soft brush 23 can contact the surface of the steel plate, the coating with insufficient adhesive force on the surface of the steel plate can be removed by brushing and sweeping the soft brush 23, the fatality of the electroplated coating on the steel plate is improved, the bonding strength between the coating and the steel plate is improved, the service life of the coating is prolonged, meanwhile, when the bearing plate 2 moves up and down, the relative flowing directions of the electroplating solution in the through hole 25 are different, the soft brush 23 is driven to rotate back and forth, the removing effect of the soft brush 23 on the coating with poor adhesive force on the steel plate is improved, thereby, in the process of the rotation of the soft brush 23, the soft brush 23 can stir the electroplating solution, and the uniformity of the effective components at each position of the electroplating solution is improved.
As an embodiment of the present invention, a cleaning plate 33 is mounted on the electroplating polar plate 3; the cleaning plate 33 is annular, and the electroplating polar plate 3 is positioned in the middle of the cleaning plate 33; the cleaning plate 33 can freely move on the electroplating polar plate 3 along the vertical direction; the side surface of the cleaning plate 33 close to the center of the main body 1 is connected with the lowest bearing plate 2 in the main body 1 through magnetic force; the inner side of the cleaning plate 33 close to the side surface of the electroplating polar plate 3 is uniformly provided with soft bristles 332, and the soft bristles 332 can be in contact with the surface of the electroplating polar plate 3;
in operation, when the loading plate 2 starts to move up and down under the action of the motor 14, because the cleaning plate 33 is magnetically connected with the loading plate 2 at the lowest position in the main body 1, the cleaning plate 33 and the loading plate 2 start to move up and down synchronously, because the bristles 332 on the cleaning plate 33 can be contacted with the electroplating polar plate 3, in the process of the up and down movement of the cleaning plate 33, the bristles on the cleaning plate 33 can clean the electroplating polar plate 3, so that impurities in the electroplating solution are prevented from being deposited on the electroplating polar plate 3 in the electroplating process, the electroplating polar plate 3 can not work well, the metal content of the plating layer in the electroplating solution is reduced, the quality and the thickness of the plating layer on the steel plate are influenced, the electroplating effect and the quality of the steel plate are not good, meanwhile, the impurities adsorbed in the electroplating process on the electroplating polar plate 3 can be effectively removed through the action of the bristles 332, and the phenomenon of plate burning in the electroplating process is avoided, resulting in scrapping of the electroplated pole plate 3, thereby reducing the production cost
As an embodiment of the present invention, a movable plate 35 is mounted on the lower surface of the cleaning plate 33; the movable plate 35 is mounted on the fixed plate 351; a cavity 352 is formed in the fixing plate 351; the movable plate 35 is located in the cavity 352, and the movable plate 35 can move up and down relative to the fixed plate 351; the movable plate 35 keeps a seal with the inner wall of the cavity 352; the cavity 352 is communicated with the interior of the main body 1 through a one-way valve, and liquid in the main body 1 can enter the cavity 352 in a one-way mode; a communicating hole four 353 is formed in the movable plate 35; a third communication hole is formed in the cleaning plate 33; the communication hole III 341 and the communication hole IV 353 are communicated with each other; a second water spraying hole 34 is formed in the side surface, close to the electroplating polar plate 3, of the inner side of the cleaning plate 33; the second water spraying hole 34 is communicated with the third communication hole 341;
in operation, when the cleaning plate 33 moves up and down, the movable plate 35 mounted on the lower surface of the cleaning plate 33 moves up and down synchronously with the cleaning plate 33, during the upward movement of the movable plate 35, the space of the cavity 352 in the fixed plate 351 increases, the pressure decreases, the plating solution in the main body 1 enters the cavity 352, during the downward movement of the movable plate 35, the space of the cavity 352 in the fixed plate 351 decreases, the pressure increases, the plating solution in the cavity 352 enters the second water spray holes 34 through the third communication holes 341 and the fourth communication holes 353, and is sprayed out of the second water spray holes 34, the sprayed plating solution impacts the plating plate 3, the cleaning effect of the bristles on the plating plate 3 by the cleaning plate 33 is improved, meanwhile, the sprayed plating solution can stir the plating solution near the plating plate 3 to a certain degree, thereby accelerating the diffusion of the base metal plating layer dissolved from the plating plate 3 in the plating solution, the uniformity and stability of the content of the effective components in the electroplating solution are maintained, and the electroplating effect of the steel plate is prevented from being influenced.
