CN115505917A - Tin plate chromium-free passivation device and process - Google Patents
Tin plate chromium-free passivation device and process Download PDFInfo
- Publication number
- CN115505917A CN115505917A CN202110699924.5A CN202110699924A CN115505917A CN 115505917 A CN115505917 A CN 115505917A CN 202110699924 A CN202110699924 A CN 202110699924A CN 115505917 A CN115505917 A CN 115505917A
- Authority
- CN
- China
- Prior art keywords
- chromium
- free passivation
- solution
- tank
- nozzle
- 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
Links
- 238000002161 passivation Methods 0.000 title claims abstract description 154
- 239000005028 tinplate Substances 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title claims description 18
- 230000008569 process Effects 0.000 title claims description 12
- 239000000243 solution Substances 0.000 claims abstract description 116
- 239000007788 liquid Substances 0.000 claims abstract description 44
- 238000002360 preparation method Methods 0.000 claims abstract description 23
- 238000002347 injection Methods 0.000 claims abstract description 18
- 239000007924 injection Substances 0.000 claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 claims abstract description 16
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000011550 stock solution Substances 0.000 claims abstract description 12
- 238000000926 separation method Methods 0.000 claims abstract description 8
- 239000007921 spray Substances 0.000 claims description 32
- 238000005507 spraying Methods 0.000 claims description 29
- 239000008367 deionised water Substances 0.000 claims description 5
- 229910021641 deionized water Inorganic materials 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 238000010791 quenching Methods 0.000 claims description 3
- 230000000171 quenching effect Effects 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims 6
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims 1
- 229910052804 chromium Inorganic materials 0.000 claims 1
- 239000011651 chromium Substances 0.000 claims 1
- 239000000443 aerosol Substances 0.000 abstract description 9
- 239000011248 coating agent Substances 0.000 abstract description 4
- 238000000576 coating method Methods 0.000 abstract description 4
- 238000013461 design Methods 0.000 abstract description 3
- 235000015073 liquid stocks Nutrition 0.000 abstract 2
- 238000005516 engineering process Methods 0.000 description 8
- 238000009826 distribution Methods 0.000 description 5
- 230000006872 improvement Effects 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- JHWIEAWILPSRMU-UHFFFAOYSA-N 2-methyl-3-pyrimidin-4-ylpropanoic acid Chemical compound OC(=O)C(C)CC1=CC=NC=N1 JHWIEAWILPSRMU-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- LDMRLRNXHLPZJN-UHFFFAOYSA-N 3-propoxypropan-1-ol Chemical compound CCCOCCCO LDMRLRNXHLPZJN-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001978 electrochemical passivation Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 231100000989 no adverse effect Toxicity 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- YOYLLRBMGQRFTN-SMCOLXIQSA-N norbuprenorphine Chemical compound C([C@@H](NCC1)[C@]23CC[C@]4([C@H](C3)C(C)(O)C(C)(C)C)OC)C3=CC=C(O)C5=C3[C@@]21[C@H]4O5 YOYLLRBMGQRFTN-SMCOLXIQSA-N 0.000 description 1
- 230000000050 nutritive effect Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 229910000162 sodium phosphate Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 150000003606 tin compounds Chemical class 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
-
- 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
- C23C22/58—Treatment of other metallic material
-
- 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
- C23C22/73—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 characterised by the process
- C23C22/76—Applying the liquid by spraying
-
- 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
- C23C22/73—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 characterised by the process
- C23C22/77—Controlling or regulating of the coating process
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
The invention relates to a tin plate chromium-free passivation device, which comprises a chromium-free passivation liquid stock solution tank, a solution preparation tank, a working tank, a solution receiving tank, a gas-liquid separation tank, a metering pump, a diaphragm pump, a first filter, a second filter, a nozzle, an aerosol injection system and a wringing roller, wherein the chromium-free passivation liquid stock solution is stored in the stock solution tank, the stock solution tank is connected with the solution preparation tank through the metering pump, the solution preparation tank is connected with the working tank through the first filter and the diaphragm pump, the working tank is connected with the aerosol injection system through the second filter, the gas-liquid separation tank is connected with the solution receiving tank through a pipeline, and the solution receiving tank is connected with the working tank through a pipeline; the production method has the advantages of realizing stable production of the chromium-free passivated tin plate, realizing the production of tin plates with various specifications by the aid of the whole scheme, along with ingenious design, compact structure, convenience and safety in use, ensuring the coating uniformity of the chromium-free passivating solution on the surface of the tin plate and realizing green manufacturing of the tin plate.
