CN116213367A - High-voltage electric pulse type light metal part paint removing method and paint removing device thereof - Google Patents

High-voltage electric pulse type light metal part paint removing method and paint removing device thereof Download PDF

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Publication number
CN116213367A
CN116213367A CN202211568311.9A CN202211568311A CN116213367A CN 116213367 A CN116213367 A CN 116213367A CN 202211568311 A CN202211568311 A CN 202211568311A CN 116213367 A CN116213367 A CN 116213367A
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CN
China
Prior art keywords
light metal
paint removal
paint
electrolytic tank
type light
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202211568311.9A
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Chinese (zh)
Inventor
钱东方
张雅玲
秦浩
钱思佳
杜明阳
李振武
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hebi Weida Kexun Electric Co ltd
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Hebi Weida Kexun Electric Co ltd
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Publication date
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Priority to CN202211568311.9A priority Critical patent/CN116213367A/en
Publication of CN116213367A publication Critical patent/CN116213367A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
    • B08B3/102—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration with means for agitating the liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
    • B08B3/12—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
    • C25F1/00—Electrolytic cleaning, degreasing, pickling or descaling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

The invention belongs to the technical field of paint removal of metal surfaces, and particularly relates to a high-voltage electric pulse type light metal part paint removal method and a paint removal device thereof, which are characterized by comprising the following steps: step one: connecting a high-frequency double-pulse power supply with the electrolytic tank and the part hanger through wires; step two: uniformly and neatly hanging the light metal parts on the part hanger; step three: placing the stirrer into an electrolytic tank and connecting the stirrer with an ultrasonic device through a wire; step four: starting a circulating cooling system to control the temperature of the electrolyte to be below 50 ℃; step five: and (3) paint removal is carried out on the light metal part, and the light metal part with the paint surface removed is dried, cooled, inspected and packaged. The beneficial effects are that: the light metal parts are subjected to high-voltage electric pulse composite treatment, so that workers do not need to adopt pretreatment such as acid washing, alkali washing and physical polishing, the paint removal process is simplified, the paint removal time is saved, the paint removal efficiency is improved, and the paint removal effect is better.