As an embodiment of the present invention, a scraper 331 is installed on the upper surface of the cleaning plate 33; the section of the scraper 331 is triangular, and the tip of the triangle is in contact with the surface of the electroplating polar plate 3; the scraping plate 331 is arc-shaped;
during operation, can further clear away through the scraper blade 331 that sets up and electroplate adnexed impurity on the polar plate 3, clear away the attached too inseparable impurity between part and the electroplating polar plate 3, avoid only clearing up electroplating polar plate 3 through the fluff, impurity on can not the complete clean up electroplating polar plate 3 leads to impurity to influence electroplating polar plate 3's life.
As an embodiment of the present invention, the scraper 331 has elasticity; under the elastic action of the scraper blade 331, the scraper blade 331 has a tendency of deforming towards the arc center direction;
the during operation, along with electroplating polar plate 3's use, electroplating polar plate 3 dissolves gradually, and thickness reduces, through elastic scraper blade 331, can guarantee that scraper blade 331 is unchangeable all the time to electroplating polar plate 3 clearance effect, avoids when electroplating polar plate 3 uses the later stage, and scraper blade 331 can not contact electroplating polar plate 3, makes impurity deposit to electroplating polar plate 3 on for electroplating polar plate 3 scrap, increase manufacturing cost.
As an embodiment of the present invention, grid holes 32 are uniformly formed on the electroplating polar plate 3; the grid holes 32 are rectangular, and the length direction of the rectangle is parallel to a vertical plane; an air bag 31 is arranged on the inner wall of the main body 1; an outlet is formed in the air bag 31; the airbag 31 is positioned below the liquid level of the plating liquid in the main body 1; the air bags 31 are multiple in number and are opposite to the grid holes 32 on the electroplating polar plate 3; when the cleaning plate 33 moves, the air bag 31 can be contacted and pressed;
in operation, when clearance board 33 reciprocates, clearance board 33 periodic extrusion and locking gasbag 31, gasbag 31 is when not being extrudeed by clearance board 33, gasbag 31 reconversion, inhale the inside gasbag 31 with the plating solution, afterwards, gasbag 31 receives the extrusion of clearance board 33, with inside plating solution blowout, because gasbag 31 is just to the grid hole 32 on the electroplate polar plate 3, consequently, the spun plating solution can pass electroplate polar plate 3, the near plating solution of electroplate polar plate 3 is fully stirred, accelerate the diffusion of the cladding layer metal ion who dissolves from electroplate polar plate 3, in time supply the cladding layer metal that consumes in the plating solution, avoid cladding layer metal ion concentration in the plating solution to hang down, lead to the cladding layer quality that electroplates on the steel sheet and obtain poor, thereby influence the electroplating effect of steel sheet.
