CN101550560A - Treatment method for using copper sulphate electrolysis method to strip residue copper on electroplating skeet chuck of PCB - Google Patents
Treatment method for using copper sulphate electrolysis method to strip residue copper on electroplating skeet chuck of PCB Download PDFInfo
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- CN101550560A CN101550560A CNA2009100313768A CN200910031376A CN101550560A CN 101550560 A CN101550560 A CN 101550560A CN A2009100313768 A CNA2009100313768 A CN A2009100313768A CN 200910031376 A CN200910031376 A CN 200910031376A CN 101550560 A CN101550560 A CN 101550560A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
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Abstract
The invention relates to a treatment method for using a copper sulphate electrolysis method to strip residue copper on an electroplating skeet chuck of a PCB, which is particularly a method for using the copper sulphate electrolysis method to strip the residue copper on the skeet chuck; the treatment method is characterized in that an anode lead connecting rod of a V-type copper base is connected with an anode of a rectifier; a cathode guide rod for hanging a copper plate is connected with a cathode of the copper plate; the skeet after blanking is arranged on the V-type cooper base; electrolysis is carried out to the skeet in an electrolytic bath; the copper on the skeet chuck is deposited on the cathode of the copper plate after being electrified; remaining copper after the electrolysis of the skeet chuck can not be treated completely by electrolysis and then are put into a microetch tank for chemical etching treatment; after the chemical etching treatment, high washing is carried out; and then materials can be loaded. The treatment method has simple technique, convenient operation and low cost, does not generate heavy metal waste solution, has little environmental pollution and can extract and recycle the copper, thus saving resources.
Description
Technical field
The present invention relates to a kind of copper sulfate electrolytic process and divest PCB and electroplate and to fly the method that the residual copper of target chuck is handled, be to use the electrolytic method of copper sulfate to divest the residual copper that flies on the target chuck specifically, belong to and fly the residual copper processing technology field of target chuck.
Background technology
Along with the development of China's electroplating industry, pollution becoming serious, about 400,000,000 tons of annual electroplating effluent quantity discharged, and a large amount of poisonous and hazardous prussiate that contains in the soiling solution and heavy metal ion have produced very big harm to environment.In prior art, use be that nitric acid or dioxysulfate water mixed liquid divest the residual copper that flies on the target chuck, adopt this mode to carry out stripping and hanging, contain heavy metal CU in the stripping and hanging waste liquid, serious environment pollution not only, waste liquid are difficult to handle, and the cost waste is very big.
Summary of the invention
The objective of the invention is to overcome above-mentioned weak point, electroplate the method that flies the residual copper of target chuck, not only can not produce the waste liquid that contains heavy metal copper, but also can reclaim the residual copper that flies on the target chuck thereby provide a kind of copper sulfate electrolytic process to divest; Both protect environment, can reclaim copper again.
According to technical scheme provided by the invention, a kind of copper sulfate electrolytic process divests electroplates the method that flies the residual copper of target chuck, adopts following processing step:
1, V-type copper seat positive wire union lever is connected the motor-generator set anode, the cathode collector bar of coppering plate links the motor-generator set negative electrode, and the target that flies after the blanking is placed on the V-type copper seat, carries out electrolysis in electrolyzer; The copper that flies after the energising on the target chuck will be deposited on the purpose that reaches stripping and hanging on the cathode plate; Electrolysis time is: 12～18min, and current density is: 6～10A/ASD;
2, fly have the copper of remainder electrolysis treatment to finish after the electrolysis of target chuck, put into the microetch groove then and sting erosion processing 8～12min, microetch groove temperature: room temperature as chemistry;
3, fly the target chuck after chemistry is stung the erosion processing, carry out high position washing 1～2min again, water level need flood and fly target copper bar upper end;
4, fly the target chuck and after high position washing, get final product material loading.
Electrolytic solution is the H2SO4 solution that contains CuSO4 in the described electrolyzer, and H2SO4 concentration is: 180-220g/l, and CuSO4 concentration is: 60-90g/l;
Micro-etching solution by H2SO4 is in the described microetch groove: 60～80 weight % and H2O2 are: 20～40 weight % are formulated.Described H
2SO
4Concentration is: 50%; H
2O
2Concentration is: 35%.
Compared with the prior art the present invention has the following advantages:
Root a tree name copper sulfate of the present invention is made galvanized principle, makes electrolytic solution with copper sulfate, makes soluble anode with the existing copper that flies on the target anchor clamps, makes negative electrode with titanium plate or copper coin, and energising back copper deposits on negative electrode, reaches the function of stripping and hanging; Technology is simple, and is easy and simple to handle, with low cost, and it is little can not produce heavy metal waste liquid environmental pollution, copper can be proposed to recycle utilize to economize on resources again.
Description of drawings
Fig. 1 is a structural front view of the present invention.
Embodiment
Embodiment during following the present invention incites somebody to action in conjunction with the accompanying drawings is further described:
Embodiment one:
A kind of copper sulfate electrolytic process of the present invention divests electroplates the method that flies the residual copper of target chuck, adopts following processing step:
As shown in Figure 1: the cathode collector bar 3, cathode plate or titanium plate 4, the electrolyzer 5 etc. that comprise V-type copper seat 1, V-type copper seat positive wire union lever 2, coppering plate.
Electrolyzer 5 cell body materials of the present invention adopt PP to make.Chuck adopts titanium matter chuck, and every flies 56 chucks of target.False sheet (negative electrode) uses steel plate or copper coin, and every flies target and uses 6 false sheets.
1, the target that flies after the blanking is placed on the V-type copper seat 1, in electrolyzer 5, carry out electrolysis, V-type copper seat positive wire union lever 2 connects the motor-generator set anode, the cathode collector bar 3 of coppering plate links motor-generator set negative electrode (motor-generator set specification: 1500A/12V), be the electrolytic solution of sulfuric acid and copper sulfate preparation in the electrolyzer 5: electrolytic solution is the H2SO4 solution that contains CuSO4 in the described electrolyzer, H2SO4 concentration is: 190g/l, CuSO4 concentration is: 65g/l.The copper that flies after the energising on the target chuck will be deposited on the purpose that reaches stripping and hanging on the cathode plate 4; Electrolysis time is: 12min, current density is: 6A/ASD.
2, fly to also have behind the cupric electrolysis on the target chuck copper of few part can't electrolysis treatment intact, putting into the microetch groove then stings erosion as chemistry and handles 8min. microetch groove temperature: room temperature. the microetch groove uses sulfuric acid (H2SO4) and hydrogen peroxide (H2O2) to be mixed with micro-etching solution, micro-etching solution get sulfuric acid (H2SO4) 60 weight % and hydrogen peroxide (H2O2) 40 weight % formulated.Described H2SO4 concentration is: 50%; H2O2 concentration is: 35%.
3, fly the target chuck and carry out high position washing 1～2min again after chemistry is stung the erosion processing, water level need flood and fly target copper bar upper end.
4, after high position washing, get final product material loading.
Electrolysis principle of the present invention:
Copper on the chuck (CU) loses electronics and becomes cupric ion (CU
2+) be distributed in the electrolytic solution cupric ion (CU in the electrolytic solution
2+) obtain electron reduction at cathode plate and become copper (CU) and be deposited on cathode plate plate face, reach the purpose that the copper on the chuck is divested.
Electroplate a line in PCB one factory and use motor-generator set electric current output 800A on May 21st, 2008 to August 22, reclaim 1560kg copper between the usage period altogether, use electric energy 7470 degree, reclaim copper according to 50 yuan/kg of market price, 0.8 yuan/degree of commercial power meter, actual gain Renminbi (7.8-0.6)=7.2 ten thousand yuan is saved the about 65T of nitric acid.
Embodiment two:
A kind of copper sulfate electrolytic process of the present invention divests electroplates the method that flies the residual copper of target chuck, adopts following processing step:
1, the target that flies after the blanking is placed on the V-type copper seat 1, in electrolyzer 5, carry out electrolysis, V-type copper seat positive wire union lever 2 connects the motor-generator set anode, the cathode collector bar 3 of coppering plate links motor-generator set negative electrode (motor-generator set specification: 1500A/12V), be the electrolytic solution of sulfuric acid and copper sulfate preparation in the electrolyzer 5: electrolytic solution is the H2SO4 solution that contains CuSO4 in the described electrolyzer, H2SO4 concentration is: 200g/l (, CuSO4 concentration is: 75g/l.The copper that flies after the energising on the target chuck will be deposited on the purpose that reaches stripping and hanging on the cathode plate 4; Electrolysis time is: 15min, current density is: 8A/ASD.
2, fly to also have behind the cupric electrolysis on the target chuck copper of few part can't electrolysis treatment intact, to put into the microetch groove then and sting erosion processing 10min. microetch groove temperature: room temperature as chemistry. the microetch groove uses sulfuric acid (H2SO4) and hydrogen peroxide (H2O2) to be mixed with micro-etching solution, micro-etching solution: it is formulated to get sulfuric acid (H2SO4) 70 weight % and hydrogen peroxide (H2O2) 30 weight %.Described H2SO4 concentration is: 50%; H2O2 concentration is: 35%.
3, fly the target chuck and carry out high position washing 1～2min again after chemistry is stung the erosion processing, water level need flood and fly target copper bar upper end.After high position washing, get final product material loading.
On May 15th, 2008 to July 15, two wires use motor-generator set electric current output 700A electroplated in PCB one factory, reclaim 897kg copper between the usage period altogether, use electric energy 4485 degree, reclaim copper according to 0.8 yuan of 50 yuan/kg of market price commercial power/degree meter, actual gain Renminbi (4.5-0.4)=3.9 ten thousand yuan is saved the about 40T. of nitric acid
Embodiment three:
A kind of copper sulfate electrolytic process of the present invention divests electroplates the method that flies the residual copper of target chuck, adopts following processing step:
1, the target that flies after the blanking is placed on the V-type copper seat 1, in electrolyzer 5, carry out electrolysis, V-type copper seat positive wire union lever 2 connects the motor-generator set anode, the cathode collector bar 3 of coppering plate links motor-generator set negative electrode (motor-generator set specification: 1500A/12V), be the electrolytic solution of sulfuric acid and copper sulfate preparation in the electrolyzer 5: electrolytic solution is the H2SO4 solution that contains CuSO4 in the described electrolyzer, H2SO4 concentration is: 210g/l, CuSO4 concentration is: 85g/l.
The copper that flies after the energising on the target chuck will be deposited on the purpose that reaches stripping and hanging on the cathode plate 4; Electrolysis time is: 18min, current density is: 10A/ASD.
2, fly to also have behind the cupric electrolysis on the target chuck copper of few part can't electrolysis treatment intact, put into the microetch groove then and sting erosion processing 12min. microetch groove temperature: room temperature as chemistry., the microetch groove uses sulfuric acid (H2SO4) and hydrogen peroxide (H2O2) to be mixed with micro-etching solution, micro-etching solution get sulfuric acid (H2SO4) 80 weight % and hydrogen peroxide (H2O2) 20 weight % formulated.Described H2SO4 concentration is: 50%: H2O2 concentration is: 35%.
3, fly the target chuck and carry out high position washing 1～2min again after chemistry is stung the erosion processing, water level need flood and fly target copper bar upper end.After high position washing, get final product material loading.
On July 10th, 2008 to October 10, four lines use motor-generator set electric current output 600A electroplated in PCB one factory, reclaim 1160kg copper between the usage period altogether, use electric energy 5800 degree, reclaim copper according to 0.8 yuan of 50 yuan/kg of market price commercial power/degree meter, actual gain Renminbi (5.8-0.5)=5.3 ten thousand yuan is saved the about 70T of nitric acid.
Claims (3)
1, a kind of copper sulfate electrolytic process divests and electroplates the method that flies the residual copper of target chuck, it is characterized in that: adopt following processing step:
(1), V-type copper seat positive wire union lever is connected the motor-generator set anode, the cathode collector bar of coppering plate links the motor-generator set negative electrode, and the target that flies after the blanking is placed on the V-type copper seat, carries out electrolysis in electrolyzer; The copper that flies after the energising on the target chuck is deposited on the cathode plate; Electrolysis time is: 12～18min, and current density is: 6～10A/ASD;
(2), fly to have after the electrolysis of target chuck the copper of remainder can't electrolysis treatment intact, put into the microetch groove then and sting erosion as chemistry and handle 8～12min.
(3), fly the target chuck and sting after erosion handles through chemistry, carry out high position washing 1～2mi n again, water level need flood and fly on the target copper bar;
(4), fly the target chuck and after high position washing, get final product material loading.
2, a kind of copper sulfate electrolytic process according to claim 1 divests the method that flies the residual copper of target chuck of electroplating, it is characterized in that electrolytic solution is the H2SO4 solution that contains CuSO4 in the described electrolyzer, H2SO4 concentration is: 180-220g/l, CuSO4 concentration is: 60-90g/l.
3, a kind of copper sulfate electrolytic process according to claim 1 divests and electroplates the method that flies the residual copper of target chuck, it is characterized in that micro-etching solution is formulated by H2SO4:60～80 weight % and H2O2:20～40 weight % in the described microetch groove.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100313768A CN101550560A (en) | 2009-04-30 | 2009-04-30 | Treatment method for using copper sulphate electrolysis method to strip residue copper on electroplating skeet chuck of PCB |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100313768A CN101550560A (en) | 2009-04-30 | 2009-04-30 | Treatment method for using copper sulphate electrolysis method to strip residue copper on electroplating skeet chuck of PCB |
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| CN101550560A true CN101550560A (en) | 2009-10-07 |
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| CNA2009100313768A Pending CN101550560A (en) | 2009-04-30 | 2009-04-30 | Treatment method for using copper sulphate electrolysis method to strip residue copper on electroplating skeet chuck of PCB |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101951732A (en) * | 2010-08-27 | 2011-01-19 | 昆山元茂电子科技有限公司 | Improved printed circuit board (PCB) plating line |
| CN103014825A (en) * | 2012-12-11 | 2013-04-03 | 傅本友 | Method for reducing or removing suspended copper at orifices |
| CN105441989A (en) * | 2015-11-26 | 2016-03-30 | 有研粉末新材料（北京）有限公司 | Method for making electrolytic copper powder fall off from negative plates easily |
| CN105543948A (en) * | 2015-12-23 | 2016-05-04 | 苏州卓融新能源科技有限公司 | Copper stripping process for dummy plates/corrugated plates for PCB electroplating |
| CN108190512A (en) * | 2018-02-09 | 2018-06-22 | 北矿机电科技有限责任公司 | A kind of chain transportation system of electrodeposit metals cathode plate |
| CN111088519A (en) * | 2019-12-27 | 2020-05-01 | 唐山国芯晶源电子有限公司 | Electrolytic equipment for cleaning silver plating and chromium plating clamp and electrolytic cleaning method |
-
2009
- 2009-04-30 CN CNA2009100313768A patent/CN101550560A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101951732A (en) * | 2010-08-27 | 2011-01-19 | 昆山元茂电子科技有限公司 | Improved printed circuit board (PCB) plating line |
| CN103014825A (en) * | 2012-12-11 | 2013-04-03 | 傅本友 | Method for reducing or removing suspended copper at orifices |
| CN105441989A (en) * | 2015-11-26 | 2016-03-30 | 有研粉末新材料（北京）有限公司 | Method for making electrolytic copper powder fall off from negative plates easily |
| CN105543948A (en) * | 2015-12-23 | 2016-05-04 | 苏州卓融新能源科技有限公司 | Copper stripping process for dummy plates/corrugated plates for PCB electroplating |
| CN105543948B (en) * | 2015-12-23 | 2017-10-31 | 苏州卓融新能源科技有限公司 | It is a kind of for PCB electroplate accompany plating plate/drag cylinder plate move back process for copper |
| CN108190512A (en) * | 2018-02-09 | 2018-06-22 | 北矿机电科技有限责任公司 | A kind of chain transportation system of electrodeposit metals cathode plate |
| CN111088519A (en) * | 2019-12-27 | 2020-05-01 | 唐山国芯晶源电子有限公司 | Electrolytic equipment for cleaning silver plating and chromium plating clamp and electrolytic cleaning method |
| CN111088519B (en) * | 2019-12-27 | 2023-12-29 | 唐山国芯晶源电子有限公司 | Electrolysis equipment and electrolysis cleaning method for cleaning silver-plated chromium-plated clamp |
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Open date: 20091007 |