CN113699533A - Efficient metal surface pickling process and equipment - Google Patents
Efficient metal surface pickling process and equipment Download PDFInfo
- Publication number
- CN113699533A CN113699533A CN202110993880.7A CN202110993880A CN113699533A CN 113699533 A CN113699533 A CN 113699533A CN 202110993880 A CN202110993880 A CN 202110993880A CN 113699533 A CN113699533 A CN 113699533A
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- China
- Prior art keywords
- pickling
- washing
- acid
- metal product
- passivation
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G3/00—Apparatus for cleaning or pickling metallic material
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- 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
- B08B3/02—Cleaning by the force of jets or sprays
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/48—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
- C23C22/50—Treatment of iron or alloys based thereon
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/08—Iron or steel
- C23G1/081—Iron or steel solutions containing H2SO4
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/08—Iron or steel
- C23G1/086—Iron or steel solutions containing HF
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention discloses a high-efficiency pickling process for a metal surface, which comprises the following steps: compared with the prior art, the invention greatly increases the pickling efficiency and the pickling effect, so that the surface of the metal product obtained by acid cleaning has a layer of uniform and compact passive film, the invention also discloses a high-efficiency acid cleaning device for the metal surface, which comprises a device main body, a transportation bracket, a pre-acid cleaning area, a washing area, an acid cleaning passive area, a stirring motor and a conveying mechanism, compared with the prior art, the invention adopts the mode that a plurality of stirring motors are arranged in the pre-pickling area and the pickling passivation area, and in the pickling and passivation process, the pickling solution and the pickling passivation solution are stirred, so that the concentration of reaction ions in the solution tends to be uniform, the reaction process is accelerated, the reaction uniformity is improved, and the uniformity of the pickling passivation layer on the metal surface is ensured.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of metal surfaces, in particular to a high-efficiency pickling process and high-efficiency pickling equipment for a metal surface.
[ background of the invention ]
The process of removing scale and rust from the surface of steel using an acid solution is known as pickling. Is a method for cleaning metal surfaces. Usually with a pre-film. Generally, a workpiece is immersed in an aqueous solution of sulfuric acid and the like to remove a film of oxide and the like on the surface of a metal, and the existing pickling process has low pickling efficiency and poor pickling effect, so that a high-efficiency pickling process and equipment for the surface of the metal are needed.
[ summary of the invention ]
The invention aims to solve the problems in the prior art, provides a metal surface efficient acid pickling process and equipment, has a simple structure and a reasonable design, greatly reduces the process complexity, and is good in acid pickling effect and high in acid pickling efficiency, and worthy of popularization.
In order to realize the purpose, the invention provides a high-efficiency pickling process for a metal surface, which comprises the following steps:
A) washing with water: placing the metal product in a washing tank, washing the metal product by using warm water, and washing off dust and impurities attached to the surface of the metal product;
B) surface degreasing: placing the metal product after washing in an ultrasonic washing tank, and carrying out ultrasonic washing to remove oil stains on the surface of the metal product;
C) drying: placing the metal product subjected to surface oil removal in a blow-drying machine, and blow-drying the cleaning liquid remained on the surface of the metal product;
D) pre-pickling: placing the dried metal product in an acid washing device for pre-acid washing to remove residual oxides on the surface of the metal product;
E) washing: placing the metal product subjected to pre-pickling in a washing device, and washing the pickling solution on the surface of the metal product clean by using warm water;
F) acid pickling and passivation: placing the washed metal product in an acid washing device, and passivating the surface of the metal product by using an acid washing passivation solution;
G) and (3) subsequent treatment: and (3) sequentially carrying out the processes of spraying, drying and inspecting the metal product subjected to acid cleaning passivation.
Preferably, the water temperature of the water washing in the step A) is 50-75 ℃, and the time of the water washing is 2-3 min.
Preferably, the ultrasonic cleaning time in the step B) is 15-18min, and the temperature of the ultrasonic cleaning is 65-80 ℃.
Preferably, the pickling solution for the pre-pickling in the step D) is a sulfuric acid solution, the concentration of the sulfuric acid solution is 5-15%, and the pickling time of the pre-pickling is 5-30 min.
Preferably, the passivation solution for acid-washing passivation in step F) is a mixed solution of nitric acid and hydrofluoric acid, and the time for acid-washing passivation is 5-30 min.
The utility model provides a high-efficient pickling installation of metal surface, includes equipment principal, transportation support, pickling district, flushing area, pickling passivation area, agitator motor and conveying mechanism in advance, the transportation support runs through the equipment principal, be equipped with the crossbeam on the transportation support, the bottom of crossbeam is equipped with the guide rail, be equipped with conveying mechanism on the crossbeam, inside from left to right is equipped with pickling district, flushing area and pickling passivation area in advance in proper order of equipment principal, be equipped with a plurality of agitator motor on the inner wall in pickling district and pickling passivation area in advance.
Preferably, the number of the stirring motors is 4, and stirring sheets are arranged on the output ends of the stirring motors.
Preferably, a washing pipeline is arranged above the washing area, and a plurality of washing nozzles are arranged on the washing pipeline.
Preferably, an acid mist collecting cover is arranged above the acid washing passivation area, a collecting pipeline is arranged above the acid mist collecting cover, and the collecting pipeline is connected with external acid mist treatment equipment.
Preferably, conveying mechanism includes spacing cardboard, electronic gyro wheel, telescopic cylinder, storage basket and activity door, conveying mechanism's top is equipped with spacing cardboard, spacing cardboard below is equipped with electronic gyro wheel, distance between electronic gyro wheel and the spacing cardboard just in time equals the height of crossbeam, electronic gyro wheel below is equipped with telescopic cylinder, telescopic cylinder pneumatic shaft sets up downwards, telescopic cylinder's pneumatic epaxial storage basket that is equipped with, be equipped with the activity door on the storage basket.
The invention has the beneficial effects that: compared with the prior art, the high-efficiency pickling process for the metal surface, provided by the invention, has the advantages that multiple processes of washing, surface degreasing, blow drying, pre-pickling, washing, pickling passivation, subsequent treatment and the like are organically combined together, so that the pickling efficiency and the pickling effect are greatly increased, and a uniform and compact passivation film is formed on the surface of a metal product obtained by pickling; the acid mist volatilized from the pickling passivation area is collected and transported to external treatment equipment by arranging the acid mist collecting cover and the collecting pipeline, so that the influence of the acid mist on a human body and the environment is reduced; by arranging the conveying mechanism capable of moving on the cross beam, the metal product conveying device can automatically convey metal products to pass through each process area in sequence, so that corresponding process operation is completed, time and labor are saved, working efficiency is improved, and labor amount of workers is reduced.
[ description of the drawings ]
FIG. 1 is a schematic structural diagram of a metal surface high-efficiency pickling apparatus of the present invention.
In the figure: 1-equipment main body, 2-transportation bracket, 20-beam, 21-guide rail, 3-pre-pickling area, 4-washing area, 40-washing pipeline, 41-washing nozzle, 5-pickling passivation area, 50-acid mist collection cover, 51-collection pipeline, 6-stirring motor, 60-stirring sheet, 7-conveying mechanism, 70-limit clamping plate, 71-electric roller, 72-telescopic cylinder, 73-storage basket and 74-movable bin gate.
[ detailed description ] embodiments
Referring to the attached drawings, the invention relates to a metal surface efficient acid washing process, which comprises the following steps:
A) washing with water: placing the metal product in a washing tank, washing the metal product by using warm water, and washing off dust and impurities attached to the surface of the metal product;
B) surface degreasing: placing the metal product after washing in an ultrasonic washing tank, and carrying out ultrasonic washing to remove oil stains on the surface of the metal product;
C) drying: placing the metal product subjected to surface oil removal in a blow-drying machine, and blow-drying the cleaning liquid remained on the surface of the metal product;
D) pre-pickling: placing the dried metal product in an acid washing device for pre-acid washing to remove residual oxides on the surface of the metal product;
E) washing: placing the metal product subjected to pre-pickling in a washing device, and washing the pickling solution on the surface of the metal product clean by using warm water;
F) acid pickling and passivation: placing the washed metal product in an acid washing device, and passivating the surface of the metal product by using an acid washing passivation solution;
G) and (3) subsequent treatment: and (3) sequentially carrying out the processes of spraying, drying and inspecting the metal product subjected to acid cleaning passivation.
Wherein the water temperature of the water washing in the step A) is 50-75 ℃, and the water washing time is 2-3 min.
Wherein the ultrasonic cleaning time in the step B) is 15-18min, and the ultrasonic cleaning temperature is 65-80 ℃.
Wherein, the pickling solution of the pre-pickling in the step D) is a sulfuric acid solution, the concentration of the sulfuric acid solution is 5-15%, and the pickling time of the pre-pickling is 5-30 min.
And F), the passivation solution for acid cleaning passivation is a mixed solution of nitric acid and hydrofluoric acid, and the time for acid cleaning passivation is 5-30 min.
The utility model provides a high-efficient pickling installation of metal surface, includes equipment main part 1, transportation support 2, pickling district 3 in advance, flushing zone 4, pickling passivation district 5, agitator motor 6 and conveying mechanism 7, transportation support 2 runs through equipment main part 1, be equipped with crossbeam 20 on the transportation support 2, the bottom of crossbeam 20 is equipped with guide rail 21, be equipped with conveying mechanism 7 on the crossbeam 20, 1 inside from left to right is equipped with pickling district 3 in advance, flushing zone 4 and pickling passivation district 5 in proper order, be equipped with a plurality of agitator motor 6 on the inner wall of pickling district 3 in advance and pickling passivation district 5
The number of the stirring motors 6 is 4, and stirring sheets 60 are arranged on the output ends of the stirring motors 6.
Wherein, a washing pipeline 40 is arranged above the washing area 4, and a plurality of washing nozzles 41 are arranged on the washing pipeline 40.
Wherein, acid mist collection cover 50 is arranged above acid cleaning passivation area 5, collecting pipeline 51 is arranged above acid mist collection cover 50, and collecting pipeline 51 is connected with external acid mist treatment equipment.
The conveying mechanism 7 comprises a limiting clamping plate 70, an electric roller 71, a telescopic cylinder 72, a material storage basket 73 and a movable bin gate 74, the limiting clamping plate 70 is arranged at the top of the conveying mechanism 7, the electric roller 71 is arranged below the limiting clamping plate 70, the distance between the electric roller 71 and the limiting clamping plate 70 is just equal to the height of the cross beam 20, the telescopic cylinder 72 is arranged below the electric roller 71, the telescopic cylinder 72 is arranged downwards in a pneumatic mode, the material storage basket 73 is arranged on a pneumatic shaft of the telescopic cylinder 72, and the movable bin gate 74 is arranged on the material storage basket 73.
Compared with the prior art, the high-efficiency pickling process for the metal surface, provided by the invention, has the advantages that multiple processes of washing, surface degreasing, blow drying, pre-pickling, washing, pickling passivation, subsequent treatment and the like are organically combined together, so that the pickling efficiency and the pickling effect are greatly increased, and a uniform and compact passivation film is formed on the surface of a metal product obtained by pickling; the acid mist volatilized from the pickling passivation area is collected and transported to external treatment equipment by arranging the acid mist collecting cover 50 and the collecting pipeline 51, so that the influence of the acid mist on a human body and the environment is reduced; by arranging the conveying mechanism 6 capable of moving on the cross beam 20, the metal product conveying device can automatically convey metal products to pass through each process area in sequence, corresponding process operation is completed, time and labor are saved, working efficiency is improved, and labor amount of workers is reduced.
The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.
Claims (10)
1. A high-efficiency pickling process for a metal surface is characterized by comprising the following steps: the method comprises the following steps:
A) washing with water: placing the metal product in a washing tank, washing the metal product by using warm water, and washing off dust and impurities attached to the surface of the metal product;
B) surface degreasing: placing the metal product after washing in an ultrasonic washing tank, and carrying out ultrasonic washing to remove oil stains on the surface of the metal product;
C) drying: placing the metal product subjected to surface oil removal in a blow-drying machine, and blow-drying the cleaning liquid remained on the surface of the metal product;
D) pre-pickling: placing the dried metal product in an acid washing device for pre-acid washing to remove residual oxides on the surface of the metal product;
E) washing: placing the metal product subjected to pre-pickling in a washing device, and washing the pickling solution on the surface of the metal product clean by using warm water;
F) acid pickling and passivation: placing the washed metal product in an acid washing device, and passivating the surface of the metal product by using an acid washing passivation solution;
G) and (3) subsequent treatment: and (3) sequentially carrying out the processes of spraying, drying and inspecting the metal product subjected to acid cleaning passivation.
2. The process for efficiently pickling a metal surface according to claim 1, wherein the pickling process comprises the following steps: the water temperature of the water washing in the step A) is 50-75 ℃, and the water washing time is 2-3 min.
3. The process for efficiently pickling a metal surface according to claim 1, wherein the pickling process comprises the following steps: the ultrasonic cleaning time in the step B) is 15-18min, and the ultrasonic cleaning temperature is 65-80 ℃.
4. The process for efficiently pickling a metal surface according to claim 1, wherein the pickling process comprises the following steps: the pickling solution for pre-pickling in the step D) is a sulfuric acid solution, the concentration of the sulfuric acid solution is 5-15%, and the pickling time of pre-pickling is 5-30 min.
5. The process for efficiently pickling a metal surface according to claim 1, wherein the pickling process comprises the following steps: and F) pickling and passivating the passivation solution by using a mixed solution of nitric acid and hydrofluoric acid, wherein the pickling and passivating time is 5-30 min.
6. A metal surface high-efficiency pickling device is characterized in that: including equipment main part (1), transportation support (2), pickling district (3), flushing area (4), pickling passivation area (5), agitator motor (6) and conveying mechanism (7) in advance, transportation support (2) run through equipment main part (1), be equipped with crossbeam (20) on transportation support (2), the bottom of crossbeam (20) is equipped with guide rail (21), be equipped with conveying mechanism (7) on crossbeam (20), equipment main part (1) is inside from left to right is equipped with pickling district (3), flushing area (4) and pickling passivation area (5) in advance in proper order, be equipped with a plurality of agitator motor (6) on the inner wall of pickling district (3) and pickling passivation area (5) in advance.
7. The efficient metal surface pickling apparatus of claim 6, wherein: the number of the stirring motors (6) is 4, and stirring sheets (60) are arranged on the output ends of the stirring motors (6).
8. The efficient metal surface pickling apparatus of claim 6, wherein: a washing pipeline (40) is arranged above the washing area (4), and a plurality of washing nozzles (41) are arranged on the washing pipeline (40).
9. The efficient metal surface pickling apparatus of claim 6, wherein: acid mist collection cover (50) is arranged above acid pickling passivation area (5), collection pipeline (51) is arranged above acid mist collection cover (50), and collection pipeline (51) is connected with external acid mist treatment equipment.
10. The efficient metal surface pickling apparatus of claim 6, wherein: conveying mechanism (7) are including spacing cardboard (70), electronic gyro wheel (71), telescopic cylinder (72), storage basket (73) and activity door (74), the top of conveying mechanism (7) is equipped with spacing cardboard (70), spacing cardboard (70) below is equipped with electronic gyro wheel (71), distance between electronic gyro wheel (71) and spacing cardboard (70) just in time equals the height of crossbeam (20), electronic gyro wheel (71) below is equipped with telescopic cylinder (72), telescopic cylinder (72) pneumatic shaft sets up downwards, be equipped with storage basket (73) on the pneumatic shaft of telescopic cylinder (72), be equipped with activity door (74) on storage basket (73).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110993880.7A CN113699533A (en) | 2021-08-27 | 2021-08-27 | Efficient metal surface pickling process and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110993880.7A CN113699533A (en) | 2021-08-27 | 2021-08-27 | Efficient metal surface pickling process and equipment |
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| Publication Number | Publication Date |
|---|---|
| CN113699533A true CN113699533A (en) | 2021-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110993880.7A Pending CN113699533A (en) | 2021-08-27 | 2021-08-27 | Efficient metal surface pickling process and equipment |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170016119A1 (en) * | 2014-04-03 | 2017-01-19 | Henkel Ag & Co. Kgaa | Two-stage pre-treatment of aluminum comprising pickling and passivation |
| CN207483854U (en) * | 2017-11-30 | 2018-06-12 | 宁波富技精工汽车零部件有限公司 | Acid wash passivation surface is modified the processing unit (plant) of bright panel |
| CN210796620U (en) * | 2019-07-23 | 2020-06-19 | 青岛天合源金属有限公司 | Pickling passivation system |
-
2021
- 2021-08-27 CN CN202110993880.7A patent/CN113699533A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170016119A1 (en) * | 2014-04-03 | 2017-01-19 | Henkel Ag & Co. Kgaa | Two-stage pre-treatment of aluminum comprising pickling and passivation |
| CN207483854U (en) * | 2017-11-30 | 2018-06-12 | 宁波富技精工汽车零部件有限公司 | Acid wash passivation surface is modified the processing unit (plant) of bright panel |
| CN210796620U (en) * | 2019-07-23 | 2020-06-19 | 青岛天合源金属有限公司 | Pickling passivation system |
Non-Patent Citations (1)
| Title |
|---|
| 马李洋等: ""316L不锈钢柠檬酸钝化工艺及其耐点腐蚀性能研究"" * |
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