CN101381886B - Alkaline fog preventing method of alkaline non-cyanogen galvanization - Google Patents
Alkaline fog preventing method of alkaline non-cyanogen galvanization Download PDFInfo
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- CN101381886B CN101381886B CN2008101390127A CN200810139012A CN101381886B CN 101381886 B CN101381886 B CN 101381886B CN 2008101390127 A CN2008101390127 A CN 2008101390127A CN 200810139012 A CN200810139012 A CN 200810139012A CN 101381886 B CN101381886 B CN 101381886B
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Abstract
The invention provides a method for preventing alkali mist of an alkali non-cyanide zincification. The method is characterized in that an insoluble anode is completely immersed in plating solution during electroplating, and the distance from the top end of the anode to the solution surface is 5 to 20 percent of the depth of tank liquor. The method also proposes to make good insulation on the upper position and the lower position of the insoluble anode contacted with the solution surface, and ensures that the distance from the top end of uninsulated anode which is immersed in the plating solution to the solution surface is 5 to 20 percent of the depth of the tank liquor. The method has the advantages that pollution is directly controlled from headstream, anodic oxygen evolution can not be intensely spread along the anode directly during electroplating process, and alkali liquor is taken out to form alkali mist, so that a mist inhibitor is not need to be added, the temperature of the plating solution rises slowly, the effect of electroplating is good, the cost is reduced, and energy is saved.
Description
Technical field
The present invention relates to a kind of alkali prevention mist method of alkaline non-cyanogen galvanization.
Background technology
Alkaline non-cyanogen galvanization does not contain prussiate, and the zinc metal concentration is low, helps the disposal of three wastes, and most of producer of electroplating is all using.In electroplating process, mostly select for use steel plate as insoluble anode, replenish zine ion in the coating bath with external molten zinc groove.The advantage of this method is a bath stability, energy better controlled zine ion, and electroplating effect is good, specifically sees my patent application " a kind of selection of alkaline non-cyanogen galvanization anode material " for details.Because the cathode efficiency of alkaline non-cyanogen galvanization is low, 50-60% only, so can have following defective at electroplating process: the steel plate as insoluble anode partly is exposed in the air, and steel plate directly contacts with liquid level, so in electroplating process, the oxygen that anode is separated out is along with the positive plate fierceness liquid level of emerging, thereby takes alkali lye out of, form so-called " alkali mist ", production environment is polluted.This is electroplated producer adopts corresponding measure to protect: 1) adopt ventilation installation, not only ventilation installation cost an arm and a leg, and current consumption is big, and contaminate environment; 2) employing inhibiting fog agent, the affiliation that adds of inhibiting fog agent makes the plating bath surface produce one deck foam, causes the plating bath heat-up rate fast, if will lower the temperature also necessary configuration cooling system; If do not lower the temperature, then the depletion of additive amount in the plating bath is big, and needs to increase the burden of cleaning, otherwise occurs easily that coating is sent out mist, grown dim, the defective products of luminance brightness difference.
Summary of the invention
The objective of the invention is to propose a kind of alkali prevention mist method of alkaline non-cyanogen galvanization, to abandon above-mentioned defective.
The alkali prevention mist method of a kind of alkaline non-cyanogen galvanization of the present invention is characterized in that: during plating, insoluble anode all is immersed in the plating bath, the distance of anode top and liquid level is 5%～20% of the tank liquor degree of depth.
The present invention advocates that also the upper-lower position place that insoluble anode is contacted with liquid level carries out insulation when electroplating, and the anodic top of not insulating of immersing plating bath is 5%～20% of the tank liquor degree of depth from the liquid level distance.
Plating bath of the present invention is any alkaline non-cyanogen galvanization liquid.
The invention has the beneficial effects as follows, directly pollution is controlled, make that anode is analysed oxygen in electroplating process can directly not emerge along the anode fierceness from the source, thereby take alkali lye out of and can form the alkali mist, thereby can add inhibiting fog agent, the plating bath temperature rise is slow, electroplating effect is good, reduces cost, and saves the energy.
Description of drawings
Fig. 1 all is immersed in the plating bath as the anodic mild steel plate.
Fig. 2 insulate as the upper-lower position place that the anodic mild steel plate contacts with liquid level, and the anodic top of not insulating of immersing plating bath is 5%～20% of the plating bath degree of depth from the liquid level distance.
Fig. 3 does not insulate as the anodic mild steel plate.
Fig. 1, Fig. 2 is among Fig. 3: 1. anode, 2. negative electrode, 3. liquid level, 4. insulation, 5. workpiece, 6. mild steel plate, 7. alkaline non-cyanogen galvanization liquid, 8. anode top, the anodic top of 9. not insulating.
Embodiment
The alkali prevention mist method of a kind of alkaline non-cyanogen galvanization of the present invention as Fig. 1, Fig. 2 and shown in Figure 3, is set forth by embodiment.
Embodiment 1:
Get 800ml alkaline non-cyanogen galvanization electroplate liquid in the 1L beaker, put into mild steel plate 6 on the beaker both sides,
Embodiment 2:
Mild steel plate among the embodiment 1 is changed into the mild steel plate that is higher than liquid level, the upper-lower position place that contacts with liquid level 3 as the mild steel plate 6 of anode 1 carries out insulation 4, the anodic top 9 of not insulating of immersing alkaline non-cyanogen galvanization liquid 7 is 5%～20% of the plating bath degree of depth from liquid level 3 distances, is this example.As shown in Figure 2.The bubble that the anode edge of visual observations liquid level in the electroplating process produces is few; Take moistening pH test paper above plating bath, the nondiscoloration of pH test paper; In plating bath, put into thermometer, observe bath temperature and risen 3 ℃ than original temperature.Be that evaluation result is identical with embodiment 1, the alkali mist does not drain in the air.
Embodiment 3:
Mild steel plate among the embodiment 2 is not done insulation, be this example.As shown in Figure 3.The bubble that evaluation result is visual observations the anode edge of liquid level produces in the electroplating process is many; Take moistening pH test paper above plating bath, the variable color of pH test paper illustrates that the alkali mist drains in the air; In plating bath, put into thermometer, observe bath temperature and risen 3 ℃ than original temperature.
Comparative Examples 1:
Plating bath among the embodiment 3 is added inhibiting fog agent in electroplating process, be this example.The foam that evaluation result is visual observations liquid level produces in the electroplating process is many; Take moistening pH test paper above plating bath, the nondiscoloration of pH test paper illustrates that the alkali mist is also in dropping a hint; In plating bath, put into thermometer, observe bath temperature and risen 5 ℃, illustrate that tank liquor temperature obviously rises manyly when not adding inhibiting fog agent than original temperature.
The evaluation result of embodiment and Comparative Examples is gathered to table 1.
The evaluation result of table 1 embodiment and Comparative Examples
By the evaluation result of the foregoing description and Comparative Examples as seen, insoluble anode all is submerged into liquid level or the upper-lower position place that insoluble anode contacts with liquid level is carried out insulation, plating bath top pH remains unchanged, be the anode oxygen of separating out can be not directly from plating bath fierceness emerge, thereby take alkali lye out of and form the alkali mist, can add inhibiting fog agent, the plating bath temperature rise is slow.Use this method is electroplated, and can not produce the alkali mist in the production process, and it is healthy to help operator; And tank liquor heats up slow, improves product quality, can save the energy and can protect environment again, reaches cleaner production.
Claims (3)
1. the alkali prevention mist method of an alkaline non-cyanogen galvanization, it is characterized in that: during plating, insoluble anode all is immersed in the plating bath, the distance of anode top and liquid level is 5%～20% of the tank liquor degree of depth.
2. the alkali prevention mist method of an alkaline non-cyanogen galvanization, it is characterized in that: during plating, the upper-lower position place that insoluble anode is contacted with liquid level carries out insulation, and the anodic top of not insulating of immersing plating bath is 5%～20% of the tank liquor degree of depth from the liquid level distance.
3. the alkali prevention mist method of a kind of alkaline non-cyanogen galvanization according to claim 1 and 2, it is characterized in that: described plating bath is any alkaline non-cyanogen galvanization liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101390127A CN101381886B (en) | 2008-08-22 | 2008-08-22 | Alkaline fog preventing method of alkaline non-cyanogen galvanization |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008101390127A CN101381886B (en) | 2008-08-22 | 2008-08-22 | Alkaline fog preventing method of alkaline non-cyanogen galvanization |
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| CN101381886A CN101381886A (en) | 2009-03-11 |
| CN101381886B true CN101381886B (en) | 2010-04-14 |
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| CN2008101390127A Expired - Fee Related CN101381886B (en) | 2008-08-22 | 2008-08-22 | Alkaline fog preventing method of alkaline non-cyanogen galvanization |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3657080A (en) * | 1968-09-25 | 1972-04-18 | M & T Chemicals Inc | Mist suppression in electroplating solutions |
| US3948747A (en) * | 1975-05-09 | 1976-04-06 | Amax Inc. | Elimination or control of acid mists over electrolytic cells |
| US5093292A (en) * | 1989-11-22 | 1992-03-03 | Mitsui Toatsu Chemicals, Incorporated | Chromium oxide catalyst impregnation regeneration method |
| US5104496A (en) * | 1990-10-18 | 1992-04-14 | Optical Radiation Corporation | Low mist chromium plating method and system |
-
2008
- 2008-08-22 CN CN2008101390127A patent/CN101381886B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3657080A (en) * | 1968-09-25 | 1972-04-18 | M & T Chemicals Inc | Mist suppression in electroplating solutions |
| US3948747A (en) * | 1975-05-09 | 1976-04-06 | Amax Inc. | Elimination or control of acid mists over electrolytic cells |
| US5093292A (en) * | 1989-11-22 | 1992-03-03 | Mitsui Toatsu Chemicals, Incorporated | Chromium oxide catalyst impregnation regeneration method |
| US5104496A (en) * | 1990-10-18 | 1992-04-14 | Optical Radiation Corporation | Low mist chromium plating method and system |
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| CN101381886A (en) | 2009-03-11 |
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Owner name: HONGZHENG( FUJIAN ) CHEMICAL PRODUCT CO., LTD. Free format text: FORMER OWNER: YE JINZUI Effective date: 20090515 |
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Denomination of invention: Alkaline fog preventing method of alkaline non-cyanogen galvanization Effective date of registration: 20140418 Granted publication date: 20100414 Pledgee: Bank of Communications Ltd Zhangzhou branch Pledgor: Acer is (Fujian) Chemical Co. Ltd. Registration number: 2014350000013 |
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Denomination of invention: Alkaline fog preventing method of alkaline non-cyanogen galvanization Effective date of registration: 20150311 Granted publication date: 20100414 Pledgee: Bank of Communications Ltd Zhangzhou branch Pledgor: Acer is (Fujian) Chemical Co. Ltd. Registration number: 2015350000013 |
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