Description

High-voltage electric pulse type light metal part paint removing method and paint removing device thereof
Technical Field
The invention belongs to the technical field of paint removal of metal surfaces, and particularly relates to a high-voltage electric pulse type light metal part paint removal method and a paint removal device thereof.
Background
When the surface paint of the unqualified part is treated, the treatment scheme comprises chemical acid washing, alkali washing, physical polishing and removing methods and the like, and the methods have certain effects on removing different metal paint surfaces, but chemical acid etching, alkali etching and physical polishing can damage the surface precision of the part, influence the original quality of the surface, pollute the environment and are not beneficial to the health of operators.
Disclosure of Invention
The invention aims to solve the problems and provide a high-voltage electric pulse type light metal part paint removing method and a paint removing device thereof.
The invention realizes the above purpose through the following technical scheme:
a paint removing method for high-voltage electric pulse type light metal parts is characterized by comprising the following steps:
step one: connecting a high-frequency double-pulse power supply with the electrolytic tank and the part hanger through wires;
step two: uniformly and neatly hanging the light metal parts on the part hanger;
step three: placing the stirrer into an electrolytic tank and connecting the stirrer with an ultrasonic device through a wire;
step four: starting a circulating cooling system to control the temperature of the electrolyte to be below 50 ℃;
step five: and (3) paint removal is carried out on the light metal part, and the light metal part with the paint surface removed is dried, cooled, inspected and packaged.
Preferably, the part hanger is positioned below 100mm of the bath solution of the electrolyte.
Baking the light metal parts with the paint surfaces removed,
preferably, the paint removal treatment time of the light metal part is 3-20 min.
Preferably, the electrolyte is composed of 0.3% -0.5% of potassium fluoride, 0.4% -0.6% of potassium hydroxide, 0.4% -0.6% of sodium silicate and pure water.
Preferably, the drying temperature is controlled to be about 120 ℃, and the drying time is 10-15 min.
Preferably, the cooling time is 5-7 min.
Preferably, the voltage of the high-frequency double-pulse power supply is controlled to be 400-500V, the current is controlled to be 100-500A, the frequency is controlled to be 20-2000 Hz, and the pulse width is controlled to be 50-2000 us.
Preferably, a high-voltage electric pulse type light metal part paint removing device comprises a high-frequency double-pulse power supply and an ultrasonic device, and is characterized in that: the high-frequency double-pulse power supply is respectively connected with the electrolytic tank and the part hanger arranged in the electrolytic tank through wires, a circulating cooling system is arranged on the electrolytic tank, a stirrer is arranged in the electrolytic tank on one side of the part hanger, the stirrer is connected with the ultrasonic device through wires, and a thermometer is arranged in the electrolytic tank on the other side of the part hanger.
Preferably, the circulating cooling system comprises a water pump, the water pump is connected with a water inlet arranged on one side of the electrolytic tank through a water pipe, and a water outlet is arranged on the other side of the electrolytic tank.
Preferably, the water inlet is positioned at the lower part of one side of the electrolytic tank, and the water outlet is positioned at the upper part of the other side of the electrolytic tank.
The beneficial effects are that: the light metal parts are subjected to high-voltage electric pulse composite treatment, so that workers do not need to carry out pretreatment such as acid washing, alkali washing and physical polishing, the paint removal process is simplified, the paint removal time is saved, the paint removal efficiency is improved, the paint removal effect is better, the light metal parts cannot damage the surface precision of the parts in the paint removal process, and the paint removal qualification rate is improved; the paint removal of the light metal parts can be accelerated by arranging the stirrer and the ultrasonic device, the concentration difference polarization and the temperature distribution non-uniformity of the electrolyte are reduced, and the paint removal effect of the light metal parts is better.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings that are necessary for the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
Fig. 1 is a schematic diagram of a high-voltage pulse type light metal part paint removing device according to the invention.
Fig. 2 is a flow chart of a method for stripping high-voltage pulse light metal parts according to the present invention.
The reference numerals are explained as follows:
1. a high frequency double pulse power supply; 2. an ultrasonic device; 3. an electrolytic cell; 31. a water inlet; 32. a water outlet; 4. a part hanger; 5. a thermometer; 6. a stirrer.
Detailed Description
The technical scheme of the invention is further explained below with reference to the accompanying drawings:
as shown in fig. 1-2, a paint removing method for high-voltage pulse type light metal parts is characterized by comprising the following steps:
step one: connecting a high-frequency double-pulse power supply 1 with an electrolytic tank 3 and a part hanger 4 through wires;
step two: uniformly and neatly hanging the light metal parts on the part hanging tool 4, wherein the part hanging tool 4 is positioned below 100mm of the bath solution of the electrolyte;
step three: placing the stirrer 6 into the electrolytic bath 3 and connecting with the ultrasonic device 2 by a wire;
step four: starting a circulating cooling system to control the temperature of the electrolyte to be below 50 ℃;
step five: after paint removal of the light metal part is completed, baking, cooling, checking and packaging the light metal part with the paint surface removed, wherein the baking temperature is controlled to be about 120 ℃, the baking time is 10-15 min, and the cooling time is 5-7 min.
The ultrasonic device 2 and the high-frequency double-pulse power supply 1 are respectively connected with a power supply device through wires, the voltage of the high-frequency double-pulse power supply 1 is controlled to 400V-500V, the current is controlled to 100A-500A, the frequency is controlled to 20 Hz-2000 Hz, the pulse width is controlled to 50 us-2000 us, the paint removal treatment time of the light metal parts in the electrolytic tank 3 is 3-20 min, the electrolyte consists of 0.3-0.5% of potassium fluoride, 0.4-0.6% of potassium hydroxide, 0.4-0.6% of sodium silicate and pure water, the constituent raw materials of the electrolyte are environment-friendly, and the environment is not polluted,
the utility model provides a high-voltage electric pulse type light metal part paint removal device, including high-frequency dipulse power supply 1 and ultrasonic device 2, high-frequency dipulse power supply 1 passes through the wire and is connected with the conductive box on the electrolysis trough 3, high-frequency dipulse power supply 1 passes through the wire and is connected with part hanger 4, be provided with circulation cooling system on the electrolysis trough 3, circulation cooling system includes the water pump, the water pump passes through the wire and is connected with power supply unit, the water pump passes through the raceway and is offered the water inlet 31 that is in electrolysis trough 3 one side and be connected, delivery port 32 has been offered to the opposite side of electrolysis trough 3, water inlet 31 is located the lower part of electrolysis trough 3 one side, delivery port 32 is located the upper portion of electrolysis trough 3 opposite side, placed agitator 6 in the electrolysis trough 3 of part hanger 4 one side, agitator 6 passes through the wire and is connected with ultrasonic device 2, be fixed with thermometer 5 through the fixed knot in the electrolysis trough 3 of part hanger 4 opposite side.
Working principle: uniformly hanging parts needing paint removal on a special part hanger 4 as anodes or cathodes, placing the parts on the special part hanger 4 in a well-arranged bath solution containing electrolyte below 100mm, taking stainless steel as a counter electrode, controlling the distance between the cathodes and the anodes to be 100 mm-200 mm, and carrying out paint removal treatment through constant voltage or constant current or constant power control of a power supply after the power supply is turned on, wherein the power supply is an alternating current or direct current power supply; wherein the temperature of the solution is lower than 50 ℃, the treatment time is 3-20 min, the voltage 400V-500V, the current 100A-500A and the pulse width 50 us-2000 us of the high-voltage pulse power supply are parameters, the frequency is 20 Hz-2000 Hz, the pulse width is 50 us-2000 us and the like, the parameters reach a preset value, an isolation layer is generated in a specified time, and then the aim of cleaning the surface of a part is achieved through wind cutting and water washing; baking the part with the paint surface falling off, namely, baking the part by utilizing natural gas combustion to automatically contact with the workpiece, controlling the temperature to be about 120 ℃, evaporating moisture on the surface of the workpiece, baking for 10-15 min, placing the baked workpiece in a cooling area, cooling for 5-7 min, and inspecting and packaging to finish a paint removal process.
The high-voltage electric pulse is to place aluminum, magnesium and titanium alloy parts in electrolyte in a pulse electric field environment, the surfaces of the parts are discharged due to the action of terminal voltage, an isolation layer is generated between the surfaces of the parts and the paint contact surfaces, so that the paint surfaces on the surfaces of the parts are separated, the paint removal is cleaner because the electric pulse is uniformly distributed on the surfaces of the parts, the original quality of the surfaces of the parts is kept, the high-frequency double-pulse power supply 1 provides energy for the paint removal process, the structural performance and the like of the paint surfaces are changed through adjustment of electric parameters, the electrolytic tank 3 is made of stainless steel materials and is used as a cathode in the high-voltage electric pulse paint removal process, the paint removal is accelerated by utilizing an ultrasonic stirring device, the concentration difference polarization and the non-uniformity of temperature distribution of the electrolyte are reduced, and a circulating cooling system is used, so that the temperature of the electrolyte is controlled below 50 ℃ to be favorable for paint removal, and the paint removal process is as follows: separating the electric bath solution of the part finish paint, wind cutting and water washing, baking, cooling, checking and packaging.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims.

Claims (10)

1. A paint removing method for high-voltage electric pulse type light metal parts is characterized by comprising the following steps:
step one: connecting a high-frequency double-pulse power supply (1) with the electrolytic tank (3) and the part hanger (4) through wires;
step two: uniformly and neatly hanging the light metal parts on the part hanger (4);
step three: placing a stirrer (6) into the electrolytic tank (3) and connecting with the ultrasonic device (2) through a wire;
step four: starting a circulating cooling system to control the temperature of the electrolyte to be below 50 ℃;
step five: and (3) paint removal is carried out on the light metal part, and the light metal part with the paint surface removed is dried, cooled, inspected and packaged.
2. The method for paint removal of high-voltage pulse type light metal parts according to claim 1, wherein the method comprises the following steps: the part hanger (4) is positioned below 100mm of the bath solution of the electrolyte.
3. The method for paint removal of high-voltage pulse type light metal parts according to claim 1, wherein the method comprises the following steps: the paint removal treatment time of the light metal part is 3-20 min.
4. The method for paint removal of high-voltage pulse type light metal parts according to claim 1, wherein the method comprises the following steps: the electrolyte consists of 0.3% -0.5% of potassium fluoride, 0.4% -0.6% of potassium hydroxide, 0.4% -0.6% of sodium silicate and pure water.
5. The method for paint removal of high-voltage pulse type light metal parts according to claim 1, wherein the method comprises the following steps: the drying temperature is controlled to be about 120 ℃, and the drying time is 10-15 min.
6. The method for paint removal of high-voltage pulse type light metal parts according to claim 1, wherein the method comprises the following steps: the cooling time is 5-7 min.
7. The method for paint removal of high-voltage pulse type light metal parts according to claim 1, wherein the method comprises the following steps: the voltage of the high-frequency double-pulse power supply (1) is controlled to be 400-500V, the current is controlled to be 100-500A, the frequency is controlled to be 20-2000 Hz, and the pulse width is controlled to be 50-2000 us.
8. The utility model provides a high-voltage electricity pulse type light metal part paint removal device, includes high frequency dipulse power (1) and ultrasonic device (2), its characterized in that: the high-frequency double-pulse power supply (1) is connected with an electrolytic tank (3) and a part hanger (4) arranged in the electrolytic tank (3) through wires, a circulating cooling system is arranged on the electrolytic tank (3), a stirrer (6) is arranged in the electrolytic tank (3) on one side of the part hanger (4), the stirrer (6) is connected with an ultrasonic device (2) through wires, and a thermometer (5) is arranged in the electrolytic tank (3) on the other side of the part hanger (4).
9. The high-voltage pulse type light metal part paint removing device according to claim 8, wherein: the circulating cooling system comprises a water pump, the water pump is connected with a water inlet (31) formed in one side of the electrolytic tank (3) through a water pipe, and a water outlet (32) is formed in the other side of the electrolytic tank (3).
10. The high-voltage pulse type light metal part paint removing device according to claim 9, wherein: the water inlet (31) is positioned at the lower part of one side of the electrolytic tank (3), and the water outlet (32) is positioned at the upper part of the other side of the electrolytic tank (3).
CN202211568311.9A 2022-12-08 2022-12-08 High-voltage electric pulse type light metal part paint removing method and paint removing device thereof Pending CN116213367A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211568311.9A CN116213367A (en) 2022-12-08 2022-12-08 High-voltage electric pulse type light metal part paint removing method and paint removing device thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211568311.9A CN116213367A (en) 2022-12-08 2022-12-08 High-voltage electric pulse type light metal part paint removing method and paint removing device thereof

Publications (1)

Publication Number Publication Date
CN116213367A true CN116213367A (en) 2023-06-06

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ID=86577477

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211568311.9A Pending CN116213367A (en) 2022-12-08 2022-12-08 High-voltage electric pulse type light metal part paint removing method and paint removing device thereof

Country Status (1)

Country Link
CN (1) CN116213367A (en)

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