The specific working process is as follows:
when the electroplating device works, the motor 14 is started, the winding rod 12 is driven to rotate by the motor 14, the pull rope 13 is wound on the winding rod 12, so that the fixed column is pulled upwards by the pull rope 13, the bearing plate 2 is pulled after the bearing plate 2 is wound on the winding rod 12 along with the fixed column, a worker places a steel plate to be electroplated on the bearing plate 2, meanwhile, after the worker places the steel plate to be electroplated, the motor 14 is controlled to run reversely, the bearing plate 2 enters the position below the liquid level of electroplating liquid in the main body 1, and meanwhile, after the bearing plate 2 enters the main body 1, the direct-current power supply is switched on to start electroplating the steel plate; the staff rotates the screw rod 221 on the adjusting column 22, and drives the first connecting block 222 in the adjusting column 22 to move up and down through the screw rod 221, so as to change the distance between the bearing plates 2; when the bearing plate 2 moves up and down in the main body 1 under the action of the motor 14, the plating solution in the main body 1 moves up and down relative to the bearing plate 2, meanwhile, due to the through hole 25 of the bearing plate 2, the plating solution moves through the through hole 25 when the plating solution and the bearing plate 2 move relatively, and meanwhile, due to the impeller II 251 arranged in the through hole 25, the plating solution is stirred by the impeller II 251 when the plating solution passes through the through hole 25; because the liquid inlet is arranged on the mounting seat 42 in the buffer column 4, when the bearing plate 2 moves upwards, the extending column 43 moves upwards to increase the space in the mounting seat 42 and reduce the pressure, electroplating solution in the main body 1 is sucked into the mounting seat 42 through the liquid inlet, when the bearing plate 2 moves downwards, the extending column 43 moves downwards to reduce the space in the mounting seat 42 and increase the pressure, the electroplating solution in the mounting seat 42 enters the cushion block 24 through a pipeline and is sprayed out from the first water spraying hole 241 on the cushion block 24, and the sprayed electroplating solution can be washed on a steel plate above the cushion block 24; when the bearing plate 2 moves up and down, the electroplating solution in the through hole 25 of the bearing plate 2 flows relative to the bearing plate 2, so that the first impeller 232 on the soft brush 23 above the through hole 25 is pushed by the flowing electroplating solution, the soft brush 23 is driven to integrally start to rotate, and the plating layer with insufficient adhesive force on the surface of the steel plate is removed through the soft brush 23; when the bearing plate 2 starts to move up and down under the action of the motor 14, the cleaning plate 33 and the bearing plate 2 at the lowest position in the main body 1 synchronously start to move up and down because the magnetic connection exists between the cleaning plate 33 and the bearing plate 2, and the bristles on the cleaning plate 33 can be contacted with the electroplating pole plate 3, so that the bristles on the cleaning plate 33 can clean the electroplating pole plate 3 in the process of moving up and down of the cleaning plate 33; when the cleaning plate 33 moves up and down, the movable plate 35 mounted on the lower surface of the cleaning plate 33 moves up and down synchronously with the cleaning plate 33, in the process that the movable plate 35 moves up, the space of the cavity 352 in the fixed plate 351 is increased, the pressure is reduced, the electroplating solution in the main body 1 enters the cavity 352, in the process that the movable plate 35 moves down, the space of the cavity 352 in the fixed plate 351 is reduced, the pressure is increased, the electroplating solution in the cavity 352 enters the second water spray holes 34 through the third communication holes 341 and the fourth communication holes 353 and is sprayed out of the second water spray holes 34, and the sprayed electroplating solution impacts the electroplating pole plate 3; the scraper 331 is arranged to contact with the electroplating polar plate 3 and remove impurities attached to the electroplating polar plate 3; when the cleaning plate 33 moves up and down, the cleaning plate 33 is periodically pressed and the anti-loosening air bag 31, when the air bag 31 is not pressed by the cleaning plate 33, the air bag 31 is recovered, the electroplating solution is sucked into the air bag 31, then the air bag 31 is pressed by the cleaning plate 33, the internal electroplating solution is sprayed out, and the sprayed electroplating solution can penetrate through the electroplating pole plate 3 to stir the electroplating solution near the electroplating pole plate 3.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (11)

1. A Zn-Co-W alloy steel plate electroplating process is characterized by comprising the following steps: the electroplating process comprises the following steps:
s1: pretreating a steel plate; polishing the surface of a Zn-Co-W alloy steel plate to be electroplated, cleaning and removing oil on the surface of the Zn-Co-W alloy steel plate by using an alkaline cleaning agent and an acidic cleaning agent in sequence after polishing is finished, washing the steel plate clean by using clear water after cleaning is finished, putting the steel plate serving as an anode into an electrolytic bath for anode electrolytic polishing treatment for 30-60s, taking out the Zn-Co-W alloy steel plate after the treatment is finished, and performing acid pickling activation treatment on the steel plate;
s2: electroplating the steel plate; putting the Zn-Co-W alloy steel plate treated in the step S1 into an electroplating device as a cathode, and electroplating by using a direct current power supply;
s3: post-treating a steel plate; after the treatment of the step S2 is finished, the electroplated Zn-Co-W alloy steel plate is placed into a post-treatment furnace, the temperature is kept at 200-220 ℃ for 1.5h, the electroplated steel is subjected to heat treatment, and the temperature is naturally reduced to room temperature after the treatment is finished, so that the finished electroplated Zn-Co-W alloy steel plate is obtained;
wherein, the electroplating device of the step S2 comprises a main body (1); the main body (1) is hollow, and is filled with electroplating solution; a lifting column (11) is arranged on the main body (1); the two lifting columns (11) are symmetrically arranged at the middle position in the length direction of the main body (1); the opposite side surfaces of the lifting column (11) are provided with guide rails (111), and the lower ends of the guide rails (111) are in contact with the bottom surface in the main body (1); the upper end of the lifting column (11) is provided with a winding rod (12); a motor (14) is arranged on the side surface of the lifting column (11); the output shaft of the motor (14) is connected with the winding rod (12); electroplating polar plates (3) are arranged at two ends in the main body (1); the electroplating polar plate (3) is connected with the positive electrode of the direct-current power supply; the connecting line between the electroplating polar plates (3) is parallel to the length direction of the main body (1); a bearing plate (2) is arranged in the main body (1); the bearing plates (2) are multiple in total and are uniformly distributed in the main body; an electrode contact point is arranged on the bearing plate (2), and the electrode contact point is connected with the negative electrode of the direct-current power supply; a steel plate to be plated is placed on the bearing plate (2), and the steel plate to be plated is in contact with and conducted with the electrode contact point; the bearing plate (2) is arranged on the guide rail (111) in a sliding manner; a fixing column is arranged on the bearing plate (2); the fixed columns are multiple in number and are respectively positioned at four corners of the bearing plate (2); the bearing plates (2) are sequentially distributed in the main body (1) from top to bottom, and the bearing plates (2) are not in contact with each other; the lower end of the fixing column is fixedly connected with the lowest bearing plate (2) in the main body (1); the bearing plate (2) above the bearing plate (2) at the lowest position in the main body (1) is arranged on the fixed column and can synchronously move up and down along with the fixed column; through holes (25) are uniformly formed in the bearing plate (2); the upper ends of the fixed columns are connected with pull ropes (13); the other end of the pull rope (13) is fixedly connected to the winding rod (12); one of the two pull ropes (13) positioned on the same side in the length direction changes the direction through the guide rod (121); the two pull ropes (13) on the same side have the same winding direction on the winding rod (12).
2. The plating process of a steel sheet of Zn-Co-W alloy according to claim 1, characterized in that: the fixed column comprises a guide column (21) and an adjusting column (22); the number of the guide columns (21) is equal to that of the adjusting columns (22); the guide columns (21) are diagonally arranged on the bearing plate (2); the adjusting columns (22) are diagonally arranged on the bearing plate (2); the lower ends of the guide column (21) and the adjusting column (22) are fixedly connected with the lowest bearing plate (2) in the main body (1); the connecting line between the guide columns (21) is vertical to the connecting line between the adjusting columns (22); an optical axis is arranged in the guide column (21); a second connecting block (223) is slidably mounted on the optical axis; the second connecting block (223) is fixedly connected to the bearing plate (2); a screw rod (221) is rotatably arranged in the adjusting column (22); the upper end of the screw rod (221) is positioned above the adjusting column (22); a first connecting block (222) is arranged on the screw rod (221) through threads; the first connecting block (222) is fixedly connected to the bearing plate (2); the screw thread on the screw rod (221) is divided into a plurality of sections from bottom to top, and the connection part of the screw thread of each section is in smooth transition; the screw pitches of the threads of different sections on the screw (221) are different, and the screw pitch of the threads of each section is gradually increased from bottom to top; a plurality of first connecting blocks (222) on the screw rod (221) are respectively positioned on different thread sections.
3. The plating process of a steel sheet of Zn-Co-W alloy according to claim 1, characterized in that: a mounting plate (252) is arranged in the through hole (25) on the bearing plate (2); a second impeller (251) is rotatably arranged on the mounting plate (252); the impeller is integrally positioned in the through hole (25), and the upper end and the lower end of the impeller both exceed the upper surface and the lower surface of the bearing plate (2); the blade directions of the impellers II (251) arranged in the two adjacent rows of through holes (25) on the bearing plate (2) in the length direction of the main body (1) are just opposite.
4. The plating process of a steel sheet of Zn-Co-W alloy according to claim 1, characterized in that: a buffer column (4) is arranged on the bottom surface of the main body (1); the buffer columns (4) are multiple in number and are uniformly distributed on the bottom surface of the main body (1); the buffer column (4) comprises a mounting seat (42) and an extension column (43); the mounting seat (42) is fixedly connected to the bottom surface of the main body (1); the extending column (43) is installed in the installation seat (42), and the extending column (43) can slide up and down in the installation seat (42); a spring (44) is arranged in the mounting seat (42); the spring (44) is positioned below the extending column (43) and pushes the extending column (43) to extend out of the mounting seat (42).
5. A Zn-Co-W alloy steel sheet plating process according to claim 4, characterized in that: a liquid inlet is formed in the mounting seat (42) in the buffer column (4); a one-way valve is arranged in the liquid inlet, and electroplating liquid in the main body (1) can only enter the mounting seat (42) in one way; a second pipeline (41) is installed on the installation seat (42); the second pipeline (41) is communicated with the inner space of the mounting seat (42); a cushion block (24) is arranged on the bearing plate (2); a plurality of communicating grooves (242) are uniformly formed in the cushion block (24); the plating solution can pass through the cushion block (24) from the communication groove (242); the cushion blocks (24) are arranged at positions among the through holes (25) on the bearing plate (2) respectively; the length direction of the cushion block (24) is parallel to the length direction of the main body (1); a first water spraying hole (241) is formed in the cushion block (24); the outlet of the first water spray hole (241) is positioned on the side surface of the cushion block (24); the upper end of the cushion block (24) is trapezoidal, and the outlet of the first water spray hole (241) is positioned on the inclined plane of the trapezoid; a second communication hole (244) is formed in the bearing plate (2); the first uniform communication hole (244) of the blowing hole is communicated; a first communicating hole (243) is formed in the bearing plate (2); the second communication holes (244) are communicated with the first communication holes (243); a first pipeline (26) is arranged on the side surface of the bearing plate (2); the first pipeline (26) is communicated with the second pipeline (41).
6. A Zn-Co-W alloy steel sheet plating process according to claim 5, characterized in that: a fixed seat (231) is arranged on the bearing plate (2); the fixed seat (231) is rotatably provided with a soft brush (23); the central line of the rotating shaft of the soft brush (23) is parallel to the length direction of the main body (1); the soft brushes (23) are a plurality and are all positioned above the through holes (25) on the bearing plate (2); a first impeller (232) is arranged on a rotating shaft of the soft brush (23); the impellers (232) are multiple and are uniformly positioned above the through holes (25) in the bearing plate (2); the soft brush (23) can contact the surface of the steel plate placed on the pad (24).
7. The plating process of a steel sheet of Zn-Co-W alloy according to claim 1, characterized in that: a cleaning plate (33) is arranged on the electroplating polar plate (3); the cleaning plate (33) is annular, and the electroplating polar plate (3) is positioned in the middle of the cleaning plate (33); the cleaning plate (33) can freely move on the electroplating polar plate (3) along the vertical direction; the side surface of the cleaning plate (33) close to the center of the main body (1) is connected with the lowest bearing plate (2) in the main body (1) through magnetic force; the inner side of the cleaning plate (33) close to the side surface of the electroplating polar plate (3) is uniformly provided with the soft hair (332), and the soft hair (332) can be in surface contact with the electroplating polar plate (3).
8. The plating process of a steel sheet of Zn-Co-W alloy according to claim 7, characterized in that: a movable plate (35) is arranged on the lower surface of the cleaning plate (33); the movable plate (35) is mounted on the fixed plate (351); a cavity (352) is formed in the fixing plate (351); the movable plate (35) is positioned in the cavity (352), and the movable plate (35) can move up and down relative to the fixed plate (351); the movable plate (35) keeps sealing with the inner wall of the cavity (352); the cavity (352) is communicated with the inside of the main body (1) through a one-way valve, and liquid in the main body (1) can enter the cavity (352) in a one-way mode; a communicating hole IV (353) is formed in the movable plate (35); a third communication hole is formed in the cleaning plate (33); the communication hole III (341) and the communication hole IV (353) are communicated with each other; a second water spraying hole (34) is formed in the side surface, close to the electroplating polar plate (3), of the inner side of the cleaning plate (33); the second water spraying hole (34) is communicated with the third communication hole (341).
9. The plating process of a steel sheet of Zn-Co-W alloy according to claim 8, characterized in that: a scraper (331) is arranged on the upper surface of the cleaning plate (33); the section of the scraper (331) is triangular, and the tip of the triangle is contacted with the surface of the electroplating polar plate (3); the scraper (331) is arc-shaped.
10. The process of electroplating a steel sheet of Zn-Co-W alloy according to claim 9, wherein: the scraper (331) is elastic; under the elastic action of the scraper (331), the scraper (331) has a tendency of deforming towards the arc center direction.
11. The plating process of a steel sheet of Zn-Co-W alloy according to claim 7, characterized in that: grid holes (32) are uniformly formed in the electroplating polar plate (3); the grid holes (32) are rectangular, and the length direction of the rectangle is parallel to a vertical plane; an air bag (31) is arranged on the inner wall of the main body (1); an outlet is formed in the air bag (31); the air bag (31) is positioned below the liquid level of the electroplating liquid in the main body (1); the air bags (31) are multiple and are opposite to the grid holes (32) on the electroplating polar plate (3); the cleaning plate (33) can contact and press the air bag (31) when moving.
CN202011103654.9A 2020-10-15 2020-10-15 Steel plate electroplating process of Zn-Co-W alloy Withdrawn CN112458508A (en)

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CN202011103654.9A CN112458508A (en) 2020-10-15 2020-10-15 Steel plate electroplating process of Zn-Co-W alloy

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113416999A (en) * 2021-06-24 2021-09-21 创隆实业(深圳)有限公司 Multi-angle uniform electroplating equipment
CN114000175A (en) * 2021-10-09 2022-02-01 中国华能集团清洁能源技术研究院有限公司 Nickel-iron alloy hydrogen evolution electrode and preparation method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113416999A (en) * 2021-06-24 2021-09-21 创隆实业(深圳)有限公司 Multi-angle uniform electroplating equipment
CN114000175A (en) * 2021-10-09 2022-02-01 中国华能集团清洁能源技术研究院有限公司 Nickel-iron alloy hydrogen evolution electrode and preparation method thereof
CN114000175B (en) * 2021-10-09 2023-10-03 中国华能集团清洁能源技术研究院有限公司 Nickel-iron alloy hydrogen evolution electrode and preparation method thereof

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Application publication date: 20210309