CN110788061A - Surface cleaning device and cleaning method for ultrapure copper sheet - Google Patents
Surface cleaning device and cleaning method for ultrapure copper sheet Download PDFInfo
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- CN110788061A CN110788061A CN201911014205.4A CN201911014205A CN110788061A CN 110788061 A CN110788061 A CN 110788061A CN 201911014205 A CN201911014205 A CN 201911014205A CN 110788061 A CN110788061 A CN 110788061A
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- washing liquid
- isolation
- copper sheet
- liquid tank
- convex cap
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 54
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 54
- 239000010949 copper Substances 0.000 title claims abstract description 54
- 238000004140 cleaning Methods 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 65
- 238000002955 isolation Methods 0.000 claims abstract description 53
- 238000005406 washing Methods 0.000 claims abstract description 46
- 239000007788 liquid Substances 0.000 claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000001035 drying Methods 0.000 claims description 18
- 238000005192 partition Methods 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 13
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 12
- 238000003780 insertion Methods 0.000 claims description 12
- 230000037431 insertion Effects 0.000 claims description 12
- 239000008367 deionised water Substances 0.000 claims description 8
- 229910021641 deionized water Inorganic materials 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 7
- 239000003638 chemical reducing agent Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 238000003860 storage Methods 0.000 claims description 6
- 238000009461 vacuum packaging Methods 0.000 claims description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 230000003064 anti-oxidating effect Effects 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 230000007774 longterm Effects 0.000 claims description 3
- 238000007654 immersion Methods 0.000 claims description 2
- 239000002253 acid Substances 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 7
- 230000003647 oxidation Effects 0.000 abstract description 4
- 238000007254 oxidation reaction Methods 0.000 abstract description 4
- 238000011086 high cleaning Methods 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 229910017604 nitric acid Inorganic materials 0.000 description 2
- 238000005554 pickling Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 230000004224 protection Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000011538 cleaning material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000006210 lotion Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 230000001698 pyrogenic effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Images
Classifications
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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
- B08B3/04—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
- 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
- B08B3/10—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
-
- 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
- C23G1/10—Other heavy metals
- C23G1/103—Other heavy metals copper or alloys of copper
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/10—Temperature; Pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/08—Drying solid materials or objects by processes not involving the application of heat by centrifugal treatment
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Cleaning In General (AREA)
- Cleaning By Liquid Or Steam (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention provides a surface cleaning device for an ultrapure copper sheet, which comprises a material isolation sleeve, a material tray, a centrifugal rotating disc, an isolation washing liquid tank and an air heater, wherein the material isolation sleeve, the material tray and the centrifugal rotating disc are combined together, the material isolation sleeve comprises a plurality of placing spaces, the isolation washing liquid tank is provided with a plurality of subareas for containing different washing liquids, and the air heater dries the washed copper sheet. Has the advantages that: the invention has high cleaning efficiency and convenient material loading and unloading, and the cleaned copper plate has no residual acid water and shadow, thereby solving the oxidation phenomenon in the transportation process.
Description
Technical Field
The invention belongs to the field of high-purity metal cleaning, and relates to a surface cleaning device for an ultrapure copper sheet.
Background
The application requirement of the ultra-pure copper metal is that the purity is more than 6N, the ultra-pure copper metal is easy to oxidize in the cleaning process, the surface cleaning is very harsh, the environmental humidity cannot be high, and the ultra-pure copper metal is more difficult to process particularly for small-sized copper sheets cut by an electrolytic copper plate. The method comprises the following steps: reducing gas is used for pyrogenic reduction, so that firstly, the safety guarantee requirement is strict, the investment is large, and secondly, the oil stain on the copper sheet is not well cleaned; when the acid washing method is used, the method is mainly a manual cleaning mode, and acid washing is carried out after various omnibearing safety protections are required. Patent No. CN207013355U, which is a patent only for preliminary washing, drying and quick washing process after pickling of electrolytic copper plate, if oil stain is adhered on the plate, it can not be washed away by hot water, and no protection is provided in the later period, and it will be oxidized repeatedly very quickly. Because of the high purity, the drying process is fast and there must not be any traces of residual moisture or acid. When the two copper plates are overlapped together, acid cannot penetrate to the overlapped part during cleaning, and a black shadow is formed. When a device for bearing the copper sheet has a certain contact surface with the copper sheet, residual liquid traces appear on the contact surface in the drying process, the copper sheet becomes non-bright, no equipment with high automation degree can be realized at present, manual single sheet drying is mainly used, the residual water and acid traces are difficult to control, the cleaning time of 100kg is 2.5h, the efficiency is low, the oxidation and color change are easy to occur in the transportation process, and an efficient device and a method for cleaning the ultra-pure copper sheet are needed at present, so that the problems of residual liquid and oxidation and color change are solved, and the production efficiency is improved.
Disclosure of Invention
In order to solve the technical problems, the invention provides a surface cleaning device for an ultrapure copper sheet.
The technical scheme of the invention is as follows: a surface cleaning device for an ultrapure copper sheet comprises a material isolation sleeve, a material tray, a centrifugal rotary disc, an isolation liquid washing tank and a hot air blower, wherein the material isolation sleeve comprises a middle fixing column, a cross rod, an annular rod and a peripheral fixing wall, a handle is arranged at the upper part of the middle fixing column, and an insertion hole which is communicated up and down is formed in the middle fixing column; one end of the cross rod is fixed on the middle fixing column, the other end of the cross rod is fixed on the peripheral fixing wall, the cross rod is provided with more than two layers, and each layer is arranged in a radial shape; more than two annular rods are fixed on the cross rod, and the diameter of the annular rods is increased from the inner ring to the outer ring; a convex cap is arranged in the middle of the material tray, the external size and shape of the convex cap are matched with the size and shape of an inner insertion hole of the middle fixed column, the convex cap is inserted into the inner insertion hole of the middle fixed column, a bearing plate is arranged on the periphery of the lower part of the convex cap, an insertion hole is formed in the convex cap from bottom to top, and a hanging lug is arranged on the upper part of the convex cap; the middle upper part of the centrifugal turntable is provided with a plug, the middle lower part of the centrifugal turntable is provided with a fixed key, the size and shape of the plug are matched with those of the jack inside the convex cap, the plug is inserted into the jack inside the convex cap, and the fixed key is used for being fixed with a rotating shaft of the centrifugal machine; the isolated washing liquid tank is provided with a plurality of partition areas, the partition areas are filled with washing liquid, the material isolation sleeve and the material tray are hung and placed in the isolated washing liquid tank partition areas, and the bottom of the isolated washing liquid tank is placed on the rotary table; the hot air blower is movable, and dries the washed copper sheet.
Preferably: the cross bar is provided with a through hole, and the annular rod penetrates through the through hole and is fixed on the cross bar.
Further, the method comprises the following steps: the vacuum box is an anti-oxidation box during long-term storage, and the vacuum degree is less than or equal to 5.0 Pa.
It is preferable that: the peripheries of the convex cap and the plug are conical, and the upper part is small and the lower part is large.
The material isolation sleeve and the material tray are combined into the charging device of the ultrapure copper sheet, the diameter is 500-1500mm, the annular rod is rolled by a circular tube with the diameter of 5-10mm, and the material is one of titanium, PE-coated stainless steel and glass-coated stainless steel.
The air heater comprises a fan and a heating wire, the heating wire and the fan are respectively provided with an independent switch, and the fan operates independently or the fan and the heating wire operate simultaneously. The temperature of the hot air is 70-120 ℃, the wind speed is 1-10m/s, and the air outlet is rectangular with the size less than or equal to 500x1500 mm.
A method for cleaning the ultra-pure copper sheet according to the above-mentioned apparatus, the material isolation sleeve is sleeved into the material tray and formed and loaded the assembly, wait to clean the supplies to erect from the upper portion of the assembly and load into the small cell of sector separated by horizontal pole, annular pole; a, B, C, D areas in the isolated washing solution tank are filled with washing solution, deionized water and ethanol with a certain proportion; the hanger is connected to a speed reducer rotating shaft of the variable frequency motor, and the rotating speed of the charging assembly is controlled through the speed reducer; the charging assembly is immersed into the liquid in the partition of the isolated washing liquid tank, and the variable frequency motor is started to rotate at a low speed; after washing from one subarea of the isolation washing liquid tank, pulling up the subarea, rotating the isolation washing liquid tank to enable the next subarea to be below the charging assembly, enabling the charging assembly to enter the subarea, and sequentially completing the immersion, the rotary washing and the taking out of the A, B, C, D areas; after all the subareas of the isolation washing liquid tank are cleaned, moving the charging assembly to a centrifugal turntable, then putting the combination of the material isolation sleeve, the material tray and the centrifugal turntable into a centrifuge, putting an air heater above the centrifuge, rotating the centrifuge, and rapidly drying by matching the air heater; and (4) closing the heating wire after the rapid drying, continuously centrifuging and matching with normal-temperature air for rapid cooling, cooling to normal temperature, and directly carrying out vacuum packaging.
The improvement is that: and if the copper plate is stored for a long time, putting the cleaned and dried copper plate into a vacuum box for vacuum storage.
It is preferable that: the rotating speed of the charging assembly in the area A is 10-15 r/min, and the rotating speed in the area B, C, D is 20-30 r/min; the rotation speed of the centrifuge is 50 r/min, the temperature of the hot air blower is 70-120 ℃, the air speed is 1-10m/s, and the quick drying time is 10-15 min.
The invention has the beneficial effects that: the invention is a uniquely designed active set that subdivides the space and minimizes the contact area with the cleaning material. The cleaning efficiency is high, the loading and unloading are convenient, the cleaned copper plate has no residual acid water and shadow, and the oxidation phenomenon in the transportation process is avoided.
Drawings
FIG. 1 is a schematic view of a material isolation sleeve;
FIG. 2 is a schematic view of a material tray;
FIG. 3 is a schematic view of a centrifugal rotor disc;
FIG. 4 is a sectional view of the assembly of the material isolation sleeve, the material tray and the centrifugal turntable;
FIG. 5 is a schematic view of an isolated wash tank;
FIG. 6 is a schematic view of a state of centrifugal drying;
FIG. 7 is a top view of the combination of the material isolation sleeve, the material tray and the centrifugal rotor;
FIG. 8: the product of example 1 was applied to the surface before cleaning;
FIG. 9: the cleaned surface of the product of example 1;
FIG. 10: the product of example 2 surface before cleaning;
FIG. 11: the cleaned surface of the product of example 2;
FIG. 12: the surface of the product of comparative example 1 before cleaning;
FIG. 13: cleaned surface of the product of comparative example 1;
FIG. 14: the surface of the product of comparative example 2 before cleaning;
FIG. 15: cleaned surface of the product of comparative example 2;
reference numbers in the figures: 1-material isolation sleeve, 2-material tray, 3-centrifugal turntable, 4-isolation washing liquid tank, 5-air heater, 11-middle fixed column, 12-cross bar, 13-annular bar, 14-peripheral fixed wall, 15-handle, 21-convex cap, 22-ear, 31-plug and 32-fixed key.
Detailed Description
A surface cleaning device for an ultrapure copper sheet comprises a material isolation sleeve 1, a material tray 2, a centrifugal rotary disc 3, an isolation washing liquid tank 4 and an air heater 5, wherein the material isolation sleeve 1 comprises a middle fixing column 11, a cross rod 12, an annular rod 13 and a peripheral fixing wall 14, a handle 15 is arranged at the upper part of the middle fixing column 11, and a jack which is communicated up and down is arranged in the middle fixing column 11; one end of a cross bar 12 is fixed on the middle fixing column 11, the other end is fixed on the peripheral fixing wall 14, more than two layers of cross bars 12 are arranged in a radial shape; more than two annular rods 13 are fixed on the cross rod 12, and the diameter of the annular rods increases from the inner ring to the outer ring; a convex cap 21 is arranged in the middle of the material tray 2, the external size and shape of the convex cap 21 are matched with the size and shape of an inner insertion hole of the middle fixed column 11, the convex cap 21 is inserted into the inner insertion hole of the middle fixed column 11, a bearing plate is arranged on the periphery of the lower part of the convex cap 21, an insertion hole from bottom to top is arranged in the convex cap 21, and a hanging lug 22 is arranged on the upper part of the convex cap 21; the upper part of the middle of the centrifugal turntable 3 is provided with a plug 31, the lower part of the middle of the centrifugal turntable 3 is provided with a fixed key 32, the size and the shape of the plug 31 are matched with those of the jack inside the convex cap 21, the plug 31 is inserted into the jack inside the convex cap 21, and the fixed key 32 is used for being fixed with a rotating shaft of the centrifugal machine; the isolation washing liquid tank 4 is provided with a plurality of partition areas, the partition areas are filled with washing liquid, the material isolation sleeve 1 and the material tray 2 are hung and placed in the partition areas of the isolation washing liquid tank 4, and the bottom of the isolation washing liquid tank 4 is placed on a turntable (the turntable structure is just used for a dining table, and the materials are made of steel so as to ensure enough bearing capacity); the hot air blower 5 is movable and is used for drying the washed copper sheets. The air heater 5 comprises a fan and a heating wire, the heating wire and the fan are respectively provided with an independent switch, and the fan operates independently or the fan and the heating wire operate simultaneously. The vacuum box is an anti-oxidation box during long-term storage, and the vacuum degree is less than or equal to 5.0 Pa.
When in use, the material isolation sleeve 1 is sleeved into the material tray 2 to form a charging assembly, and materials to be cleaned are loaded into the small fan-shaped grids separated by the cross rod 12 and the annular rod 13 (the material plates are vertically placed in the grids) from the upper part of the assembly. The handle 15 is used for conveniently separating the material isolation sleeve 1 and the material tray 2, and the hanging lug 22 is used for hanging the combined body. An A, B, C, D area in the isolation washing liquid tank 4 is sequentially filled with acid, deionized water and ethanol in a certain ratio. The hanging lug 22 is connected to a speed reducer rotating shaft of the variable frequency motor through an iron wire, and the rotating speed of the charging assembly is controlled through the speed reducer. After the charging assembly is cleaned from one partition of the isolation washing liquid tank 4, the charging assembly is pulled up, and the isolation washing liquid tank 4 is rotated to enable the next partition to be below the assembly, and the assembly enters the partition. The speed of rotation of the charging assembly was 15 revolutions per minute when it was placed in zone A and 30 revolutions per minute when it was placed in zones B, C and D. After all the subareas of the isolation washing liquid groove 4 are cleaned, the loaded assembly is moved to a centrifugal turntable, then the combination of the material isolation sleeve 1, the material tray 2 and the centrifugal turntable 3 is placed in a centrifuge (a fixed key insertion hole is arranged in the centrifuge), an air heater 5 is placed above the centrifuge, the centrifuge rotates, and the air heater is matched with the air heater for rapid drying. The rotating speed of the centrifuge is 50 r/min, the hot air temperature of the air heater is 95 ℃, the air speed is 5m/s, the quick drying time is 10min, the heating wire is closed, the centrifuge is continuously matched with normal temperature air for quick cooling, and the vacuum packaging is directly carried out after the cooling to the normal temperature. When the copper plate is stored for a long time, the copper plate is arranged in a vacuum box for vacuum storage, so that the efficient cleaning process of the ultra-pure copper plate with a certain size is realized. The device can realize the cleaning and drying process of the electrolytic plate material with the width of 80-220mm and the length of 100-400mm, and when the size needs to be enlarged, the cleaning of the material with the length of less than or equal to 1000mm and the width of less than or equal to 400mm can be realized without adding an annular rod in the middle of the material isolation sleeve.
The ring-shaped rod 13 may be welded to the cross bar 12, or the cross bar 12 may be provided with a through hole through which the ring-shaped rod 13 is inserted and fixed to the cross bar 12.
The material isolation sleeve 1 and the material tray 2 are combined into a charging device of the ultrapure copper sheet, the diameter is 500-1500mm, the annular rod 13 is rolled by a circular tube with the diameter of 5-10mm, and the material is one of titanium, PE-coated stainless steel and glass-coated stainless steel.
The following examples illustrate the effects of the present device.
Example 1: (1) the copper plate with the purity of 6N5, the size of 120 x 300mm and the total weight of 260kg are loaded into a loading device consisting of a material isolation sleeve made of titanium and a material tray. (2) And putting acid liquor with the volume ratio of concentrated nitric acid to water being 1:0.8 at 1/2 of the height of the area A of the isolation washing liquid tank, and sequentially filling deionized water, deionized water and ethanol into the area B, C, D, wherein the filling amount is 1/2 of the height of each subarea. (3) And immersing the charging device into the area A of the isolated washing solution tank, wherein the rotating speed is 15 revolutions per minute and the time is 10 seconds. (4) And pulling up the charging device, rotating the isolation lotion tank to enable the area B to move to the position right below the charging device, and then submerging the charging device into the area B, wherein the rotating speed is 30 revolutions per minute, and the time is 2.5 minutes. (5) According to the step 4, the charging device is immersed into the zone C, the rotating speed is 30 revolutions per minute, and the time is 2.5 minutes. (6) According to the rule, the charging device is immersed into the zone D, the rotating speed is 30 revolutions per minute, and the time is 1 minute. (7) The charging device and the centrifugal turntable are combined and installed in centrifugal equipment, a hot air fan is started to blow hot air vertically downwards, the centrifugal equipment is started, the rotating speed is 50 revolutions per minute, and the time is 5 minutes. (8) And (5) closing the heating wire, continuously blowing air and centrifuging until the copper sheet is cooled to the normal temperature for 2 min. (9) And removing the hot air blower, hanging out the isolation sleeve, and carrying out vacuum packaging or vacuum preservation on the cleaned and dried copper sheet, wherein the vacuum degree needs to be below 5.0Pa during vacuum preservation. The above steps are repeated to realize the circulation operation, and the liquid in the isolated washing liquid tank is recovered until the PH value of the area A is more than or equal to 4.5, and the liquid enters the valuable metal treatment process of the recovered waste water. The product before and after cleaning is shown in fig. 8 and 9.
Example 2: (1) a copper plate having a purity of 6N5 was taken, and the plate was charged into a charging apparatus, wherein the plate had a size of 140 mm by 300mm and a total weight of 300 kg. (2) Taking sulfuric acid, water and glycol in a volume ratio of 1: 0.8: 0.2 of the mixed solution is preferably placed at 1/2 of the height of the zone A of the rotary tank, and deionized water, deionized water and ethanol are sequentially filled into the zone B, C, D, wherein the filling amount is 1/2 of the height of the rotary tank. (3) The subsequent steps were the same as in example 1. The product before and after cleaning is shown in fig. 10 and fig. 11.
Comparative example 1: (1) a copper plate with the purity of 6N5 was taken, the size was 140 mm by 300mm, the total weight was 100kg, and 10 baskets were contained for each 10 kg. (2) 50L of acid liquor with the volume ratio of nitric acid to water being 1:0.8 is taken and placed in a pickling tank, 200L of deionized water is taken and placed in a water washing tank, and 20L of alcohol is taken and placed in an alcohol tank. (3) And (3) manually washing in the tanks 1, 2 and 3 in turn for 50 min. (4) And then taking out the cleaned copper sheet for drying at 75 ℃, and turning over the copper sheet continuously by manpower for 1 h. (5) And naturally cooling the cleaned and dried copper sheet, and then carrying out vacuum packaging. The copper plate before and after cleaning is shown in fig. 12 and 13.
Comparative example 2: (1) and (2) and (3) putting the cleaned materials into a vacuum oven at 75 ℃ for 1h in the same way as in the comparative example 1 and (4). The copper plate before and after cleaning is shown in fig. 14 and 15.
Examples 1 and 2 and comparative examples 1 and 2 show that: in the embodiment, the surfaces of the fig. 8 to 11 are bright, have no residual black shadow and can be directly packaged into a product. In the comparative example, fig. 13 basically can be used, but the turnover is performed manually, which wastes time and labor, has a high rework rate, has a large amount of residual black shadows on the surface of fig. 15, is too slow in drying and aging, and needs to be reworked completely.
Claims (10)
1. A surface cleaning device for an ultrapure copper sheet is characterized in that: the washing machine comprises a material isolation sleeve (1), a material tray (2), a centrifugal turntable (3), an isolation washing liquid groove (4) and a hot air blower (5), wherein the material isolation sleeve (1) comprises an intermediate fixing column (11), a cross rod (12), an annular rod (13) and an outer periphery fixing wall (14), a handle (15) is arranged at the upper part of the intermediate fixing column (11), and a through insertion hole is formed in the intermediate fixing column (11) up and down; one end of the cross rod (12) is fixed on the middle fixing column (11), the other end is fixed on the periphery fixing wall (14), more than two layers of the cross rod (12) are arranged in a radial shape; more than two annular rods (13) are fixed on the cross rod (12), and the diameter of the annular rods increases from the inner ring to the outer ring; a convex cap (21) is arranged in the middle of the material tray (2), the external size and shape of the convex cap (21) are matched with the size and shape of an inner insertion hole of the middle fixing column (11), the convex cap (21) is inserted into the inner insertion hole of the middle fixing column (11), a bearing plate is arranged on the periphery of the lower part of the convex cap (21), the inner part of the convex cap (21) is provided with the insertion hole from bottom to top, and the upper part of the convex cap (21) is provided with a hanging lug (22); the upper part of the middle of the centrifugal turntable (3) is provided with a plug (31), the lower part of the middle of the centrifugal turntable is provided with a fixed key (32), the size and shape of the plug (31) are matched with those of the inner jack of the convex cap (21), the plug (31) is inserted into the inner jack of the convex cap (21), and the fixed key (32) is used for being fixed with a rotating shaft of the centrifugal machine; the isolation washing liquid tank (4) is provided with a plurality of partition areas, the partition areas are filled with washing liquid, the material isolation sleeve (1) and the material tray (2) are hung and placed in the partition areas of the isolation washing liquid tank (4), and the bottom of the isolation washing liquid tank (4) is placed on the rotary table; the hot air blower (5) is movable and is used for drying the washed copper sheets.
2. The surface cleaning device for the ultrapure copper sheet as claimed in claim 1, wherein: the cross bar (12) is provided with a through hole, and the annular rod (13) penetrates through the through hole and is fixed on the cross bar (12).
3. The surface cleaning device for the ultrapure copper sheet as claimed in claim 1, wherein: the vacuum box is an anti-oxidation box during long-term storage, and the vacuum degree is less than or equal to 5.0 Pa.
4. The surface cleaning device for the ultrapure copper sheet as claimed in claim 1, wherein: the peripheries of the convex cap (21) and the plug (31) are conical, and the upper part is small and the lower part is large.
5. The surface cleaning device for the ultrapure copper sheet as claimed in claim 1, wherein: the air heater (5) comprises a fan and a heating wire, the heating wire and the fan are respectively provided with an independent switch, and the fan operates independently or the fan and the heating wire operate simultaneously.
6. The surface cleaning device for the ultrapure copper sheet as claimed in claim 1, wherein: the hot air temperature of the hot air blower (5) is 70-120 ℃, the air speed is 1-10m/s, and the air outlet is rectangular with the size less than or equal to 500x1500 mm.
7. The surface cleaning device for the ultrapure copper sheet as claimed in claim 1, wherein: the material isolation sleeve (1) and the material tray (2) are combined into a charging device of the ultrapure copper sheet, the diameter is 500-1500mm, the annular rod (13) is rolled by a circular tube with the diameter of 5-10mm, and the material is one of titanium, PE-coated stainless steel and glass-coated stainless steel.
8. A method for cleaning an ultrapure copper flake according to the apparatus of claim 1, characterized in that: the material isolation sleeve (1) is sleeved into the material tray (2) to form a charging assembly, and materials to be cleaned are vertically charged into the small fan-shaped grids separated by the cross rod (12) and the annular rod (13) from the upper part of the assembly; each subarea in the isolated washing liquid tank (4) is filled with a certain proportion of washing liquid, deionized water and ethanol; the hanging lug (22) is connected to a speed reducer rotating shaft of the variable frequency motor, and the rotating speed of the charging assembly is controlled through the speed reducer; the charging assembly is immersed into the liquid in the partition of the isolated washing liquid tank, and the variable frequency motor is started to rotate at a low speed; after cleaning one subarea of the isolation cleaning solution tank (4), pulling up the subarea, rotating the isolation cleaning solution tank (4) to enable the next subarea to be positioned below the charging assembly, and enabling the charging assembly to enter the subarea to sequentially complete the immersion, the rotary cleaning and the taking out of each subarea; after all the subareas of the isolation washing liquid tank (4) are washed, moving the charging assembly to a centrifugal turntable (3), then putting a combination of the material isolation sleeve (1), the material tray (2) and the centrifugal turntable (3) into a centrifuge, and placing an air heater (5) above the centrifuge, wherein the centrifuge rotates and the air heater is matched with the air heater for rapid drying; and (4) closing the heating wire after the rapid drying, continuously centrifuging and matching with normal-temperature air for rapid cooling, cooling to normal temperature, and directly carrying out vacuum packaging.
9. The method according to claim 8, wherein the method comprises the steps of: and if the copper plate is stored for a long time, putting the cleaned and dried copper plate into a vacuum box for vacuum storage.
10. The method according to claim 8, wherein the method comprises the steps of: the rotating speed of each subarea of the charging assembly in the isolated washing liquid tank (4) is 15-30 r/min; the rotation speed of the centrifuge is 50 r/min, the temperature of the hot air blower is 70-120 ℃, the air speed is 1-10m/s, and the quick drying time is 10-15 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911014205.4A CN110788061A (en) | 2019-10-23 | 2019-10-23 | Surface cleaning device and cleaning method for ultrapure copper sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911014205.4A CN110788061A (en) | 2019-10-23 | 2019-10-23 | Surface cleaning device and cleaning method for ultrapure copper sheet |
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| CN110788061A true CN110788061A (en) | 2020-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911014205.4A Pending CN110788061A (en) | 2019-10-23 | 2019-10-23 | Surface cleaning device and cleaning method for ultrapure copper sheet |
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Application publication date: 20200214 |