Description
Technical Field
The invention relates to a passivation device, in particular to a chromium-free passivation device for a tin plate, and belongs to the technical field of tin plate production in the metallurgical industry.
Background
With the daily improvement of living standard of people, the application range and the dosage of the cold-rolled electroplated tin steel plate are increasing day by day, and the product has the advantages of firmness, attractive appearance, good formability and the like. The tin coating can provide beautiful metal luster, and the tin compound is non-toxic and harmless, and has no adverse effect on the color, nutritive value and human health of food contents. At present, the production of tin plates at home and abroad adopts a chromate passivation process, and the passivation process adopts sodium dichromate solution to carry out electrolytic passivation on a tin layer on the surface of the tin plate. Since sodium dichromate is a highly toxic medium, a large amount of investment is required for ensuring safe production and subsequent waste liquid treatment, and meanwhile, the application range of chromate passivation products for food assurance is becoming narrower and narrower, as specified by RoHS of European Union, the market of European Union completely prohibits chromate passivation of a tin plate by 2017, and promotes the use of chromium-free passivation products, although the instruction is executed temporarily at present, the large direction of chromium-free passivation of the tin plate cannot be changed.
In order to promote the development of the chromium-free passivation technology, researchers at home and abroad promote a great deal of research force, and some achievements are obtained. Currently, there are two major systems of chromium-free passivation: electrolytic type chromium-free passivation and spray type chromium-free passivation. The electrolytic chromium-free passivation is typically represented by the technology of Nissin iron company in Japan, which is actually a phosphate anodic treatment technology, and the tin plate is electrolyzed in a sodium phosphate solution with the concentration of about 30g/L at the temperature of 50 ℃ and the pH value of 2.5, and the anti-yellowing and anti-pollution performances of the tin plate can be greatly improved by adopting the passivation method, so that the corrosion resistance of the tin plate can be met, but the adhesive force of paint on the surface of the tin plate is relatively poor, and the tin plate is not used in countries except Japan. The spray type chromium-free passivation system is characterized in that a chromium-free passivation solution is uniformly sprayed on the surface of a tin plate to form a passivation film, and passivation solutions can be divided into organic passivation solution and inorganic passivation solution according to different passivation mechanisms. The passivation solution is mainly composed of propoxypropanol, hexafluorotitanic acid, phosphoric acid, inorganic acid and the like, and the passivation film obtained by the passivation solution can meet the requirements of corrosion resistance and adhesive force of the tin plate as long as the spraying process is proper, so the passivation solution is widely applied internationally. Therefore, the spray coating chromium-free passivation system is the mainstream technology for the chromium-free passivation of the tin plate at present.
The key technology of the spray coating chromium-free passivation method is to uniformly spray the passivation solution on the surface of the tin plate according to the requirements of different tin plates, and therefore, how to ensure the control of the spray coating amount and the uniformity of the spray coating are the core requirements of the spray coating device. CN211057225U discloses a chromium-free passivation apparatus, which uses a rotary spraying technique to spray diluted chromium-free passivation solution on the surface of the plate, and this technique is the current main stream equipment for chromium-free passivation. The main problem of spraying the chromium-free passivation solution by adopting the rotary spraying method is the spraying uniformity, the rotary spraying technology is widely applied and is mainly applied to the surface spraying of food, paper making and textiles, and the uniform distribution of the chromium-free passivation solution on the surface of a plate is difficult to ensure when the liquid drop granularity generated by the rotary spraying is large. In order to ensure the uniformity of the chromium-free passivation solution on the surface of the plate, a subsequent group of wringing rollers are required to be utilized to evenly extrude the passivation solution with uneven surface of the plate, and the consumption of the passivation solution is increased. Aiming at the current situation of the chromium-free passivation of the tin plate, the invention of chromium-free passivation equipment and a chromium-free passivation process is urgently needed, and the chromium-free passivation equipment and the chromium-free passivation process have important significance for improving the green manufacturing technology of the tin plate and the quality of the tin plate.
Disclosure of Invention
The technical scheme provides the chromium-free passivation device and the process of the environment-friendly chromium-free passivation solution, realizes stable production of the chromium-free passivation tin plate, has the advantages of ingenious design, compact structure and convenient and safe use, can realize production of tin plates with various specifications, ensures the coating uniformity of the chromium-free passivation solution on the surface of the tin plate, and realizes green manufacturing of the tin plate.
