CN1401823A - Process and special apparatus for electrogalvenizing inner and outer walls of steel pipe - Google Patents
Process and special apparatus for electrogalvenizing inner and outer walls of steel pipe Download PDFInfo
- Publication number
- CN1401823A CN1401823A CN 02135588 CN02135588A CN1401823A CN 1401823 A CN1401823 A CN 1401823A CN 02135588 CN02135588 CN 02135588 CN 02135588 A CN02135588 A CN 02135588A CN 1401823 A CN1401823 A CN 1401823A
- Authority
- CN
- China
- Prior art keywords
- hanger
- anode
- steel
- plate
- cathode
- 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.)
- Granted
Links
Images
Abstract
A process for electroplating the inner and outer surfaces of steel tube with Zn is disclosed. It is characterized by that its electroplating liquid has the merits of both alkaline zincate and cyanide used for plating zinc. Its apparatus is characterized by that an auxiliary anode is additionally used inside the steel tube to be plated, that is, its hanger plays the roles of both cathode and anodes. Its advantages are high anticorrosion power of its plated layer and enough thickness of internal plated layer.
Description
Affiliated technical field
The invention belongs to electroplating technology and equipment, particularly rotate the tubing inside and outside wall electroplating technology and the special-purpose plating tank structural part of shape.
Background technology
Existing electroplating technology has Repone K zinc-plated: the oil rub resistance ability, and covering power is general, and coating is crisp and resistance to corrosion is general; Common alkaline zincate galvanizing: the oil rub resistance ability is strong, and the ability of refinement coating crystal grain; Common cyaniding zinc-plated (containing little, basic, normal, high cyanogen): though the ability of dark plating and refinement coating crystal grain is better, the current density range that allows is narrow partially.Existing electroplating device and comprise plating tank and anode, negative electrode, be not suitable for plating the elongated tubular product, disclose a kind of supplementary anode spray-plating zinc solution electroplating steel pipe inner wall equipment and technology will for the zinc-plated CN1319685A of elongated tubular product, the proposition use is furnished with the spray hole hollow steel pipe and makees supplementary anode, hollow steel pipe be furnished with outward with by the matched insulation layer of steel plating inside pipe wall negative electrode, the pressure plating bath that connects recycle pump on the hollow steel pipe sprays from spray hole, though this scheme has solved by the mobile difficult problem of plating bath in the steel plating pipe, be not suitable for the zinc-plated problem of small-caliber steel pipe inwall.
Summary of the invention
The performance that the purpose of this invention is to provide a kind of existing good covering power, good crystal grain thinning reaches refinement coating, improve the etch resistant properties of coating, have the technology that the dirty characteristics of good oil resistant are applicable to small-caliber steel pipe inwall electro-galvanizing again, another object of the present invention provides the specific equipment of the technology that is applicable to small-caliber steel pipe inwall electro-galvanizing.
The present invention is achieved through the following technical solutions, a kind of steel pipe inside and outside wall galvanizing technique, comprise diluted alkaline oil removing, upward hanger, zinc-plated, hanger, cleaning, passivation, cleaning down, naturally dry operation, last hanger operation will be placed on the V-type hook of hanger cathode plate by the steel plating pipe for supplementary anode is penetrated by the steel plating pipe, and hanger anode steel plate is linked to each other with the anode thick stick with copper conductor, the hanger cathode plate is suspended on the cathode bar, and electroplating work procedure adopts the galvanizing flux prescription to be:
Zinc oxide (ZnO) 10-14 grams per liter
Sodium hydroxide (NaOH) 100-120 grams per liter
Sodium cyanide (NaCN) 20-30 grams per liter
DPE-III additive 1-3 milliliter/liter
ZB-80 additive 1-3 milliliter/liter,
Zinc-plated process temperature 10-40 ℃, time 20-30 branch, cathode current density 2-6 ampere/square decimeter, cathode area is 1 with the annode area ratio: 1-2.
DPE-III in the galvanizing flux prescription, the ZB-80 additive is the brightening agent commonly used (Wuhan Fengfan Electroplating Technology Co., Ltd's product) in traditional zincate galvanizing technology.
The specific equipment that steel pipe inside and outside wall galvanizing technique uses, comprise bath trough, anode, hanger, it is characterized in that: hanger comprises, hanger anode steel plate, the supplementary anode frame, supplementary anode, the hanger cathode plate, insulcrete, the supplementary anode frame is the rectangle with round steel and the welding of rectangular steel plate, many outside surfaces of equidistant welding are pressed the uniformly-spaced solid steel plug of winding plastic insulated wire on the rectangular steel plate at one end, as supplementary anode, welding rectangular steel plate at the other end of supplementary anode frame is hanger anode steel plate, the hanger cathode plate is that rectangular copper sheet is by doing the negative electrode conductiving point with supplementary anode identical distance distance and quantity welding V-type copper hook, insulcrete is rectangular plastic plate, be positioned in the middle of hanger cathode plate and the hanger anode steel plate, and twine the hanger cathode plate with the soft plastics band, insulcrete, hanger anode steel plate is fixed as one three plates.
When steel pipe is electroplated, the reinforcing bar plug is inserted, will be placed on the V-type copper hook of hanger cathode plate, hanger is put into plating tank by the steel plating pipe.The hanger cathode plate hangs on the cathode bar of coating bath, with the copper wire hanger anode steel plate is connected on the anode thick stick of coating bath to connect.Open rectifier, thickness or length (promptly being amassed by surfacing) according to pipe fitting are regulated electric current, make the zine ion of anode dissolution slowly be deposited on the pipe fitting outer wall, inside pipe wall and supplementary anode are separated out hydrogen under the effect of electric current simultaneously, oxygen makes and produces negative pressure in the pipe, promote the inside and outside electroplate liquid of pipe to produce convection current, bring in constant renewal in plating bath, thereby zine ion is deposited on pipe fitting inner wall, reach good inside and outside wall galvanized ideal effect simultaneously, and coating is even, adopts this technology and equipment can be reached more than 1/2 of outer wall thickness of coating by steel plating inside pipe wall thickness of coating.
Beneficial effect of the present invention is fairly obvious, the electroplate liquid of this process using has alkaline zincate galvanizing and the galvanized common superiority of prussiate concurrently, the performance of existing good covering power, good crystal grain thinning reaches refinement coating, improve the etch resistant properties of coating, have the dirty characteristics of good oil resistant again; DPE-III in this technical recipe, ZB-80 are the brightening agent commonly used (Wuhan Fengfan Electroplating Technology Co., Ltd's product) in traditional zincate galvanizing technology, play the effect that increases coating brightness again.When adopting this Processes and apparatus that the steel pipe inwall is electroplated, supplementary anode in the steel pipe is precipitated oxygen under the situation of conduction, inside pipe wall is separated out hydrogen can make formation negative pressure promotion electroplate liquid automated cycle renewal in the steel pipe, in electroplating process, can realize steel pipe inside and outside wall deposition zinc layer simultaneously, proof adopts this technology and equipment can (φ 6 * 0.7 * 2500mm-φ 20 * 1.0 * 3000mm) electroplates, and steel pipe inwall thickness of coating can reach outer wall after plating to small-bore long tube through testing in a large number and using
More than 1/2 of thickness of coating, and its special-purpose hanger can reach the effect at " tool the two poles of the earth ", and existing negative electrode conduction has the supplementary anode conduction again on the promptly same hanger.
The electro-galvanizing steel pipe that uses technology of the present invention and device fabrication uses prescription military green passivation usually after associated company of Chinese heavy-duty car industrial enterprise Technical Development Center detects, there is not any corrosion by this product behind 240 hours neutral salt spray tests, and other all has a large amount of scales or red rust when adopting the exemplar to 240 hour of prior art Zincing passivation, can prove that galvanizing technique and equipment that the present invention proposes have obvious improvement than prior art.
Description of drawings
Accompanying drawing 1 is fundamental diagram of the present invention
Fig. 2 is the hanging tool structure synoptic diagram,
Fig. 3 be the A-A of Fig. 2 to sectional view,
Fig. 4 is that the B-B of Fig. 2 is to sectional view
1. coating baths among the figure, 2. anode, 3. by the steel plating pipe, 4. supplementary anode, 5. insulated wire, 6. supplementary anode frame, 7. hanger anode steel plate, 8. insulcrete, 9. hanger cathode plate, 10.V type hook.
Embodiment
The invention will be further described below in conjunction with embodiment, a kind of steel pipe inside and outside wall galvanizing technique, comprise the diluted alkaline oil removing, go up hanger, zinc-plated, operation is dried in hanger, cleaning, passivation, cleaning naturally down, last hanger operation is for to penetrate supplementary anode by the steel plating pipe, to be placed on the V-type hook of hanger cathode plate by the steel plating pipe, hanger anode steel plate is linked to each other with the anode thick stick with copper conductor, the hanger cathode plate is suspended on the cathode bar, electroplating work procedure adopts the galvanizing flux prescription to be:
The galvanizing flux prescription:
Zinc oxide (ZnO) 10-14 grams per liter
Sodium hydroxide (NaOH) 100-120 grams per liter
Sodium cyanide (NaCN) 20-30 grams per liter
DPE-III additive 1-3 milliliter/liter
ZB-80 additive 1-3 milliliter/liter,
Zinc-plated process temperature 10-40 ℃, time 20-30 branch, cathode current density 2-6 ampere/square decimeter, cathode area is 1 with the annode area ratio: 1-2.
DPE-III in the galvanizing flux prescription, the ZB-80 additive is the brightening agent commonly used (Wuhan Fengfan Electroplating Technology Co., Ltd's product) in traditional zincate galvanizing technology.
Galvanizing flux prescription 1:
Zinc oxide (ZnO) 12 grams per liters
Sodium hydroxide (NaOH) 120 grams per liters
Sodium cyanide (NaCN) 25 grams per liters
2 milliliters/liter of DPE-III additives
2 milliliters/liter of ZB-80 additives,
Other Example formulations sees the following form:
| Raw material | 2 | 3 | 4 |
| Zinc oxide | 12 grams per liters | 11 grams per liters | 14 grams per liters |
| Sodium hydroxide | 100 grams per liters | 110 grams per liters | 115 grams per liters |
| Sodium cyanide | 20 grams per liters | 24 grams per liters | 29 grams per liters |
| DPE-III | 2.5 milliliter/liter | 1.5 milliliter/ | 3 milliliters/liter |
| ZB-80 | 2.5 milliliter/liter | 2 milliliters/liter | 1.5 milliliter/liter |
Zinc-plated process temperature 10-40 ℃, time 20-30 branch, cathode current density 2-6 ampere/square decimeter, cathode area is 1 with the annode area ratio: 1-2.
The specific equipment that steel pipe inside and outside wall galvanizing technique uses, comprise bath trough 1, anode 2, hanger anode steel plate 7, supplementary anode 4, hanger cathode plate 9, insulcrete 8, its structure is: the rectangular frame with long 1800mm round steel of φ 12mm and the rectangular steel plate welding of 1200 * 30 * 2mm is a supplementary anode frame 6, twine the φ 3.2 solid steel plugs of φ 0.5mm plastic insulated wire 5 on the at one end rectangular steel plate at interval by 2-3cm apart from many outside surfaces of welding by 5cm, as supplementary anode 4, welding rectangular steel plate at the other end of supplementary anode frame is hanger anode steel plate 7, to be the rectangular copper sheet of 1200 * 50 * 3mm do the negative electrode conductiving point by the V-type hook made from supplementary anode identical distance welding φ 3.2 copper welding rods 10 to hanger cathode plate 9, insulcrete 8 is that the rectangular plastic plate of 1200 * 50 * 3mm is positioned in the middle of cathode plate and the anode steel plate, and twines cathode plate with the soft plastics band, insulcrete, the anode steel plate is fixed as one three plates.
When steel pipe is electroplated, supplementary anode reinforcing bar plug is inserted by the steel plating pipe, hang on the cathode plate V-type copper coin, hanger is put into plating tank.The cathode plate of hanger hangs on the cathode bar of coating bath, with the copper wire hanger anode steel plate is connected on the anode thick stick of coating bath to connect.Open rectifier, thickness or length (promptly being amassed by surfacing) according to pipe fitting are regulated electric current, make the zine ion of anode dissolution slowly be deposited on the pipe fitting outer wall, inside pipe wall and supplementary anode are separated out hydrogen under the effect of electric current simultaneously, oxygen makes and produces negative pressure in the pipe, promote that electroplate liquid produces convection current in the pipe, bring in constant renewal in plating bath, thereby zine ion is deposited on pipe fitting inner wall, reach good inside and outside wall galvanized ideal effect simultaneously, and coating is even.
Claims (6)
1. steel pipe inside and outside wall galvanizing technique is characterized in that: comprise the diluted alkaline oil removing, go up hanger, zinc-plated, down hanger, cleaning, passivation, cleaning, dry each operation naturally,
Last hanger operation will be placed on the V-type hook of hanger cathode plate by the steel plating pipe for supplementary anode is penetrated by the steel plating pipe, and hanger anode steel plate is linked to each other with the anode thick stick with copper conductor, the hanger cathode plate is suspended on the cathode bar,
The galvanizing flux prescription that electroplating work procedure adopts:
Zinc oxide (ZnO) 10-14 grams per liter
Sodium hydroxide (NaOH) 100-120 grams per liter
Sodium cyanide (NaCN) 20-30 grams per liter
DPE-III additive 1-3 milliliter/liter
ZB-80 additive 1-3 milliliter/liter,
2. steel pipe inside and outside wall galvanizing technique according to claim 1 is characterized in that: DPE-III in the galvanizing flux prescription, the ZB-80 additive is the brightening agent commonly used (Wuhan Fengfan Electroplating Technology Co., Ltd's product) in traditional zincate galvanizing technology.
3. steel pipe inside and outside wall galvanizing technique according to claim 1 is characterized in that: zinc-plated process temperature 10-40 ℃, and time 20-30 branch, cathode current density 2-6 ampere/square decimeter, cathode area is 1 with the annode area ratio: 1-2.
4. the specific equipment that steel pipe inside and outside wall galvanizing technique according to claim 1 uses, comprise bath trough, anode, hanger, it is characterized in that: hanger comprises, hanger anode steel plate, the supplementary anode frame, supplementary anode, the hanger cathode plate, insulcrete, the supplementary anode frame is the rectangle with round steel and the welding of rectangular steel plate, many outside surfaces of equidistant welding are pressed the uniformly-spaced solid steel plug of winding plastic insulated wire on the rectangular steel plate at one end, as supplementary anode, welding rectangular steel plate at the other end of supplementary anode frame is hanger anode steel plate, the hanger cathode plate is that rectangular copper sheet is by doing the negative electrode conductiving point with supplementary anode identical distance distance and quantity welding V-type copper hook, insulcrete is rectangular plastic plate, be positioned in the middle of cathode plate and the anode steel plate, and twine cathode plate with the soft plastics band, insulcrete, the anode steel plate is fixed as one three plates.
5. the specific equipment that steel pipe inside and outside wall galvanizing technique according to claim 4 uses, it is characterized in that: supplementary anode solid steel diameter of mandrel can be 2-5mm, the insulated wire diameter is twined on the surface can be 0.5-3mm, also can be thickness 0.5-3mm, width is the plastic tape of 1-5mm, twines at interval to be 0.5-3cm.
6. the specific equipment that steel pipe inside and outside wall galvanizing technique according to claim 4 uses, it is characterized in that: the thickness of hanger anode steel plate, hanger cathode plate, insulcrete can be 2-4mm, and width can be 3-20cm, and length can be 0.5-1.2m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021355886A CN1173078C (en) | 2002-09-30 | 2002-09-30 | Process and special apparatus for electrogalvenizing inner and outer walls of steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021355886A CN1173078C (en) | 2002-09-30 | 2002-09-30 | Process and special apparatus for electrogalvenizing inner and outer walls of steel pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1401823A true CN1401823A (en) | 2003-03-12 |
| CN1173078C CN1173078C (en) | 2004-10-27 |
Family
ID=4748267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021355886A Expired - Fee Related CN1173078C (en) | 2002-09-30 | 2002-09-30 | Process and special apparatus for electrogalvenizing inner and outer walls of steel pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1173078C (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101255581B (en) * | 2007-12-14 | 2010-06-02 | 陈伯荣 | Alkaline chloride galvanizing agent and preparation method thereof |
| CN102321898A (en) * | 2011-08-22 | 2012-01-18 | 无锡鼎亚电子材料有限公司 | Electrolytic coating is crossed thin solution equipment in the direct insertion led support cup bowl |
| CN104152950A (en) * | 2014-08-20 | 2014-11-19 | 王新民 | Cyaniding tinning liquid |
| CN104975289A (en) * | 2014-04-01 | 2015-10-14 | 童上广 | Apparatus of plating zinc on copper wire |
| CN105386104A (en) * | 2014-09-04 | 2016-03-09 | 上海梅山钢铁股份有限公司 | Manufacturing method of inside-outside nickel-phosphorus alloy electroplating coal gun |
| CN106987878A (en) * | 2017-02-22 | 2017-07-28 | 周琼 | A kind of mirror roller is rotated with against device |
| CN107190291A (en) * | 2017-04-24 | 2017-09-22 | 云南冶金集团创能金属燃料电池股份有限公司 | A kind of electrodepositing zinc method in alkaline bath |
| CN107447250A (en) * | 2017-08-18 | 2017-12-08 | 中国航发贵州黎阳航空动力有限公司 | A kind of zinc-plated Simple clamp of conduit |
| CN108823624A (en) * | 2018-06-29 | 2018-11-16 | 苏州市金翔钛设备有限公司 | Tubular workpiece plating rack |
| CN109402687A (en) * | 2018-11-27 | 2019-03-01 | 中国航发贵州黎阳航空动力有限公司 | Ball cup surfaces externally and internally chrome-plating device |
| CN109594120A (en) * | 2018-11-16 | 2019-04-09 | 首都航天机械有限公司 | A kind of cylindrical shape stainless steel thin-wall bellows electropolishing method |
| CN110438537A (en) * | 2019-08-09 | 2019-11-12 | 常州大学 | A kind of novel high flux heat exchanger tube and preparation method thereof |
| CN110983418A (en) * | 2019-12-02 | 2020-04-10 | 北京北方车辆集团有限公司 | Electrogalvanizing hanging method for large-diameter gasket |
| CN112853450A (en) * | 2020-12-29 | 2021-05-28 | 石家庄飞机工业有限责任公司 | Method for manufacturing series-connected auxiliary anode for electroplating of inner hole part |
| CN115976613A (en) * | 2023-03-17 | 2023-04-18 | 江苏润硕管业有限公司 | Pipe fitting electroplating device |
-
2002
- 2002-09-30 CN CNB021355886A patent/CN1173078C/en not_active Expired - Fee Related
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101255581B (en) * | 2007-12-14 | 2010-06-02 | 陈伯荣 | Alkaline chloride galvanizing agent and preparation method thereof |
| CN102321898A (en) * | 2011-08-22 | 2012-01-18 | 无锡鼎亚电子材料有限公司 | Electrolytic coating is crossed thin solution equipment in the direct insertion led support cup bowl |
| CN102321898B (en) * | 2011-08-22 | 2015-01-14 | 无锡鼎亚电子材料有限公司 | Equipment for solving problem of too small thickness of galvanized coating in in-line type light-emitting diode (LED) support cup |
| CN104975289A (en) * | 2014-04-01 | 2015-10-14 | 童上广 | Apparatus of plating zinc on copper wire |
| CN104152950A (en) * | 2014-08-20 | 2014-11-19 | 王新民 | Cyaniding tinning liquid |
| CN105386104A (en) * | 2014-09-04 | 2016-03-09 | 上海梅山钢铁股份有限公司 | Manufacturing method of inside-outside nickel-phosphorus alloy electroplating coal gun |
| CN105386104B (en) * | 2014-09-04 | 2018-05-18 | 上海梅山钢铁股份有限公司 | A kind of manufacturing method of inside and outside nickel-phosphorus alloy plating coal rifle |
| CN106987878A (en) * | 2017-02-22 | 2017-07-28 | 周琼 | A kind of mirror roller is rotated with against device |
| CN107190291A (en) * | 2017-04-24 | 2017-09-22 | 云南冶金集团创能金属燃料电池股份有限公司 | A kind of electrodepositing zinc method in alkaline bath |
| CN107447250B (en) * | 2017-08-18 | 2019-08-02 | 中国航发贵州黎阳航空动力有限公司 | A kind of Simple clamp that conduit is zinc-plated |
| CN107447250A (en) * | 2017-08-18 | 2017-12-08 | 中国航发贵州黎阳航空动力有限公司 | A kind of zinc-plated Simple clamp of conduit |
| CN108823624A (en) * | 2018-06-29 | 2018-11-16 | 苏州市金翔钛设备有限公司 | Tubular workpiece plating rack |
| CN108823624B (en) * | 2018-06-29 | 2020-03-31 | 苏州市金翔钛设备有限公司 | Electroplating frame for tubular workpiece |
| CN109594120A (en) * | 2018-11-16 | 2019-04-09 | 首都航天机械有限公司 | A kind of cylindrical shape stainless steel thin-wall bellows electropolishing method |
| CN109402687A (en) * | 2018-11-27 | 2019-03-01 | 中国航发贵州黎阳航空动力有限公司 | Ball cup surfaces externally and internally chrome-plating device |
| CN110438537A (en) * | 2019-08-09 | 2019-11-12 | 常州大学 | A kind of novel high flux heat exchanger tube and preparation method thereof |
| CN110438537B (en) * | 2019-08-09 | 2021-10-01 | 常州大学 | High-flux heat exchange tube and preparation method and application thereof |
| CN110983418A (en) * | 2019-12-02 | 2020-04-10 | 北京北方车辆集团有限公司 | Electrogalvanizing hanging method for large-diameter gasket |
| CN112853450A (en) * | 2020-12-29 | 2021-05-28 | 石家庄飞机工业有限责任公司 | Method for manufacturing series-connected auxiliary anode for electroplating of inner hole part |
| CN115976613A (en) * | 2023-03-17 | 2023-04-18 | 江苏润硕管业有限公司 | Pipe fitting electroplating device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1173078C (en) | 2004-10-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1173078C (en) | Process and special apparatus for electrogalvenizing inner and outer walls of steel pipe | |
| CN101821432B (en) | Anodizing treatment method of metal and system thereof | |
| CN103943281B (en) | A kind of preparation method of the electric wire with copper-graphite alkene complex phase conductor wire core | |
| CN102888625B (en) | Non-ferrous metal electrodeposition palisading type positive plate | |
| US20060037866A1 (en) | Anodic oxide film and anodizing method | |
| CN2787685Y (en) | Reticular anode arrangement of electroplating tank | |
| CN1236109C (en) | Electrochemical method for forming inorganic covering layer on surface of copper material | |
| CN108193239B (en) | Copper-plated steel wire and production method thereof | |
| CN105483795A (en) | Method for preparing composite copper nanowire with underpotential deposition technology | |
| CN111636080A (en) | Alkaline graphene zinc-iron alloy electroplating solution and electroplating process thereof | |
| CN202509151U (en) | Electromagnetic type electroplating fixture | |
| CN1746337A (en) | Basic zincic acid salt plating liquor, its electroplating method and long steel-pipe with electroplated zinc nickel alloy | |
| CN2732766Y (en) | Durionising device capable of saving electric energy and equipment accessory | |
| US20180079175A1 (en) | Coated steel parts and production methods thereof | |
| CN102324276B (en) | Production process of copper coated aluminum-magnesium bimetallic conductor | |
| JP2009114475A (en) | Electrode for producing electrolytic copper powder and anode for producing electrolytic copper powder | |
| CN201116312Y (en) | Pre-plated copper electrode protecting device | |
| JPH1112791A (en) | Device for plating inner face of metallic pipe | |
| CN210048863U (en) | Zipper puller electroplating device | |
| CN108728872B (en) | Aluminum bar Pb-Sn-Sb/α -PbO for copper electrodeposition2-Co3O4Composite electrode material and preparation method thereof | |
| WO2021173469A1 (en) | Electrode having protective and locking layers on current collector | |
| CN210194021U (en) | Permanent electroplating fine device | |
| CN2861187Y (en) | Electroplating roller conducting structure | |
| CN2937160Y (en) | Electrode bar | |
| CN219342368U (en) | Alkaline zinc-plating immersed anode |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |