CN1786288A - Galvanization technology - Google Patents
Galvanization technology Download PDFInfo
- Publication number
- CN1786288A CN1786288A CN 200510061516 CN200510061516A CN1786288A CN 1786288 A CN1786288 A CN 1786288A CN 200510061516 CN200510061516 CN 200510061516 CN 200510061516 A CN200510061516 A CN 200510061516A CN 1786288 A CN1786288 A CN 1786288A
- Authority
- CN
- China
- Prior art keywords
- product
- washing
- zinc
- transported
- minutes
- 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
Landscapes
- Electroplating Methods And Accessories (AREA)
Abstract
The invention mainly relates to a zinc plating technique. It includes zinc plating pretreatment and treatment. The zinc plating treatment includes the following steps: zinc plating: opening cathode movement; adjusting current density 2-5A/dm2; former 3-5min current is high after putting cell; adjusting to middle current after 15-20min; adjusting to low current for 3-5min after painting; washing; chemical polishing; zinc yellow purifying: purifying solution pH value is controlled at 1.3-1.9; purifying time is 10-30s; purifying solution is made by Zn32L gold bluntness; density is 20- 30mL/L; washing; sealed dipping; blowing; drying; examining. The advantages of the invention are economizing material, improving efficiency, quality, and output.
Description
Technical field
The present invention relates to process of surface treatment, mainly is a kind of zincincation.
Background technology
Shanghai Delphi J200 product is the leading product of my company exploitation in this year, and the J200 series product are the key parts on a kind of breaking system of new model.This part requirement surface galvanizing Passivation Treatment, my company electroplated according to old explained hereafter, cost height not only, the time is long, and quality does not reach requirement of client, and the while production capacity can't satisfy client's demand at all.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency and a kind of potassium chloride zinc plating process is provided.During work, the pre-treatment pickling time is short, and the piece surface pickling is thorough and improve Working environment, and the aftertreatment electroplating time shortens greatly than former technology, passivation thickness, color even.
The technical solution adopted for the present invention to solve the technical problems.This zincincation mainly comprises zinc-plated pre-treatment and zinc-plated processing, and zinc-plated processing key step is as follows:
1), zinc-plated: will hang in zinc bath through the product of washing, the zinc-plated preceding negative electrode of opening moves, and adjusts current density 2～5A/dm
2Go into the high electric current that transferred to 375A-400A in preceding 3～5 minutes behind the groove simultaneously, transferred to the middle electric current of 250A-350A in 15～20 minutes later, treat whole hang product and plate substantially after, transfer to the low current 3～5 minutes of 75A-100A again: adopt room temperature condition during work, join groove content ZnCl
260～80g/L, KCl200～250g/L, H
3BO
425～30g/L opens cylinder agent 20～30ml/L, brightening agent 0.5～1ml/L, and the zinc-plated time was controlled at 25～30 minutes;
2), washing: the product that will plate zinc is transported into washing trough washery 2 times from accumulator tank;
3), chemical rightenning: the product after will washing was transported into light output groove interior 5～8 seconds, and concentration is 3% nitric acid;
4), washing: the product after the bright dipping is transported into washing trough washery 2～3 times;
5), zinc yellow passivation: will hang in the yellow deactivation slot through the product of washing, the passivating solution pH value is controlled between 1.3～1.9, passivation time 10～30 seconds, stir with oil-free compressed air at the following 60cm of deactivation slot liquid level place, liquid PH value is higher than at 1.9 o'clock, and to use hydrochloric acid adjustment, the concentration when joining groove be 20～30mL/L;
6), washing: will be transported into duplex flowing water washing trough washing 3～4 times through the product of transpassivation;
7), sealing dipping: will be transported into enclosed slot through the product of washing and go into dipping, the time is 5～10 seconds, encapsulant strength of solution 10～15%;
8), dry up: the product after sealing hangs out the outside, dries up with pressurized air;
9), oven dry: the product that dries up is lifted up into drying in oven, and temperature is 50～70 ℃, 5～15 minutes time;
10), hang check down.
The effect that the present invention is useful is: 1, economize in raw materials.Hydrochloric acid is reduced to the 5T/ month by the original 7T/ month, can save the hydrochloric acid about 20% that pickling is used, and 818A, B series brightening agent is reduced to the 200kg/ month by the original 600kg/ month, and sheet alkali consumption is reduced to the 2.5T/ month by the original 4T/ month.2, raise the efficiency.After improving technology, the pickling time foreshortened to 5～8 minutes by original 8～15 minutes.The zinc-plated time foreshortened to 25～30 minutes by original 45～60 minutes.3, improve the quality.After improving zincincation, thickness of coating is controlled between 8～20 μ, and the thickness uniformity, and the basic no color differnece of zinc-plated color reaches client's demand.4, production capacity promotes, and existing throughput rises to 1,200,000/year by former 600,000/year, is equivalent to and has gone up a same production line.
Embodiment
Below in conjunction with embodiment the present invention is further described.
This zincincation mainly comprises the steps to finish:
1, goes up extension: product is hung on the hanger by direction;
2: chemical oiling: hanger is put into the electrochemical deoiling groove together with product with driving, every liter of degreasing fluid is with spent meal 20～50g/L (the oasis spent meal that chemical plant, oasis, Xiaoshan, Hangzhou produces), 15～30 minutes oil removing time, 60～80 ℃ of temperature, every liter of content is lower than 20g and need adds by analysis;
3, hot water wash: will be transported into through the product of electrochemical deoiling in the hot water washing trough and wash up and down several times, and change when water temperature greater than 60 ℃ muddiness takes place.
4, duplex cold wash: will be transported into the washing trough of duplex cold water through the product of hot water wash and clean 2 times, the water that cleans in the time slot should keep mobile, changes clear water when muddiness takes place.
5, pickling: will hang down through the product of cold wash, and put into following little pickling tank and carry out pickling.Because of little pickling tank is few with the acid amount, and it is convenient to change acid solution, simultaneously can be fully effectively the acid mist sucking-off.Product will immerse fully during pickling, pickling content HCL250～350g/L, HF10～15g/L, 5～8 minutes pickling time.The direct vat pickling of former technology, long 8～15 minutes of time, and pickling is unclean, and big with the acid amount.
6, washing.The product that pickling is good is put into washing bath, and water is the submergence product fully, and water should keep mobile in the cleaning time slot.
7, go up extension, electrolytic degreasing.Be transported in the electrolytic degreasing groove going up the product of hanging after the cold wash, its major ingredient is KLEANEXP105 electrolytic degreasing powder (production of Nanjing hypo equipment company limited), content 40～60g/L, 70～90 ℃ of temperature, 2～8 minutes electrolytic degreasing time.
8, washing.To be transported into duplex washing trough washery 2～3 times through the product of electrolytic degreasing, the water trough inner water should be a mobile, changes when muddy.
9, activation weak acid is washed.To be transported into activated bath through the product of washing, the solution main component is 8～10% hydrochloric acid, soak time 5～10 seconds.
10, washing.To be transported into washing bath through the activatory product, it is mobile that water should keep, and about 30 seconds time, changes when muddy.
11, zinc-plated.To hang in zinc bath through the product of washing, the zinc-plated preceding negative electrode of opening moves, and adjusts current density 2～5A/dm
2, generally speaking summer the electric current height a bit, winter, electric current was a little low.Preceding 3～5 minutes electric currents of going into simultaneously behind the groove are slightly high a bit about 375A-400A, later transferred to the middle electric current of 250A-350A in 15～20 minutes, after treating that whole extension product plates substantially, transfer to the low current 3～5 minutes of 75A-100A again, so just present heighten, in, low current, and turn down electric current and also coating bath played a maintaining effect.Adopt room temperature condition during work, join groove content ZnCl
260～80g/L, KCl200～250g/L, H
3BO
425～30g/L, the zinc-plated L-818B of Repone K opens cylinder agent 20～30ml/L, L-818A brightening agent (the high grade potassium chloride bright galvanization of L-818A brightening agent, opening cylinder agent and brightening agent is produced by Wuhan Aobang Surface Technique Co., Ltd.) 0.5～1ml/L, the zinc-plated time was controlled at 25～30 minutes according to the product difference.Daily cylinder agent, the brightening agent added out should be taked to spare no effort to, repeatedly, in a small amount.
12, reclaim.The product that has plated zinc is transported into the accumulator tank washing.Time is 1 minute.
13, washing.Product is transported into washing trough washery 2 times from accumulator tank, and the water in the groove should keep mobile, changes when muddy.
14, bright dipping.Be exactly chemical rightenning, the product after the washing is transported in the light output groove 5～8 seconds, concentration is 3% nitric acid.
15, washing.Product after the bright dipping is transported into washing trough washery 2～3 times, and it is mobile that water should keep.
16, zinc yellow passivation.To hang in the yellow deactivation slot through the product of washing, product should immerse in the passivating solution fully.The passivating solution pH value is controlled between 1.3～1.9, passivation time 10～30 seconds.Because of the product on the hanger enter in the passivating solution poor if having time, so just there is aberration to occur, for overcoming this difficult problem, equipment is reequiped, stir with oil-free compressed air at the following 60cm of deactivation slot liquid level place, so just accelerated the product passivation reaction of upper half part, the product that makes passivation come out has not just had aberration.Passivating solution is with the golden yellow blunt preparation of Zn32L (production of Nanjing hypo equipment company limited), and liquid PH value is higher than at 1.9 o'clock uses the hydrochloric acid adjustment, light additional Zn32L passivating solution, and the concentration when joining groove is 20～30mL/L.
17, washing.To be transported into duplex flowing water washing trough washing 3～4 times through the product of transpassivation.
18, sealing dipping.To be transported into enclosed slot through the product of washing and go into dipping, the time is 5～10 seconds, and strength of solution 10～15% is mainly used 5000 type encapsulants (production of Nanjing hypo equipment company limited).
19, dry up.Product after sealing hangs out the outside, dries up with pressurized air.
20, oven dry.The product that dries up is lifted up into drying in oven, and temperature is 50～70 ℃, 5～15 minutes time.
21, hang check down.
Claims (4)
1, a kind of zincincation mainly comprises zinc-plated pre-treatment and zinc-plated processing, it is characterized in that: zinc-plated processing key step is as follows:
1), zinc-plated: will hang in zinc bath through the product of washing, the zinc-plated preceding negative electrode of opening moves, and adjusts current density 2～5A/dm
2, go into the high electric current that transferred to 375A-400A in preceding 3～5 minutes behind the groove simultaneously, transferred to the middle electric current of 250A-350A in 15～20 minutes later, treat whole hang product and plate substantially after, transfer to the low current 3～5 minutes of 75A-100A again; Adopt room temperature condition during work, join groove content ZnCl
260～80g/L, KCl 200～250g/L, H
3BO
425～30g/L opens cylinder agent 20～30ml/L, brightening agent 0.5～1ml/L, and the zinc-plated time was controlled at 25～30 minutes;
2), washing: the product that will plate zinc is transported into washing trough washery 2 times from accumulator tank;
3), chemical rightenning: the product after will washing was transported into light output groove interior 5～8 seconds, and concentration is 3% nitric acid;
4), washing: the product after the bright dipping is transported into washing trough washery 2～3 times;
5), zinc yellow passivation: will hang in the yellow deactivation slot through the product of washing, the passivating solution pH value is controlled between 1.3～1.9, passivation time 10～30 seconds, stir with oil-free compressed air at the following 60cm of deactivation slot liquid level place, liquid PH value is higher than at 1.9 o'clock, and to use hydrochloric acid adjustment, the concentration when joining groove be 20～30mL/L;
6), washing: will be transported into duplex flowing water washing trough washing 3～4 times through the product of transpassivation;
7), sealing dipping: will be transported into enclosed slot through the product of washing and go into dipping, the time is 5～10 seconds, encapsulant strength of solution 10～15%;
8), dry up: the product after sealing hangs out the outside, dries up with pressurized air;
9), oven dry: the product that dries up is lifted up into drying in oven, and temperature is 50～70 ℃, 5～15 minutes time;
10), hang check down.
2, zincincation according to claim 1 is characterized in that: described zinc-plated pre-treatment key step is as follows:
1), goes up extension: product is hung on the hanger by direction;
2), chemical oiling: with driving hanger is put into the electrochemical deoiling groove together with product, every liter of degreasing fluid is with spent meal 20～50g/L, 15～30 minutes oil removing time, 60～80 ℃ of temperature;
3), hot water wash: will be transported into through the product of electrochemical deoiling in the hot water washing trough and wash up and down;
4), duplex cold wash: will be transported into the washing trough of duplex cold water through the product of hot water wash and clean;
5), pickling: will hang down through the product of cold wash, putting into following little pickling tank carries out pickling, pickling content HCL250～350g/L, HF10～15g/L, 5～8 minutes pickling time;
6), washing: the product that pickling is good is put into washing bath, and water is the submergence product fully, and water should keep mobile in the cleaning time slot;
7), go up extension and electrolytic degreasing: be transported in the electrolytic degreasing groove content 40～60g/L of electrolytic degreasing powder, 70～90 ℃ of temperature, 2～8 minutes electrolytic degreasing time with going up the product of hanging after the cold wash;
8), washing: will be transported into duplex washing trough washery 2～3 times through the product of electrolytic degreasing;
9), activation weak acid is washed: will be transported into activated bath through the product of washing, the solution main component is 8～10% hydrochloric acid, soak time 5～10 seconds;
10), washing: will be transported into washing bath through the activatory product.
3, zincincation according to claim 1 is characterized in that: the described zinc-plated L-818B of cylinder agent employing Repone K that opens, brightening agent adopts L-818A.
4, zincincation according to claim 1 is characterized in that: described passivating solution adopts Zn32L golden yellow blunt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510061516 CN1786288A (en) | 2005-11-09 | 2005-11-09 | Galvanization technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510061516 CN1786288A (en) | 2005-11-09 | 2005-11-09 | Galvanization technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1786288A true CN1786288A (en) | 2006-06-14 |
Family
ID=36783899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510061516 Pending CN1786288A (en) | 2005-11-09 | 2005-11-09 | Galvanization technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1786288A (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102242380A (en) * | 2010-05-13 | 2011-11-16 | 天津市大港镀锌厂 | Method for reinforcing uniformity of zinc plating passivation layer |
| CN103114317A (en) * | 2011-11-17 | 2013-05-22 | 天津市大港镀锌厂 | Novel electroplating process |
| CN105112911A (en) * | 2015-09-09 | 2015-12-02 | 宁波亚大金属表面处理有限公司 | Surface treatment process for cooling water pipe joint assembly |
| CN105132907A (en) * | 2015-09-09 | 2015-12-09 | 宁波亚大金属表面处理有限公司 | Surface treatment process for eye joint of brake pipe |
| CN105132906A (en) * | 2015-09-09 | 2015-12-09 | 宁波亚大金属表面处理有限公司 | Surface treatment process for fuel pipe union assembly of engine |
| CN105670480A (en) * | 2016-03-31 | 2016-06-15 | 广州超邦化工有限公司 | Zinc-nickel alloy coating and zinc coating nano modified sealant, and preparation and application methods thereof |
| CN106011963A (en) * | 2016-07-04 | 2016-10-12 | 常州广宇蓝天表面技术科技发展有限公司 | Electrogalvanizing technological method |
| CN106086952A (en) * | 2016-07-29 | 2016-11-09 | 重庆鹏雷汽车配件有限公司 | The rack plating method of trivalent coloured silk zinc |
| CN106086951A (en) * | 2016-07-29 | 2016-11-09 | 重庆鹏雷汽车配件有限公司 | The method of barrel electroplating of trivalent coloured silk zinc |
| CN106868438A (en) * | 2017-03-25 | 2017-06-20 | 陈顶凯 | Steel structure zincincation |
| CN107142439A (en) * | 2017-06-29 | 2017-09-08 | 十堰市协兴工贸有限公司 | The handling process method of process can be reduced after a kind of workpiece is zinc-plated |
| CN107236977A (en) * | 2017-06-29 | 2017-10-10 | 十堰市协兴工贸有限公司 | A kind of electroplating pretreatment process optimization method |
| CN107299365A (en) * | 2017-06-29 | 2017-10-27 | 十堰市协兴工贸有限公司 | A kind of weldment plates post-passivation process |
| CN107604399A (en) * | 2017-10-31 | 2018-01-19 | 广东骏亚电子科技股份有限公司 | A kind of electro-plating method based on ultrasonic wave |
| CN108396342A (en) * | 2018-03-29 | 2018-08-14 | 珠海市玛斯特五金塑胶制品有限公司 | Full-automatic galvanizing system and method |
| CN108436090A (en) * | 2018-04-04 | 2018-08-24 | 广东鸿图南通压铸有限公司 | A kind of zincincation of powder metallurgy holder |
| CN109385649A (en) * | 2018-12-24 | 2019-02-26 | 陕西航天时代导航设备有限公司 | A kind of crisp acid cyanideless electro-plating zinc technology method of low hydrogen |
-
2005
- 2005-11-09 CN CN 200510061516 patent/CN1786288A/en active Pending
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102242380A (en) * | 2010-05-13 | 2011-11-16 | 天津市大港镀锌厂 | Method for reinforcing uniformity of zinc plating passivation layer |
| CN103114317A (en) * | 2011-11-17 | 2013-05-22 | 天津市大港镀锌厂 | Novel electroplating process |
| CN103114317B (en) * | 2011-11-17 | 2016-11-09 | 天津市大港镀锌厂 | Electroplating process |
| CN105112911A (en) * | 2015-09-09 | 2015-12-02 | 宁波亚大金属表面处理有限公司 | Surface treatment process for cooling water pipe joint assembly |
| CN105132907A (en) * | 2015-09-09 | 2015-12-09 | 宁波亚大金属表面处理有限公司 | Surface treatment process for eye joint of brake pipe |
| CN105132906A (en) * | 2015-09-09 | 2015-12-09 | 宁波亚大金属表面处理有限公司 | Surface treatment process for fuel pipe union assembly of engine |
| CN105670480A (en) * | 2016-03-31 | 2016-06-15 | 广州超邦化工有限公司 | Zinc-nickel alloy coating and zinc coating nano modified sealant, and preparation and application methods thereof |
| CN106011963A (en) * | 2016-07-04 | 2016-10-12 | 常州广宇蓝天表面技术科技发展有限公司 | Electrogalvanizing technological method |
| CN106086951A (en) * | 2016-07-29 | 2016-11-09 | 重庆鹏雷汽车配件有限公司 | The method of barrel electroplating of trivalent coloured silk zinc |
| CN106086952A (en) * | 2016-07-29 | 2016-11-09 | 重庆鹏雷汽车配件有限公司 | The rack plating method of trivalent coloured silk zinc |
| CN106868438A (en) * | 2017-03-25 | 2017-06-20 | 陈顶凯 | Steel structure zincincation |
| CN107142439A (en) * | 2017-06-29 | 2017-09-08 | 十堰市协兴工贸有限公司 | The handling process method of process can be reduced after a kind of workpiece is zinc-plated |
| CN107236977A (en) * | 2017-06-29 | 2017-10-10 | 十堰市协兴工贸有限公司 | A kind of electroplating pretreatment process optimization method |
| CN107299365A (en) * | 2017-06-29 | 2017-10-27 | 十堰市协兴工贸有限公司 | A kind of weldment plates post-passivation process |
| CN107142439B (en) * | 2017-06-29 | 2019-03-29 | 十堰市协兴工贸股份有限公司 | The processing method of process can be reduced after a kind of workpiece is zinc-plated |
| CN107604399A (en) * | 2017-10-31 | 2018-01-19 | 广东骏亚电子科技股份有限公司 | A kind of electro-plating method based on ultrasonic wave |
| CN108396342A (en) * | 2018-03-29 | 2018-08-14 | 珠海市玛斯特五金塑胶制品有限公司 | Full-automatic galvanizing system and method |
| CN108436090A (en) * | 2018-04-04 | 2018-08-24 | 广东鸿图南通压铸有限公司 | A kind of zincincation of powder metallurgy holder |
| CN109385649A (en) * | 2018-12-24 | 2019-02-26 | 陕西航天时代导航设备有限公司 | A kind of crisp acid cyanideless electro-plating zinc technology method of low hydrogen |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1786288A (en) | Galvanization technology | |
| CN104694983B (en) | A kind of acid electroplating zinc-nickel alloy electrolyte and preparation method thereof and its electro-plating method | |
| CN102677116B (en) | Method for dipulse preplating non-cyanide alkaline copper on ferro matrix | |
| CN103510130B (en) | Trivalent hard chromium electro-plating method | |
| CN109957822B (en) | Copper alloy electroplating process | |
| CN204434751U (en) | A kind of fully automatic electric coating apparatus | |
| CN111058068A (en) | Processing technology of zinc-plated nickel alloy | |
| CN109023447A (en) | A kind of preparation method of high-intensity and high-tenacity layered nano-structure copper | |
| CN107245736A (en) | A kind of auto parts and components electroplating technology | |
| CN1042843C (en) | Method for preparation of electroplating diamond grinding apparatus | |
| CN103243360A (en) | Zn-Ni alloy brush plating solution and brush plating method | |
| CN1818141A (en) | Method for coating Ni-P layer in same liquid by chemically plating and electrobath | |
| CN105780070A (en) | Alkaline zinc-nickel alloy electroplating technology and serial additives thereof | |
| CN1796609A (en) | Technique for plating alnico in copper plate type of crystallizer of conticaster | |
| CN101407927A (en) | Alkaline zinc-plating additive and process used for cyaniding liquid plating conversion thereof | |
| CN117187895A (en) | Boric acid-free chloride electrogalvanizing method | |
| CN1228475C (en) | Galvanization apparatus and process of tube-type crystallizer | |
| CN1058053A (en) | The method of electroplating bright nickel on Nd-Fe-B alloy | |
| US2146439A (en) | Zinc plating | |
| CN101857965A (en) | Method for depositing zinc and zinc-nickel alloy on surface of magnesium alloy without cyanogen or fluorine | |
| CN86102304A (en) | Pre-plating process before the acidic copper-plating of bright steel parts | |
| Mohan et al. | The effect of additives on the pulsed electrodeposition of copper | |
| CN104233296A (en) | Method for silvering aluminum and aluminum alloy | |
| CN101407928B (en) | Alkaline zinc-plating additive and zinc-plating process used for iron casting parts thereof | |
| CN111286767B (en) | Imitation gold electroplating solution electroplating method and imitation gold electroplating solution |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20060614 |