In order to achieve the purpose, the technical scheme includes that the tin plate chromium-free passivation device comprises a chromium-free passivation liquid raw liquid tank, a liquid distribution tank, a working tank, a liquid receiving tank, a gas-liquid separation tank, a metering pump, a diaphragm pump, a first filter, a second filter, a nozzle, an aerosol injection system and a squeezing roller, the chromium-free passivation liquid raw liquid is stored in the raw liquid tank, the raw liquid tank is connected with the liquid distribution tank through the metering pump, the liquid distribution tank is connected with the working tank through the first filter and the diaphragm pump, the working tank is connected with the aerosol injection system through the second filter, the gas-liquid separation tank is connected with the liquid receiving tank through a pipeline, and the liquid receiving tank is connected with the working tank through a pipeline.
As an improvement of the invention, the inlet of the aerosol injection system is connected with the working tank, the chromium-free passivation solution is mixed with compressed air in the nozzles, the compressed air atomizes the chromium-free passivation solution and then the chromium-free passivation solution is injected to the front and the back of the tin plate through two groups of nozzles, in order to ensure the working state of each nozzle, a flow meter is arranged in front of the nozzle, and whether the nozzle is blocked or not is monitored through the flow meter.
As an improvement of the invention, the SPRAY sprayed by the nozzle is in a fan shape, the angle of the fan shape is 45 degrees, 60 degrees or 90 degrees, preferably 60 degrees, and most preferably a SUJE420-65-SS type nozzle of SPRAY company;
as a modification of the present invention, the nozzle is provided with a plurality of nozzles on one surface thereof according to the width of the tin plate, and the distance L between two adjacent nozzles is related to the fan angle a (°) of the nozzles, and L = (2.5 to 4.5) a mm;
in an improvement of the invention, the distance L1= 200-250 mm between the atomizing nozzle and the spray tin plate, a baffle plate with a narrow slit is arranged between the nozzle and the tin plate, the distance L2= 150-200 mm between the baffle plate and the nozzle, and the height of the narrow slit on the baffle plate is H = (0.2-0.35) × L2.
As an improvement of the invention, the spray nozzle is externally provided with a spray system shell with air draft, an upper air outlet pipeline of the spray system shell is connected with an air draft system of a tinning unit, so that atomized chromium-free passivation solution can be prevented from leaking, an air draft opening is provided with a gas-liquid separator, the separated chromium-free passivation solution flows back into a liquid receiving tank, and the chromium-free passivation solution in the liquid receiving tank flows back into a working tank after being checked to be qualified.
The chromium-free passivation device is controlled by a PLC (programmable logic controller), and the chromium-free passivation device completes the configuration of the chromium-free passivation solution before receiving the instruction of the tinning unit, detects the parameters of all detection elements in the system, and is in a standby state after completing the work. After the PLC receives the injection instruction, the system PLC calculates the air flow of the injection system and the flow of the chromium-free passivation solution according to the instructions of the speed, the width, the thickness and the like of the tin plate sent by the tin plating unit, then starts the injection operation, the chromium-free passivation solution in the solution preparation tank is automatically added into the working tank through the diaphragm pump until the production stopping instruction is received, and then the injection operation is completed;
a chromium-free passivation process of an environment-friendly chromium-free passivation solution comprises the following specific steps:
1) In order to realize chromium-free passivation of the tin plate, the used chromium-free passivation solution is a titanate system, the tin plate is subjected to reflow, quenching and drying, the chromium-free passivation solution is uniformly sprayed on the surface of the tin plate, and then a layer of uniform chromium-free passivation film is formed on the surface of the tin plate after the tin plate is dried at a high temperature of 100-120 ℃, wherein the preferred chromium-free passivation solution is Granodine 1456 of Germany Hangao company;
2) The preparation method of the chromium-free passivation solution comprises the steps of pumping the chromium-free passivation solution stock solution into a preparation solution tank from a chromium-free passivation solution stock solution tank by adopting a metering pump according to different concentration requirements, adding deionized water in the preparation solution into the preparation solution tank through a flowmeter, and stirring the prepared chromium-free passivation solution for 5-10 minutes;
3) According to the requirements of different tin plates on the thickness of the chromium-free passivation film, the concentration of the prepared chromium-free passivation solution is 5-15%, the temperature of the chromium-free passivation solution is 30-50 ℃, the total flow of the chromium-free passivation solution is 5-10L/min, the gas flow is 50-200 NL/min, and the pressure of compressed air is 0.3-0.6 MPa;
4) The SPRAY method is adopted, the compressed air and the chromium-free passivation solution are atomized in the nozzle and sprayed in a fan shape, the flow rates of the gas and the liquid are adjusted by an electronic valve in the nozzle, and the SPRAY system is preferably an automatic 1550+ type modular SPRAY system of SPRAY company;
5) The aerosol sprayed by the nozzle is in a fan shape, the fan angle is 45 degrees, 60 degrees or 90 degrees, preferably 60 degrees, and the SUJE420-65-SS nozzle of SPRAY company is preferred;
6) The distance L1= 200-250 mm between the nozzle and the tin plate, a baffle plate with a narrow slit is arranged between the nozzle and the tin plate, the distance L2= 150-200 mm between the baffle plate and the nozzle, and the height of the narrow slit on the baffle plate is H = (0.2-0.35) L2;
7) According to the width of a tin plate of a unit of 700-1050 mm, a plurality of nozzles are arranged on one surface, the distance between two adjacent nozzles is related to the fan-shaped angle A (°) of the nozzles, and L = (2.5-4.5) A mm;
8) The outside of a nozzle of the chromium-free passivation device is provided with a closed shell with air draft, an air outlet pipeline on the shell is connected with a unit air draft system, and the negative pressure in the closed shell is kept at-500-1000 Pa;
9) The whole spraying device is controlled by a PLC (programmable logic controller), the configuration of the chromium-free passivation solution is completed before an instruction of a tinning unit is received, parameters of all detection elements in the system are detected, the system is in a standby state after the work is completed, after the PLC receives the spraying instruction, the system PLC calculates the air flow of the spraying system and the flow of the chromium-free passivation solution after the PLC receives the instruction of the speed, the width, the thickness and the like of a tinning plate sent by the tinning unit, the spraying operation is started, the chromium-free passivation solution in the solution preparation tank is automatically added into the working tank through a diaphragm pump until a production stopping instruction is received, and the spraying operation is completed.
Compared with the prior art, the invention has the advantages that 1) the technical scheme has compact, ingenious, convenient and safe integral structure design; 2) The technical scheme can realize uniform coating of the chromium-free passivation solution, and the thickness of the chromium-free passivation film can be 0.5-5 mg/m 2 The corrosion resistance, the sulfur resistance and the adhesive force performance of the tin plate obtained by the process technology can meet the requirements of the tin plate for food packaging; 3) The chromium-free passivation device fully considers the uniformity of the sprayed passivation solution and the consumption of the passivation solution, can realize full-automatic operation under the control of a PLC, and meets the production requirements of green tin plates.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of a nozzle configuration;
FIG. 3 is a schematic view of a baffle structure;
in the figure: 1. the device comprises a raw liquid tank, 2, a metering pump, 3, a liquid preparation tank, 4, a first filter, 5, a diaphragm pump, 6, a liquid receiving tank, 7, a gas-liquid separation tank, 8, a flowmeter, 9, a nozzle, 10, a squeezing roller, 11, a working tank, 12, a second filter, 13, an aerosol injection system, 14 and an injection system shell.
The specific implementation mode is as follows:
for the purpose of promoting an understanding of the present invention, reference will now be made in detail to the present embodiments of the invention, examples of which are illustrated in the accompanying drawings.
Example 1: referring to fig. 1-3, an apparatus for chromium-free passivation of an environmentally friendly chromium-free passivation solution, the apparatus comprising: the chromium-free passivation solution is stored in the raw liquid tank 1, the raw liquid tank 1 is connected with the liquid distribution tank 3 through the metering pump 2, the liquid distribution tank 3 is connected with the working tank 11 through the first filter 4 and the diaphragm pump 5, the working tank 11 is connected with the aerosol injection system 13 through the second filter 12, the gas-liquid separation tank 7 is connected with the liquid collection tank 6 through a pipeline, and the liquid collection tank 6 is connected with the working tank 11 through a pipeline; the chromium-free passivation solution in the stock solution tank 1 is transmitted into the solution preparation tank 3 through the metering pump 2, a certain amount of deionized water is added into the solution preparation tank 3 according to the required concentration, and the chromium-free passivation stock solution and the deionized water are uniformly stirred in the solution preparation tank 3; the inlet of the aerial fog spraying system 13 is connected with the working tank 11, the chromium-free passivation solution is mixed with compressed air in the nozzles 9, the compressed air atomizes the chromium-free passivation solution and then sprays the chromium-free passivation solution to the front and back surfaces of the tin plate through the two groups of nozzles 9, in order to ensure the working state of each nozzle 9, a flow meter 8 is arranged in front of each nozzle 9, and whether the nozzle 9 is blocked or not is monitored through the flow meter 8; the SPRAY sprayed by the nozzle 9 is fan-shaped, the included angle of the fan-shaped SPRAY is 45 degrees, 60 degrees and 90 degrees, preferably 60 degrees, and the SUJE420-65-SS type nozzle of SPRAY company is preferred; according to the width of the tin plate, a plurality of nozzles can be arranged on one surface, the distance between two adjacent nozzles is related to the fan-shaped angle A (°) of the nozzles, and L = (2.5-4.5) A mm; the distance L1 between the atomizing nozzle 9 and the spray tin plate is 200-250 mm, a baffle plate with a narrow slit is arranged between the nozzle and the tin plate, the distance L2 between the baffle plate and the nozzle is 150-200 mm, and the height of the narrow slit on the baffle plate is H = (0.2-0.35) = L2; the tin plate sprayed with the chromium-free passivation solution passes through a group of wringing rollers 10 to ensure that a chromium-free passivation solution liquid film is uniform and flat; the spray nozzle 9 is externally provided with a spray system shell 14 with air draft, an upper air outlet pipeline of the spray system shell 14 is connected with an air draft system of the tinning unit, atomized chromium-free passivation solution can be prevented from leaking, an air draft opening is provided with a gas-liquid separator, the separated chromium-free passivation solution flows back into the liquid receiving tank 6, and the chromium-free passivation solution in the liquid receiving tank flows back into the working tank 11 after being qualified through inspection.
Example 2: referring to fig. 1-3, a chromium-free passivation process of an environment-friendly chromium-free passivation solution is specifically as follows;
1) In order to realize chromium-free passivation of the tin plate, the used chromium-free passivation solution is a titanate system, the tin plate is subjected to reflow, quenching and drying, the chromium-free passivation solution is uniformly sprayed on the surface of the tin plate, and then a layer of uniform chromium-free passivation film is formed on the surface of the tin plate after the tin plate is dried at a high temperature of 100-120 ℃, wherein the preferred chromium-free passivation solution is Granodine 1456 of Germany Hangao company;
2) The preparation method of the chromium-free passivation solution comprises the steps of pumping the chromium-free passivation solution stock solution into a preparation solution tank from a chromium-free passivation solution stock solution tank by adopting a metering pump according to different concentration requirements, adding deionized water in the preparation solution into the preparation solution tank through a flowmeter, and stirring the prepared chromium-free passivation solution for 5-10 minutes;
3) According to the requirements of different tin plates on the thickness of the chromium-free passivation film, the concentration of the prepared chromium-free passivation solution is 5-15%, the temperature of the chromium-free passivation solution is 30-50 ℃, the total flow of the chromium-free passivation solution is 5-10L/min, the gas flow is 50-200 NL/min, and the pressure of compressed air is 0.3-0.6 MPa;
4) The SPRAY method is adopted, the compressed air and the chromium-free passivation solution are atomized in the nozzle and sprayed in a fan shape, the flow rates of the gas and the liquid are adjusted by an electronic valve in the nozzle, and the SPRAY system is preferably an automatic 1550+ type modular SPRAY system of SPRAY company;
5) The sprayed aerosol is in a fan shape, the included angle of the fan shape can be 45 degrees, 60 degrees and 90 degrees, preferably 60 degrees, and a SUJE420-65-SS nozzle of SPRAY company is preferred;
6) The distance L1= 200-250 mm between the atomizing nozzle and the tin plate, a baffle plate with a narrow slit for a ribbon is arranged between the nozzle and the tin plate, the distance L2= 150-200 mm between the baffle plate and the nozzle, and the height of the narrow slit on the baffle plate is H = (0.2-0.35) L2;
7) According to the width of a tin plate of a unit of 700-1050 mm, a plurality of nozzles can be arranged on one surface, the distance between two adjacent nozzles is related to the fan-shaped angle A (°) of the nozzles, and L = (2.5-4.5) A mm;
8) The outside of a nozzle of the chromium-free passivation device is provided with a closed shell with air draft, an air outlet pipeline on the shell is connected with an air draft system of the unit, and the negative pressure in the closed shell is kept at-500-1000 Pa;
9) The whole spraying device is controlled by a PLC (programmable logic controller), the configuration of the chromium-free passivation solution is completed before the instruction of the tinning unit is received, the parameters of all detection elements in the system are detected, and the spraying device is in a standby state after the operation is completed. After the PLC receives the injection instruction, the system PLC calculates the air flow of the injection system and the flow of the chromium-free passivation solution according to the instructions of the speed, the width, the thickness and the like of the tin plate sent by the tin plating unit, then starts the injection operation, the chromium-free passivation solution in the solution preparation tank is automatically added into the working tank through the diaphragm pump until the production stopping instruction is received, and then the injection operation is completed;
the structure of the nozzle is shown in figure 2, the structure of the baffle is shown in figure 3, the spraying angle of the nozzle can be selected from 45 degrees, 60 degrees and 90 degrees, the distance between two adjacent nozzles is 2.5-4.5 times of the spraying angle, the distance L1 between the nozzle and the tin plate is continuously adjustable within the range of 200-250 mm, a baffle with a narrow slit is arranged between the nozzle and the tin plate, the distance L2 between the baffle and the nozzle is continuously adjustable within the range of 150-200 mm, and the height H of the narrow slit on the baffle is 0.2-0.35 times of the distance L2 between the baffle and the nozzle;
it should be noted that the above-mentioned embodiments are not intended to limit the scope of the present invention, and all equivalent modifications and substitutions based on the above-mentioned technical solutions are within the scope of the present invention as defined in the claims.
Claims (7)
1. The utility model provides a tinplate does not have chromium passivating device, its characterized in that, passivating device includes chromium-free passivation solution stoste jar, joins in marriage the fluid reservoir, work the groove, connects the fluid reservoir, gas-liquid separation jar, measuring pump, diaphragm pump, filter one and filter two, nozzle, aerial fog injection system and wringing roller, chromium-free passivation solution stoste is stored in the stoste jar, and the stoste jar is connected through the measuring pump and is joined in marriage the fluid reservoir, joins in marriage the fluid reservoir and passes through filter one and diaphragm pump connection work groove, and the work groove passes through filter two and connects aerial fog injection system, and the gas-liquid separation jar passes through pipe connection and connects the fluid reservoir, it passes through pipe connection work groove to connect the fluid reservoir.
2. The tin plate chromium-free passivation device according to claim 1, wherein an inlet of the gas spray system is connected with the working tank, the chromium-free passivation solution is mixed with compressed air in the nozzle, the compressed air atomizes the chromium-free passivation solution and then sprays the chromium-free passivation solution to the front and the back of the tin plate through two groups of nozzles, a flow meter is arranged in front of the nozzles, and whether the nozzles are blocked or not is monitored through the flow meter.
3. The tin-plate chromium-free passivation apparatus according to claim 2, wherein the spray from the nozzle is fan-shaped with a fan angle of 45 °,60 ° or 90 °.
4. The chrome-free passivation apparatus for tin plate according to claim 3, wherein the nozzles are arranged on one surface of the tin plate according to the width of the tin plate, and the distance L between two adjacent nozzles is related to the fan angle A (°) of the nozzles, and L = (2.5-4.5) A mm.
5. The tinplate chromium-free passivation device of claim 4, wherein the distance between the atomizing nozzle and the spray tinplate is L1= 200-250 mm, a baffle with a narrow slit is arranged between the nozzle and the tinplate, the distance between the baffle and the nozzle is L2= 150-200 mm, and the height of the narrow slit on the baffle is H = (0.2-0.35) × L2.
6. The tin plate chromium-free passivation device according to claim 5, characterized in that a jet system shell with air draft is installed outside the nozzle, an upper air outlet pipeline of the jet system shell is connected with an air draft system of a tinning unit, an air draft opening is provided with a gas-liquid separator, the separated chromium-free passivation solution flows back into the liquid receiving tank, and the chromium-free passivation solution in the liquid receiving tank flows back into the working tank after passing inspection.
7. The chromium-free passivation process of the environment-friendly chromium-free passivation solution by adopting the device of any one of claims 1-6 is characterized by comprising the following steps:
1) In order to realize the chromium-free passivation of the tin plate, the used chromium-free passivation solution is a titanate system, the tin plate is subjected to reflow, quenching and drying, the chromium-free passivation solution is uniformly sprayed on the surface of the tin plate, then the tin plate is dried at a high temperature of between 100 and 120 ℃ to form a layer of uniform chromium-free passivation film on the surface of the tin plate,
2) The preparation method of the chromium-free passivation solution comprises the steps of pumping the chromium-free passivation solution stock solution into a preparation solution tank from a chromium-free passivation solution stock solution tank by adopting a metering pump according to different concentration requirements, adding deionized water in the preparation solution into the preparation solution tank through a flowmeter, and stirring the prepared chromium-free passivation solution for 5-10 minutes;
3) According to the requirements of different tin plates on the thickness of the chromium-free passivation film, the concentration of the prepared chromium-free passivation solution is 5-15%, the temperature of the chromium-free passivation solution is 30-50 ℃, the total flow rate of the chromium-free passivation solution is 5-10L/min, the gas flow rate is 50-200 NL/min, and the pressure of compressed air is 0.3-0.6 MPa;
4) Adopts an aerial fog spraying mode, the compressed air and the chromium-free passivation solution are atomized in the nozzle and sprayed out in a fan shape, the flow rates of the gas and the liquid are adjusted by an electronic valve in the nozzle,
5) The aerial fog sprayed by the nozzle is in a fan shape, the fan-shaped angle is 45 degrees, 60 degrees or 90 degrees,
6) The distance L1= 200-250 mm between the nozzle and the tin plate, a baffle plate with a narrow slit is arranged between the nozzle and the tin plate, the distance L2= 150-200 mm between the baffle plate and the nozzle, and the height of the narrow slit on the baffle plate is H = (0.2-0.35) L2;
7) According to the width of a tin plate of a unit of 700-1050 mm, a plurality of nozzles are arranged on one surface, the distance between two adjacent nozzles is related to the fan-shaped angle A (°) of the nozzles, and L = (2.5-4.5) A mm;
8) The outside of a nozzle of the chromium-free passivation device is provided with a closed shell with air draft, an air outlet pipeline on the shell is connected with an air draft system of the unit, and the negative pressure in the closed shell is kept at-500-1000 Pa;
9) The whole spraying device is controlled by a PLC (programmable logic controller), the configuration of the chromium-free passivation solution is completed before an instruction of a tinning unit is received, parameters of all detection elements in the system are detected, the system is in a standby state after the work is completed, after the PLC receives the spraying instruction, the system PLC calculates the air flow of the spraying system and the flow of the chromium-free passivation solution after the PLC receives the instruction of the speed, the width, the thickness and the like of a tinning plate sent by the tinning unit, the spraying operation is started, the chromium-free passivation solution in the solution preparation tank is automatically added into the working tank through a diaphragm pump until a production stopping instruction is received, and the spraying operation is completed.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110699924.5A CN115505917A (en) | 2021-06-23 | 2021-06-23 | Tin plate chromium-free passivation device and process |
| PCT/CN2022/083257 WO2022267590A1 (en) | 2021-06-23 | 2022-03-28 | Chromium-free passivation device and method for tinned plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110699924.5A CN115505917A (en) | 2021-06-23 | 2021-06-23 | Tin plate chromium-free passivation device and process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115505917A true CN115505917A (en) | 2022-12-23 |
Family
ID=84499699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110699924.5A Pending CN115505917A (en) | 2021-06-23 | 2021-06-23 | Tin plate chromium-free passivation device and process |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN115505917A (en) |
| WO (1) | WO2022267590A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114686945B (en) * | 2022-03-30 | 2024-01-02 | 赣州市文祥电镀有限公司 | Electroplated part processing equipment |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09137284A (en) * | 1995-11-09 | 1997-05-27 | Nkk Corp | Chemical conversion treatment of metallic plate |
| JPH10237670A (en) * | 1997-02-20 | 1998-09-08 | Nkk Corp | Spraying device used for chromate treatment |
| JPH10280164A (en) * | 1997-04-04 | 1998-10-20 | Nkk Corp | Chromate treating of galvanized steel sheet |
| JPH10317164A (en) * | 1997-05-16 | 1998-12-02 | Kawasaki Steel Corp | Method and device for reaction type chromate treatment of metallic sheet |
| JP2000096253A (en) * | 1998-09-18 | 2000-04-04 | Nisshin Steel Co Ltd | Chromate treatment of galvanized steel sheet |
| CN1628191A (en) * | 2002-02-07 | 2005-06-15 | 苏拉有限及两合公司 | Method and device for wetting a running filament strand |
| CN101898182A (en) * | 2010-07-13 | 2010-12-01 | 长沙湖大江远系统集成有限公司 | Method and device for adding plasticizer on loosened fiber tow belt |
| CN103263998A (en) * | 2013-06-06 | 2013-08-28 | 浙江农林大学 | Residual spraying mist collecting and recycling device |
| CN104289394A (en) * | 2013-07-16 | 2015-01-21 | 蒂森克虏拉塞斯坦有限公司 | Method for applying an aqueous treatment solution to the surface of a moving steel strip |
| CN104645810A (en) * | 2015-02-16 | 2015-05-27 | 河南理工大学 | Automatic hydrogen sulfide removal device in tunnel airflow |
| CN109923241A (en) * | 2016-10-06 | 2019-06-21 | 三菱重工业株式会社 | Surface processing device and surface treatment method |
| CN212943656U (en) * | 2020-08-12 | 2021-04-13 | 佛山市立大立塑新材料有限公司 | Spraying device for coating machine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005045034A1 (en) * | 2005-09-21 | 2007-03-29 | Rasselstein Gmbh | Method for passivating the surface of coated metal strips and device for applying the passive layer to a metal-coated steel strip |
| CN102632002A (en) * | 2012-04-20 | 2012-08-15 | 扬州市康嵩达机电设备有限公司 | Fine atomized glycerin spraying system |
-
2021
- 2021-06-23 CN CN202110699924.5A patent/CN115505917A/en active Pending
-
2022
- 2022-03-28 WO PCT/CN2022/083257 patent/WO2022267590A1/en unknown
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09137284A (en) * | 1995-11-09 | 1997-05-27 | Nkk Corp | Chemical conversion treatment of metallic plate |
| JPH10237670A (en) * | 1997-02-20 | 1998-09-08 | Nkk Corp | Spraying device used for chromate treatment |
| JPH10280164A (en) * | 1997-04-04 | 1998-10-20 | Nkk Corp | Chromate treating of galvanized steel sheet |
| JPH10317164A (en) * | 1997-05-16 | 1998-12-02 | Kawasaki Steel Corp | Method and device for reaction type chromate treatment of metallic sheet |
| JP2000096253A (en) * | 1998-09-18 | 2000-04-04 | Nisshin Steel Co Ltd | Chromate treatment of galvanized steel sheet |
| CN1628191A (en) * | 2002-02-07 | 2005-06-15 | 苏拉有限及两合公司 | Method and device for wetting a running filament strand |
| CN101898182A (en) * | 2010-07-13 | 2010-12-01 | 长沙湖大江远系统集成有限公司 | Method and device for adding plasticizer on loosened fiber tow belt |
| CN103263998A (en) * | 2013-06-06 | 2013-08-28 | 浙江农林大学 | Residual spraying mist collecting and recycling device |
| CN104289394A (en) * | 2013-07-16 | 2015-01-21 | 蒂森克虏拉塞斯坦有限公司 | Method for applying an aqueous treatment solution to the surface of a moving steel strip |
| CN104645810A (en) * | 2015-02-16 | 2015-05-27 | 河南理工大学 | Automatic hydrogen sulfide removal device in tunnel airflow |
| CN109923241A (en) * | 2016-10-06 | 2019-06-21 | 三菱重工业株式会社 | Surface processing device and surface treatment method |
| CN212943656U (en) * | 2020-08-12 | 2021-04-13 | 佛山市立大立塑新材料有限公司 | Spraying device for coating machine |
Non-Patent Citations (1)
| Title |
|---|
| D·萨塔斯: "纸及塑料等幅状材料加工技术与设备", 29 February 1992, 中国轻工业出版社, pages: 99 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022267590A1 (en) | 2022-12-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201807473U (en) | Novel aerosol nozzle without air resistance | |
| CN102390886A (en) | Preparation of organic/inorganic combined coating deadhesion agent and application of organic/inorganic combined coating deadhesion agent to spray painting wastewater | |
| CN207709242U (en) | A kind of fluxing agent spray equipment for carbon steel hot-dip aluminizing | |
| CN101318174A (en) | Silane treatment technique before electrostatic powder spraying of metal | |
| CN115505917A (en) | Tin plate chromium-free passivation device and process | |
| CN111733402A (en) | Over-and-under type chemical plating bath system convenient to wash fast | |
| CN100432291C (en) | New type environmental protective metal finishing liquid, and processing method | |
| CN111850260B (en) | Water spraying system for heat treatment of metal plate strip and control method | |
| CN216790813U (en) | Steam-water atomization type electrode spraying device | |
| CN206143295U (en) | Galvanized strip steel plates back cooling device | |
| CN205904018U (en) | Nanometer spraying plating machine | |
| CN100594989C (en) | Coating liquid spraying apparatus in control-releasing fertilizer production | |
| CN206451759U (en) | A kind of roll-to-roll preparation facilities of fuel cell membrane electrode | |
| CN207085664U (en) | A kind of heavy pressure fine spray SNCR denitration system | |
| CN206319861U (en) | A kind of low discharge injecting system | |
| CN106391353B (en) | Cast-rolling aluminum prevents adhesion spraying process method | |
| CN216039903U (en) | Spraying flow distribution control device in electroplating bath | |
| CN211754725U (en) | Atomizing and spraying device of sintering mixer | |
| CN217709282U (en) | Novel heating and spraying device for compound fertilizer coated oil | |
| CN2376340Y (en) | Horizontal applying apparatus | |
| CN220716268U (en) | Glaze slurry spray gun for inner wall of bottom cover of water heater liner | |
| CN218120541U (en) | Drying device for crystalline aluminum chloride | |
| CN209584370U (en) | A kind of environment-friendly type drilling tool phosphating equipment | |
| CN213914370U (en) | Novel shielding spray gun | |
| CN215030191U (en) | Nozzle of waterless heating salt spray corrosion box |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |